[Boutique] cognitive practice report essay

Part 1: Cognitive Internship Report Model

One: understanding the purpose of the internship

Through this internship, I have a good understanding of the future of the "Chemical Principles" course, which is conducive to a better combination and understanding of theory and practice. Understanding internship is an important practical teaching link in our professional teaching plan. It is a “bridge” between the school and the factory, from theory to practice. Through the internship of production process and equipment, students can understand the actual situation of chemical production and increase their perceptual knowledge, thus strengthening the engineering viewpoint and laying the foundation for the study of "Chemical Principles" and "Chemical Reaction Engineering".

Second: understanding the arrangement of the internship

On the morning of November 13th, the teacher explained the type, use and structure of the heat exchanger. The teacher explained the equipment, use, process and so on of the water station. In the afternoon, visit the laboratory and visit the distillation tower. Visit the reactor.

On November 14th, at 13 o'clock in the afternoon, we organized a visit to the Zhongshui Station. The teacher explained the principles, processes, and uses of the water station.

For some reason, this internship did not go to the factory as usual, but through the teacher's explanation, through the visit of the Zhongshui Station, to understand some practical problems. Have a deeper and more visual understanding of some of the knowledge learned in the principles of chemical engineering.

Third: understand the content of the internship

Heat exchanger

Heat exchangers are one of the most widely used equipment in the factory. Heat exchangers are classified according to their structural forms: tubular heat exchangers, plate heat exchangers and heat pipe heat exchangers.

Tubular heat exchangers are divided into: shell-and-tube heat exchangers, coiled-tube heat exchangers, casing-type heat exchangers and slab-tube heat exchangers. The most widely used one is the shell-and-tube heat exchanger, also known as the tube heat exchanger, which is a general-purpose standard heat exchange equipment. It has the advantages of simple structure, sturdy and durable, low cost, wide application, convenient cleaning and strong adaptability; it plays a dominant position in heat exchange equipment. According to the structural characteristics, the shell-and-tube heat exchanger is divided into: 1 fixed tube plate heat exchanger 2 floating head heat exchanger 3u tube heat exchanger 4 packing function heat exchanger 5 kettle heat exchanger.

The coiled tube heat exchanger is the heat exchanger with the simplest structure and the most convenient operation in the tube heat exchanger. Generally, according to different heat exchange methods, the coiled-tube heat exchanger is divided into two types: immersed type and spray type: 1 The advantage of the immersed coil heat exchanger is that the structure is simple, the price is low, the corrosion resistance is easy, and the high pressure can be withstood. The disadvantage is that since the volume of the volume is larger than that of the coil, the volume of the fluid outside the tube is small, so it is often necessary to add a stirring device to improve the heat transfer efficiency.

2 spray-type coil heat exchangers are mostly used to cool the hot fluid inside the pipe. The coils fixed to the bracket are arranged on the same vertical plane, and the hot fluid enters from the lower tube and flows out from the upper tube. The cooling water is evenly sprayed on the upper coil by the sprinkler above the tube, and dripped down the outer surface of the tube to the surface of the lower coil, and finally collected in the bottom of the tube. The device is usually placed in an outdoor air circulation, and the cooling water takes away part of the heat when it is vaporized in the air to improve the cooling efficiency. Compared with the immersed coil heat exchanger, the spray coil heat exchanger has the advantages of convenient inspection and cleaning, good heat transfer effect and the like. The disadvantage is that it is bulky and covers an area; the cooling water consumption is large, and the spray should not be uniform. Due to its simple structure and convenient operation, coil heat exchangers are often used in refrigeration units and small refrigeration units.

The casing type heat exchanger is composed of two straight pipes of different diameters to form a concentric casing, and the inner pipe is sequentially connected by a u-shaped elbow pipe, and the outer pipe and the outer pipe are connected to each other. Each length of casing is called a one-way process, and the number of courses is increased or decreased according to the heat transfer area requirements. In the heat exchange, one fluid goes to the inner tube, and the other fluid has a circumferential annulus, and the wall surface of the inner tube is a heat transfer surface. The advantages of the casing heat exchanger are that the structure is simple; it can withstand high pressure; the heat transfer area can be increased or decreased according to the need; the proper selection of the inner and outer diameters of the tube can increase the flow velocity of the fluid, and the two fluids flow in a countercurrent flow, which is advantageous. For heat transfer. The disadvantage is that the metal consumption per unit heat transfer area is large; there are many pipe joints, and it is inconvenient to clean and repair. This type of heat exchanger is suitable for heat exchange between high temperature, high pressure and small flow fluids.

Plate heat exchangers are also divided into flat heat exchangers, spiral heat exchangers, plate-type heat exchangers, hot plate heat exchangers and plate-and-shell heat exchangers:

A flat heat exchanger is referred to as a plate heat exchanger, which is composed of a set of rectangular thin metal plates arranged in parallel and clamped and assembled on the support.

The 2 spiral heat exchanger is made up of two flat plates with a certain interval, and a cover plate is welded on both sides of the spiral plate. The cold and hot fluids pass through the two channels and exchange heat through the thin plates.

2. Distillation tower

The main equipment of the rectification column rectification unit, the separation process of the mixed liquid is mainly carried out in the rectification column. In the rectification tower is installed a number of trays or a certain height of filler.

Distillation towers In petroleum refining, petrochemical and other chemical production, rectification is a very extensive mass transfer process. The process is mostly monitored by dcs. The purpose is to separate the components of the mixture to a desired purity. The rectification unit is generally composed of a rectification column, a reboiler, and a condenser. The rectification process essentially utilizes the difference in the volatility of the components in the mixture to transfer the light components in the liquid phase and the heavy components in the vapor phase to each other, thereby achieving the purpose of separation.

The working principle of the 3 version of the rectification column: the plate tower is a step-by-step contact gas-liquid mass transfer device, which is mainly composed of a cylindrical shell, a tray, a weir, a downcomer and a liquid receiving tray. During operation, the liquid in the tower relies on gravity to flow from the downcomer of the upper tray to the liquid receiving tray of the lower tray, and then flows laterally through the tray, from the downcomer on the other side to the lower tray. The function of the weir is to maintain a certain thickness of the liquid layer on the tray. The gas is pushed through the gas passages of the various trays from bottom to top under the pressure difference, and is dispersed into a small stream of gas, which is bubbled through the liquid layer of each tray. On the tray, the gas-liquid two phases are in close contact for heat and mass exchange. In the plate column, the gas-liquid two phases are brought into contact step by step, and the composition of the two phases changes stepwise along the height of the column. Under normal operation, the liquid phase is a continuous phase, and the gas phase is a dispersed phase.

The characteristics of the typographic tower are step-by-step contact, the concentration of the mixture changes stepwise, and the packed tower is different. The gas and liquid phases are differentially contacted, and the composition of gas and liquid changes continuously. The plate tower structure is shown in the figure. The tower body is a circular cylinder, and the tower body is provided with a multi-layer tray. The tray is provided with gas and liquid phase channels, such as sieve holes and downcomers, bottom gaps, overflow weirs, and the like. The gas and liquid phase processes; the reboiler heating the kettle liquid produces a gas phase which rises step by step in the column, rises to the top of the column and is condensed by the top condenser, and part of the condensate returns to the top of the column as a reflux liquid. The liquid undergoes contact mass transfer with the ascending gas phase during a stepwise decrease. The specific contact process is shown in the figure. The liquid flows laterally through the tray, overflows into the downcomer through the overflow weir, and the liquid releases the entrained gas in the downcomer, flowing from the bottom of the downcomer to the lower tray. The gas under the tray passes through the gas channel on the tray, such as the mesh hole, the float valve, etc., and the liquid layer entering the tray blisters, and the gas and liquid contacts are mass-transferred. The gas phase leaves the liquid layer and runs up to a tray to carry out multi-stage contact mass transfer.

3. Synthetic ammonia

Now ammonia is based on carbon ammonia, 1. Process route:

The common process of producing synthetic ammonia from anthracite coal is:

Gasification->semi-water gas desulfurization->compressor 1,2 section->transformation->transformer gas desulfurization->compressor 3 section->desulfurization->compressor 4,5 section->copper wash->compression Machine 6->Ammonia Synthesis->Product nh3

When the methanation method is used to desulfurize the co.co2 in the raw material gas, the process flow of the synthetic ammonia is as follows:

Gasification->half-water gas desulfurization->compressor 1,2 section->transformation->shift gas desulfurization->compressor 3 section->decarburization->fine desulfurization->methanation->compressor 4, 5,6-->Ammonia synthesis->Product nh3

4. Zhongshui Station

The Beijing University of Chemical Technology's Zhongshui Station uses advanced moving bed biofilm reactors, potassium-based free radical reactive oxygen disinfection; process simulation dcs control; Internet communication and modern management functions. Each year, it provides more than 100,000 tons of medium water for the East Campus, which is used for campus greening and flushing. The annual water saving fee is more than 400,000 yuan, achieving economic and social benefits, and striving to establish a domestic first-class water conservation demonstration station. .

Under the leadership of the staff teacher, we visited the grid room of the pump house, the waterfall gas pool, the middle pool and other places. We really saw the process of sewage being processed step by step and finally becoming a clean "middle water". The intuitive experience and experience make our understanding of sewage treatment more direct and comprehensive, reaching a new level. In the design of the device, a thin metal plate is formed, and two thin metal plates form two concentrics in order to "overcome Malaysia." Pulling the problem of the trolley, try to use energy-saving power equipment, and the water supply part adopts the double-pump parallel combination and the frequency conversion control technology according to the change of water demand.

The system utilizes data acquisition and automatic control of communication with the Internet to ensure stable operation of the water equipment. At the same time, it is not necessary to add chemicals such as flocculants, which has the characteristics of low operating cost.

Major equipment:

Moving bed biofilm reactor

The moving bed biofilm reactor is a fluidized bed similar to that in a chemical reactor. According to the surface renewal theory, the process has a microscopic water treatment technology with extremely high processing efficiency, and has a large specific surface area of ​​the biological medium, and the service life is not replaced for 20 years. . Carrier surface microbial food chain length.

The biological medium has a large specific surface area and does not change its service life for 20 years. The carrier surface of the carrier has no clogging of the food chain and does not require backwashing. Less power consumption and lower operating costs.

Potassium-based free radical active oxygen disinfection device

Potassium-based free radical active oxygen disinfection device, the prepared active oxygen disinfectant is directly used for disinfection of water, the total number of bacteria is reduced from 5000-6000/ml to 50-80/ml, and E. coli is not detected. The disinfected treated medium water can also effectively reduce ammonia nitrogen, and the anion indicates the content of the active agent and the like. The quality of the water is good. In addition to flushing, because it contains potassium, it can be used directly as a foliar fertilizer for irrigation of campus green space, which is conducive to the growth of plants such as turf and flowers, and fundamentally eliminates the pollution of water by chlorine-containing chemicals. It avoids the damage of chloride ions in the water to turf, flowers and trees. The innovation is to realize the cleaning process of reclaimed water.

It is disinfected by potassium-based free radical active oxygen disinfectant. The disinfected middle water contains trace amounts of potassium, which can be used as foliar fertilizer to achieve a clean production process for water treatment. The test in the middle water project shows that when the free radical oxygen disinfectant is added at 100 mg/l, the most economical amount is required to meet the water quality requirements.

Good removal effect on cod, nh3-n, total nitrogen, total phosphorus, tds and anionic surfactants decreased by 50%, 35%, 49%, 39%, 24% and 11%, respectively. The project effluent passed the three sampling tests of the XX City Water Conservation Management Center and reached the “Urban Miscellaneous Water Quality Standards”.

The test of acclimation conditions of activated sludge showed that the reactor was well acclimated within 10 days. When the residence time was 2~4h after continuous operation, the removal rate of cod reached 78~87%, and the removal rate of nh3-n reached 80%~93%, tss The removal rate is 93% to 95%. Good impact resistance. Under the impact load of 2000mg/l, the removal rate of cod and nh3-n in the reactor reached 70% and 90% respectively when the residence time was 7 hours. Impact. There is no need to add flocculant during the treatment.

4. Understanding the meaning of internship

In the internship, I deeply realized that it is not easy to combine theory with practice. The application of theoretical knowledge in practical production has learned about the concepts of equipment and giants that cannot be visually observed in the classroom and in books. Each step of the design must take into account the constraints of various aspects and factors, the attitude towards our future study and life must be rigorous, do not understand, ask, humbly learn from the internship teacher, and strive to improve their knowledge. And structure level.

V. How do you feel about this internship?

Understanding internships is a compulsory course at the University's Department of University. In the process of understanding the internship, we have to learn more than just the principles and production processes and production lines. This internship made me realize what I should do at work and understand the structure of some of the equipment. This internship has benefited me a lot. Spiral channel with a fixed distance between the two plates to maintain the channel spacing

Part 2: Cognitive Internship Report Model

I. Introduction

As the saying goes: The end of the paper is shallow, and you need to know how to do it. Although we have been studying basic theoretical knowledge about marketing professionals for more than two years, we still don't know much about how a company conducts marketing and how to produce. Through the school, we organized three trips to Maoming Railway Transportation Company, Maoming Petrochemical Material Supply Center, Zhonghe Plastics Group Co., Ltd. to conduct on-the-spot investigations, visits, listen to the lectures of business staff, and discuss and discuss. I not only opened up my horizons, but also I also got to know the role of marketing expertise in practical work.

Second, internship time and process

The time of this internship is: January 4, 2019 to January 6, 2019.

The process of this internship is like this: On January 4, 2019, the school organized us to visit and study at Maoming Railway Transportation Company. On January 5, 2019, the school organized us to go to the Maoming Petrochemical Material Supply Center for a site visit and listen to the company's director Li. On January 6, 2019, the school organized our visit to Zhonghe Plastics Group Co., Ltd. for a visit and discussion.

Third, the internship content

Through this internship, I learned about the transportation system and operation and daily work and management of the railway transportation company; learned how the raw materials of Maoming Petrochemical are supplied, how to purchase, how to store and manage it, and how to produce the raw materials of the company. The chemical plant, the production of raw materials and the finished product - the production line of plastic woven bags. Through this field trainee, I also learned how various marketing methods are applied to the production and operation of enterprises and the marketing management characteristics of each enterprise.

Fourth, the internship experience

Although this internship was only a short three days, I have already gained a lot. The following points are my experience of this internship.

Deep understanding of Mao Petrochemical

Although it has been more than three years since I came to Maoming, it is really rare to know about Mao Petrochemical. Usually, I just listened to others saying that Mao Petrochemical is very powerful. With Mao Petrochemical, Maoming was born, and he did not take the initiative to understand Mao Petrochemical. However, after listening to the detailed explanation of Director Li of Maoming Petrochemical Material Supply Center, I finally had a comprehensive and profound understanding of Maoming and Mao Petrochemical. After listening to Director Li's class, I not only had a deep understanding of the history of Mao Petrochemical's origin, but also had a certain understanding of the products, products and products used by Mao Petrochemical. After listening to Director Li’s class, I have a deep understanding of the importance of oil in a country. This trainee gave me an opportunity to deeply understand Mao Petrochemical. I also fully utilized this opportunity to study the history and production process of Mao Petrochemical.

Deeply understand the role and management of mechanization in production

I usually live in the ivory tower of the school. I rarely have the opportunity to go out to train. Even if I go out to work part-time during the summer vacation, I also do some manual work in a labor-intensive factory. Before I went to the trainee, I really had no idea what the term mechanization of production was. Although through the study of teaching materials, we know that the current society is already very developed, and many productions have entered mechanized production, and the coolies have gradually withdrawn from the production chain. However, without personal attention, personal experience, I can not deeply understand the role of mechanization in production. When I came to the Maoming Railway Transportation Company, I saw that the trains coming and going were transporting a variety of products. However, I did not see many workers on the scene. As soon as I walked into their information building and saw several staff members carrying out various operations in front of a large electronic screen, I realized that their operations were operated by system command and had entered semi-automation. So, there is no need for many workers to conduct on-site command. The staff at the scene did not go to direct the work, but through the system to understand that the following machinery has failed, and maintenance. Then came to Zhonghe Plastics Group Co., Ltd., a factory that makes woven bags, with an annual output of 30 million tons. I thought that there would be many workers working in the workshop. However, as soon as I came to the workshop, I knew that my original idea was wrong. If the big workshop, the rows of machinery are discharged in an orderly manner, working at high speed, only one or two workers are working. Looking at these high-speed machines, I finally realized how the capacity of 30 million tons came. The current production is already mechanized production, and it is no longer the traditional labor. Mechanized production has liberated labor productivity, greatly improved output, reduced production costs, ensured the quality of products, and provided a good guarantee for the competition of enterprises.

Familiar with your products and competitors

In the process of the trainee, after listening to the directors of the three companies, after the director's class, I found that they all have one thing in common: they are very familiar with the products of their own company, especially the characteristics, uses, superiority and deficiencies of the products. Not only that, they also know their competitors very well, such as the product characteristics of competitors, the output of competitors, and the marketing strategies adopted by competitors. The experience of the directors and directors is a good example of what the teacher has taught. When learning to sell basic theoretical knowledge, the teacher taught us that when we sell our products, we must be very familiar with the characteristics of the products in order to sell the products well; when selling products, we should promote the superiority of the products to attract Customer's eyeball; when formulating marketing strategies, we must also pay attention to the marketing strategy of competitors... I think theory and practice are like this. This is what we often say: know ourselves and know each other.

Quality assurance is implemented in actual production

When learning theoretical knowledge, we all know that we often emphasize that products must be guaranteed to be sold in order to improve consumer satisfaction. However, we do not understand how to ensure quality in the production process. During this internship, I learned that Zhonghe Chemical Plastics Group Co., Ltd. did this. First of all, the introduction of advanced production equipment to ensure quality. The production equipment of Zhonghe Plastics Group Co., Ltd. is very advanced, which guarantees the quality of their products. Secondly, establish quality policy and put a brand on the wall of the workshop. The content of the brand is like this: the company's quality policy: quality-oriented, market-oriented, continuous improvement, user satisfaction; company quality policy: target product pass rate >=98%, customer satisfaction rate>=95%, employee training rate 100%, customer complaints and complaint handling rate 100%. In doing so, every employee will always remember the company's requirements for product quality and deepen the product quality requirements into the employees' words and deeds. Finally, a special person is assigned to test the quality of the product. When visiting the workshop, we found that they would send one or two employees to test the quality of the products, and regularly check the quality of the products to ensure the quality and pass rate of the products.

Develop a scientific marketing strategy based on actual conditions

In the nearly three years of study, we have learned a lot of theoretical knowledge about marketing professionals. There are also many marketing strategies in the book, such as product marketing strategy, price marketing strategy, distribution channel marketing strategy, and promotion marketing strategy. However, in the actual marketing work, it is not always necessary to use the marketing strategy mentioned in the book. I have this feeling, which is derived from the personal experience of the manager of the sales department of Zhonghe Plastics Group Co., Ltd. When the company first started selling k-gel, due to improper use of marketing strategies, sales were not smooth, and backlog of inventory products. When Nie took over, he did not adopt all the marketing strategies mentioned in our book, but re-selected dealers and strengthened the management of dealers according to the actual situation of the market, so that the products sold well. When Nie Manager sold n-methyl diacetate pus, he also adopted a marketing strategy in conjunction with competitors based on the actual situation of the market competitors, which led to a two-fold increase in sales of the product instead of completely copying the book. Use the 4p strategy or something else. From the personal experience of Manager Nie, I deeply understand that the theoretical knowledge of marketing strategy is quite different from the actual marketing work. When applying theoretical knowledge, we must make appropriate modifications based on actual conditions, rather than copying them all. Only in accordance with the actual situation of the market can we develop a scientific marketing strategy in order to achieve the marketing goals of the enterprise.

Product pricing in actual marketing work

When we studied corporate pricing, the teacher told us that the pricing of enterprise products was affected by the 3c factor. However, in the process of actual product pricing, the factors affecting product pricing are more than 3c. Through this trainee, I learned that the pricing of a product is affected by many aspects. Such as product cost, high cost, high pricing, this is undoubted; product supply and demand relationship, oversupply, low pricing, short supply, high pricing, we also know this; sales strategy, if it is a new product, enter new markets In order to attract customers, low prices are generally used instead of the rouge pricing method we have learned. The size of sales is usually used to encourage dealers to purchase more goods. Enterprises usually use a pricing strategy with a large price. The settlement method will also affect the pricing of the product. Usually, the company adopts the cash settlement to be relatively favorable. If it is the credit sales, it must set a relatively high price strategy; the transportation mode of the product will also affect the pricing of the product, if the dealer is self-transported If the company is to help with transportation, not only will the price of the product be higher, but the company will also charge a certain transportation fee... The pricing procedure in the actual marketing process is also far away. It's more complicated than the pricing program we've learned.

Marketing staff's requirements

Through this field visit and listening to the internship of the report, I realized that to be a good marketing person must also have the following qualities. First of all, we must have four kinds of profound consciousness: market awareness, efficiency awareness, service awareness, and innovation consciousness. Only with the above four kinds of consciousness can we gain insight into the market, improve efficiency, improve service, and innovate. Secondly, we must have three concepts: establish the concept of the market first, establish the concept of traveling with the city, and establish the concept of service-oriented. Only by establishing the right ideas can we control the correct behavior and make things right. There is no so-called product in the market, so we must establish the concept of the market first. Only by knowing how to adapt at any time and changing the marketing strategy according to the actual situation of the market can we always have a place in a highly competitive market. Nowadays, competition is no longer a competition for products. In many cases, it has become a competition for services. With the concept of service, customers will be placed first, and only customer-centric, can improve customer satisfaction.

V. Summary of the internship experience

The above points are my feelings in this trainee. This trainee brought me a lot of understanding and inspiration. This short and substantial cognitive internship, I think it has played a role in understanding the actual marketing work, the role of the transition. I will study harder, pay attention to the combination of market marketing theory knowledge and actual marketing work, and lay the foundation for my experience in implementing sales work in the future.

Part 3: Cognitive Internship Report Model

In the ninth week of the second semester, students from our School of Architecture and Engineering conducted a one-week cognitive internship under the leadership of Dean Chen Jinling, Peng Liying and Liang Qiao. The public said well. The construction industry is quite focused on practical experience. As a student of a civil engineering major in the University of Applied Sciences, experience is even more important to us. This time we finally had the opportunity to visit many construction sites. In the past two days, the weather was hot in the first two days, and the weather was not good in the last two days. The weather has been bad. We went to Changsha and Xiangtan to visit. The time is tight and the road is far away. It is quite tired. But for a week, I have always been excited and listened to the teacher and the construction staff, the supervisors on the ground, which made me gain a lot. This not only further strengthened my understanding of the profession, but also gave me a preliminary understanding of the choice of future work.

The following is the specific itinerary of my internship and my experience.

Monday, April 13th, XX

In the morning, in the second lecture hall of the library, we listened carefully to the experts of President Chen and Xiangtan City Architectural Design Institute. Dean Chen summed up the itinerary of our internship, and then the experts of the design institute introduced us carefully the work requirements in the design institute, which is to tell us how to achieve the standard level and then organically counted into the design institute. This is both a spur to us and encouragement.

In the afternoon, the temperature was warm, and we were excited to visit the new campus of our school under the leadership of President Chen. I have been here for more than half a year, but I have never been so close to appreciate the beauty of our lake workers. In this garden-like school, the students are free to speak and feel very good. I can see that President Chen is also very excited. He proudly introduced us to every building of Lakers, every landscape...

Tuesday, April 14th, XX

Star City Changsha Tour

On the 14th of April, the weather was unusually hot. The sun is like a hot fireball, and the barbecue on the ground is hot and hot. But this did not affect the good mood of the students. Because today we are going to Changsha internship to experience the beauty of Star City.

The magnificent Helong Stadium

The first stop we visited was the Helong Gymnasium. The Helong Gymnasium is definitely a world-class gymnasium. Many structures have reached world-class standards at that time. With the introduction of the general structural designer Hu Gong, we have a better understanding of the Helong Gymnasium. Changsha Helong Stadium, which is responsible for the opening ceremony of the 5th City Games, is located in the northwest of Changsha New Century Sports Culture Center. The main project is 8 floors, with a building area of ​​117,580 square meters. The outer wall of 5 or more floors is a circular shear wall. The roof elevation is 28.8 meters and the highest is 33 meters. It is distributed in a staircase and the entire structure consists of 484 structures. The main part of the entire panel is decorated with the most popular glass curtain wall in the world today. Helong Stadium can accommodate 60,000 people, and the steel roof project has a construction area of ​​45,700 square meters and a steel capacity of 3,552 tons. Helong Stadium has four gates from east to west and north and south. The upper ends of the four gates adopt a cable-spotted glass curtain wall, and the four gates adopt a large-panel glass curtain wall. The entrance and exit of the VIP channel adopts a structured glass curtain wall structure, which is supported by a steel skeleton and a composite aluminum plate to ensure that the performance meets the design requirements. The “Flower of the Century” design of Helong Stadium blends traditional culture with modern art. The roof of the home symbolizes a blooming hibiscus flower, and the flowers mean applause and honor. The north and south facades of the home show " The shape of the white crane wings is a symbol of the sports industry in Changsha, Hunan, like a white crane.

The stadium is novel in style. It is majestic. Romantic and symbolic: the top cover is composed of 12 petal-like galvanized sheets from north to south. The west layer is layered like a white cloud, reflecting the design understanding and grasp of the artistic conception of “blue sky and white clouds”. . Things look like the curtain that is slowly opening, giving people a splendid scene of singing and dancing. The roof of the dance is like a wave, and the crowds like the cheering people pick up the waves, which fits the theme of solidarity and makes the Xiaoxiang people associate with the mother river Xiangjiang. Each segment predicts the ribbed steel frame connection, and intentionally highlights the spatial layer feel and form guidance of the underarm, pays attention to the slight gradual transition of the plate transition, and further explores the space that the roof of the ancient building conveys in the modern roof. The beauty of curves and silhouette silhouettes to awaken people's pursuit of ancient Chinese and architectural intentions.

Orange Island Tour

The second stop we came to the head of Orange Island. Orange Island is really beautiful! The tour guide enthusiastically told us: "The Orange Island Ecology District is the main part of the future Orange Island Scenic Area. It uses Mao Zedong's "Yuanyuanchun·Changsha" poetry as the main line, and builds a hundred acres of orangery in different regions. Meiyuan Bamboo Forest, Country Garden, Yangliu Bank, Rose Garden and other scenic spots show the blending of natural scenery and humanistic poetry. The relevant person in charge of the Orange Island Engineering Construction Command revealed that in addition to planting orange trees, Orange Island will also plant a large number of The precious tree species make the spring blooms bloom, the summer is green, and the autumn and winter are red and green. Of course, the scenery is secondary. Our main purpose is to look at Mao Zedong's youth art sculpture. According to Zheng Wei, director of the Orange County Engineering Construction Headquarters Office, according to the overall plan, the orange manuscript is based on the poems of Mao Zedong's "Yuanyuanchun·Changsha". The main line leads the whole continent. The statue of Mao Zedong standing on the head of the island is based on the image of Mao Zedong in the youth of 1925, highlighting the spirit of Mao Zedong's ambition and ambition. The total height of the statue is 32 meters.

Zheng Wei pointed out that the Mao Zedong Youth Art Statue was made by the most famous sculptor in the country and it is a milestone in the history of Chinese sculpture. At present, eyebrows, hair, face shape, etc. have been revised many times. "In the process of production, it will be revised continuously until all sectors of society can accept it... A historical image of a great man from classical harmony to modern lofty."

Professor Chen Feihu's lecture

At 7.00 in the evening, we ignored the fatigue of the road and rushed to the first lecture hall of the library on time to listen to Professor Chen Feihu's lecture on architecture and art. Professor Chen Feihu has many titles including the Dean of the School of Architecture of Hunan University and the Vice Chairman of the Hunan Provincial Calligraphy and Painting Association. Professor Chen talks humorously, and his words reveal his love for painting and his unremitting pursuit of truth. When talking about architecture and art, Professor Chen said with emotion: "There are only a few architectural masters in China who share the same characteristics, that is, they are both great architects and great painters; when it comes to art When cultivating the importance to the individual and the society, Professor Chen vividly listed the examples of the ancient Greek generals and the French emperor Napoleon. He told us that now the Acropolis, Paris, France can become a world historical and cultural city and these two people. The high attention to art is inseparable. Then Professor Chen boldly pointed out the modern urban art cases and put forward some methods to improve the artistic accomplishment of college students, which benefited us a lot. Finally, Professor Chen showed his students the career of architectural art. Some works in the past few decades. There is no lack of pride but full of hardships. The sadness and sorrowful feelings of his works are obvious. The students are intoxicated and moved, and the applause is higher than the waves...

April 15th, XX, sunny

Today is the third day of the internship. We went to visit the Lotus Bridge in Jintan and the Jinping Village Railway Bridge.

The world's first cable-stayed steel arch bridge - Liancheng Bridge

The Liancheng Bridge was officially started on February 28, XX. After four and a half years, the Liancheng Bridge was fully opened. It is understood that the whole bridge has a total length of 4,488 meters, including 1,345 meters of bridges, 1,325 meters and 1,818 meters of east and west leads, and 27 meters of bridge width, with a total investment of 420 million yuan. The bridge design scheme is Shuangfeiyan cable-stayed steel arch concrete bridge. It is the world's first cable-stayed steel arch bridge. Its bridge technology level is in the advanced position in the world, especially the 400-meter steel pipe single arch span is the longest in the history of world bridges. The Liancheng Bridge has two national highways 107 and 320, so that the transit vehicles do not have to go through the downtown area, shortening the journey by more than 10 kilometers, alleviating the traffic pressure in the city, and also expanding the city's urban structure and bringing the Changsha, Zhuzhou and Xiangtan three closer. The distance between the cities.

Wuguang Railway Jinping Village Bridge

The Wuhan-Guangzhou Railway was designed and presided over by the China Railway Fourth Bureau. It is reported that the speed will reach 350 kilometers per hour after completion and ranks among the world's leading standards. Today we are visiting the Jinpingcun Railway Bridge, one of the important projects. Teacher Liang Qiao told us that the Jinping Village Bridge of Wuhan-Guangzhou Passenger Dedicated Line is located in Jinping Village, Zhaoshan Township, Xiangtan City. The bridge is 340 meters long, with 84 pile foundations and 11 piers. There are 10 32-meter and 900-ton bridges. Since the commencement of the project in November XX, the builders of the China Railway Fourth Bureau have overcome the difficulties of inconvenient transportation in the hilly area, carefully organized and scientifically constructed to ensure that the main body of the bridge is completed on time.

Bidding presentation

At 7.00pm, we came to the library lecture hall again. Tonight we have to learn what is tendering and bidding. As a person in the construction industry, whether it is engaged in construction, management, or supervision, it is necessary to use this knowledge. After careful listening, I have a certain understanding of the bidding. The tenderer shall have the corresponding funds or funding sources for the bidding project to be implemented, and shall be clearly stated in the bidding file. The tender is divided into open tendering and invitation tendering. Tendering Procedure: The bidding procedures for government procurement are generally as follows: 1. The purchaser prepares the plan and submits it to the Government Procurement Office of the Finance Department for review; 2. The procurement office and the bidding agency handle the entrustment procedures and determine the bidding method; 3. Conduct market research, and After the purchaser confirms the procurement project, the bidding file is prepared. 4. Publish the tender notice or issue the invitation to bid, etc. I will not describe them here.

Heavy rain on Thursday, April 16, XX

On the last day of our internship today, we will drive Xiangtan Jiuhua Industrial Park to visit industrial buildings and civil buildings.