Summary of the year-end work of the expressway project department

I. Project Overview The starting point of Maanshan-Wuhu Expressway is k0+073.935, which is connected to the East Ring Road of Maanshan City. The end point is k53+370, which connects the Wuhu to Tongling Expressway. The total length of the route is 53.370 km.
The Ma'anshan-Wuhu Expressway is a highway in the plain micro-hill area. The designed speed is 120 km/h. The load level is: car-super 20, trailer-120. The roadbed design has a width of 28.00 meters and a road width of 23.5 meters.
The upper layer of the pavement structure layer is made of 4cm thick ak-13a anti-sliding surface layer, the middle layer is made of 6cm thick ac-20i dense grade asphalt concrete, and the lower layer is made of 6cm thick ac-25i dense grade asphalt concrete. The upper layer and the middle layer are made of sbs modified asphalt. The toll station uses reinforced concrete pavement.
This tender section was constructed by Beijing Chengjiandao Bridge Co., Ltd. The contract was signed on February 12, XX, the total contract price was 73.718 million yuan, the contract period was 18 months, and the commencement order was issued on April 9, XX.
Second, the supervision stationed in the situation, the resident office of the fixed-point supervision staff 12, four professional engineers are responsible for road, measurement, contract measurement and test supervision work, the division of labor is clear, the responsibility to the people. The resident office and office test facilities are well-equipped, all kinds of rules and regulations are complete, and the engineering charts are on the wall. All this has laid a solid foundation for the smooth development of supervision work.
III. Project Progress Overview This year's project has completed the construction of all the base and base layers of the pavement. The planned workload of 3,184.44 million yuan has been completed to 23.916 million yuan, accounting for 75% of the project, accounting for 36% of the contract price. See the table below for details.
The project name unit annual plan is completed by the end of November, and the total percentage of the plan is cement-resistant gravel base layer thickness 200mm.
M2
644232
644232
100%
Cement stabilized gravel under the base layer thickness of 180mm
M2
532295
235754
44.29%
Cement stabilized macadam base layer thickness 180mm
M2
532295
229555
43.13%
Cement stabilized gravel under the base layer thickness 150mm
M2
64286
46082
71.68%
Cement stabilized macadam base layer thickness 150mm
M2
64286
45372
70.58%
Cement stabilized macadam base layer thickness 200mm
M2
3742
2122
56.71%
IV. Engineering Quality Supervision Work Quality control is the focus of supervision during the construction phase. During the construction supervision process, our supervisors can seriously implement the regulations of the project office and the director's office, and strictly control the pre-construction guidance and control during construction. And a series of supervision work after the construction inspection.
As the construction requirements of pavement works are formed once, pre-supervising is particularly important. Before the construction, the supervision team organized the contractors to carry out the technical disclosure, emphasizing the key key processes in the construction process, strictly requiring the contractors to implement them one by one according to the requirements of the start-up report, then conducting the test section paving, collecting the information and carefully summarizing them for guidance. Subsequent scale construction.
During the construction process, the supervision team carried out the whole process and all-round supervision of the pavement project by strengthening inspection, side station, measurement and test.
Patrol. The supervisory team leader and the professional engineers will conduct daily inspections of the construction projects under construction, master the project dynamics, and make records. Oral or written instructions shall be made to the construction process, methods, procedures, and non-compliance with safety and civilized construction of the contractor, and the rectification shall be implemented within a time limit.
Next to the station. In the construction process, the following work is done through the supervision of the side station:
1. Check whether the materials, equipment and personnel at the construction site are complete;
2. Whether the aggregate gradation and construction mix ratio are consistent with the construction coordination notice;
3. Whether the construction method and operation process are consistent with the corresponding scale and test section;
4. Whether the construction is carried out according to the width, line type, thickness and compaction degree required by the drawings;
5. After each process is completed, signing is completed;
6. Supervise the quality inspection of the contractor, test sampling, and whether the various measurements and on-site records are standardized.
7. In the process of the side station, the supervision team shall promptly request the contractor to rectify the construction defects on the construction site, and find that the incorrect process and raw materials are notified in writing to the contractor to correct immediately, otherwise they may not enter the next process;
8. Collect original data that affects the quality, schedule, and cost of the project, and make a record;
9. The contractor is required to strictly follow the principles of safe production and civilized construction during the construction process.
measuring. Since entering the market in March this year, the handover of the roadbed pavement unit has been organized first. The whole process has participated in the contractor's encryption and re-testing of the conductor points and level points. Before the construction of the grassroots level, the measurement work will focus on the encryption control measurement of the roadbed elevation. For the paragraphs where the elevation deviation exceeds the design high allowable range, the qualified tester must agree to the construction and stakeout after the treatment; during the construction process, the inspection and acceptance contractor The person's midline is staked out and the contractor's construction elevation control pile is reviewed. At the same time, the contractor is required to conduct follow-up inspection after the paver, and find that the error is adjusted in time; determine the looseness factor through the construction of the test section, and urge the contractor to timely report the completed construction paragraph, and through efforts, the grassroots midline deviation And the cross slopes are in compliance with the requirements of the specification, and the pass rate of elevation is over 80%.
test. The resident office laboratory conscientiously implements the relevant supervision policies and policies, strictly controls the entry materials. Before the raw materials enter the market, the contractor must submit the quality certificate issued by the manufacturer and the contractor's inspection qualified materials. After the raw materials enter the market, the contractor will be contracted. Personnel sampling and inspection must strictly implement the test operation procedures, and must be supervised by the test supervision. At the same time, the test supervision strictly completes the sampling inspection according to the frequency specified in the bidding archives. If there is any doubt about the quality of the materials, increase the sampling frequency and the unqualified materials. Resolutely clear the appearance. Up to now, the laboratory has completed:
1. Standard test: 3% cement dosage in the base layer is 4 times, 5% cement dosage in the base layer is 3 times, and the mixture ratio is 2 times;
2. Raw material testing: 26 times of cement and 54 times of aggregate;
3. Inspection during construction: The mixture is sieved 183 times, the water content of the mixture is 242 times, the cement dosage is 698 times, the compaction degree is 708 points, and the unconfined compressive strength is 1494 sets;
4. Horizontal drainage ditch c20砼: 40 sets of test pieces.
For problems and treatments that occurred during the construction process:
1. In the case of unstable cement dosage, the contractor is required to strengthen the cement dose titration, at least once every half hour;
2. Require the contractor to adjust the water content according to the temperature;
3. The degree of compaction tracking is not detected at a point of 25 meters, and the unqualified point is recompressed in time;
4. The paragraphs with unconfined compressive strength unqualified shall be sampled and verified in time.
V. Measurement payment and contract management, measurement payment and contract management are important components of supervision work. In order to do a good job in measurement, the resident office has established a measurement payment account and changed the account in time to ensure the accuracy of the information and to make the site Off, unqualified projects are determined not to be measured. In the current year, our resident office successfully completed the five-phase measurement work, and the accumulated payment amount was 14,433,672 yuan. In handling all kinds of changes, we adhered to the principle of prudence, meticulousness and rigor, and took the responsibility of the owners and contractors to deal with various changes in a timely manner. In the current year, there were two changes in total, and the cumulative increase was 6,255 yuan.
Construction contract is the basis of engineering construction. Supervision of contract performance is an important part of supervision work. At the beginning of the approach, the supervision team conducted a series of reviews on the contractual performance of the construction unit:
1. Examine whether the main management and technical personnel of the contractor enter the market in accordance with the bidding documents and the promises at the time of bidding;
2. Examine whether the contractor's construction machinery and equipment meets the contract requirements;
3. Examine whether the contractor’s resident, construction land area and hardened drainage conditions are up to standard;
For the problems existing in the review process, submit a review opinion and report it to the director's office and the project office.
VI. Documentation and Management Work Archives and materials are concrete manifestations of project construction quality, construction progress and investment control. In order to facilitate the review of archives and project completion data, our group conducts standardized management according to the requirements of the bidding archives. In the process of supervision, not only do the on-site supervision work, but also fill in or record the supervision and sampling status of each process in the corresponding form, account or supervision log, and timely organize and archive the internal business data. The physical engineering and internal materials are consistent.
VII. Safety Production and Civilized Construction Residents' Offices While grasping the construction quality and progress, the safety and civilized production is also constantly unremitting, strengthening the inspection of on-site civilized construction and safety production, conducting monthly safety inspections regularly, and going to the project office at the end of the month. The quality supervision station reports the inspection results and the rectification situation to eliminate potential safety hazards in a timely manner. For the contractor, the construction of the access road is smooth, the material stacking specifications, the signage slogan is complete, and strive to create a safe and civilized construction environment.
Eight, the construction of a clean government in clean government involves all aspects, involving every supervisor, and there is no size. Therefore, in daily work, we always adhere to the iron fist to catch clean government, pay attention to the reflection of clean government in a timely manner, and adopt the policy of “active propaganda, control, supervision, and prevention”. ** The project department and all the supervisors have signed a letter of responsibility for clean government work, effectively preventing any corruption from growing. So far, there have been no problems reflecting the integrity of the government.
IX. Remaining Projects of Subgrade The main project of subgrade was basically completed this year. The Resident Office urged the road-based contractors to make proper handovers with the road contractors, which provided strong support for the smooth development of the pavement project. The remaining 3b Dangtu Interchange was part of the project. And some of the subgrade protection works will be completed within the year. At present, we are making every effort to carry out the construction of roadbed completion data.
X. Engineering Evaluation and XX-Year Work Arrangement For each sub-project completed, the supervision team will timely measure, coring and panel quality acceptance, and summarize the inspection data during the construction process to assess it. The completed paragraphs are all excellent works.
In XX, the Resident Office will continue to intensify the supervision work, and complete all remaining projects in good faith.
XX year work plan project name unit plan completed quantity amount through layer
M2
734060
22.0218
Adhesive layer
M2
1173719
19.9532
Sealing layer
M2
743701
81.0634
Fine grain modified asphalt concrete thickness 40mm
M2
895982.5
706.0342
Medium grain modified asphalt concrete thickness 60mm
M2
891183.3
1110.4144
Coarse grain asphalt concrete thickness 60mm
M2
499400
559.3280
Cement concrete panel thickness 260mm
M2
30,753.46
329.8309
Soil road shoulder
M3
13662.50
20.2404
Central divider with backfill
M3
27,268.38
32.3130
Concrete precast block reinforced soil shoulder
M2
39568
137.3801
Concrete precast block curb
M3
1820.23
84.3422
Φ80mm soft water pipe
m
21909.8
44.3454
Longitudinal rain hose
m
3026.7
31.7017
25-level concrete collecting well seat
52
4.2194
Central divider with groove 150mm × 150mm × 600mm
m
21909.8
42.5707
Impervious geotextile waterproof layer
M2
81368.23
52.8080
Graded gravel shoulder drain drainage ditch
m
32184.5
45.1549
total
3521.7766
Looking back on the past and looking forward to the future, all the supervisors of the ** Road Project Department will continue to work hard to further improve the quality of the project, strictly control the materials, carefully examine each process, strictly check and accept each project, and increase the intensity of data inspection. Improve engineering and technical materials and lay a solid foundation for project completion and acceptance. We have the confidence and ability to do a good job in project quality, control the progress of the project, and do a good job in investment control. We will do our utmost to create a boutique project and contribute to the road construction industry.