I. Overview of the Project
Wanzhou Line Wancheng-Xinfangwa Highway starts at Wancheng Village, Jinmiaopu Town, Zezhou County, and ends at the intersection of Xinfangwa Village and 207 national highway in Lichuan Town, Zezhou County. Along the way, it passes through Fengmen, Kounan Bay, Dakou, Huabu City, Jiaquan, Shanjie, Aihezhang, Huxianling, Caozipu, Lanche, Shuikui, Jinmiaopu, Cao Shi, Tianjingguan and Tianshui Ling.
The whole line adopts the technical standard of Grade III highway, with the design speed of 30 km/h and the subgrade width of separated section of 7.5 meters. The remaining technical indicators shall meet the specified values in Technical Standard for Highway Engineering (JTGB0 1-2007) issued by the Ministry.
The commencement date of this contract section is April 30, 2007 and the completion date is September 30, 2007.
Main project contents:
(1) subgrade engineering
1，9343㎡； Excavation of old pavement;
2. Slurry rubble drainage project with a capacity of 3342.27m3；;
3. Protection Works 140.67m3
(2) Pavement engineering
1. 20cm thick cement stabilized macadam subbase is 98770m2；;
2. The cement stabilized macadam subbase with a thickness of15cm is 75075m2.
3, 20cm thick cement stabilized macadam base173845 m2; ;
4. Permeable oil: 307457m2；;
5. Adhesive coating oil:190499m2; ;
6. 6cm fine-grained asphalt concrete pavement116958m2;
7.6cm medium-grained asphalt concrete pavement 190499m2
8. 4cm modified asphalt concrete pavement190499m2; ;
9.9069m3 rubble concrete kerb.
() safety engineering
C25 concrete guardrail is 2024m3.
Second, the establishment of the organization
1, personnel entry and management organization setting
Our company set up the Bowl Line Project Management Department to be fully responsible for the implementation of the Bowl Line Reconstruction Project. Yao Haidui, the manager of the management department, is responsible for all the work of macro-control projects, and Cheng Dongfang, the deputy manager, assists the project manager in the quality, progress and safety of the projects. Zhao Jinsheng, technical director, is responsible for overall technical work and assists the project manager in solving technical problems. At the same time, there are six departments: construction team, survey team, laboratory, material and equipment logistics department, machinery team and comprehensive office, which are responsible for the construction tasks of this project.
2. Input of mechanical equipment
According to the requirements of the owner and supervision engineer on the construction period and progress, our project manager department has successively put in 1 water stabilized mixing station, 35 vehicles (Cummins 15t), 2 excavators (Komatsu 220 and 300 models), 3 loaders (50 models) and 2 vibratory rollers (YZ 18J). Two vibratory rollers (model CA30), 180 grader, 1 paver, 8500 paver and 1 asphalt mixing station.
Three. quality management
(A) measures to control the quality of the project
1. Seriously study and implement the spirit of the National Conference on the Quality of Infrastructure Construction Projects, implement the notice of the General Office of the State Council on strengthening the quality management of infrastructure construction projects, and establish the responsibility system of project quality leadership in this project, with the project manager taking the main responsibility, and the leaders and technical leaders at all levels of the construction unit taking corresponding legal and technical responsibilities for the project quality. Conscientiously implement the lifelong responsibility system for project quality, strengthen construction management, standardize market behavior, clarify responsibilities, and ensure high-quality projects.
2. Strengthen quality awareness, conscientiously implement the policy of "quality first, a long-term plan", and run the work of creating excellence through the whole process of construction and production. In the aspects of construction team selection, organization setting, construction scheme, management system, etc. Closely around the goal of excellence, to ensure and improve the quality of the project as the main line, comprehensively organize the construction and production.
3, strengthen the quality assurance system headed by the first manager at all levels, complete with strong relevant personnel, so that leaders at all levels, business departments, on-site command and operation teams have clear quality responsibilities, timely reward and punishment assessment, and fully mobilize the enthusiasm of all employees to create excellence.
4. Strengthen close cooperation with owners, supervisors and design units, actively listen to the opinions of supervision engineers, and realize the quality work pattern of "four in one" joint excellence.
5. Deploy capable management personnel and construction team, strengthen quality awareness education, education and training and technical assessment of all contractors, and adhere to the system of holding relevant certificates.
6. Improve the internal inspection system, assign quality inspection engineers from the inspection institutions at the next higher level, and implement the supervision separation system managed by the Construction Technology Department and monitored by the Quality Inspection Department, based on self-inspection and self-control, so as to ensure the realization of the goal of creating excellence. Take the "one-time inspection qualification rate" of the on-site quality inspection engineer as the assessment index to improve the seriousness and authority of engineering inspection.
7, improve the incentive mechanism and restraint means, take regular appraisal, implement the quality veto system, and use economic leverage to ensure the project quality.
8. Strengthen process quality control, organize production in strict accordance with ISO9002 quality assurance mode, and formulate operation standards, process standards and inspection standards for each working procedure and each link according to the construction technical specifications, quality inspection evaluation standards and quality requirements of bidding documents and construction contract terms. Record the implementation of process standards, so that all processes can be connected in an orderly manner.
9, the preparation of practical implementation of the construction plan, according to the requirements of the node time limit for a project, phased control, to achieve balanced production, to create conditions to ensure the quality of the project.
10, it is planned to set up a site laboratory to strictly control the inspection of finished products, semi-finished products and raw materials to ensure that the materials are qualified, the information is complete and the test data is accurate; Take effective inspection measures to control the engineering quality; Strictly control measurement, regularly inspect and evaluate all measuring equipment in use according to regulations, and put them into use after passing the inspection.
1 1. All completed works in this contract section, especially culvert works and protection works, shall be guarded and protected by special personnel before handover to ensure that the completed works are in good condition.
12, strengthen the construction technology management, adhere to the technology compound system, and adopt effective technical management means to improve the project quality. The management department shall set up a precision survey team to be responsible for the control survey network and retest in the construction stage of this contract. Engineering and technical personnel shall ensure that the construction drawings, technical disclosure and construction survey are timely, accurate and correct, and implement the technical disclosure review and signature system. All drawings disclosure and survey lofting data can only be delivered to the construction after being reviewed and signed by the technical director, and all the data are kept intact for verification.
(2) Self-inspection of construction project quality and handling of project quality problems.
First, strict management. Establish and improve various quality management systems. There is not only a quality assurance system, but also a target responsibility letter signed with various construction teams, outsourced machinery, equipment and vehicles, which is decomposed layer by layer and the responsibility lies with people. Problems, in strict accordance with the provisions of the responsibility system shall be investigated for responsibility.
The second is strict quality inspection. My project department has a special person to carry out the test and quality inspection, operate in strict accordance with the specifications, increase the frequency of test and detection, and speak with data. When laying cement stabilized macadam base, the operator shall conduct EDTA determination and water content detection for 3-5 times for each working section. Once it is found that it does not meet the test requirements, it should be adjusted immediately until it is qualified. When paving asphalt concrete pavement, it is strictly required to test the penetration, ductility and softening point of each modified asphalt, and randomly check the specifications of the incoming mineral aggregate. Measure the water content every morning and inform the control room. Do a set of Marshall test and extraction test of asphalt mixture every morning and afternoon to monitor the fluctuation of various quality indexes.
Third, strict supervision procedures. In the construction, we insist that after each working procedure is completed, we will never enter the next working procedure without the approval of the resident supervision engineer.
(3) Evaluation of finished quality
The pavement reconstruction project around the bowl line undertaken by our project department is an excellent project with straight line shape and smooth and dense asphalt concrete surface.
Fourth, the construction progress control
After the project started, we took action immediately, actively grasped the preparatory work and set up a leading group for the preparatory work. First, organize engineers and technicians to check the design drawings and engineering quantity drawings of the project on the spot, and have a good idea of the existing problems. At the same time, the local natural conditions such as hydrology, geology, climate, traffic and local resources, as well as the construction site and construction conditions were fully investigated, which provided a scientific and reasonable basis for the preparation of construction organization design and the construction progress of the project.
In 2007, after the project leading group officially issued the commencement order, the mechanical equipment, construction personnel and materials needed for the project entered the site on time, and the production started quickly, especially the asphalt mixing station. According to the characteristics of the bowl-shaped line project, our unit purchased 2000 large-scale equipment and reserved modified asphalt for later use.
Verb (abbreviation of verb) construction safety and civilized construction
Our project department always insists on "safety first, quality first". Safety is the key to the survival and development of stone production enterprises, and safety is benefit.
Safety production management embodies people-oriented. Full-time security officers shall be set up on the construction site, responsible for fire prevention, theft prevention, pollution prevention, gas poisoning prevention, fighting prevention and other safety work. In mechanical construction, special attention should be paid to cultivating the awareness of safe operation and safe production of mechanical personnel to prevent all kinds of mechanical accidents.
Our project department has established a complete safety management system, from the project manager to the basic technicians, everyone shoulders the mission of safe production, and there is no worker casualty in the whole project.
In terms of construction organization, the project department also pays special attention to civilized production, pays attention to the fact that production activities can't disturb people, and also pays attention to the coordinated relationship with local people, and puts the construction site management in a very important position.
In terms of building a clean government, our project department requires all construction personnel, especially the heads of various departments, to take the lead in honesty and self-discipline, consciously accept the supervision of party organizations and the masses, insist on starting from me, set an example, always keep in mind honesty and keep clean everywhere, set an example for the following construction personnel with practical actions, and form a positive and good fashion in construction.
VI. Environmental Protection and Land Saving Measures
My project department attaches great importance to environmental protection in the construction, not only at the expense of the surrounding environment, but also pays attention to harmony, consistency and beauty with the surrounding environment, mainly including the following points:
1, the waste residue of our project department should be piled up in the designated place and never abandoned;
2. Both sides of the highway should be kept clean and beautiful.
Seven, the application of new technology, new material and new technology in construction.
When paving asphalt concrete pavement with empty roadway, most sections of the long line around the bowl belong to sharp bends and steep slopes, and the oil surface is prone to displacement and stuffing. After adjusting the rolling direction of vibratory roller, it is effectively controlled. SBS modified asphalt concrete was used in the construction of heavy driveway in our project department, and the stability of asphalt concrete surface was controlled. At the same time, the high-temperature softening resistance and low-temperature cracking resistance of modified asphalt concrete greatly improve the skid resistance of pavement, enhance the bearing capacity of pavement and reduce the aging of asphalt.
Eight, project payment
My project department has paid all the money for the project around the bowl, and all the debt disputes such as labor, machinery and materials have nothing to do with the construction unit.
Nine, construction experience
1. Problems in old road reconstruction
During the construction, the design unit increased the original pavement, which affected the drainage of some villagers' houses in the village area after the highway was improved, causing great inconvenience to the villagers along the road. On the other hand, after the improvement of the road surface, the width of the road surface becomes narrower, which brings great hidden dangers to the driving safety belt.
2. The comprehensive construction team is weak in quality awareness.
In the process of pouring kerbs, some comprehensive construction teams don't have a strong sense of quality, and in order to save costs, too many flaky are added. After the inspector of our project department found it, he immediately reworked it and poured it again, and imposed economic penalties on it.
3. Collation of engineering data, data is an indispensable part of a project. Therefore, it is suggested that the owner formulate a unified standard after the contractor enters the site. First, the arrangement of data is well-founded; Second, reduce unnecessary delays and rework; Thirdly, it laid a good foundation for the future completion acceptance.
Although some achievements have been made in the reconstruction project of Wanzhou line surface, we also clearly see our own shortcomings and gaps. In the future, we will constantly improve ourselves, turn the gaps and problems into the driving force and direction of progress, cheer together with the vast number of highway workers and work hard for the highway cause with Qixin!
He' nan Sheng Da construction engineering co., ltd
20 10 year1February
Construction summary report
I. Overview of the Project
Wanzhou Line Wancheng-Xinfangwa Highway starts at Wancheng Village, Jinmiaopu Town, Zezhou County, and ends at the intersection of Xinfangwa Village and 207 national highway in Lichuan Town, Zezhou County. Along the way, it passes through Fengmen, Kounan Bay, Dakou, Huabu City, Jiaquan, Shanjie, Aihezhang, Huxianling, Caozipu, Lanche, Shuikui, Jinmiaopu, Cao Shi, Tianjingguan and Tianshui Ling.
The whole line adopts the technical standard of Grade III highway, with the design speed of 30 km/h and the subgrade width of separated section of 7.5 meters. The remaining technical indicators shall meet the specified values in Technical Standard for Highway Engineering (JTGB0 1-2007) issued by the Ministry.
The commencement date of this contract section is April 30, 2007 and the completion date is September 30, 2007.
Main project contents:
(1) subgrade engineering
1，9343㎡； Excavation of old pavement;
2. Slurry rubble drainage project with a capacity of 3342.27m3；;
3. Protection Works 140.67m3
(2) Pavement engineering
1. 20cm thick cement stabilized macadam subbase is 98770m2；;
2. The cement stabilized macadam subbase with a thickness of15cm is 75075m2.
3, 20cm thick cement stabilized macadam base173845 m2; ;
4. Permeable oil: 307457m2；;
5. Adhesive coating oil:190499m2; ;
6. 6cm fine-grained asphalt concrete pavement116958m2;
7.6cm medium-grained asphalt concrete pavement 190499m2
8. 4cm modified asphalt concrete pavement190499m2; ;
9.9069m3 rubble concrete kerb.
() safety engineering
C25 concrete guardrail is 2024m3.
Second, the establishment of the organization
1, personnel entry and management organization setting
Our company set up the Bowl Line Project Management Department to be fully responsible for the implementation of the Bowl Line Reconstruction Project. Yao Haidui, the manager of the management department, is responsible for all the work of macro-control projects, and Cheng Dongfang, the deputy manager, assists the project manager in the quality, progress and safety of the projects. Zhao Jinsheng, technical director, is responsible for overall technical work and assists the project manager in solving technical problems. At the same time, there are six departments: construction team, survey team, laboratory, material and equipment logistics department, machinery team and comprehensive office, which are responsible for the construction tasks of this project.
2. Input of mechanical equipment
According to the requirements of the owner and supervision engineer on the construction period and progress, our project manager department has successively put in 1 water stabilized mixing station, 35 vehicles (Cummins 15t), 2 excavators (Komatsu 220 and 300 models), 3 loaders (50 models) and 2 vibratory rollers (YZ 18J). Two vibratory rollers (model CA30), 180 grader, 1 paver, 8500 paver and 1 asphalt mixing station.
Three. quality management
(A) measures to control the quality of the project
1. Seriously study and implement the spirit of the National Conference on the Quality of Infrastructure Construction Projects, implement the notice of the General Office of the State Council on strengthening the quality management of infrastructure construction projects, and establish the responsibility system of project quality leadership in this project, with the project manager taking the main responsibility, and the leaders and technical leaders at all levels of the construction unit taking corresponding legal and technical responsibilities for the project quality. Conscientiously implement the lifelong responsibility system for project quality, strengthen construction management, standardize market behavior, clarify responsibilities, and ensure high-quality projects.
2. Strengthen quality awareness, conscientiously implement the policy of "quality first, a long-term plan", and run the work of creating excellence through the whole process of construction and production. In the aspects of construction team selection, organization setting, construction scheme, management system, etc. Closely around the goal of excellence, to ensure and improve the quality of the project as the main line, comprehensively organize the construction and production.
3, strengthen the quality assurance system headed by the first manager at all levels, complete with strong relevant personnel, so that leaders at all levels, business departments, on-site command and operation teams have clear quality responsibilities, timely reward and punishment assessment, and fully mobilize the enthusiasm of all employees to create excellence.
4. Strengthen close cooperation with owners, supervisors and design units, actively listen to the opinions of supervision engineers, and realize the quality work pattern of "four in one" joint excellence.
5. Deploy capable management personnel and construction team, strengthen quality awareness education, education and training and technical assessment of all contractors, and adhere to the system of holding relevant certificates.
6. Improve the internal inspection system, assign quality inspection engineers from the inspection institutions at the next higher level, and implement the supervision separation system managed by the Construction Technology Department and monitored by the Quality Inspection Department, based on self-inspection and self-control, so as to ensure the realization of the goal of creating excellence. Take the "one-time inspection qualification rate" of the on-site quality inspection engineer as the assessment index to improve the seriousness and authority of engineering inspection.
7, improve the incentive mechanism and restraint means, take regular appraisal, implement the quality veto system, and use economic leverage to ensure the project quality.
8. Strengthen process quality control, organize production in strict accordance with ISO9002 quality assurance mode, and formulate operation standards, process standards and inspection standards for each working procedure and each link according to the construction technical specifications, quality inspection evaluation standards and quality requirements of bidding documents and construction contract terms. Record the implementation of process standards, so that all processes can be connected in an orderly manner.
9, the preparation of practical implementation of the construction plan, according to the requirements of the node time limit for a project, phased control, to achieve balanced production, to create conditions to ensure the quality of the project.
10, it is planned to set up a site laboratory to strictly control the inspection of finished products, semi-finished products and raw materials to ensure that the materials are qualified, the information is complete and the test data is accurate; Take effective inspection measures to control the engineering quality; Strictly control measurement, regularly inspect and evaluate all measuring equipment in use according to regulations, and put them into use after passing the inspection.
1 1. All completed works in this contract section, especially culvert works and protection works, shall be guarded and protected by special personnel before handover to ensure that the completed works are in good condition.
12, strengthen the construction technology management, adhere to the technology compound system, and adopt effective technical management means to improve the project quality. The management department shall set up a precision survey team to be responsible for the control survey network and retest in the construction stage of this contract. Engineering and technical personnel shall ensure that the construction drawings, technical disclosure and construction survey are timely, accurate and correct, and implement the technical disclosure review and signature system. All drawings disclosure and survey lofting data must be reviewed and signed by the technical director before they can be delivered to the construction, and all data should be kept intact for verification.
(2) Self-inspection of construction project quality and handling of project quality problems.
First, strict management. Establish and improve various quality management systems. There is not only a quality assurance system, but also a target responsibility letter signed with various construction teams, outsourced machinery, equipment and vehicles, which is decomposed layer by layer and the responsibility lies with people. Problems, in strict accordance with the provisions of the responsibility system shall be investigated for responsibility.
The second is strict quality inspection. My project department has a special person to carry out the test and quality inspection, operate in strict accordance with the specifications, increase the frequency of test and detection, and speak with data. When laying cement stabilized macadam base, the operator shall conduct EDTA determination and water content detection for 3-5 times for each working section. Once it is found that it does not meet the test requirements, it should be adjusted immediately until it is qualified. When paving asphalt concrete pavement, it is strictly required to test the penetration, ductility and softening point of each modified asphalt, and randomly check the specifications of the incoming mineral aggregate. Measure the water content every morning and inform the control room. Do a set of Marshall test and extraction test of asphalt mixture every morning and afternoon to monitor the fluctuation of various quality indexes.
Third, strict supervision procedures. In the construction, we insist that after each working procedure is completed, we will never enter the next working procedure without the approval of the resident supervision engineer.
(3) Evaluation of finished quality
The pavement reconstruction project around the bowl line undertaken by our project department is an excellent project with straight line shape and smooth and dense asphalt concrete surface.
Fourth, the construction progress control
After the project started, we took action immediately, actively grasped the preparatory work and set up a leading group for the preparatory work. First, organize engineers and technicians to check the design drawings and engineering quantity drawings of the project on the spot, and have a good idea of the existing problems. At the same time, the local natural conditions such as hydrology, geology, climate, traffic and local resources, as well as the construction site and construction conditions were fully investigated, which provided a scientific and reasonable basis for the preparation of construction organization design and the construction progress of the project.
In 2007, after the project leading group officially issued the commencement order, the mechanical equipment, construction personnel and materials needed for the project entered the site on time, and the production started quickly, especially the asphalt mixing station. According to the characteristics of the bowl-shaped line project, our unit purchased 2000 large-scale equipment and reserved modified asphalt for later use.
Verb (abbreviation of verb) construction safety and civilized construction
Our project department always insists on "safety first, quality first". Safety is the key to the survival and development of stone production enterprises, and safety is benefit.
Safety production management embodies people-oriented. Full-time security officers shall be set up on the construction site, responsible for fire prevention, theft prevention, pollution prevention, gas poisoning prevention, fighting prevention and other safety work. In mechanical construction, special attention should be paid to cultivating the awareness of safe operation and safe production of mechanical personnel to prevent all kinds of mechanical accidents.
Our project department has established a complete safety management system, from the project manager to the basic technicians, everyone shoulders the mission of safe production, and there is no worker casualty in the whole project.
In terms of construction organization, the project department also pays special attention to civilized production, pays attention to the fact that production activities can't disturb people, and also pays attention to the coordinated relationship with local people, and puts the construction site management in a very important position.
In terms of building a clean government, our project department requires all construction personnel, especially the heads of various departments, to take the lead in honesty and self-discipline, consciously accept the supervision of party organizations and the masses, insist on starting from me, set an example, always keep in mind honesty and keep clean everywhere, set an example for the following construction personnel with practical actions, and form a positive and good fashion in construction.
VI. Environmental Protection and Land Saving Measures
My project department attaches great importance to environmental protection in the construction, not only at the expense of the surrounding environment, but also pays attention to harmony, consistency and beauty with the surrounding environment, mainly including the following points:
1, the waste residue of our project department should be piled up in the designated place and never abandoned;
2. Both sides of the highway should be kept clean and beautiful.
Seven, the application of new technology, new material and new technology in construction.
When paving asphalt concrete pavement with empty roadway, most sections of the long line around the bowl belong to sharp bends and steep slopes, and the oil surface is prone to displacement and stuffing. After adjusting the rolling direction of vibratory roller, it is effectively controlled. SBS modified asphalt concrete was used in the construction of heavy driveway in our project department, and the stability of asphalt concrete surface was controlled. At the same time, the high-temperature softening resistance and low-temperature cracking resistance of modified asphalt concrete greatly improve the skid resistance of pavement, enhance the bearing capacity of pavement and reduce the aging of asphalt.
Eight, project payment
My project department has paid all the money for the project around the bowl, and all the debt disputes such as labor, machinery and materials have nothing to do with the construction unit.
Nine, construction experience
1. Problems in old road reconstruction
During the construction, the design unit increased the original pavement, which affected the drainage of some villagers' houses in the village area after the highway was improved, causing great inconvenience to the villagers along the road. On the other hand, after the improvement of the road surface, the width of the road surface becomes narrower, which brings great hidden dangers to the driving safety belt.
2. The comprehensive construction team is weak in quality awareness.
In the process of pouring kerbs, some comprehensive construction teams don't have a strong sense of quality, and in order to save costs, too many flaky are added. After the inspector of our project department found it, he immediately reworked it and poured it again, and imposed economic penalties on it.
3. Collation of engineering data, data is an indispensable part of a project. Therefore, it is suggested that the owner formulate a unified standard after the contractor enters the site. First, the arrangement of data is well-founded; Second, reduce unnecessary delays and rework; Thirdly, it laid a good foundation for the future completion acceptance.
Although some achievements have been made in the reconstruction project of Wanzhou line surface, we also clearly see our own shortcomings and gaps. In the future, we will constantly improve ourselves, turn the gaps and problems into the driving force and direction of progress, cheer together with the vast number of highway workers and work hard for the highway cause with Qixin!
He' nan Sheng Da construction engineering co., ltd
20 10 year1February