Measures to ensure project quality and construction period in expressway construction?

Summary of measures to ensure project quality and construction period in expressway construction: based on quality and technology management network, establish quality information network, and determine construction manager, technician and quality inspector as quality information agents. Project intends to appoint someone to be responsible for the management of quality management information files.

Measures to ensure project quality and construction period in expressway construction

The quality goal of this project is "to ensure the excellent quality level, to ensure the high quality of the province, and to strive for the best in the country".

(a) the main organization and technical measures to ensure the quality of the project

1, quality assurance system

The principle of establishing quality management assurance system in this contract section is: closely focus on quality management objectives, formulate feasible quality excellence planning, adhere to the "people-oriented" view, and realize quality control in the whole process of project construction through quality management organization, technical assurance measures and timely and accurate quality management information system.

See the block diagram of quality management and assurance system for the engineering quality management system.

2, quality management organization and project quality management responsibility system

(1) quality management organization

The project intends to set up a "quality management leading group", which is led by the manager of the project department and attended by the chief engineer of the project department, personnel of relevant business departments of the project department, captains, competent engineers and professional engineers of various construction teams. At the same time, a quality management organization with internal and external relations and vertical and horizontal positions will be formed.

(2) Quality management responsibility system

According to the goal of quality excellence, our department will establish a systematic post responsibility system after winning the bid.

3. Establish quality information network and strengthen quality management.

Based on the quality and technology management network, the quality information network is established, and the construction manager, technician and quality inspector are determined as quality information agents. Project intends to designate a person to be responsible for the quality management information file management, timely collection, transmission, sorting, classification, archiving, as a summary of the previous stage of quality management work and the determination of the next stage of work.

Block diagram of quality management and assurance system

Auxiliary basis for quality management objectives. The contents of quality intelligence information include:

(1) Conduct quality inspection and acceptance of all kinds of raw materials, finished products and semi-finished products entering the construction site.

(2) the construction organization design or construction scheme, technical disclosure, the blue prints.the design, design changes, concealed works and related quality records.

(3) Laws and regulations on project quality promulgated by the state and superior departments, as well as owners and engineers; Implement technical quality measures to ensure the quality management measures (systems) formulated by the project department.

(4) Records of previous quality inspections (including inspections by superiors and site supervisors), records and handling of quality accident investigations (including reasons for unqualified items).

(5) Collection and arrangement of new materials, new technologies, new processes and new standards.

(6) Investigation, recording and handling of mechanical equipment, measuring and testing instruments and other personnel qualities that affect the engineering quality.

(7) Management methods and means of engineering quality in other contract sections.

According to the division of responsibilities, the collection and arrangement of the above information must ensure its accuracy, timeliness, reliability and practicality.

4, technical organization measures to ensure the engineering quality

In order to achieve the first pass rate of 100% and the excellent rate of 95%, and ensure the quality level and excellent quantity, this project implements the target management of quality excellence, the lifelong responsibility system for quality objectives and total quality management, and the daily management runs in accordance with the ISO9002 quality system, strictly implements the provisions of our quality system documents, and strictly implements the standards in line with the principle of "overall excellence".

In view of the actual situation of this contract section, in the overall arrangement of bidding construction and the construction scheme of each sub-project, the specific quality measures have been considered as follows: (1) The project plans to set up a testing center, and use advanced instruments such as total station to conduct positioning control measurement on the whole contract section; Set up on-site central laboratory to manage the test and inspection work of the whole contract section in a unified way. Centralized concrete mixing, automobile transportation and structural concrete construction all adopt factory all-steel composite formwork to ensure the surface quality of the structure.

The following main guarantee measures will also be taken:

(1) Strengthen quality education and enhance the staff's awareness of excellence.

Make use of various forms of publicity and education, such as on-site quality slogans, blackboard newspapers, quality classes, on-site analysis meetings, and observation meetings, to continuously strengthen the quality awareness of all employees, so that everyone can realize that quality first and quality engineering are the needs of the survival and development of enterprises, thus firmly establishing the viewpoint of "quality first, reputation first and users first" and mobilizing the enthusiasm and consciousness of each employee to create excellence.

(2) Make an excellent plan and improve the quality assurance system.

(3) Strengthen the organization and construction of strict quality management system.

Improve the organizational system, in line with the principle of "who is in charge, who is responsible", the administrative director personally takes the lead. Set up a leading group for quality excellence, and subordinate construction teams also set up corresponding quality management institutions; Each operation team has quality inspectors, forming a top-down quality management network. Clarify the tasks, responsibilities and authority of quality inspection personnel at all levels to achieve the goal of quality excellence, and give them the veto power of quality visa for work inspection and pricing.

In the process of quality management, our department will strictly implement eight systems, namely, (1) double inspection and recheck system for engineering survey, (2) inspection and visa system for concealed works, (3) quality responsibility list system, (4) reward and punishment system for quality evaluation, (6) regular quality inspection system, (7) completion quality visa system and (8) control system for key projects. The project department shall organize regular engineering quality inspection once a month and once a week; Timely summarize and report the engineering quality of each inspection, rewarding the excellent and punishing the poor. Quality inspectors at all levels insist on regular quality inspection and supervision, solve the quality problems existing in the construction in time, prevent common quality problems, put an end to quality accidents, and keep the engineering quality under control throughout the construction process.

(4) Strengthen measurement and improve detection methods.

Set up a central laboratory in accordance with the prescribed standards, complete all kinds of testing equipment and measuring instruments and full-time measuring and testing personnel, actively use advanced testing instruments, and strictly implement the verification procedures of measuring equipment and instruments to ensure the correctness of the values. Technicians and testers should go deep into the construction site in time to carry out measurement testing to ensure the authenticity and accuracy of measurement testing data, and at the same time, repair and maintain various measurement testing instruments regularly to ensure the accuracy of testing.

(5) Adhere to standardized management and strict quality control.

Fully implement standardized management in construction. According to the relevant provisions of the current quality inspection of the state and the Ministry of Communications, the working and operating standards of each post are formulated. In construction, everything should be standardized and everything should be in accordance with standards; Standardize construction, check standards, reward and punish according to standards, and standardize operation behavior with standards.

Do a good job in technical disclosure, and make written technical disclosure for all kinds of sub-projects, so as to construct according to design drawings, specifications, procedures and standards. Check the acceptance of materials, strictly control the quality of raw materials, and all kinds of raw materials, finished products and semi-finished products must have certificates, factory certificates or inspection reports, and carry out specified sampling tests, otherwise they are not allowed to enter the site for use. Hand over the operating rules and procedures, and carry out the construction in strict accordance with the operating rules. The handover inspection of the working procedure shall be carried out according to the standard. If the previous procedure is unqualified, the next procedure is not allowed to be constructed. Ensure that the quality evaluation is good, and the projects that fail to meet the quality inspection and evaluation standards are resolutely dismantled until they meet the standards.

(6) Focus on key points and strictly control quality management points.

According to the special process and key working procedure of this project, as well as the key parts of quality and the weak links in construction, the key points of quality management are formulated. According to the characteristics, the construction technical scheme and quality control scheme of special projects are compiled, and predictive prevention and advanced control are implemented to nip in the bud and ensure the construction quality of various sub-projects and key process control points.

(7) Carry out QC group activities to overcome various common quality problems.

Actively carry out QC group activities and deepen total quality management. In the process of creating excellence, it is necessary to tackle key technical problems, pay close attention to weak links, and construct in strict accordance with the process to completely eliminate common quality problems.

5, the main technical measures to ensure the construction technology

(1) Adhere to the technical disclosure system.

Before each subdivisional work starts, the project supervisor engineer shall make technical disclosure to the operators in each working procedure. Explain the design requirements, technical standards, positioning methods, functions, construction parameters, operating points and precautions, so that all operators can know fairly well.

(2) Adhere to the process test system.

Before the new technology, new design and important conventional construction technology to be adopted in this contract section are implemented for the first time, the test unit will be arranged to conduct process tests. Adhere to the principle of "everything has been tested, everything speaks with data", optimize construction parameters and optimize resource allocation.

(3) adhere to the process of three inspection system.

Self-inspection, mutual inspection and handover inspection are strictly carried out in each working procedure; If the previous procedure is unqualified, the next procedure will not be accepted.

(4) Adhere to the concealed engineering inspection and visa system.

All concealed engineering projects, after passing the internal three inspections, shall be reported to the supervision engineer for re-inspection, and the inspection results shall be filled in and signed by both parties.

(5) Adhere to "four no-construction" and "three no-handover".

"Four no-construction" means: no construction without technical disclosure; Do not construct if the drawings and technical requirements are not clear; Surveying control signs and data shall not be constructed without review; The previous procedure shall not be constructed without three inspections. "Three non-handover" means: three inspections are not handed over without records; Technical personnel do not sign or hand over; The construction record is incomplete and handover is not allowed.

6, high temperature season concrete construction quality assurance measures

The hot and high temperature season is unfavorable to concrete construction, and high temperature will have adverse effects on fresh concrete, such as water loss, slump loss, false setting, etc., and will cause rapid evaporation of water during curing period, resulting in insufficient curing humidity, which will eventually have adverse effects on concrete strength, impermeability, stability and chemical erosion resistance. Moreover, the work efficiency of construction workers will also be affected in high temperature season. In order to ensure the quality, the following guarantee measures are formulated.

(1) Adjust the mixture ratio and design the special mixture ratio in high temperature season:

Before the arrival of hot season, the project test center plans to simulate the environment to design a special mix ratio, and adopt the method of adding retarder to design a suitable mix ratio of concrete and mortar that meets the requirements of hot season.

(2) adjust the concrete pouring time:

Try to adjust the concrete pouring time to night or when the temperature is low.

(3) Strengthen maintenance measures:

Concrete curing adopts the method of continuous curing, and a special drip curing pipeline is designated to keep continuous watering to ensure the humidity of concrete curing, and important structures are protected from the sun by sunshade.

(4) improve the working environment:

By shading the sun at the construction site, installing ventilation equipment, shortening the working hours of each shift and preparing heatstroke prevention drugs, the working environment of workers is improved and the working quality of workers is guaranteed.

(2) Main measures to ensure the construction period

In the bidding, the time limit for the contract period promised by our department is 34 months, which is 2 months ahead of the time limit required in the bidding documents. In order to ensure the realization of the above time limit for a project, the following measures are formulated:

1, guarantee the construction period organization.

After the goal is determined, organizational guarantee is the decisive factor. After winning the bid, our department will set up a "leading group to ensure the construction period" headed by the project manager and attended by relevant personnel of the project department and grass-roots construction teams, improve the post responsibility system, formulate systems and practical measures to ensure the realization of the construction period objectives.

2, guarantee measures to achieve the time limit for a project goal

(1) Dispatch elite troops nearby, enter the site early, and start work early.

After winning the bid, our bureau immediately dispatched construction management and professional and technical personnel with rich construction experience and excellent professional construction team from the above projects nearby; Set up a capable construction command organization, organize construction personnel, mechanical equipment and materials to ensure rapid entry, camp setting and construction.

(2) Establish post responsibility system and implement progress monitoring management.

Implement time limit for a project target management. Establish a post responsibility system, sign a letter of guarantee responsibility, clarify the responsibilities of managers at all levels, and improve the assessment and reward and punishment system.

Responsible for implementing the division of labor and guarding the big process according to the division of labor. Around the time limit for a project goal, make progress plans and specific measures in each stage, check the implementation every month, hold regular project meetings, keep abreast of construction trends and the progress of various projects.

Using computer and network planning technology to dynamically manage the construction period, timely adjust the progress of each sub-project, and timely adjust various production factors according to the work content and schedule requirements to meet the construction period requirements. Arrange the working procedures reasonably, firmly grasp the working procedures on key routes, and correctly handle the contradictions between working procedures, so as to make them interlocking and orderly.

Find out the reasons why the progress plan is not completed, and formulate improvement measures to make the project proceed as planned. Do monthly ten-day, monthly ten-day and quarterly total construction period.

(3) Rational allocation of resources to meet the schedule requirements.

According to the requirements of the construction period, the construction resources are reasonably allocated, and the working procedures on key lines are ensured by increasing the investment of mechanical equipment and personnel. According to the requirements of the construction progress, formulate the equipment mobilization plan and the phased supply and procurement plan of materials, and pay special attention to the implementation of the plan during the construction process.

(4) Optimize the construction scheme and organize the construction scientifically.

According to the technical difficulties and environmental characteristics of this project, the implementation construction organization design is carefully refined and the construction is scientifically organized. Adopt advanced technology to carry out the construction of each process.

For key working procedures, prepare various construction plans and make technical reserves during construction.

Put an end to the arbitrariness in the implementation of the scheme, so that the whole construction process is always under control. We will extensively carry out five activities of "small inventions, small creations, small innovations, small suggestions and small improvements" to give full play to the role of scientific and technological productivity and speed up the construction progress.

(5) Carry out labor competition and introduce competition mechanism.

In the process of engineering construction, timely organize labor competition between teams and groups. Carry out activities that compare progress, quality and safety, supplemented by economic means, mobilize the enthusiasm of the team and employees, constantly set off a construction climax, improve labor productivity, and ensure the realization of the total construction period.

(6) Strengthen dispatch and command and coordination.

Strengthen the command and coordination of construction scheduling, plan ahead and solve problems in time. For key projects or processes, compulsory means of vertical management and horizontal coordination are adopted to reduce intermediate links and improve decision-making speed and work efficiency.

(7) Do a good job in construction guarantee.

1) Coordinate the relationship with the government and nearby people, make full use of our years of construction experience in various parts of China, do a good job in advance, reduce the interference to the people, and create conditions for comprehensive construction.

2) Carefully understand the local hydrological and meteorological information, formulate feasible construction measures in special seasons, reasonably arrange the construction sequence, put them in place, and ensure the progress.

3) Effectively implement construction safety protection measures to ensure the progress.

4) Ensuring the construction quality, avoiding the influence of repeated inspection and rework on the project progress, and paying attention to quality and improvement are the effective means to ensure the construction period at present.

5) Strengthen equipment management and maintenance, improve the intact rate and utilization rate of equipment, and improve the degree of construction mechanization. Do a good job in equipment selection and spare parts supply, and implement the principle of high efficiency, durability and easy maintenance; There are many fewer models, and enough wearing parts are reserved.

6) Strengthen the supply of materials to avoid affecting the construction period due to shutdown.

3, spare and replacement equipment guarantee measures

Mechanical equipment is one of the three major elements of construction and production, and it is also the key to ensure the timely completion of the project. Therefore, according to the requirements of engineering tasks and time limit for a project, we should fully equip and equip all kinds of mechanical equipment (including vehicles), leaving enough space for spare and replacement equipment. Its safeguard measures are:

(1) The project intends to set up a leading group for equipment management, equipped with full-time equipment manager. Responsible for the management, deployment, evaluation, maintenance and repair of mechanical equipment and other daily work.

(2) Strengthen the daily management of equipment, implement the responsibility system for equipment management, and all equipment operators must hold relevant certificates.

(3) Strengthen the maintenance of mechanical equipment, and fully improve the intact rate and utilization rate of equipment through daily maintenance. On-site mechanical equipment integrity rate guarantee 100%.

(4) Spare equipment and replacement equipment (listed in the list of main mechanical equipment to be put into use) shall be sealed according to the sealing standard and maintained in rotation. The standby generator should be installed in place to ensure that it can be started at any time.

(5) After the replaced mechanical equipment reaches the intact standard, it shall be repaired and sealed immediately.

(6) The spare and replacement equipment shall enter the site at the same time as the mechanical equipment normally put into construction.

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