The railway project shall be submitted to the competent department for completion and acceptance

The following conditions shall be met for the completion of the construction project:

1. Complete the construction project design and the contents agreed in the contract.

The design of the construction project and the content agreed in the contract mainly refer to the scope of work determined in the design documents and specified in the "List of Projects Contracted by the Contractor" in the contract, as well as the work content determined in the change notice issued by the supervising engineer.

2. There are complete technical files and construction management materials.

Engineering technical files and construction management data are one of the important bases for project completion acceptance and quality assurance, mainly including the following files and materials;

1) Project completion report.

2) List of engineering and technical personnel of sub-projects, sub-projects and units;

3) Drawing review and design disclosure records;

4) Design change notice, technical change verification order;

5) Investigation and processing data after the occurrence of engineering quality accidents;

6) Concealed acceptance records and construction logs;

7) as-built drawings;

8) Quality inspection and evaluation data, etc.;

9) Other materials agreed in the contract.

3. There are quality certification materials and test and inspection reports of materials, equipment and components.

For the entry of the main building materials, building accessories and equipment used in the construction project, in addition to the quality certification materials, there shall also be a test and inspection report. The test and inspection report shall indicate its specifications, models, which parts of the project, batch batches, performance and other technical indicators, and its quality requirements must meet the standards stipulated by the state.

4. There are quality qualification documents signed by survey, design, construction, engineering supervision and other units.

Survey, design, construction, engineering supervision and other relevant units shall inspect and evaluate the completed project in accordance with the quality standards required by the engineering design documents and the contract, and sign the qualified documents if they meet the requirements. The national mandatory standards for completion acceptance include civil engineering, installation engineering, civil air defense engineering, pipeline engineering, bridge engineering, electrical engineering and railway construction and installation engineering acceptance standards.

5. There is a project quality warranty signed by the construction unit.

The project quality warranty signed by the construction unit and the construction unit is also one of the conditions for delivery and acceptance.

The acceptance work of the construction unit shall be implemented under the guidance of the competent department of construction and transportation of the Ministry of Railways.

The procedures for project acceptance are roughly as follows:

1. The construction team shall self-inspect and receive the self-inspection work carried out after the completion of the project section on the same day, and the results of the self-inspection shall be indicated;

2. The project department has completed the project since acceptance, and the project has been installed and debugged at this stage, and the project quality and design are checked to meet the requirements;

3. The company will collect the random inspection, and the random inspection will be carried out according to a certain proportion, without all the inspections, and if the inspection is unqualified, it will be processed in accordance with the process.

1. What is project acceptance?

Project acceptance refers to the process of evaluating the quality and results of project construction according to relevant industry standards after the completion of the project. It is composed of three parts: the self-inspection and collection of the construction team, the self-acceptance of the completion of the project department, and the company's random inspection and collection.

Second, the project acceptance business process.

The business process of project acceptance is composed of three parts: the self-inspection and collection link of the construction team, the self-acceptance link of the completion of the project department, and the random inspection and collection link of the company.

1. The construction team self-inspects and collects.

It mainly refers to the self-inspection and collection of each key process link carried out by the construction team in order to control the quality of the project during the construction process, and the self-inspection and collection before the concealment of various concealed projects. The specific requirements are that the construction team shall conduct a self-inspection after the completion of the project section on the same day and after the end of the work ticket, and the self-inspection results shall include the person in charge of the project section and the scope of the project section, so as to establish a quality traceability card and a statistical mechanism for the progress and quantity of the project.

2. The project department completes the project from acceptance.

It refers to the acceptance of all engineering projects after the installation and commissioning, and is an important part of the comprehensive assessment of the construction work and the inspection of whether the project meets the design requirements and the quality of the project, and it is the last procedure of the whole process of construction, and it is also the last work of the project management.

3. The company will inspect and collect.

Mainly in the project department to submit the completion self-inspection evaluation report and project completion materials, the project department completed projects for random inspection. In the process of random inspection, the nonconforming items shall be dealt with in accordance with the quality inspection standards, and the defective items shall be notified to the project of the rectification requirements.

Acceptance of the general rules of the formwork and the support (arch) frame should have sufficient strength, stiffness and stability; It can withstand the gravity, lateral pressure and construction load, construction equipment and materials of the poured concrete and masonry for construction process design, and its elastic compression, precamber and settlement value should meet the design requirements. The formwork and the supporting (arch) frame must be placed on a reliable substrate that conforms to the design, and have sufficient supporting area and anti-drainage, anti-freezing or anti-freezing measures. The formwork and the support (arch) and the scaffold shall not be connected to each other.

Before pouring concrete or masonry masonry, the construction unit shall carry out handover inspection of the formwork and support (arch) frame to form a construction disturbance record. During the construction process, the formwork and the support (arch) should be observed and maintained; When abnormal conditions such as mold running and deformation are found, the construction should be stopped, measures should be taken, and a record should be formed. The sequence and safety measures of formwork and support (arch) dismantling must comply with the provisions of the construction organization design.

Formwork and support (arch) installation Main control project The material quality and structure of the formwork and support (arch) must meet the requirements of construction process design. Inspection quantity: all inspections by the construction unit and the supervision unit.

Test Method: Observation and Measurement. The formwork installation must be stable and reliable, the joints must be tight, and no slurry leakage.

The contact surface between the formwork and the concrete must be cleaned and coated with a separator. Before pouring concrete, the stagnant water and debris in the model should be cleaned up. Number of inspections:

The construction unit and the supervision unit are all inspected. Test Method: Observation.

General items The allowable deviation and inspection method of template installation shall comply with the provisions of the table unless there are special provisions in the relevant professional acceptance standards. Table Allowable deviation and test method of template installation Serial number item allowable deviation test method 1 axis position foundation 15 feet measurement of not less than 2 beams, columns, plates, walls, arches 5 2 surface flatness 52m ruler and feeler gauge not less than 3 3 3 elevation foundation 20 measurement beams, columns, plates, walls, arches 5 4 lateral bending column of the template h 1000 pull line ruler 1500 5 beams, columns, plates, walls, arches The inner width of the two templates 10 -5 feet is not less than 3 6 beam bottom mold camber 5 -2 pull line ruler measurement 7. The surface height of the adjacent two plates is 2 feet Note: 1 h is the height of the column.

2 l is the span of beams and plates. Inspection quantity: all inspections by the construction unit.

In addition to the special provisions of the relevant professional acceptance standards, the allowable deviation and inspection method of the embedded parts and reserved holes shall comply with the provisions of the table. Table Allowable deviation and inspection method of embedded parts and reserved holes Serial number item allowable deviation (mm) inspection method 1. The center position of the reserved hole is 10 feet Measure Size 10 0 feet Measure not less than 2 places 2 The center position of the embedded parts is 3 feet Measure Inspection quantity: all inspections by the construction unit.

In the process of acceptance of railway engineering, it must meet the national regulations of the railway concrete and masonry engineering construction quality acceptance standards for acceptance verification, if there is no relevant acceptance of the standards will be re-constructed by the construction party, because the quality of the railway involves the safety of many people, so any problems can not be ignored.

(1) The quality of the sub-projects contained in the unit project shall be accepted. The main purpose is to check whether the acceptance of the branch project is correct and whether there are any defects.

2) The quality control data should be complete. What is the completeness of quality control data, in fact, is a relative concept, should depend on the characteristics of the project and the existing data, the focus is to see whether it reflects the structural safety and use function, whether to meet the design requirements. The project of quality control data should be verified in strict accordance with the unit project quality control data checklist, so that the project is complete, the data is complete, and the data is complete.

3) The test data of the sub-project related to the structural safety and use function of the unit project should be complete. The inspection of the structural safety and use function of the branch project is the content added to the revision of the standard inspection, with the purpose of ensuring the safety and function of the project and ensuring the final quality of the project. Although some of these inspections and tests are done during the construction process, they should also be checked and confirmed during the acceptance of the unit project.

4) The results of the spot check of the main functions shall comply with the provisions of the relevant standards and specifications. In order to ensure the use of the function of the project, the detection of some projects is carried out after the completion of the branch project, and the unit project is not repeated when it is accepted; Some are carried out after the completion of all the unit projects, and the random inspection items are determined by the acceptance team, and the random inspection results should comply with the provisions of the relevant standards and specifications.

5) The acceptance of the perceived quality should meet the requirements. Perception quality acceptance is an important evaluation work, and it is a comprehensive inspection of the quality of the project on the spot. In particular, it is necessary to inspect the contents that cannot be inspected at the time of inspection batch acceptance or that cannot be inspected at that time, as well as items that have undergone quality changes later.

First of all, it is clear that the acceptance of visual quality is by no means a simple appearance inspection, nor is it a re-inspection of the project involving the appearance quality after the completion of the unit project, nor is it to guide the construction unit to make one-sided excessive investment in the appearance of the project, and the focus is not to appear projects that affect the safety of the structure and the use of functions. The purpose of visual quality acceptance is to intuitively verify the safety, reliability, performance and use function of the project from a macro perspective, and promote the quality control of the construction process. The content should be key, the method should be simple, and it should not be complicated and one-sided.

The standard of the perception quality inspection project is qualified, and if it is not qualified, it is poor, and the poor project should be repaired. In addition, not all projects are subject to visual quality inspection, and there are corresponding regulations for each professional standard inspection in this regard.

Provisions on the quality acceptance of the branch project: the quality of the sub-project contained in the branch project shall be qualified; Quality control data should be complete; The results of inspection and sampling test related to structural safety and use function shall comply with relevant regulations. The quality acceptance of the branch project includes the following three aspects:

1) The quality of the sub-projects contained in the sub-project should be accepted, which is also a statistical summary work, and attention should be paid to checking whether there are any missing sub-projects, and whether the acceptance of each sub-project is correct.

2) The quality control data should be complete, which is also a statistical summary work, mainly to check whether the acceptance data, construction operation basis, and quality records of the inspection batch are complete and complete, and whether they fully reflect the quality status.

3) Whether there are any defects in the inspection and sampling test items related to structural safety and use function, whether the test records meet the requirements, and whether the test results meet the requirements and design requirements of the standard inspection.