Who will preside over the meeting, and who should organize the engineering test pile

Contractor.

Pile test. It is divided into design test pile, pre-construction test pile, and post-construction test pile. (Design) pile test is the building before the foundation construction needs to be selected according to the characteristics of the soil and physical and mechanical properties in the geological survey report.

All projects should be tested after the construction of the pile foundation, and the quality assessment and acceptance should be carried out according to the pile test report (the pile test is completed after the construction).

According to the specification, there are three situations in which pre-construction pile testing must be done:

1. The design grade is a pile foundation of grade A and grade B.

2. The geological conditions are complex and the reliability of pile construction quality is low.

3. New pile type or new process adopted in the region.

After the end of construction, test pile: according to the geological report and local experience, select the characteristic value of the pile type and the vertical bearing capacity of the single pile, and randomly select a certain number of piles for dynamic measurement and static load test after comprehensive construction, so as to verify that the quality of the pile, that is, the characteristic value of the vertical bearing capacity of the single pile, meets the design requirements, and reinforcing measures should be taken when it is not met.

After the completion of the construction of the pile foundation, all projects should be tested for construction, and the quality assessment and acceptance should be carried out according to the pile test report.

When the drawings are reviewed, you can hold a pile foundation engineering pile test meeting, the main contents of the meeting: 1. The participating units have design, construction, construction, supervision, and quality and safety supervision stations; 2. Carry out pile test technology, safety disclosure, and pile position pay-off; 3. Emphasize the technical operation and process flow required for pile test construction; 4. Record of the pile test process and the whole process of pile test; 5. How to deal with problems and report problems in pile testing; 6. Conversion of oil pressure gauge data; 7. Design bearing capacity data conversion; 8. Concealed records of pile connections; 9. Introduction to the bearing layer at the pile end; 10. Pile delivery time record, etc.

Summary. Who should organize the engineering pile test needs to notify the design, survey, construction unit and construction unit to participate. The key content of the pile test is, (1) the supervision of the above content acceptance, and the pile position, elevation, pile connection, pile collection of each pile key inspection.

2) Check the specifications and models of the pile driver according to the contract. (3) When the precast pile enters the site, it is accepted by a supervisor. (4) For the first pile test, the design, survey, construction unit and construction unit shall be notified in advance to confirm the pile collection standard.

5) In the process of precast pile construction, the supervisor must stand next to the whole process and make a record of the side station on site. (6) During the construction process, the quality of the pile and the verticality of the pile must be inspected and accepted, and when the pile is closed, the supervisor must hammer the pile at the last 1m of the hammer number, the depth of the soil, and the degree of penetration of the pile; The final pressure value, soil depth and pressure stabilization time of the static pile are accepted. (7) in the process of precast pile construction, if the penetration degree changes drastically, the pile body suddenly inclinates, displacements or has serious rebound, and the pile top or pile body appears serious cracks, broken, etc., the construction should be suspended, and the construction unit is notified in time, and the design is on the scene to deal with.

Who should organize the engineering pile test needs to notify the design, survey, construction unit and construction unit to participate. The key content of the pile test is, (1) the supervision of the above content acceptance, and the pile position, elevation, pile connection, pile collection of each pile key inspection. 2) Check the specifications and models of the pile driver according to the contract.

(3) When the precast pile enters the site, it is accepted by a supervisor. (4) For the first pile test, the design, survey, construction unit, and construction and demolition unit shall be notified in advance to confirm the pile collection standard. 5) In the process of precast pile construction, the supervisor must stand next to the whole process and make a record of the side station on site.

6) During the construction process, the quality of the pile and the verticality of the pile must be inspected and accepted, and when the pile is closed, the supervisor must eliminate the hammer pile of the last 1m hammer number, the depth of the soil, and the degree of penetration of the pile; The final pressure value, soil depth and pressure stabilization time of the static pile are accepted. (7) in the process of precast pile construction, if the penetration degree of travel envy drastic changes, the pile body suddenly inclination, displacement or serious rebound, pile top or pile body serious cracks, broken, etc., should suspend the construction, timely notify the construction unit, design to the scene to deal with.

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There are no regulations on who organizes the pile test.

The test pile is the responsibility of the contractor, and the supervision design has been witnessed, and the corresponding confirmation procedures have been made, which is included in the direct cost settlement.