Pile foundation construction refers to making columnar piles from reinforced concrete, steel, wood, etc., and then driving or pressing them into the ground with pile driving machinery until the soil is solid, or forming holes first and then pouring them into concrete. Column pile body, a process to enhance the bearing capacity of the pile cap. So what precautions should be taken during pile foundation construction?

1. Construction of abutment pile foundations and adjacent pier pile foundations on soft soil subgrade is not allowed until the settlement of the soft foundation is stable. Prior to construction of the pile foundation at this location, special approval from the General Manager's Office for soft foundation monitoring must be obtained before construction can begin.

2. The volume of the mud pool should not be smaller than the volume of the pile. The pulping tank and the sedimentation tank must be separated (that is, the sedimentation tank and the mud tank should be set up separately, and the sedimentation tank should be larger than the mud tank). The depth of the tank should not be less than 1.5m, and care should be taken not to cause pollution to the surrounding environment; the sedimentation tank should be cleaned in time Sedimentation material plays the role of sedimentation tank.

3. During the process of pile foundation hole formation, slag should be scooped out and recorded frequently in order to accurately judge the geological changes. Pile foundations in soft foundation sections should be constructed according to the principle of "slow advancement and frequent circulation".

4. The pile foundation hole formation should be recorded and signed every day, and the supervision engineer will sign and confirm the day's hole formation record. The geological description in the record sheet should be confirmed and filled in by the contractor's technical person in charge. When entering the micro-weathering layer and the subsequent rock-embedded range, the contractor's technical person in charge must obtain confirmation from the supervision engineer before filling it in. If the supervision engineer deems it necessary, he may ask the owner's representative and the design representative to confirm on-site together.

5. The contractor should save and mark the slag samples from the final hole of the pile foundation and the lightly weathered slag samples that have begun to enter the rock-embedded range. The slag samples will be retained until completion acceptance and with the consent of the owner. It can be discarded later.

6. The on-site determination of rock formation types is mainly based on the geological data, drilling slag sampling and drilling records provided by the design. If the changes in the rock formation are very different from the design data and it is difficult to determine whether there are special circumstances such as boulders, interlayers, caves, etc., it should be determined through geological supplementary drilling.

For more information about engineering/service/purchasing tender document writing and production to improve the bid winning rate, you can click on the official website customer service at the bottom for free consultation: /#/?source=bdzd