Manually hollowed out belled cast in place piles when the elevation of the building changes How much

This problem depends on whether the building elevation changes upwards or downwards, and it depends on whether the structural elevation is changed for the change of the building elevation, if the change of the structural elevation is consistent with the change of the building elevation, it is solved according to the following methods:

1, elevation upward, that is, elevated, in this case, pile bottom elevation is relatively deepened, but the absolute elevation that the bearing layer is unchanged, and the elevation of the pile top increases with the increase, that is, the effective pile length becomes larger, and the engineering quantity of pile foundation is increased. In the case that the pile foundation is not constructed, the increased amount of work in this part should be considered in the budget and settlement; If it is the elevation that has been changed after the pile foundation has been constructed, then it is necessary to connect the pile, and it is also necessary to increase the amount of work, but the cost of this part of the project quantity should be greater than the cost of the unconstructed case.

2, the elevation changes downward, that is, decreases, in this case, the elevation of the pile bottom, that is, the bearing layer is also unchanged, that is, the opposite situation described above, the amount of engineering is reduced. If the elevation is changed in the case that the pile foundation is not constructed, this part of the reduced engineering quantity does not involve a claim, it should be reduced, if the elevation is changed in the case of the pile foundation has been constructed, then it is necessary to make an on-site visa to claim for this part of the reduced engineering quantity. If the pile foundation construction party also contracted the work of chiseling the pile heads, then the amount of pile heads that were excavated and transported should also be included in the claim project when making a claim.

It is mainly the impact on the quantity of the project (project cost), and nothing else.

The carrying capacity needs to be recalculated.

If it is a building + if there is not much change, there should be no problem, and the design institute needs to review the pile length if the change is large.

Summary. Hello! Adopt artificial digging pile foundation, according to the end bearing pile design, after the test excavation, it is found that the bearing layer buried depth is too large, the pile length is too long, it is difficult to meet the construction requirements, the original design unit tried to change to punch (bored) hole cast-in-place pile.

The design pile top elevation is too deep to embed, and the piling construction is solved.

Hello! After the test excavation, it was found that the buried depth of the bearing layer was too large, and the pile length was too long, which was difficult to meet the construction requirements.

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Hello friend Upon inquiry For buildings with a buried depth of more than 50 meters, pile foundation is a commonly used form of foundation. The advantage of pile foundation is that it can effectively transfer the load borne by the building to the stable soil layer deep in the foundation, so as to disperse the load, reduce the foundation settlement and gradual settlement, and ensure the stability and safety of the building. Pile foundations are not only suitable for shallow soft soil foundations, but also for deep rock foundations.

Pile foundations can be used as either a single pile or as a group of piles. The bearing capacity of the pile group foundation is higher, which is suitable for large high-rise buildings, large factories, etc. Of course, pile foundations also have disadvantages, such as deep excavation and high cost inputs, as well as complex construction processes.

Therefore, before the design project proposes to use pile foundation, detailed geological survey and mechanical calculation need to be carried out to determine the suitability and quantity of pile foundation and ensure the quality and safety of the project.

If the embedded depth is more than 50 meters, can the pile foundation be used why?

Hello friend Upon inquiry For buildings with a buried depth of more than 50 meters, pile foundation is a commonly used form of foundation. The advantage of pile foundation lies in the beam talc, which can effectively transfer the load borne by the building to the stable soil layer deep in the foundation, so as to disperse the load, reduce the settlement of the foundation and let the world gradually settle, and ensure the stability and safety of the building. Pile foundations are not only suitable for shallow soft soil foundations, but also for deep rock foundations.

The pile foundation can be used as a single pile to make the oak queen, or it can be a pile group. The bearing capacity of the pile group foundation is higher, which is suitable for large high-rise buildings, large factories, etc. Of course, pile foundations also have disadvantages, such as deep excavation and high cost inputs, as well as complex construction processes.

Therefore, before the design project proposes to use pile foundation, detailed geological survey and mechanical calculation need to be carried out to determine the suitability and quantity of pile foundation and ensure the quality and safety of the project.

If the foundation is embedded at a depth of more than 50 meters, can a pile foundation be used?

The foundation is embedded at a depth of more than 50 meters, and pile foundation can be used.