All say that it is a solid foundation, anti settlement, but what is the specific principle of the ah? To the ground where a few concrete pillars will be able to prevent settlement?
Simply, generally speakingThe pile is provided to bear the weight of the building. The bearing capacity of the foundation soil under some very poor, not up to the corresponding capacity to undertake the building, the pile foundation, one end is connected with the building, one end of the deep and good soil or rock.
Such as poor soil, unable to bear the upper part of the building, the pile buried in the formation of soil and interaction of piled up foundation, bearing capacity, can be based on natural.There are anti uplift pile, and some pure underground garage, underground water buoyancy force, piling after the friction between the pile and soil to resist water buoyancy
It supports the whole building. (some very it takes long, the friction between the pile and soil to provide capacity, do not need to enter the good earth.)And in the composite foundation pile, cement mixing pile, such as fly ash gravel pile, equivalent is used to reinforce the foundation.
