地基承载力（Foundation bearing capacity）.docVIP

地基承载力（Foundation bearing capacity） Chapter x foundation bearing capacity The main points of this chapter: The foundation bearing capacity is the load that can be carried on the soil unit area of the foundation, which is one of the important problems of soil mechanics. Due to the complexity of foundation soil, it is a complicated problem to determine the ultimate bearing capacity of the foundation accurately. This learn destruction form of foundation load under the action of cutting out, in the foundation of plastic load and critical load and ultimate load, the theoretical formula for determining the bearing capacity of foundation soil, the determination of design value of subgrade bearing capacity and the factors affecting the bearing capacity of foundation soil, requiring calculation and determination of foundation bearing capacity, and learn from the formula for calculating the factors affecting the bearing capacity of foundation soil. Section 1 overview Foundation with the action of the building load, internal stress changes, shown in two aspects: one is because of the foundation soil under the building load, compression deformation caused by too much basis of settlement or differential settlement, tilting the upper structure, building subsidence; The other is because the load of the building is too large, which exceeds the ability of the soil under the foundation to withstand the load and causes the foundation to slip and destroy. Therefore, when designing the building foundation, the following conditions must be met: Foundation: strength - bearing capacity - allowable bearing capacity Deformation - amount of deformation (settlement) - permissible settlement A few nouns 1. Foundation bearing capacity: refers to the capacity of the foundation soil unit area to be able to follow the load. The foundation bearing capacity problem belongs to the strength and stability of the foundation. 2. Allowable bearing capacity: refers to the bearing capacity of both conditions