嵌岩桩桩端极限阻力分析与设计研究

现行嵌岩桩设计规范只考虑桩端岩石的单向受力状态，而实际桩端岩石的压缩变形受到横向约束的作用而处于三向受压状态。试验证明，其三轴抗压强度远高于单轴抗压强度。文中应用材料力学强度理论对桩端岩石三轴抗压强度进行了分析，并提出了嵌岩桩极限承载力标准值新的计算方法。

Ultimate Resistance Analysis and Design of Socketed Pile-Tip

Unidirectional stress of tip rock has been the sole factor to be considered in the current specification for socketed pile design,but the compression deformation of tip rock is due to three-dimensional stress under horizontal constraint in fact.It is proved that triaxial compressive strength is much higher than uniaxial compressive strength.This paper analyzes triaxial compressive strength of pile tip rock based on material mechanicalstrength theory and puts forward a new calculation method for standard value of ultimate bearing capacity of socketed pile.