偏心荷载作用下PHC管桩的受力分析

鉴于我国现行的桩基规范和涉及桩基础的论著对已发生水平位移的桩基的分析计算还是一个空白,分析了PHC管桩在偏心荷载(桩顶横向位移)作用下的内力和偏心距(桩顶横向位移),承载力与偏心距(桩顶横向位移)的关系,以及偏心距(桩顶横向位移)的临界值,提出PHC管桩在偏心荷载作用下内力与位移的计算方法.这种方法也适应于对其他类型桩在偏心荷载(或在桩顶水平位移)作用下的承载能力作定量的评估.

Analysis of Stress of PHC Pipe Pole under Eccentric Load

As the analytical calculation of the pole foundation that has displaced horizontally is still a blank in China's current pole foundation standards and pole foundation-related works,the paper analyses the relationship between the internal force of PHC pipe pole under eccentric load(transverse displacement of pole top) and the eccentricity(transverse displacement of pole top) and between the carrying capacity and eccentricity(transverse displacement of pole top),and the critical value of eccentricity(transverse displacement of pole top),and puts forward the calculation method for the internal force and displacement of PHC pipe pole under eccentric load.This method is also applicable for the quantitative evaluation of the carrying capacity of poles of other types under eccentric load(or the horizontal displacement of pole top).