摘要
本文将《桥规》“M”法所依赖的幂级数桩基分析的概念进行了拓广和一般化,使之能用于任意多级阶梯形变截面的桩基,用矩阵运算推导了变截面单桩抗力刚度公式的一般表达式,并用三个不同的程序对一个算例按等截面和变截面的情况分别进行了计算。通过对计算结果的比较和分析,验证了推导思路的正确性,并且还得出了变截面桩基础的一些受力特点。
The concept of power series for analyzing pile foundation which forms the basis of the 'M' method defined in the bridge specification is extended and generalized in this paper for the analysis of any segmentally variable crosssection pile foundation. The context describes, through deduction with matrix calculation, the general formula expression of force-resisting stiffnesses for single segmentally variable cross-section pile. Three computer programs have been developed to calculate a pile foundation example respectively under the situation of constant and variable cross-section. By the comparison and analysis of the computation results, the extended idea is testified and some special characteristics about segmentally variable cross-section pile foundation are obtained as well.
出处
《同济大学学报（自然科学版）》
EI
CAS
CSCD
1990年第3期307-317,共11页
Journal of Tongji University:Natural Science
关键词
桥梁
变截面
桩基础
幂级数法
Bridges
Variable cross-section
Pile foundation
Power series
Analysis
