椅式双排桩支护结构内力变形分析方法及影响因素  

Analysis Method of Internal Force Deformation and Influencing Factors of Chair-Type Double-Row Pile Supporting Structure

作　　者：贺斯顿 刘杰[1] 汪智 李义[1] 

机构地区：[1]湖南工业大学,土木工程学院,湖南 株洲

出　　处：《土木工程》2021年第4期295-303,共9页Hans Journal of Civil Engineering

摘　　要：作为一种新型的支挡结构形式—椅式双排桩,现在还没有一种有效而又简单的设计计算方法可用于工程设计,从而使得工程技术人员很困惑。本文在不考虑桩的竖向荷载传递规律及空间效应的前提下,基于Winkler地基梁基本思想,将传递矩阵法与平面杆系有限元相结合,提出了椅式双排桩内力及变形分析的混合算法,编制了相应的Matlab计算程序,并应用于实际工程,同时,进行了相应的影响因素分析。工程应用结果表明,计算位移与监测位移具有较好的一致性,理论计算结果有较好的规律性和可比性,可供椅式双排桩支护结构设计计算参考。As a new type of deep foundation pit supporting structure, there is no simple and effective design method for chair double row piles at present. Based on the basic idea of Winkler foundation beam and ignoring the vertical friction effect and spatial effect of pile-soil, this paper combines the load transfer matrix method with the plane bar system to construct the global stiffness matrix for the performance analysis of chair type double row piles, compiles the corresponding matlab calculation procedure, and carries out the corresponding engineering calculation and the analysis of the influencing factors. The engineering calculation results show that the calculated displacement and the monitored displacement have good consistency, and the calculated internal force has good regularity and comparability, which can be used as reference for the design of chair type double row pile supporting structure.

关 键 词：椅式双排桩 传递矩阵法 WINKLER地基 弹性抗力系数 

分 类 号：TU4[建筑科学—土工工程]