钢管柱桩基础自平衡静载试验及数据分析研究  

Research on Self-balanced Loading Test and Data Analysis of Pile Foundation of Steel Pipe Column

作　　者：刘佳杰 冀大亨 LIU Jiajie;JI Daheng(Beijing Municipal Road and Bridge Group Co.,Ltd,Beijing 100161,China;Beijing Urban Construction Group Co.,Ltd.,Beijing 100067,China)

机构地区：[1]北京市政路桥股份有限公司,北京100161 [2]北京城乡建设集团有限责任公司,北京100067

出　　处：《广东交通职业技术学院学报》2025年第2期27-32,共6页Journal of Guangdong Communication Polytechnic

摘　　要：自平衡静载检测方法可以在受限场地内完成对桩基承载力的检测,适用于轨道交通新建地铁车站桩基承载力检测。结合实际桩基检测试验,总结自平衡静载检测方法的实施要点,通过计算公式将检测试验数据等效转换为桩基础受到桩顶荷载时对应的位移变化,并对计算公式进行了详细说明。通过回归分析,发现试验桩基础累计位移与荷载的关系与抛物线基本一致;数据等效转换后,试验桩基础等效位移与等效桩顶荷载之间关系为线性关系。Self-balanced load testing technology can effectively evaluate the bearing capacity of pile foundation under confined space conditions,which is suitable for assessing the load-bearing performance of pile foundation in the construction of new station for rail transit systems.This paper integrates practical pile foundation testing experiments to summarize the key implementation points of the self-balanced loading test.Through a computational formula,the testing data is equivalently transformed to represent the corresponding displacement changes when the pile foundation is loaded at its top surface,and then a detailed explanation is provided for the calculation formula.Following the regression analysis,the relationship between the accumulated displacement of pile foundation and the applied load approximately follows a parabolic pattern,and after the data equivalent transformation,there exists a linear relationship between the equivalent displacement of the test pile foundation and the equivalent load at the pile top.

关 键 词：桩基础 自平衡静载试验 数据分析 回归分析 等效转换 

分 类 号：TU753[建筑科学—建筑技术科学]