基于原位测试的桩基水平承载力分析  

Analysis of horizontal bearing capacity of pile foundation based on in-situ test

作　　者：曹慷峰 CAO Kangfeng(Shanxi Huaye Survey Engineering Technology Co.,Ltd.,Taiyuan 030002,China)

机构地区：[1]山西华冶勘测工程技术有限公司,山西太原030002

出　　处：《粘接》2022年第3期96-100,共5页Adhesion

摘　　要：针对传统桩基水平承载力分析方法对土体参数的要求,提出采用岩土工程原位测试中的p-y曲线法对桩基水平承载力进行分析。在软土地基上对两根钻孔灌注桩进行有限元模拟,同时采用p-y曲线对钻孔灌注桩的水平承载力进行分析,结果表明:在水平荷载下,p-y曲线法能有效计算桩身水平位移、截面弯矩和土体抗力;p-y曲线计算结果与有限元数值模拟结果具有很高的拟合度,可有效反应不同土质下桩基的水平承载力变化。In view of the high requirements of soil parameters and high cost of traditional pile foundation horizontal bearing capacity analysis method,the p-y curve method based on geotechnical engineering in-situ testing technology is proposed to analyze the horizontal bearing capacity of pile foundation.Through the finite element simulation of two bored piles of a building on soft soil foundation,the results are compared with the results of p-y curve method based on geotechnical engineering in-situ testing technology proposed in this paper.It is proved that the p-y curve method based on in-situ test of geotechnical engineering proposed in this paper can effectively calculate the horizontal displacement of pile body,section bending moment and soil resistance under horizontal load;the calculation results have a high degree of fit with the finite element numerical simulation results,and can effectively reflect the changes of horizontal bearing capacity of pile foundation under different soil conditions.

关 键 词：P-Y曲线法 原位测试 桩基础 水平承载力 截面弯矩 

分 类 号：TU473[建筑科学—结构工程]