PST管桩复合地基在岩溶地区适用性研究  

The research on applicability of PST pipe pile composite foundation in karst area

作　　者：何本春 龙林川 张信贵[1] 韩伟 张懿丹 HE Benchun;LONG Linchuan;ZHANG Xingui;HAN Wei;ZHANG Yidan(Collge of Ciwvil Engineering and Architecture,Guangxi University,Nanning 530004,Guangxi,China;Guangxi Guimin Investment New Material Technology Co.,Led.,Nanning 530221 Guangxi,China;Design and Research Institute of Guangxi University,Nanning 530004 Guangxi,China)

机构地区：[1]广西大学土木建筑工程学院,广西南宁530004 [2]广西桂民投新材料科技有限公司,广西南宁530221 [3]广西大学设计研究院,广西南宁530004

出　　处：《工程建设》2021年第4期68-72,共5页Engineering Construction

基　　金：国家自然科学基金项目(51268003、59868001)。

摘　　要：岩溶地区工程地质条件复杂,灌注桩风险大,桩身质量容易出现问题。本文通过现场试验及原位测试,对岩溶地区PST管桩刚性复合地基进行了适用性研究,结果表明:地基处理后桩间土、PST管桩及复合地基的承载力和变形均能满足要求,可对岩溶地区地基处理设计提供一定参考。The engineering geological conditions in karst areas are complex,the risk of cast-in-place piles is high,and the quality of the pile is prone to problems.In this article,a research on the applicability of PST pipe rigid composite foundations in karst areas is conducted through field tests and in-situ tests.The results show that after the foundation treatment,the bearing capacity and deformation of the intersoil,PST pipe piles and composite foundation can meet the requirements,which can provide references for the design of foundation treatment in karst areas.

关 键 词：PST管桩 刚性桩复合地基 原位测试 

分 类 号：U445.72[建筑科学—桥梁与隧道工程]