PCC桩水平承载特性足尺模型试验研究  

Full-scale model tests on behavior of cast-in-place concrete pipe piles with large diameter under lateral loads

作　　者：刘汉龙[1,2] 张建伟[1,2] 彭劼[1,2] 

机构地区：[1]河海大学岩土力学与堤坝工程教育部重点实验室,江苏南京210098 [2]河海大学岩土工程科学研究所,江苏南京210098

出　　处：《岩土工程学报》2009年第2期161-165,共5页Chinese Journal of Geotechnical Engineering

基　　金：国家自然科学基金项目(50778063);江苏省自然科学基金创新学者攀登项目(BK2008040);江苏省“333高层次人才培养工程”基金资助

摘　　要：桩在水平荷载作用下的受力性状是一个复杂的桩土相互作用过程。针对双层地基中现浇混凝土大直径管桩(以下简称PCC桩)受水平荷载的问题,利用河海大学岩土所自行研制开发的大型试验模型槽进行水平承载桩静载足尺模型试验,实测得到了水平荷载下PCC桩与土共同作用时的工作性状,分析了PCC桩受水平荷载时的内力、变形、极限承载力和桩侧土压力分布等。试验结果可为今后类似土层下水平受荷PCC桩的设计与研究提供参考。The behavior of pile under lateral loads is a very complex process of pile-soil interaction. Aimed at the problem of the interaction behavior of the laterally loaded cast-in-place concrete thin-wall pipe piles （PCC piles） installed in double-layered soils, full-scale model tests are carded out using large test trench developed by Hohai University. The interaction behavior of the lateral loaded PCC piles in double-layered soil is obtained, and the internal force and deformation of piles, the critical beating capacity, and lateral soil pressure can be obtained from the full-scale test. These experimental results are useful for the practical engineering and analysis of PCC piles in the same areas.

关 键 词：水平受荷 PCC桩 双层地基 足尺试验 

分 类 号：TU473[建筑科学—结构工程]