不同土层中支盘桩竖向承载特性试验研究  

TEST AND RESEARCH OF LONGITUDINAL BEARING CAPACITY OF SQUEEZED BRANCH PILE IN DIFFERENT SOIL STRATA

作　　者：徐江炳 卢成原[1] 孟凡丽[1] 

机构地区：[1]浙江工业大学建筑工程学院,杭州310032

出　　处：《建筑技术开发》2014年第8期26-29,共4页Building Technology Development

基　　金：浙江省自然科学基金(Y1080440)

摘　　要：设计了三组室内模型试验研究多支盘桩在不同土质中的承载性能。对三组试验结果分别进行了以下比较分析:相同的双盘支盘桩当上下盘处在不同土体中的承载性能差异;在不同土体中增加盘体对支盘桩承载力提高的差异;在不同土体中改变双盘桩的盘间距对支盘桩承载力的差异,并分析了造成以上差异的原因。通过以上对比分析,得出了多支盘桩在竖向荷载作用下盘体设在不同土质土层时的荷载传递规律,以及对承载力的影响因素,有关研究成果可为支盘桩的设计计算提供参考。Three indoor model tests are designed to research the bearing capacity of squeezed multi-branch pile in different soil strata.The results of these tests are compared with each other on the following aspects:difference of bearing capacity of the same squeezed double-branch pile when branches are positioned in different soil strata;difference of bearing capacity increase of squeezed branch pile when the number of branch is increased in different soil strata;difference of bearing capacity of squeezed double-branch pile when distance between the branches is changed in different soil strata.Relevant reasons for these differences are analyzed.Load transfer law and factors affecting the bearing capacity of squeezed multi-branch pile are obtained when branches bearing longitudinal load are positioned in different soil strata.Relevant research findings could provide references for design and calculation of squeezed branch pile.

关 键 词：支盘桩 承载特性 模型试验 

分 类 号：TU473.11[建筑科学—结构工程] TU473.1[建筑科学—土工工程]