大连理工大学学报2015，Vol.55Issue(3)：305-311,7.DOI:10.7511/dllgxb201503012
静载及循环荷载下砂土中复合桩基承载特性模型试验研究
Research on model tests of bearing capacities for composite pile foundation under static and cyclic loading in sand
摘要
Abstract
With the wide application of pile foundation ,there are more and more researches on the bearing mechanism between the pile and soil .According to the contact between pile and soil ,a large proportional pile-soil model test was adopted ,and in order to simulate the friction effect of pile and soil better ,the pile material was improved in the test ,and a set of loading and measuring apparatuses were developed to adapt the vertical static and cyclic loading .The tests of vertical static and cyclic loading were taken on the composite pile foundation in sand ,and the pile top settlement ,the axial force and lateral friction resistance of pile ,pile bottom reaction force were analyzed .The experimental results show that the pile performances are enhanced with the increasing of the loading numbers :the pile top settlement being improved by 29 .6% , the axial force being improved by 40 .4% , lateral friction resistance being decreased ,pile bottom reaction force being increased by 50% ,and the pile ultimate bearing capacity being increased by 25% , which provides a reference for the study of interaction between pile and soil under different loading conditions for the serviced pile foundation in the future .关键词
静载/循环荷载/复合桩基/承载特性/模型试验Key words
static loading/cyclic loading/composite pile foundation/bearing capacities/model test分类
交通工程引用本文复制引用
胡娟,宋一凡,贺拴海..静载及循环荷载下砂土中复合桩基承载特性模型试验研究[J].大连理工大学学报,2015,55(3):305-311,7.基金项目
交通运输部建设科技项目(2012319223020) （2012319223020）
中央高校基本科研业务费专项资金资助项目(2013G1502019) （2013G1502019）
陕西铁路工程职业技术学院常规项目(2013-48 ) （2013-48 ）
陕西省教育厅专项科研计划资助项目 . （）
