岩土力学2012，Vol.33Issue(2)：343-348,6.
高临界循环荷载水平下钻孔桩的抗拔性状分析
Uplift behaviors of bored piles subjected to high critical cyclic loading level
张忠苗 1谢志专 1赵玉勃 1李慧明2
作者信息
- 1. 浙江大学岩土工程研究所软弱土与环境土工教育部重点实验室,杭州310027
- 2. 广州大学工程抗震研究中心,广州510405
- 折叠
摘要
Abstract
In order to study the behaviors of uplift pile subject to cyclic load, cyclic loading tests are carried out on two uplift piles at Xiaoshan, Hangzhou. Stress gauges and steel pipes are pre-buried in the test pile to measure the changes of pile shaft stress and the pull-out amount of both pile tip and pile head. Through the analysis of the pile shaft stress and the pull-out amount, the influence of cyclic load on bearing capacity and pull-out amount are studied. Comprehensive analysis of the pull-out amount, pile shaft force and pile side friction, it is drawn a conclusion that the uplift pile damaged after two or three cycles when uplift pile subjects to cyclic load, and the critical cyclic load level is close to 1.关键词
抗拔桩/循环加载/桩侧摩阻力/桩身应力Key words
uplift pile/ cyclic loading/ pile side friction/ pile shaft stress分类
建筑与水利引用本文复制引用
张忠苗,谢志专,赵玉勃,李慧明..高临界循环荷载水平下钻孔桩的抗拔性状分析[J].岩土力学,2012,33(2):343-348,6.
