PHC管桩抗震性能试验及数值模拟  

Seismic performance test and numerical simulation of prestressed high-intensity concrete pile

作　　者：戎贤[1,2] 宋鹏[1,2] 李艳艳[1,2] 

机构地区：[1]河北工业大学 土木工程学院 [2]河北工业大学 河北省土木工程技术研究中心,天津300401

出　　处：《桂林理工大学学报》2014年第3期473-478,共6页Journal of Guilin University of Technology

基　　金：河北省建设科技研究计划项目(20122027);河北省高等学校科学技术研究青年基金项目(Q2012083)

摘　　要：对3根PHC管桩进行了抗震性能拟静力试验,对其在低周往复荷载作用下的受力状态、破坏机理、恢复力特性进行了分析,得到了添加非预应力筋和剪切端勾型钢纤维对PHC管桩抗震性能的影响规律,并采用非线性有限元方法对PHC的受弯承载力进行了模拟分析。结果表明,配置一定数量非预应力筋可以改善管桩的抗震性能;而剪切端勾型钢纤维的加入则对其抗震性能影响不大,同时有限元所建立的计算模型是合理可行的,模拟结果与试验结果吻合较好。Based on the experiment of three seismic performance PHC pile under low cyclic reversed lateral load,influence law about adding non-prestressed reinforcement and shear end hook steel fiber pile on seismic behavior was got according to the analy of stress state,failure mechanism,restoring force characteristics.The flexural strength of PHC are simulated and analyzed by nonlinear finite element method.The results show that a certain number of non-prestressed reinforcement configuration can improve the seismic performance of pile, adding cut end hook steel fiber while adding hook style steel fiber at the end of shear side has little effect on its seismic performance.The finite element calculation model established is reasonable and feasible.Calculation and analysis in good agreement with the experimental results was obtaind.

关 键 词：预应力高强混凝土管桩 抗震性能 延性 非预应力筋 非线性有限元分析 

分 类 号：TU473.13[建筑科学—结构工程] TU311.3[建筑科学—土工工程]