PHC管桩抗震性能试验研究  

Seismic Performance Test Research of PHC Pile

作　　者：戎贤[1,2] 贾楠[1,2] 李艳艳[1,2] 

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

出　　处：《郑州大学学报（工学版）》2013年第4期24-27,共4页Journal of Zhengzhou University（Engineering Science）

基　　金：河北省自然科学基金资助项目(E2011202013)

摘　　要：通过对5根PHC管桩进行低周往复加载,分析其受力状态、破坏形态、承载力、滞回曲线、延性等抗震性能指标,研究桩径、有效预应力及配置非预应力筋对PHC管桩抗震性能的影响.结果表明:PHC管桩的抗震性能随着桩径的增加而降低;随着桩身有效预应力的提高,试件破坏的脆性特征及刚度退化现象减弱,抗震性能有所改善;而配置一定数量的非预应力筋可使其抗震性能得到明显改善.In order to investigate the effect of the pile＇ s diameter, pile body＇ s effective prestress and configu- ration of a certain number of non prestressed reinforcement on seismic behavior of PHC pile, five PHC piles were tested under low cyclic loading. The damage characteristic, bearing capacity, hysteretic curve and duc- tility were analyzed. It is shown that the seismic performance of PHC pile was reduced with the increase of the pile＇s diameter and with the improvement of pile body＇ s effective prestress. The configuration of a certain number of non prestressed reinforcement can effectively improve the level of the pile＇ s seismic performance.

关 键 词：PHC管桩 低周往复荷载 延性 抗震性能 

分 类 号：TU378[建筑科学—结构工程]