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P-Δ效应对高桩承台体系推倒分析方法的影响研究
Study of P-Δ Effect Influence on Push-over Analysis Method for Elevated Pile Foundation
【摘要】 通过对不同桩自由长度的高桩承台体系进行推倒分析,得到了考虑P-Δ效应和不考虑P-Δ效应时高桩承台体系的能力曲线,并通过定义能力减小率的方法将P-Δ效应对高桩承台体系能力曲线的影响表示出来.结果表明,当高桩承台体系进入屈服阶段以后,随着桩自由长度的增加,P-Δ效应对高桩承台体系能力曲线的影响逐渐增大.
【Abstract】 The elevated pile foundations are analyzed by using push-over analysis method due to different unconstrained lengths,and the capacity curves of elevated pile foundations are obtained with or without considering P-Δ effect.P-Δ effect influence on capacity curve is showed by capacity reduction ratio.The results show that the P-Δ effect influence on capacity curve gradually increases with the unconstrained length increasing,especially after the yield point.
【关键词】 高桩承台体系;
P-Δ效应;
推倒分析方法;
【Key words】 elevated pile foundation; P-Δ effect; push-over analysis method;
【Key words】 elevated pile foundation; P-Δ effect; push-over analysis method;
- 【文献出处】 兰州交通大学学报 ,Journal of Lanzhou Jiaotong University , 编辑部邮箱 ,2013年03期
- 【分类号】U443.2
- 【被引频次】1
- 【下载频次】32