水平荷载下套管桩基的非线性响应分析  

Study on nonlinear response of casing pipe pile to lateral loads

作　　者：王腾[1] 李大勇[2] 张玉哲[1] 

机构地区：[1]中国石油大学华东石油工程学院,东营257061 [2]山东科技大学土木建筑学院,青岛266510

出　　处：《岩土力学》2006年第S2期836-838,共3页Rock and Soil Mechanics

基　　金：国家自然科学基金资助(No.50409007)

摘　　要：提出了用新型套管桩基来提高海洋平台桩基水平承载力和减小平台响应幅值。采用 p-y 曲线法来模拟桩土间的相互作用,对套管桩基进行非线性响应分析,研究了套管的埋深和宽度对桩身变形和土抗力的影响,并与普通桩基进行了对比分析。研究表明,套管桩基能充分发挥桩土间的相互作用,提高桩基的水平承载力,减小桩基的水平响应。A new type of casing pipe pile foundation is presented to increase the offshore pile foundation lateral capacity or decrease the lateral displacement.The nonlinear response of the casing pile under lateral load is studied by means ofp-y curves.The influence to the pile response of the depth below the seafloor and the width of the casing pipe is investigated and compared with the common pile.The results show that the casing pipe can excite the pile-soil interaction effectively and increase the pile foundation capacity and decrease its response to lateral loads.

关 键 词：套管桩 桩土相互作用 P-Y曲线 非线性 海洋桩基 

分 类 号：TU473.1[建筑科学—结构工程]