考虑土体剪胀的静压单桩挤土效应  

Effects of single jacked pile driving considering soil＇s dilation

作　　者：鹿群[1,2] 

机构地区：[1]浙江大学土木工程系,浙江杭州310027 [2]天津市城市建设学院土木系,天津300384

出　　处：《地基处理》2007年第1期9-13,共5页Journal of Ground Improvement

摘　　要：在大型通用软件ANSYS平台上对静力压桩的连续贯入的全过程进行有限元模拟，给出了土体剪胀对挤土位移及应力的影响规律。利用位移贯入法使桩体贯入，考虑了弹塑性本构关系、自重应力场、大变形和桩-土滑动摩擦等复杂问题，更符合静力压桩的实际，具有仿真效果。The complete process of successive penetration of single jacked pile is simulated withfinite dement method based on the commonly used large - scale software ANSYS, and compactingeffects considering soil＇ s dilation are analyzed in detail. Some complex problems , such aselastoplastic constitutive law, stress field of soil＇ s dead weight, large deformation and shdingfriction between pille and soil, are taken into account by using the displacement penetrationmethod which is more reahty and has the effect of animated simulation.

关 键 词：静压单桩 挤土效应 有限元分析 位移贯入法 剪胀 

分 类 号：TU753.3[建筑科学—建筑技术科学]