CAJ | 학술논문

群桩作为桩基的一种主要形式，其受力变形特性的研究一直受到人们的重视。过去的研究主要是通过实验方法和理论分析来进行的。本文用有限元进行近域土和桩的分析，对远域土采用无限单元，在桩土接触面引入Goodman接触面单元，从而用有限元——接触面单元——无限元的耦合方法将群桩和土体作为一个整体进行弹塑性分析。分析中用修正剑桥模型进行近域土体的模拟，对桩土接触面及远域土体进行非线性分析。分析结果表明，本文的分析与实测基本吻合，说明本文的耦合方法能对群桩的受力变形特性进行较好的模拟。
군장작위장기적일충주요형식，기수력변형특성적연구일직수도인문적중시。과거적연구주요시통과실험방법화이론분석래진행적。본문용유한원진행근역토화장적분석，대원역토채용무한단원，재장토접촉면인입Goodman접촉면단원，종이용유한원——접촉면단원——무한원적우합방법장군장화토체작위일개정체진행탄소성분석。분석중용수정검교모형진행근역토체적모의，대장토접촉면급원역토체진행비선성분석。분석결과표명，본문적분석여실측기본문합，설명본문적우합방법능대군장적수력변형특성진행교호적모의。
The subject of this paper is to study the bearing and deforming behavior of group-pile. The FEM is used to simulate the piles and near-field soil mass and the IEM is adopted to simulate the piles and distant-field soil. In addition, the Goodman joint elements are introduced to the pile-soil interface. The modified Cambridge model is employed in simulating the near-field soil and the nonlinear analysis method is used in the pile-soil interface and distant-field soil. The analytical results are basically identical to the experimental ones. It is concluded that the coupled analytical method given in this paper can be used to analyze the bearing and deforming behavior of piles and soil.