铁道标准设计2016，Vol.60Issue(9)：118-122,5.DOI:10.13238/j.issn.1004-2954.2016.09.026
PBA工法中边桩参数对结构稳定性的影响研究
Influence of Side-pile Parameters of PBA Construction Method on Structural Stability
摘要
Abstract
With reference to BEIHAI North Station project of Beijing metro line 6 , the settlement of stratum, horizontal displacement of side-pile and plastic zone of the tunnel bottom are analyzed at different embedded depths and diameters of side-piles with the numerical method of FLAC3D . The results show that the settlement of surface and horizontal displacement of side-pile decrease with the increase of the embedded depth of the side-pile; when the embedded depth of side-plies is fixed, the influence on the side-pile horizontal displacement generated by varying diameter of side-pile is greater than the influence on surface settlement; the close relation between the embedded depth and the bottom plastic zone suggests that shallow embedded depth generates bigger plastic zone in the tunnel top soil mass.关键词
地铁车站/PBA工法/数值模拟/地表沉降/边桩水平位移/塑性区Key words
Metro station/PBA method/Numerical simulation/Surface subsidence/Side-pile horizontal displacement/Plastic zone分类
交通工程引用本文复制引用
刘军,荀桂富,章良兵,陈昊祥..PBA工法中边桩参数对结构稳定性的影响研究[J].铁道标准设计,2016,60(9):118-122,5.基金项目
北京市自然科学基金项目、北京市教育委员会科技计划重点项目(KZ20131001601) （KZ20131001601）
北京市属高等学校创新团队建设与教师职业发展计划项目 （）
