基于渗流—应力耦合的深基坑开挖对临近桥基的影响  

Impact of deep foundation excavation upon neighborhood bridge foundation on the basis of seepage-stress coupling

作　　者：李红亮 周小涵[2] 

机构地区：[1]上海城铁建筑科技有限公司,上海200233 [2]中铁大桥勘测设计院集团有限公司,湖北武汉430050

出　　处：《山西建筑》2017年第2期91-93,共3页Shanxi Architecture

摘　　要：利用有限元软件,建立了某地铁基坑模型,考虑基坑降水过程中渗流—应力的耦合作用,研究了强透水性地层地铁车站深基坑开挖过程对临近桥桩的影响,结果发现:考虑基坑降水渗流—应力耦合作用后,基坑开挖变形比不考虑渗流—应力耦合作用时加大;临近桥桩受到基坑开挖和基坑降水的影响,在施工中应注意保护。The thesis studies the impact of deep foundation excavation of subway station with strong permeability stratum upon neighborhood bridge pile,uses finite element software,establishes the subway foundation model,and takes seepage-stress coupling action into consideration of deep foundation dewatering process. Results show that： the foundation excavation deformation will increase with considering foundation dewatering seepage-stress coupling rather than without considering seepage-stress coupling; the neighborhood bridge pile is easily influenced by foundation excavation and foundation dewatering,therefore,it is necessary to protect the neighborhood bridge pile in construction.

关 键 词：地铁 深基坑 渗流—应力耦合 桥墩 

分 类 号：TU463[建筑科学—结构工程]