大直径盾构下穿地铁车站结构变形数值分析  

NUMERICAL ANALYSIS OF STRUCTURE DEFORMATION OF LARGE-DIAMETER SHIELD TUNNELING CROSSING UNDERNEATH THE SUBWAY STATION

作　　者：张远明 宋明 ZHANG Yuanming;SONG Ming(CCCC Second Highway Consultant Co.,Ltd.,Wuhan 430056,China)

机构地区：[1]中交第二公路勘察设计研究院有限公司,武汉430056

出　　处：《低温建筑技术》2020年第5期87-90,100,共5页Low Temperature Architecture Technology

摘　　要：以一大直径盾构隧道下穿地铁车站工程为背景,研究盾构掘进施工对车站结构变形的影响情况。通过建立结构-土体三维有限元模型模拟盾构施工过程,分析车站结构的变形、抗拔桩的位移,以及周围土体的位移变化。结果表明盾构施工对地铁结构变形和抗拔桩位移的影响均较小;车站正下方区域外的施工引起的结构底板和抗拔桩竖向位移影响有限。Taking a large-diameter shield tunnel project under the subway station as the case,the influence of shield tunneling construction on the deformation of the station structure was studied.A three-dimensional finite element model was established to simulate the shield construction process,in which theuplift piles displacement,the structure deformation,and the surrounding soil deformationwere analyzed.The results show that the effects of shield construction on the deformation of the subway structure and the displacement of the uplift piles are small,in addition,the effect of the vertical displacement of the structural floor and the uplift piles caused by the construction outside the station area is limited.

关 键 词：地铁车站 盾构隧道 抗拔桩 变形影响 

分 类 号：TU94[建筑科学—建筑技术科学]