深基坑受力与变形空间效应分析  

STRESS AND DEFORMATION ANALYSIS OF DEEP FOUNDATION PIT

作　　者：米忠山 赵延林 曹岩 MI Zhongshan;ZHAO Yanlin;CAO Yan(School of Civil Engineering,Heilongjiang University of Science&Technology,Harbin 150000,China)

机构地区：[1]黑龙江科技大学建筑工程学院,哈尔滨150000

出　　处：《低温建筑技术》2022年第2期145-149,共5页Low Temperature Architecture Technology

摘　　要：结合某地铁车站深基坑工程,为了展开对深基坑受力与变形空间效应研究。运用Midas GTS NX有限元分析软件建立数值模型,模拟分析基坑周边地表沉降、桩身整体水平位移、桩身整体弯矩空间效应。分析表明基坑周边地表沉降跨中位置,沉降值最大,几乎不受坑角效应影响。坑角附近沉降值最小,受坑角效应影响显著。基坑中部桩身水平变形最大,几乎不受坑角效应影响。坑角附近桩身水平变形最小,受坑角效应影响显著。坑角附近桩身弯矩最小,受坑角效应影响显著。基坑中部桩身弯矩几乎不受空间效应影响。Combined with the deep foundation pit engineering of a subway station,the spatial effect of force and deformation of deep foundation pit was studied.Midas GTS NX finite element analysis software was used to establish a numerical model to simulate and analyze the spatial effect of the surface settlement around the foundation pit,the overall horizontal displacement of the pile,and the overall bending moment of the pile.The results shows that the largest surface settlement around the foundation pit is in the middle of the span,which is almost not with pit angle effect,whereas the settlement value near the pit angle is the smallest and is significantly affected by the pit angle effect.The horizontal deformation of pile in the middle of foundation pit is the largest,and it is almost not affected by pit angle effect.The horizontal deformation of pile near the pit angle is minimal,and it is significantly affected by the pit angle effect.The pile bending moment near the pit Angle is the smallest,which is significantly affected by the pit angle effect.The bending moment of pile in the center of foundation pit is almost not affected by space effect.

关 键 词：深基坑 空间效应 数值模拟 土体开挖 

分 类 号：TU473.2[建筑科学—结构工程]