摘要
鉴于城市软土区基坑开挖会对临近的建筑及结构产生较大影响,文章基于有限元软件MIDAS GTS NX,模拟软土区基坑开挖对场地变形、临近隧道及建筑的影响。研究结果表明:软土区的基坑开挖,其场地位移、临近隧道及建筑结构的水平和竖向位移均随开挖深度的增加而逐渐增大;基坑降水所产生的变形量占总变形量很大的比重;软土区基坑开挖,进行数值计算时,边界距坑边的距离最好达到8~10倍的基坑开挖深度。
Considering that the excavation of soft soil foundation pits in cities will have an impact on adjacent buildings and structures,this paper uses the finite element software Midas GTS NX to simulate the impact of soft soil excavation on site deformation,adjacent tunnels,and buildings.The research results indicate that in the excavation of foundation pits in soft soil areas,the site displacement,horizontal and vertical displacement of adjacent tunnels and building structures gradually increase with the increase of excavation depth.The deformation caused by foundation pit dewatering accounts for a large proportion of the total deformation.When conducting numerical calculations for excavation of foundation pits in soft soil areas,it is recommended that the distance between the boundary and the pit edge should reach a depth of 8 to 10 times the excavation depth of the foundation pit.
作者
谭树增
TAN Shuzeng(China Coal Jiangsu Survey,Design and Research Institute Co.,Ltd,Wuxi Jiangsu 214063 China)
出处
《江苏建筑》
2024年第2期84-88,共5页
Jiangsu Construction
关键词
软土区基坑
临边结构
变形特性
soft soil foundation pit
edge structure
deformation characteristics
