超载下桩锚支护基坑的受力与变形分析  

Analysis of stress and deformation of foundation pit supported by pile anchor under overload

作　　者：王彩蒙 宇云飞[1] 朱常志[1] 刘明珠 WANG Caimeng;YU Yunfei;ZHU Changzhi;LIU Mingzhu(College of Urban and Rurual Construction,Hebei Agricultural University,Baoding 071001,Chian)

机构地区：[1]河北农业大学城乡建设学院,河北保定071001

出　　处：《河北农业大学学报》2020年第3期136-140,共5页Journal of Hebei Agricultural University

基　　金：河北省建设科技研究指导性计划项目(2016-236).

摘　　要：以某桩锚支护结构的基坑工程为例,利用FLAC3D软件,建立了基坑周边是否有超载的数值分析模型。对不同开挖工况下的支护桩水平位移与弯矩、锚索轴力以及基坑周边地表附加沉降进行了分析,揭示了基坑开挖与既有建筑物的相互影响规律。所得成果对类似工程的基坑支护设计具有参考价值。Taking the foundation pit with the pile anchor support structure as an example,the numerical analysis model deciding whether there is overload around the foundation pit is established by using FLAC3D software.Horizontal displacement and bending moment of supporting piles,axial force of anchor cables and surface additional settlement around foundation pit under different excavation conditions are analyzed,and the law of interaction between foundation pit excavation and existing buildings is revealed.The results obtained have the reference value for the design of foundation pit support of similar projects.

关 键 词：深基坑 既有建筑 桩锚支护 数值分析 

分 类 号：TU473[建筑科学—结构工程]