锚杆设计参数对拉锚式支护结构水平位移的影响  

The influence of the bolt parameters on the horizontal displacement of tension-anchor supporting structure

作　　者：王光勇[1] 刘希亮[2] 倪红梅[1] 杨超[1] 

机构地区：[1]焦作工学院土木建筑工程系,河南焦作454000 [2]山东大学岩土工程中心,山东济南250061

出　　处：《焦作工学院学报》2003年第3期200-203,共4页Journal of Jiaozuo Institute of Technology(Natural Science)

摘　　要：利用FLAC3D商业软件对基坑工程拉锚式支护结构的锚杆设计参数(锚杆长度、锚杆倾角及锚杆刚度)对支护结构水平位移的影响进行了数值模拟.模拟结果表明:随着锚杆长度增加,最大水平位移减小,锚杆长度控制在1.5～2.0倍开挖深度之间为宜;锚杆倾角在15～30°之间对最大水平位移的影响不大;锚杆刚度在18.75GPa左右比较合适.In this paper,the effect of the bolt design parameters of the foundation pit engineering on the horizontal displacement of tension?anchor supporting structure is performed by FLAC3D.Numerical simulation results show that the maximum horizontal displacement decrease with the increase of the bolt length,which is fit for being controlled between 1.5 and 2.0 times of the excavation depth.At the same time,the dip angle of bolt doesn't influence on the maximum horizontal displacement when it is between 15° and 30°.The study also shows that the stiffness of bolt can not be too large or too small,and it is more fitful when the stiffness reaches 18.75?GPa.

关 键 词：锚杆设计参数 基坑工程 拉锚式支护结构 锚杆刚度 数值模拟 

分 类 号：TU942[建筑科学—建筑技术科学] TU753.1