【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.更多还原

【Abstract】 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.更多还原