摘要
通过FLAC3D程序,用实体单元模拟了岩体和砂浆体,用结构单元来模拟锚索,对锚索施加预应力时采用的建模方法是在边坡和锚索间建立刚性连接,代替在锚头的位置施加均布力的方法,建立预应力锚固数值仿真模型。通过模拟试验,分析了岩体单元以及砂浆体单元的应力云图等,更加清晰地显示了拉力集中型预应力锚索作用下岩体沿锚索轴向的应力、砂浆体应力分布等情况。
In this paper.the rock and mortar is simulated by solid mass element,the cable is simulated by structural element,the prestress is applied to the cable according to the new method in FLAC3D program,that is to say,rigid link is established between the slope and anchorinstead of apply force to the head of cable.And then the numerical simulation model of prestress anchorage is established,After that, rock and mortar mass is analysed;and then the axial stress along cable in rock mass,which is affected by rally concentration anchor cable are displayed more clearly.
出处
《中国西部科技》
2010年第2期37-39,共3页
Science and Technology of West China
关键词
拉力型锚索
效果分析
数值模拟
锚固机理
应力云图
Rally type cable
Effect analysis
Numerical simulation
Anchoring and reinforcing mechallism
Axial stress contour
