岩质边坡锚杆框架梁加固的有限元分析

Finite Element Analysis of Reinforcement for Rock Slopes with Rock blot(Anchor Cable) Frame Beam

针对石家庄至武汉铁路客运专线岩质边坡,采用有限元数值计算方法分析了锚杆(索)框架梁加固岩质边坡的受力情况.得到了边坡位移场和应力场分布规律和锚杆(索)轴向力的大小.计算结果表明:实际工程中采用锚杆、预应力锚索加抗滑桩这种新型的复合式支护结构能有效地限制边坡的水平位移,提高边坡的稳定性,锚索的布置和预应力设计值大小显著影响坡体内部的位移及应力场分布,研究结论对岩质边坡的工程设计具有一定的借鉴意义.

Pointed to rock slope of Shijiazhuang-Wuhan high-speed railway,the finite element method is applied to analyze the rock slope reinforced by combined action of prestressed anchor cable and rock bolt frame beam,the axial force of rock blot（Anchor Cable） and fields of the displacements and stresses are obtained.Numerical simulation results show that the horizontal displacement of rock slopes is significantly reduced and more effective to enhance the stability of rock slope reinforced by prestress anchor cable,rock bolt frame beam and anti-slide pile.Moreover,fields of the displacements and stresses in the slope are greatly related to the layout of the cables and the design magnitude of the prestress.The results would have a great reference value to engineering design of rock slopes.