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为实现高强让压锚杆的剪切加固与主动让压性能在商业软件中的数值模拟,依据高强让压锚杆的力学模型和变形模式,考虑其横向剪切性质及主动让压性能,利用FORTRAN语言平台对材料二次开发,并嵌入ABAQUS软件平台,在此基础上引入有限元强度折减法,同时从围岩与锚杆两方面评价高强让压锚杆的支护效果。结合滇中引水工程楚雄取引水隧洞支护实例,进一步验证了高强让压锚杆支护的有效性,为高强让压锚杆的数值分析提供了一种新方法和一个新平台。
In order to realize the high-strength shear reinforcement of the anchor bars and the numerical simulation of the active letting pressure performance in the commercial software, according to the mechanical model and deformation mode of the high-strength anchor bars, considering the transverse shear properties and the active letting pressure performance FORTRAN language platform for the secondary development of materials and embedded ABAQUS software platform, based on the introduction of finite element strength reduction method, and from both sides of the rock and anchor evaluation of high-strength bolt support effect. Combined with the case study of Chu-xiong diversion tunnel in Dianzhong water diversion project, the validity of the high-strength rock bolting support is verified, which provides a new method and a new platform for the numerical analysis of the high-strength rock bolting.