摘要
为了明确预应力锚固支护的加固效果与工作性能,使用快速拉格朗日差分软件FLAC3D,实现岩土预应力锚固支护数值模拟。考虑锚固支护施工顺序,对比分析边坡锚固支护的塑性破坏发展方向与屈服规律,构建弹塑性模型用作计算在预应力情况下岩土变形所产生的变量,通过模拟岩土的接触关系,组建锚固支护模型与预应力施加方法,同时设定模拟边界,利用有限差分软件LLAC3D构建有限差分模型,对岩土工况的预应力锚固支护完成数值仿真。仿真结果证明,FLAC3D可以精确的评定预应力的数值,为维护岩土自身强度和稳定性提供坚实理论基础,保证了工程施工安全。
FLAC3D was adopted to achieve the numerical simulation of prestressed anchor support in geotechnical engineering for clarifying the reinforcement effect and working property of prestressed anchor support.Based on the construction sequence of anchor support,the plastic failure development direction and yield law of slope anchorage support were analyzed,and the elastic-plastic model was utilized to calculate the variables produced by the deformation of rock and soil under prestressed state.According to the contact relationship between the simulated rock and soil,the anchoring support model and the method of prestressing force were established.Meanwhile,the simulation boundary was set,and the finite difference software LLAC3D was used to construct the finite difference model,completing the numerical simulation of prestressed anchor support in geotechnical conditions.The simulation results show that FLAC3D can accurately evaluate the value of prestress,thus can ensure the construction safety and provide theoretical basis for maintaining the strength and stability of rock and soil itself.
作者
盛晓杰
陆汉光
SHENG Xiao-jie;LU Han-guang(Jinjiang College,Sichuan University,Meishan Sichuan 620860,China)
出处
《计算机仿真》
北大核心
2021年第2期206-209,295,共5页
Computer Simulation
关键词
有限差分软件
锚固支护
预应力
弹塑性
数值模拟
Finite difference software
anchor support
prestress
elastoplastic
numerical simulation
