文章摘要
陆旭泽,张盛,陈飙松,白杨.基于SiPESC.FEMS的隧道施工数值模拟构架[J].,2020,60(1):1-9
基于SiPESC.FEMS的隧道施工数值模拟构架
Numerical simulation framework for tunnel construction based on SiPESC.FEMS
  
DOI:10.7511/dllgxb202001001
中文关键词: 隧道施工数值模拟  弹塑性分析  生死单元  埋入单元  SiPESC.FEMS
英文关键词: tunnel construction numerical simulation  elasto-plastic analysis  birth-death element  embedded element  SiPESC.FEMS
基金项目:国家重点研发计划资助项目(2016YFB0200702);国家自然科学基金资助项目(11761131005);辽宁省自然科学基金资助项目(2019-ZD-0021).
作者单位
陆旭泽,张盛,陈飙松,白杨  
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中文摘要:
      基于开放式结构有限元分析软件系统SiPESC.FEMS及其弹塑性分析构架,结合隧道结构设计常用的地层结构模型理论思想和相关技术,实现了一种隧道施工有限元分析计算构架.该构架通过地应力平衡分析计算围岩的初始应力,利用SiPESC.FEMS弹塑性分析功能,实现地应力平衡多步序分析所需的加载和卸载过程.利用SiPESC.FEMS对单元和材料属性数据的灵活管理,实现生死单元技术.利用SiPESC.FEMS对多种单元和多点约束的支持,实现埋入单元技术.利用SiPESC.FEMS动态任务流程配置,搭建了多分析步隧道施工计算流程.数值算例表明,该构架适用于隧道施工过程的数值模拟,能有效地计算出地应力平衡过程的应力变化,并对隧道施工方案进行优化.
英文摘要:
      Based on the open system of finite element analysis software SiPESC.FEMS and its elasto-plastic analysis framework, a new finite element analysis algorithm framework for the tunnel construction is realized with the commonly used stratum structure model theory and related technologies. In this framework, the initial stress of the surrounding rock is calculated by geostatic equilibrium analysis. The loading and unloading process required in multi-step analysis for crustal stress balancing is implemented by using elasto-plastic analysis in SiPESC.FEMS. The technology of birth-death element is realized benefiting from the flexible management of elements and properties in SiPESC.FEMS. The technology of embedded element is achieved by the employment of multipoint constraint method in SiPESC.FEMS. The task flow of multi-step analysis in tunnel construction is constructed by the configuration of dynamic task flow from SiPESC.FEMS. Numerical examples show that the new framework is suitable for the numerical simulation of tunnel construction process and it can be used to calculate the stress change in the process of crustal stress balancing effectively and to obtain the optimal tunnel construction scheme.
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