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.
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.
作者
陆旭泽
张盛
陈飙松
白杨
LU Xuze;ZHANG Sheng;CHEN Biaosong;BAI Yang(State Key Laboratory of Structural Analysis for Industrial Equipment,Dalian University of Technology,Dalian 116024,China;Shanghai Institute of Spacecraft Equipment,Shanghai 200240,China)
出处
《大连理工大学学报》
EI
CAS
CSCD
北大核心
2020年第1期1-9,共9页
Journal of Dalian University of Technology
基金
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)
