锚杆长度对隧道围岩及其锚喷支护结构的影响分析  

Analysis on the influence of bolt length on tunnel durrounding tock and its bolt-and-spraying support structure

作　　者：白联锋 李真 徐冬庆 BAI Lian-feng;LI Zhen;XU Dong-qing

机构地区：[1]战略支援部队航天工程技术大队,北京100085 [2]军事科学院国防工程研究院,北京100036 [3]北京振冲工程股份有限公司,北京100102

出　　处：《智能城市》2020年第19期36-38,共3页Intelligent City

摘　　要：为了深入了解锚杆长度对隧道围岩及其支护结构力学性能的影响,通过ABAQUS有限元软件进行仿真分析,得到了锚杆应力、衬砌内力、围岩应力与围岩随锚杆长度的变化规律。研究结果表明,随着锚杆长度的增加,锚杆应力减小;而对喷射混凝土应力、围岩应力、围岩位移的影响程度有限。In order to deeply understand the influence of bolt length on the mechanical properties of tunnel surrounding rock and its supporting structure,a highway tunnel is used as the background engineering,and the continuous mediu mmodel is used to si mulate and analyze of anchor stress,lining internal force,surrounding rock stress and surrounding rock with anchor length is obtained by ABAQUS finite ele ment software.The results show that the stress decreases with the increase of bolt length,but the influence on shotcrete stress,surrounding rock stress and surrounding rock displace ment is li mited.

关 键 词：隧道工程 锚喷支护 参数分析 

分 类 号：U451.2[建筑科学—桥梁与隧道工程] U455.7[交通运输工程—道路与铁道工程]