盾构隧道管片接头在内爆炸作用下的动力反应  

Analysis on Dynamic Response of a Shield Tunnel Under Internal Explosion Loading

作　　者：邬玉斌[1] 刘如山[2] 田志敏[2,3] 

机构地区：[1]北京市劳动保护科学研究所,北京100054 [2]中国地震局工程力学研究所,哈尔滨150080 [3]总参工程兵科研四所,北京100850

出　　处：《武汉理工大学学报》2011年第7期107-111,142,共6页Journal of Wuhan University of Technology

基　　金：国家重点基础研究发展计划(973项目)(2007CB714203)

摘　　要：为了研究盾构隧道管片接头在内爆炸作用下的动力反应特点,基于显式动力分析软件LS-DYNA程序,以典型地铁区间盾构隧道为例,建立了考虑管片-管片、管片-螺栓及管片与周围土体界面接触效应的三维计算模型,研究了盾构隧道在内爆炸冲击荷载作用下的破坏机理,揭示了管片和连接螺栓的破坏特征。计算结果表明,提高连接螺栓强度和延性可改善盾构隧道的抗爆特性。In order to study the dynamic response characteristics of segment joint of shield tunnel under internal explosion loading, a three dimensional FEM model of dynamic response of a typical metro running shield tunnel is proposed.This model can simulate the contact effects of segment-segment,segment-bolt and segment-soil based on the nonlinear dynamic analysis software LS-DYNA.The failure mechanism of a shield tunnel under internal explosion loading is analyzed and the failure characteristics of segment and bolt are revealed.The analysis results show that the blast-resistant characteristics of shield tunnel can be improved by enhancing bolt strength and tenacity.

关 键 词：冲击荷载 盾构隧道 破坏特征 动力反应 

分 类 号：O354.5[理学—流体力学] TU352.1[理学—力学]