盾构隧道管片接头在内爆炸作用下的动力反应

英文篇名：Analysis on Dynamic Response of a Shield Tunnel Under Internal Explosion Loading
中文刊名：武汉理工大学学报
英文刊名：Journal of Wuhan University of Technology
作者：邬玉斌 ; 刘如山 ; 田志敏
英文作者：WU Yu-bin1 ; Liu Ru-shan2 ; TIAN Zhi-min2 ; 3(1.Beijing Municipal Institute of Labour Protection ; Beijing 100054 ; China ; 2.Institute of Engineering Mechanics of the China Earthquake Administration ; Harbin 150080 ; China ; 3.The Forth Engineer Scientific Research Institute of the Headquarters of the General Staff ; Beijing 100850 ; China)
中文关键词：冲击荷载 ; 盾构隧道 ; 破坏特征 ; 动力反应
英文关键词：shock loading ; shield tunnel ; failure characteristics ; dynamic response
出版日期：2011-07-31
机构：北京市劳动保护科学研究所;中国地震局工程力学研究所;总参工程兵科研四所;
年：2011
期：07
出版单位：武汉理工大学学报

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.

引文

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