| 偶然性内爆炸作用下盾构隧道的破坏特性分析 |
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| 引用本文： | 邬玉斌,田志敏,罗奇峰.偶然性内爆炸作用下盾构隧道的破坏特性分析[J].岩石力学与工程学报,2011,30(Z2):3434-3442. |
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| 作者姓名： | 邬玉斌 田志敏 罗奇峰 |
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| 作者单位： | (1. 中国地震局 工程力学研究所，黑龙江 哈尔滨 150080；2. 总参工程兵科研四所，北京 100850；;
3. 同济大学 上海防灾救灾研究所，上海 200092) |
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| 摘 要： | 针对拼装组合式盾构隧道的防爆炸灾害设计需要，建立考虑管片–管片、管片–螺栓及管片与周围土体界面接触效应的盾构隧道爆炸动力响应三维有限元分析模型，以典型的地铁区间盾构隧道为例，计算分析内爆炸对盾构隧道结构的破坏机制，揭示管片和连接螺栓的破坏特征，比较研究盾构隧道与整体现浇隧道的抗内爆炸特性。实例分析表明：盾构隧道结构的抗爆性能劣于整体现浇的隧道结构，管片接头是盾构隧道抗内爆炸的最薄弱部位，提高连接螺栓的强度和延性可改善盾构隧道的抗爆特性。
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| 关 键 词： | 隧道工程内爆炸盾构隧道管片接头连接螺栓破坏特征 |
| 收稿时间： | 2010-11-26; |
ANALYSIS ON FAILURE CHARACTERISTICS OF SHIELD TUNNEL UNDER ACCIDENTALLY INTERNAL EXPLOSION LOADING |
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| WU Yubin,TIAN Zhimin,LUO Qifeng.ANALYSIS ON FAILURE CHARACTERISTICS OF SHIELD TUNNEL UNDER ACCIDENTALLY INTERNAL EXPLOSION LOADING[J].Chinese Journal of Rock Mechanics and Engineering,2011,30(Z2):3434-3442. |
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| Authors: | WU Yubin TIAN Zhimin LUO Qifeng |
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| Affiliation: | (1. Institute of Engineering Mechanics，China Earthquake Administration，Harbin，Heilongjiang 150080，China；;
2. The Forth Engineer Scientific Research Institute of the Headquarters of the General Staff，Beijing 100850，China；;
3. Shanghai Institute of Disaster Prevention and Rescue，Tongji University，Shanghai 200092，China) |
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| Abstract: | In order to meet the needs of design of prefabricated assembly shield tunnel under explosion，A three- dimensional FEM model for analysis of dynamic response of shield tunnel under internal explosion loading is proposed，which can model the contact effects of segment-segment，segment-bolt and segment-soil. Taking typical metro running shield tunnel as an example，the failure mechanism and dynamic characteristics of the tunnel under internal explosion loading are analyzed. Comparison study of the blast-resistant characteristics between shield tunnel and integral cast in-situ tunnel is conducted，the failure characteristics of segment and bolt are revealed based on calculation results. Example analysis results show that blast-resistant characteristics of shield tunnel is inferior to that of integral cast in-situ tunnel，segment joint is the frail part of shield tunnel to resist internal explosion loading and enhancing bolt strength and tenacity can improve the blast-resistant characteristics of shield tunnel. |
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| Keywords: | tunnelling engineering internal explosion shield tunnel segment joint connecting bolt failure characteristics |
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