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| Assessing the blast resistance performance of ultra-large diameter shield tunnels passing under hazardous chemical containers at docks |
| ZHAO Zeqian1, ZHU Min1,2,3*, BAO Xiaohua1,2,3, YANG Chunshan4, CHEN Xiangsheng1,2,3
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1. College of Civil and Transportation Engineering, Shenzhen University, Shenzhen 518060, Guangdong, China;
2. State Key Laboratory of Intelligent Geotechnics and Tunnelling, Shenzhen 518060, Guangdong, China;
3. National Engineering Research Center of Deep Shaft Construction, Shenzhen 518060, Guangdong, China;
4.Guangzhou Municipal Engineering Design Research Institute Co., Ltd., Guangzhou 510120, Guangdong, China |
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Abstract To evaluate the impact resistance of super-large diameter shield tunnels under ground explosion loads, a three-dimensional refined finite element model was established using the fluid-solid coupling method. The influences on the shield tunnels under various explosive equivalents, burial depths and eccentric distances were compared. Tunnel performance indexes were formulated based on the maximum deformation and the quantity of yielded bolts. Subsequently, the tunnels were classified into four safety levels according to the post-explosion damage extent, and the influence zones of the super-large diameter shield tunnels under ground explosion loads were determined. This research could serve as a theoretical foundation for the site selection and reinforcement of shield tunnels traversing hazardous goods storage yard areas.
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Received: 20 September 2024
Published: 08 January 2025
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