A Review of Researches on the Multi-disaster Scenarios and Structural Responses in Metro Shield Tunnels
(1. State Key Laboratory of Disaster Reduction in Civil Engineering, Tongji University, Shanghai 200092； 2. Department of Geotechnical Engineering College of Civil Engineering, Tongji University, Shanghai 200092; 3. Shanghai Municipal Engineering Design Institute (Group) Co., Ltd., shanghai 200092)
Abstract：
Metro shield tunnels face complex multi-disaster scenarios throughout their life cycle, mainly including the interaction of structural damage (such as material degradation and cracking) with sudden disasters (such as earthquakes, fires, and explosions). Currently, research on the structural response and failure mechanisms under these influences is still in its infancy. In this context, this paper provides a systematic review of the current researches on key issues involved in the structural response analysis of tunnels under multi-disaster scenarios. First, the definition and classification of multi-disaster scenarios are clarified based on the literature review, distinguishing between short-term sudden disasters and the broader concept of multi-disasters over the entire life cycle. Secondly, the structural response characteristics and current research status under multi-disaster scenarios are detailed at three levels: materials, components, and systems. This includes the development of concrete elasto-plastic damage constitutive models, the mechanical performance of segment joints under multi-disaster loads, and disaster response analysis at the system scale. Finally, based on the above researches, the paper proposes the following suggestions for tunnel structural research under multi-disaster scenarios: (1) further development of joint probability models for disaster chain load characteristics and determination of load values; (2) optimization of the concrete elasto-plastic damage constitutive model under multi-disaster paths; (3) study of joint response characteristics under multi-disaster scenarios through scaled and full-scale tests, and optimization of numerical simulation methods based on experimental data; (4) integration of research results from materials and components to conduct system-level random disaster response analysis and establish a framework for the quantitative risk assessment of tunnel structures under under multi-disaster scenarios.
YU Tongsheng1,
2 GUAN Linxing3 YAN Zhiguo1,
2
.A Review of Researches on the Multi-disaster Scenarios and Structural Responses in Metro Shield Tunnels[J] MODERN TUNNELLING TECHNOLOGY, 2025,V62(2): 16-26
2025, Vol. 62 