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A methodology for evaluating the safety resilience of the existing tunnels induced by foundation pit excavation
Tunnelling and Underground Space Technology ( IF 6.7 ) Pub Date : 2025-01-17 , DOI: 10.1016/j.tust.2024.106362
Kaihang Han, Zhiyuan Zhai, Xiangsheng Chen, Chengping Zhang, Jiann-Wen Woody Ju, Xiaohua Bao, Shuying Wang, Beibei Hou
Tunnelling and Underground Space Technology ( IF 6.7 ) Pub Date : 2025-01-17 , DOI: 10.1016/j.tust.2024.106362
Kaihang Han, Zhiyuan Zhai, Xiangsheng Chen, Chengping Zhang, Jiann-Wen Woody Ju, Xiaohua Bao, Shuying Wang, Beibei Hou
The development of multifunctional and three-dimensional underground spaces is an effective approach to expanding human activity spaces in future megacities. It significantly enhances urban carrying capacity, disaster resilience, and robustness, reduces carbon emissions, and promotes harmonious coexistence between humans and nature. A methodology for evaluating the safety resilience of the existing tunnels induced by foundation pit excavation is proposed in this paper. Considering the technological and management factors, a detailed resilience index system is suggested. The composite performance Q of the studied system is consistently calculated by virtue of the combined weight method and the TOPSIS method. Specifically, the proposed Q is determined by the combination of Q A (existing underground structures), Q B (stratum), and Q C (adjacent construction disturbance), each with different weights. Furthermore, a comprehensive assessment of resilience R is proposed from the perspective of maximal and cumulative damage in Q . The evaluation method was conducted on an engineering project, and the effects of the three-dimensional component of Q and the deformation limits of existing structures on the evaluation results are analyzed emphatically. The results indicate that as the deformation limits of existing structures become more strict, the Q and R decrease. The methodology proposed in this paper provides essential information for the safety resilience assessment and resilience enhancement of underground structures.
中文翻译:
一种评估基坑开挖诱发的既有隧道安全韧性的方法
开发多功能、立体的地下空间是未来特大城市拓展人类活动空间的有效途径。显著提高城市承载能力、抗灾能力和稳健性,减少碳排放,促进人与自然和谐共生。本文提出了一种评价基坑开挖诱发的既有隧道安全韧性的方法。综合考虑技术和管理因素,提出了详细的韧性指标体系。所研究系统的综合性能 Q 始终通过组合权重法和 TOPSIS 方法计算。具体来说,拟议的 Q 由 QA(现有地下结构)、QB(地层)和 QC(相邻施工干扰)的组合决定,每个结构具有不同的权重。此外,从 Q 中的最大损伤和累积损伤的角度提出了对韧性 R 的综合评估。该评价方法以某工程项目为对象,重点分析了Q的三维分量和现有结构的变形极限对评价结果的影响。结果表明,随着现有结构的变形极限变得更加严格,Q 和 R 会降低。本文提出的方法为地下结构的安全韧性评估和韧性增强提供了必要的信息。
更新日期:2025-01-17
中文翻译:
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一种评估基坑开挖诱发的既有隧道安全韧性的方法
开发多功能、立体的地下空间是未来特大城市拓展人类活动空间的有效途径。显著提高城市承载能力、抗灾能力和稳健性,减少碳排放,促进人与自然和谐共生。本文提出了一种评价基坑开挖诱发的既有隧道安全韧性的方法。综合考虑技术和管理因素,提出了详细的韧性指标体系。所研究系统的综合性能 Q 始终通过组合权重法和 TOPSIS 方法计算。具体来说,拟议的 Q 由 QA(现有地下结构)、QB(地层)和 QC(相邻施工干扰)的组合决定,每个结构具有不同的权重。此外,从 Q 中的最大损伤和累积损伤的角度提出了对韧性 R 的综合评估。该评价方法以某工程项目为对象,重点分析了Q的三维分量和现有结构的变形极限对评价结果的影响。结果表明,随着现有结构的变形极限变得更加严格,Q 和 R 会降低。本文提出的方法为地下结构的安全韧性评估和韧性增强提供了必要的信息。