|Table of Contents|

Post-earthquake repair sequence optimization of urban rail transit system(PDF)

长安大学学报（自然科学版）[ISSN:1006-6977/CN:61-1281/TN]

Issue:
2025年6期
Page:
216-226
Research Field:
交通工程
Publishing date:

Info

Title:
Post-earthquake repair sequence optimization of urban rail transit system
Author(s):
DONG Zheng-fang1;  LI Le-yi1;  ZAN Zi-hui2;  DAI Peng-xiang1;  LI Yun-hua1
(1. School of Civil and Architectural Engineering, Henan University, Kaifeng 475004, Henan, China; 2. Guangzhou Metro Design & Research Institute Co., Ltd., Guangzhou 510010, Guangdong, China)
Keywords:
traffic engineering;  urban rail transit system;  repair sequence optimize;  NSGA-Ⅱ
PACS:
U239.5
DOI:
-
Abstract:
In order to improve the seismic resilience of urban rail transit system, based on complex network theory and seismic resilience evaluation theory, the post-earthquake structural repair sequence of urban rail transit system was optimized. Firstly, the performance response function of urban rail transit system was defined from three perspectives: unit failure, network connectivity and network transportation function. Based on this, the corresponding restoring force was obtained, and the comprehensive restoring force was obtained by weighted sum. Secondly, aiming at maximizing the single dimensional resilience, a single-objective optimization model of urban rail transit system was established and solved by genetic algorithm. Further, considering the maximum three-dimensional resilience, a multi-objective optimization model of urban rail transit system was established and solved by multi objective genetic algorithm(such as improved non-dominated sorting genetic algorithm-Ⅱ(NSGA-Ⅱ)). Finally, taking Zhengzhou rail transit network as a typical case, the post-earthquake structural repair sequence was optimized. Six repair conditions were set up, including single-objective optimization of structural failure, single-objective optimization of network connectivity, single-objective optimization of network function, multi-objective optimization, random repair and preference repair. The results show that the restoring force of the optimized repair sequence is higher than that of the random repair, with an increase of 0.8%-12%. Comprehensive restoring force of multi-objective optimization repair sequence is the largestand 4%-6% higher than other working conditions. Therefore, by optimizing the repair sequence of the post-earthquake structure, the seismic resilience ofurban rail transit system can be effectively improved, and the multi-objective optimization can obtain the optimization scheme with the largest comprehensive restoring force of the system. The research in this paper can provide reference for the post-earthquake repair work of urban rail transit system.8 tabs, 14 figs, 27 refs.

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Last Update: 2025-12-20