A Method for Aseismic Robustness Evaluation of Transportation Networks

Abstract

The invention discloses a method for assessing the seismic robustness of a transportation network, comprising: S1, data initialization; S2, earthquake risk analysis; S3, calculation of the damage state of the transportation network; S4, calculation of the normal state function level of the transportation network before the earthquake; S5 1. Calculation of post-earthquake traffic network function loss; S6. Seismic robustness assessment of traffic network: based on the traffic function indicators of the pre-earthquake traffic area and traffic network in the target area obtained in step S4 and the post-earthquake traffic area and traffic network in the target area obtained in step S5. The traffic function index of the network is calculated, and the seismic robustness of the traffic area and the seismic robustness of the traffic network are calculated respectively. The present invention fully considers the impact of factors such as earthquake risk, seismic correlation, seismic vulnerability of traffic components, traffic flow distribution and traffic network function loss calculation on traffic network functions, and quantifies the main uncertainty factors, The performance status of the transportation network can be clearly grasped, which is helpful for decision makers to make more effective decisions.

Description

technical field [0001] The invention relates to a method for evaluating the seismic robustness of a traffic network. Background technique [0002] The occurrence of major earthquake disasters will cause huge damage to the economic and social functions of the cities in the affected areas, as well as people's lives and properties. Cities that are “resilient” have the ability to resist, adapt to, and recover from disasters quickly. As one of the key infrastructure systems at the bottom of the urban lifeline project, the improvement of the earthquake resilience of the transportation system is an important part of improving the urban disaster prevention capability. [0003] Bruneau and Reinhorn (2006) proposed four dimensions of the concept of "resilience", namely robustness, redundancy, resource allocation, and rapidity, and proposed a Q-T curve diagram of the concept of resilience. Based on the conceptual framework of resilience proposed by Bruneau et al., many scholars have ...

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Problems solved by technology

[0005] Aiming at the problems that the existing traffic indexes cannot truly reflect the functions of the traffic network and do not consider the uncertainties related to the performance indexes, the present invention provides a method for evaluating the seismic robustness of the traffic network. The present invention comprehensively considers the earthquake risk, Earthquake correlation, road structure vulnerability, traffic flow distribution, and the calculation of traffic network function loss, etc., and quantified the main uncertain factors involved, can enable people to clearly grasp the performance of the traffic network, and effectively Facilitate decision makers to make more effective decisions

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