Reinforcement and optimization of seismic connectivity of key transportation hubs based on minimum cost

Hongjun Cui, Fei Wang, Xia Li and Minqing Zhu

Physica A: Statistical Mechanics and its Applications, 2020, vol. 540, issue C

Abstract: It is essential for the traffic network to retain its traffic carrying capacity after a disastrous earthquake, such that emergency resources can be dispatched to the epicentral area in a timely manner. Due to limited resources, it is important to reinforce appropriate road units of the transportation network system considering the strategic budgeting. The aim of this work is to establish the optimal program to maximize the evacuation capacity of the traffic network after disaster. The Monte Carlo simulation method is used to calculate the connectivity between the epicentral area and the outside world. In order to find out the road unit that has the greatest impact on the connectivity of the transportation hub city, the edge-adding method is proposed. And the feasibility of this method is verified by the simulated traffic network. Numerical experiments show that the edge-adding method can effectively solve the problem. The optimization scheme obtained by the edge-adding method facilitates transportation efficiency most effectively. The efficiency of emergency response can also be improved using this method, thereby increasing the ability of infrastructure systems to recover after earthquakes.

Keywords: Road network reliability analysis; Seismic connectivity reliability; Monte Carlo simulation method; Edge-adding method (search for similar items in EconPapers)
Date: 2020
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Citations: View citations in EconPapers (1)

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Persistent link: https://EconPapers.repec.org/RePEc:eee:phsmap:v:540:y:2020:i:c:s037843711931814x

DOI: 10.1016/j.physa.2019.123231

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