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Kim, Jeongseob
Urban Planning and Analytics Lab.
Research Interests
  • Housing Policy, Real-estate Development, Urban Regeneration, Urban Analytics, Smart Cities

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Accelerated System-Level Seismic Risk Assessment of Bridge Transportation Networks through Artificial Neural Network-Based Surrogate Model

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Title
Accelerated System-Level Seismic Risk Assessment of Bridge Transportation Networks through Artificial Neural Network-Based Surrogate Model
Author
Yoon, SungsikKim, JeongseobKim, MinsunTak, Hye-YoungLee, Young-Joo
Issue Date
2020-09
Publisher
MDPI
Citation
APPLIED SCIENCES-BASEL, v.10, no.18
Abstract
Featured Application Post-hazard flow capacity of the lifeline network and recovery strategy against natural disaster. In this study, an artificial neural network (ANN)-based surrogate model is proposed to evaluate the system-level seismic risk of bridge transportation networks efficiently. To estimate the performance of a network, total system travel time (TSTT) was introduced as a performance index, and an ANN-based surrogate model was incorporated to evaluate a high-dimensional network with probabilistic seismic hazard analysis (PSHA) efficiently. To generate training data, the damage states of bridge components were considered as the input training data, and TSTT was selected as output data. An actual bridge transportation network in South Korea was considered as the target network, and the entire network map was reconstructed based on geographic information system data to demonstrate the proposed method. For numerical analysis, the training data were generated based on epicenter location history. By using the surrogate model, the network performance was estimated for various earthquake magnitudes at the trained epicenter with significantly-reduced computational time cost. In addition, 20 historical epicenters were adopted to confirm the robustness of the epicenter. Therefore, it was concluded that the proposed ANN-based surrogate model could be used as an alternative for efficient system-level seismic risk assessment of high-dimensional bridge transportation networks.
URI
https://scholarworks.unist.ac.kr/handle/201301/48742
URL
https://www.mdpi.com/2076-3417/10/18/6476
DOI
10.3390/app10186476
ISSN
2076-3417
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UEE_Journal Papers
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