[1]XUAN Gongfeng,LIN Junqi,LIU Jinlong.A Method for Assessing the Overall Function Failure of Transportation Networks after an Earthquake[J].Journal of Seismological Research,2022,45(03):362-369.[doi:10.20015/j.cnki.ISSN1000-0666.2022.0037
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Journal of Seismological Research[ISSN 1000-0666/CN 53-1062/P] Volume:
45
Number of periods:
2022 03
Page number:
362-369
Column:
生命线工程系统抗震防灾专栏
Public date:
2022-06-20
- Title:
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A Method for Assessing the Overall Function Failure of Transportation Networks after an Earthquake
- Author(s):
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XUAN Gongfeng; LIN Junqi; LIU Jinlong
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(Key Laboratory of Earthquake Engineering and Engineering Vibration,Institute of Engineering Mechanics,China Earthquake Administration,Harbin 150080,Heilongjiang,China)
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- Keywords:
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transportation networks; traffic capacity; coefficient of importance; functional failure; evaluation of road conditions
- CLC:
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U491; P315.9
- DOI:
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10.20015/j.cnki.ISSN1000-0666.2022.0037
- Abstract:
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In this paper,we set the traffic network capacity as a parameter to evaluate the traffic system's function.We introduce the coefficient of importance of the road unit based on the basic attributes of the road unit and the network topology.By the help of the relation between the seismic damage to the road unit and the state of its function failure,we obtain the post-earthquake,overall capacity of the traffic network by weighted summation.Then we divide the pre-earthquake,overall capacity of the traffic network by the post-earthquake,overall capacity and obtain a ratio,which is set as an index for evaluating the traffic system's function.On the basis of the seismic damage assessment,and according to the change in road capacity,our method focuses on evaluating the level of traffic network failure,and quickly assesses the failure level of the transportation system after an earthquake.Finally,we test the feasibility of our method by an urban road network.