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    Optimization of Transportation-Infrastructure-System Protection Considering Weighted Connectivity Reliability

    Source: Journal of Infrastructure Systems:;2016:;Volume ( 022 ):;issue: 001
    Author:
    James C. Chu
    ,
    Shih-Chi Chen
    DOI: 10.1061/(ASCE)IS.1943-555X.0000264
    Publisher: American Society of Civil Engineers
    Abstract: This study proposes a model and a solution method to optimize protection planning for transportation-infrastructure systems such as highway networks, which are subject to disasters given a limited budget. When links of a highway network fail because of disasters, the connectivity of the highway network can be damaged and travel demand cannot be served. In this study, a situation is considered when links of a highway network can be protected against disasters to maintain its connectivity. Given that damage to a highway network caused by a disaster is probabilistic, a two-stage stochastic programming (SP) model is developed to identify the optimal protection plan that maximizes connectivity reliability for highway networks. The measure of connectivity reliability is defined as the expected number of origin–destination pair groups that can be served under all scenarios of link failure caused by a disaster. The main contribution of the model formulation is that the travel cost of alternative paths and (normal or postdisaster) travel demand can be simultaneously considered in the optimization. As the probability of failures caused by a disaster can be extremely low, the required number of scenario samplings to obtain accurate estimates for connectivity reliability could be large, which causes computational difficulty for solving the SP problem. Therefore, a solution method is developed to practically solve the SP model. The proposed methodology is demonstrated with a highway bridge system that is subject to earthquakes. Results show that the proposed model has potential for improving the connectivity reliability of highway networks that are subject to disasters.
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      Optimization of Transportation-Infrastructure-System Protection Considering Weighted Connectivity Reliability

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    http://yetl.yabesh.ir/yetl1/handle/yetl/82296
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    contributor authorJames C. Chu
    contributor authorShih-Chi Chen
    date accessioned2017-05-08T22:32:30Z
    date available2017-05-08T22:32:30Z
    date copyrightMarch 2016
    date issued2016
    identifier other48960615.pdf
    identifier urihttp://yetl.yabesh.ir/yetl/handle/yetl/82296
    description abstractThis study proposes a model and a solution method to optimize protection planning for transportation-infrastructure systems such as highway networks, which are subject to disasters given a limited budget. When links of a highway network fail because of disasters, the connectivity of the highway network can be damaged and travel demand cannot be served. In this study, a situation is considered when links of a highway network can be protected against disasters to maintain its connectivity. Given that damage to a highway network caused by a disaster is probabilistic, a two-stage stochastic programming (SP) model is developed to identify the optimal protection plan that maximizes connectivity reliability for highway networks. The measure of connectivity reliability is defined as the expected number of origin–destination pair groups that can be served under all scenarios of link failure caused by a disaster. The main contribution of the model formulation is that the travel cost of alternative paths and (normal or postdisaster) travel demand can be simultaneously considered in the optimization. As the probability of failures caused by a disaster can be extremely low, the required number of scenario samplings to obtain accurate estimates for connectivity reliability could be large, which causes computational difficulty for solving the SP problem. Therefore, a solution method is developed to practically solve the SP model. The proposed methodology is demonstrated with a highway bridge system that is subject to earthquakes. Results show that the proposed model has potential for improving the connectivity reliability of highway networks that are subject to disasters.
    publisherAmerican Society of Civil Engineers
    titleOptimization of Transportation-Infrastructure-System Protection Considering Weighted Connectivity Reliability
    typeJournal Paper
    journal volume22
    journal issue1
    journal titleJournal of Infrastructure Systems
    identifier doi10.1061/(ASCE)IS.1943-555X.0000264
    treeJournal of Infrastructure Systems:;2016:;Volume ( 022 ):;issue: 001
    contenttypeFulltext
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    DSpace software copyright © 2002-2015  DuraSpace
    نرم افزار کتابخانه دیجیتال "دی اسپیس" فارسی شده توسط یابش برای کتابخانه های ایرانی | تماس با یابش
    yabeshDSpacePersian