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Multiobjective Path Optimization for Critical Infrastructure Links with Consideration to Seismic Resilience

机译：考虑抗震能力的关键基础设施链路的多目标路径优化

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摘要

We study the generic problem of path optimization for a critical infrastructure link between two locations on the surface of the Earth in the vicinity of earthquake-prone areas. The problem has two (conflicting) objective functions, one for minimizing the construction cost of the link and the other for minimizing the number of potential repairs along the link in the wake of earthquakes. In our model, the Earth's surface is approximated by a triangulated manifold, and ground motion intensity data are used to provide a measure of repair rate. We approach the multiobjective variational problem by first converting it into a single objective variational problem using the weighted sum method. Then, we show that the problem can be further transformed into an Eikonal equation and solved by a computationally efficient algorithm based on the fast marching method. Extensive simulations are performed on real-world three-dimensional geographical data, from which we obtain Pareto optimal solutions that provide insight and guidance to design trade-offs between cost effectiveness and seismic resilience.
机译：我们研究地震易发地区附近地球表面上两个位置之间的关键基础设施链接的路径优化的一般问题。该问题具有两个（相互冲突的）目标功能，一个用于使链路的建设成本最小化，另一个用于使地震后沿链路的潜在维修次数最小化。在我们的模型中，地球表面由三角歧管近似，并且地面运动强度数据用于提供修复率的量度。我们首先通过使用加权和方法将其转换为单目标变分问题，从而解决了多目标变分问题。然后，我们表明该问题可以进一步转化为一个Eikonal方程，并可以通过基于快速行进方法的高效计算算法来解决。在真实的三维地理数据上进行了广泛的仿真，从中我们获得了Pareto最优解决方案，这些解决方案为设计成本效益和抗震性之间的权衡取舍提供了见识和指导。

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    Wang Zengfu; Wang Qing; Zukerman Moshe; Guo Jun; Wang Yu; Wang Gang; Yang Jun; Moran Bill;

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    Northwestern Polytech Univ, Sch Automat, Xian, Shaanxi, Peoples R China;

    City Univ Hong Kong, Dept Elect Engn, Hong Kong, Hong Kong, Peoples R China;

    City Univ Hong Kong, Dept Elect Engn, Hong Kong, Hong Kong, Peoples R China;

    Dongguan Univ Technol, Sch Comp Sci & Network Secur, Dongguan, Peoples R China;

    City Univ Hong Kong, Dept Architecture & Civil Engn, Hong Kong, Hong Kong, Peoples R China;

    Hong Kong Univ Sci & Technol, Dept Civil & Environm Engn, Hong Kong, Hong Kong, Peoples R China;

    Univ Hong Kong, Dept Civil Engn, Hong Kong, Hong Kong, Peoples R China;

    RMIT Univ, Sch Engn, Melbourne, Vic, Australia;

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