Development of Integrated Civil infrastructure Management System

我国的桥梁、隧道、水坝等民用基础设施是政府和纳税人的巨大投资。为了安全、经济和可持续性，必须谨慎管理这项投资。我们必须最大限度地发挥民用基础设施系统的生命周期效益，通过平衡安全、经济和可持续性要求来满足社会需求。寿命周期成本分析和设计是民用基础设施系统以尽可能低的寿命周期成本确保足够的寿命可靠性的重要问题。本研究试图开发一个基于生命周期分析的现有民用基础设施修复策略决策支持系统。首先，与现有结构修复、修复和更换技术研究小组（REHATEC）和国际桥梁维护与安全协会（IABMAS）的所有成员合作，新开发了一个综合桥梁管理系统（J-BMS），主要用于现有的混凝土桥梁。该系统不仅能够对现有构件的可用性进行评估，而且还提供了基于维护成本最小化和质量最大化相结合的策略。为解决这一优化问题，采用了遗传算法。将这些算法应用于优化问题，可以快速找到近似最优解（恢复策略）。接下来，将这些方法扩展到现有的混凝土隧道结构和其他民用基础设施，以证明所提出的桥梁管理系统的适用性。

Civil infrastructures such as bridges, tunnels, dams in our country represent a huge investment on the part of governments and taxpayers. This investment has to be prudently managed for safety, economy, and sustainability. We must maximize the life-cycle benefits of our civil infrastructure systems to serve the needs of our society by balancing the safety, economy, and sustainability requirements. Life-cycle cost analysis and design are important issues for civil infrastructure systems to insure an adequate level of lifetime reliability at the lowest possible life-cycle cost.This study attempted to develop a decision support system for rehabilitation strategies of existing civil infrastructures based on life cycle analysis. At first, an integrated bridge management system (J-BMS) was newly developed collaborated with all members of the Technical Research Group on Repair, Rehabilitation and Replacement Techniques of Existing Structures (REHATEC), and of the International Association for Bridge Maintenance and Safety (IABMAS) for mainly existing concrete bridges. This proposed system is able to not only evaluate the serviceability of existing structure members, but also offer some strategies based on a combination of maintenance cost minimization and quality maximization approach. For solving this optimization problem, the Genetic Algorithms were adopted. By applying these algorithms to the optimization problem, the approximation optimal solution (rehabilitation strategy) could be quickly found. Next, those manners were extended to existing concrete tunnel structures as the other civil infrastructures so as to demonstrate the suitability of proposed bridge management system.