Development of Highway Maintenance System using Deterministic Model for Structure Degradation in Cold Region

分析了阻燃剂分散性对道路运输功能和道路设施劣化的影响。这项研究的目的是加强运维系统以应对影响。首先，对支撑交通系统的路网运维技术进行了研究。在此基础上，开发了一个基于Web的数据库系统，该系统能够从时间和空间上获取冬季真实的道路交通状况。最后，对考虑旅客出行方式份额变化的防冻剂最佳分散量问题进行了检验。通过有效的道路养护和交通网络特性决定的对乘客出行行为的控制，将有效地使用防冻剂。混凝土…劣化的详细机理捕捉到了防冻剂引起的更多的e结构。对混凝土的主要材料--水泥的抗钠渗透性进行了试验研究，提出了一种新的具体方法。以钢结构为例，对维修工程优先决策系统进行了研究。并以灾害为例，尝试建立了以结构破坏为目标的分散风险体系。这些工作将使开发出不易被钠盐破坏的结构和设计良好的结构管理系统成为可能。本研究通过假设防冻剂的使用，取得了一些重要的成果，有助于道路管理系统的发展。然而，由上述技术组成的综合管理系统的开发是第一阶段的打算，只是针对我们的目标对综合管理系统的方向做出了指示。关于组织本研究中涉及的技术会产生什么样的效果，将在夹具中进行一些检查。较少

The influences from dispersion of antifireezing admixture, toward function of road transport and toward deterioration of road facilities, are analyzed in this study. This study aimes for the enhancement of systems of operation and maintenance for dealing with the influences. Firstly, an examination on the technologies of operation and maintenance for road network which support transport system is made. Then, a Web-based database system which can capture the real road traffic situation in winter, both temperaly and spatialy, is developed. Finally, an examination on the optimal amount of antifreezing admixture dispersion problem considering the changes in modal shares made by passengers is also carried out. An efficient usage of antifreezing admixture will be brought out by both technologies regarding the effective road maintenance, and regarding the control of passengers' travel behaviors determined by characteristics of transport network.A detailed mechanism of deterioration in concret … More e structure caused by antifreezing admixture is captured. An examination on the strengthening resistibility to penetration of sodium into cement, which is known as main material of concrete, is carried out, new tangible method for that is then developed. An examination on priority decision making system for maintenance and repair works is carried out by taking steel structure as an example. Furthermore, a development of diversification risk system targeted to destruction of structure, by taking disaster as am example, is made an attemp. Those works will make it possible to develop both structures which are hard to be deteriorated by sodium, and well-designed structure management system.Some important achievements, which could contribute to a development of road management system, have been made in this study by assuming usage of antifreezing admixture. However, a development of comprehensive management system comprised of technologies mentioned above are intended for in the first stage, only indication on the direction toward the comprehensive system is made against our objectives. Some examinations on what kinds of effects are botained by organizing the technologies dealt with in the present study will be made in the fixture. Less