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

分析了防火外加剂的分散性对道路交通功能和道路设施劣化的影响。本研究的目的是为了加强系统的操作和维护，以应对这些影响。首先，对支撑交通运输系统的路网运营维护技术进行了研究。在此基础上，开发了一个基于Web的冬季道路交通状况数据库系统，该系统能够从时间和空间两个方面获取冬季道路交通状况的真实的信息。最后，还研究了考虑乘客乘坐方式变化的防冻剂最优掺量问题。从有效的道路养护和控制由交通网络特性决定的乘客出行行为两方面考虑，这两种技术都将带来防冻剂的有效使用。详细分析了混凝土劣化的机理，并提出了相应的解决方案。 ...更多信息 捕捉到了防冻剂引起的结构。本文对混凝土的主要材料--水泥的抗钠渗透性能进行了试验研究，并提出了新的试验方法。以钢结构为例，对维修优先级决策系统进行了研究。并以灾害为例，建立了以结构破坏为目标的分散风险体系。这些工作将使开发不易被钠腐蚀的结构和设计良好的结构管理系统成为可能。通过假设使用防冻剂，本研究取得了一些重要成果，这可能有助于道路管理系统的开发。然而，在第一阶段，我们打算开发由上述技术组成的综合管理系统，针对我们的目标，只对综合系统的方向进行了指示。在夹具中将对本研究中所涉及的技术组织起来所产生的效果进行一些检验。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