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Evaluation of Reliability for Road Network Considering Failure of Urban Facilities, and Its Strategy for Strengthening and Restoration

考虑城市设施失效的路网可靠性评价及加固修复策略

基本信息

批准号：
01550364
负责人：
KITAURA Masaru
金额：
$ 1.34万
依托单位：
Kanazawa University
依托单位国家：
日本
项目类别：
Grant-in-Aid for General Scientific Research (C)
财政年份：
1989
资助国家：
日本
起止时间：
1989 至 1990
项目状态：
已结题

来源：
https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-01550364/
关键词：
Road network Reliability Prediction of damage Restoration Importance scale Strength Urban facilities

项目摘要

The results obtained in the study are summarized below :1. A simplified method is proposed for predicting probable liquefaction-induced settlements in saturated sand deposits during earthquake. Comparison of the calculated settlements using these equations with actual field observations during previous earthquake in Japan indicates that the proposed method can be useful in assessing the potential damage which may be expected at any given site during earthquakes.2. The system based on VISMS is applied to Izu road network after the past earthquake. It seems that the system gives an optimum information of restoration for the damaged road network.3. We presented new soft systems approach to the urgency road network improvement planning based on the index during earthquake. The soft system could activate human intuitive judgment to evaluate serviceability of component roads by supporting system called VISMS.4. The conventional calculation method of road network reliability using Boolean Algebra is impractical for large system because the path sets and cut sets include a large number of elements. Two approximate calculation methods which evaluate road network reliability and presented. The approximate methods are applied to small size networks in order to compare with the conventional method.5. Collapse of bridge due to earthquake have great influence on restoration time of the damaged road network. We present a new restoration sulloring system for brides using Expert Systems (Daisougen Presented by A. I. Co. Ltd.).

研究结果如下：1.本文提出了一种预测饱和砂土地基在地震作用下可能产生的沉降的简化方法。利用这些方程计算的沉降与日本地震期间的实际现场观测结果的比较表明，所提出的方法可以用于评估地震期间任何给定场地可能发生的潜在破坏。基于VISMS的系统应用于伊豆地震后的道路网络。该系统为受损路网的恢复提供了最优的信息.提出了基于该指标的地震应急路网改善规划的软系统方法。该软件系统通过VISMS支持系统，激活人的直觉判断，对组成道路的使用性能进行评价.传统的路网可靠度计算方法是用布尔代数计算路网可靠度，但由于路网中的路集和割集包含大量的元素，对于大系统而言，这种方法是不实用的。提出了评价路网可靠性的两种近似计算方法.将近似方法应用于小规模网络，并与传统方法进行比较.桥梁地震倒塌对受损路网的恢复时间有很大影响。我们提出了一个新的修复sulloring系统的新娘使用专家系统（Daisougen提出的A。I.有限公司）。