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Clarification of Pathological Environment-Factor and Remote Diagnosis for Aging Bridge Structure

老化桥梁结构病理环境因素的明确与远程诊断

基本信息

批准号：
18360220
负责人：
OKABAYASHI Takatoshi
金额：
$ 9.51万
依托单位：
Nagasaki University
依托单位国家：
日本
项目类别：
Grant-in-Aid for Scientific Research (B)
财政年份：
2006
资助国家：
日本
起止时间：
2006 至 2007
项目状态：
已结题

来源：
https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-18360220/
关键词：
Maintenance and Management Bridge Structure Remote Monitorin Environmental Measurement Corrosion 腐食

项目摘要

This research aimed for establishment of bridge environment and health monitoring system which consists of form inside / outside bridge diagnosis function. The developed system was installed to existing bridges in Nagasaki prefecture and bridge environment monitoring was held during the final research year. Remote monitoring based on the high accurate structural identification method was executed for real bridges and the obtained data was analyzed for evaluation of the bridge's health condition. On the other hand, the condition of bridge corrosion was investigated for island's bridges. The following are the summery of the research results.1)Development of bridge diagnosis system : Bridge remote monitoring system was developed for investigating bridge micro environment, salt environmental condition, and bridge dynamic behavior. Also, high accurate dynamic characteristics estimation with realization theories has established and applied to existing bridge for evaluation of the total system.2)Observation of bridge micro environment : The developed bridge micro environment monitoring system was installed to existing bridges for investigating environmental changes with remarkable season's changes. From obtained data, the bridge's environmental conditions were analyzed.3)Clarification of bridge corrosion environment : Salt adhesion condition to bridge surface was investigated and the factors were clarified for steel bridge in Nagasaki prefectureWritten in above, long term bridge monitoring system for structure and micro environment was established. Furthermore, bridge image and information database for maintenance and management was developed by using database engine with My SQL and PHP.By this research, fundamental structure for establishing bridge diagnosis system was established for not only domestic use but also overseas area, especially for East Asia region, which are exposed to severe environments.

本研究旨在建立具有桥梁内外诊断功能的桥梁环境与健康监测系统。开发的系统安装在长崎县的现有桥梁上，并在最后研究年进行了桥梁环境监测。对真实桥梁进行基于高精度结构识别方法的远程监测，并对获得的数据进行分析，以评估桥梁的健康状况。另一方面，对海岛桥梁的腐蚀情况进行了调查。主要研究成果如下：1)桥梁诊断系统开发：开发了桥梁远程监测系统，用于研究桥梁微环境、盐分环境状况以及桥梁动力行为。此外，还建立了具有实现理论的高精度动态特性估计，并将其应用于现有桥梁，以对整个系统进行评估。2）桥梁微环境观测：将开发的桥梁微环境监测系统安装到现有桥梁上，以调查季节变化显着的环境变化。根据获得的数据，对桥梁的环境条件进行了分析。3）桥梁腐蚀环境的澄清：对长崎县的钢桥进行了盐类附着情况的调查，明确了影响因素。建立了桥梁结构和微环境的长期监测系统。此外，利用My SQL和PHP数据库引擎开发了用于维护和管理的桥梁图像和信息数据库。通过本研究，建立了建立桥梁诊断系统的基本结构，不仅适用于国内，而且适用于海外地区，特别是环境恶劣的东亚地区。