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摘要:
Largest portion of the bridge stock in almost any country and bridge owning organisation consists on ordinary bridges that has short or medium spans and are now deteriorating due to aging, etc. Therefore, it is becoming an important social concern to develop and put to practical use simple and efficient health monitoring systems for existing short and medium span (10 - 30 m) bridges. In this paper, one practical solution to the problem for condition assessment of short and medium span bridges was discussed. A vehicle-based measurement with a public bus as part of a public transit system (called “Bus monitoring system”) has been developed to be capable of detecting damage that may affect the structural safety of a bridge from long term vibration measurement data collected while the vehicle (bus) crossed the target bridges. This paper systematically describes how the system has been developed. The bus monitoring system aims to detect the transition from the damage acceleration period, in which the structural safety of an aged bridge declines sharply, to the deterioration period by continually monitoring the bridge of interest. To evaluate the practicality of the newly developed bus monitoring system, it has been field-tested over a period of about four years by using an in-service fixed-route bus operating on a bus route in the city of Ube, Yamaguchi Prefecture, Japan. The verification results thus obtained are also described in this paper. This study also evaluates the sensitivity of “characteristic deflection”, which is a bridge (health) condition indicator used by the bus monitoring system, in damage detection. Sensitivity of “characteristic deflection” is verified by introducing artificial damage into a bridge that has ended its service life and is awaiting removal. As the results, it will be able to make a rational long-term health monitoring system for existing short and mediumspan bridges, and then the system helps bridge administrators to establish the rational maintenance strategies.
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篇名 Long Term Application of a Vehicle-Based Health Monitoring System to Short and Medium Span Bridges and Damage Detection Sensitivity
来源期刊 工程(英文)(1947-3931) 学科 医学
关键词 SHORT and MEDIUM SPAN Bridge Long TERM MONITORING Public Bus Health MONITORING System Condition Assessment Damage Detection Characteristic DEFLECTION Sensitivity
年,卷(期) 2017,(2) 所属期刊栏目
研究方向 页码范围 68-122
页数 55页 分类号 R73
字数 语种
DOI
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研究主题发展历程
节点文献
SHORT
and
MEDIUM
SPAN
Bridge
Long
TERM
MONITORING
Public
Bus
Health
MONITORING
System
Condition
Assessment
Damage
Detection
Characteristic
DEFLECTION
Sensitivity
研究起点
研究来源
研究分支
研究去脉
引文网络交叉学科
相关学者/机构
期刊影响力
工程(英文)(1947-3931)
月刊
1947-3931
武汉市江夏区汤逊湖北路38号光谷总部空间
出版文献量(篇)
367
总下载数(次)
1
总被引数(次)
0
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