Displacement Monitoring Requirements and Laser Displacement Monitoring Technology of Bridges with Short and Medium Spans
Source abstract
Abstract
Short and medium-span bridges account for more than 90% of the bridges in China, and it is not suitable to use conventional health monitoring technology to monitor them. Based on an analysis of the proportion of live load, displacement under load, the action time of live load and other factors affecting short and medium-span bridges, this paper determines a feasible technical solution using mid-span deflection to monitor bridges with requirements including measuring range, resolution and accuracy. A set of wireless laser displacement monitoring technologies and equipment is studied by using the phase laser ranging method and the principle of pulsed laser ranging, and the reliability of the data is verified by experimental tests. Using both practical application cases and economic analysis, this paper proves that the technology has significant application advantages for short and medium-span bridges.
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Research context
OpenAlex topics: Structural Health Monitoring Techniques · Advanced Fiber Optic Sensors · Optical measurement and interference techniques
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
Affiliations
Key Laboratory of Road and Bridge Detection and Maintenance Technology of Zhejiang Province, Hangzhou 311305, China
Zhejiang Scientific Research Institute of Transport, Hangzhou 310023, China
Department of Bridge Engineering, College of Civil Engineering, Tongji University, Shanghai 200092, China
Funding
Key Research and Development Program of Zhejiang Province · Project of Science and Technology Program of Department of Transport, Zhejiang Province
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