Vibration-based Structural Health Monitoring for Bridges using Laser Doppler Vibrometers and MEMS-based Technologies
Vibration-based Structural Health Monitoring for Bridges using Laser Doppler Vibrometers and MEMS-based Technologies
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发表时间：
2009
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通讯作者：
T. Miyashita;M. Nagai
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作者：
T. Miyashita;M. Nagai
本文介绍了与现有桥梁基于振动的结构健康监测 (SHM) 技术开发相关的几项研究。论文前半部分报道了以实现桥梁非接触式远程测量为目的，采用激光多普勒测振仪（LDV）的结构健康监测技术；首先，开发了紧凑型便携式LDV测量系统，并将其应用于斜拉桥拉索拉力测量。接下来开发了LDV与全站仪相结合的系统，用于整个大桥的自动化遥测。论文后半部分报道了基于MEMS（微机电系统）技术的SHM技术，有望实现巨大而密集的结构传感器网络；评估了一种基于MEMS技术的新型无线局域网加速度计，并将其应用于桥梁的现场测量。
This paper describes several studies relating to the development of vibration-based Structural Health Monitoring (SHM) techniques for existing bridges. In the first half of the paper, for the purpose of realizing non-contact and remote measurement of bridges, SHM techniques using laser Doppler vibrometer (LDV) are reported; Firstly, compact and portable LDV measurement system was developed and applied to tensile force measurement of cables in a cable-stayed bridge. Next the system combining LDV with Total Station was developed for automated remote measurement of whole large bridge. In the latter half of the paper, SHM techniques using MEMS (Micro Electro Mechanical System) based technologies, which are expected to realize huge and dense sensor network for structures, are reported; A new wireless LAN accelerometer based on MEMS technology was evaluated and applied to field measurement of bridges.