Structural health monitoring system of a cable-stayed bridge using a dense array of scalable smart sensor network

Soojin Cho, Shin Ae Jang, Hongki Jo, Kirill Mechitov, Jennifer A. Rice, Hyung Jo Jung, Chung Bang Yun, Billie F. Spencer, Tomonori Nagayama, Juwon Seo

Research output: Chapter in Book/Report/Conference proceedingConference contribution

10 Scopus citations

Abstract

This paper presents a structural health monitoring (SHM) system using a dense array of scalable smart wireless sensor network on a cable-stayed bridge (Jindo Bridge) in Korea. The hardware and software for the SHM system and its components are developed for low-cost, efficient, and autonomous monitoring of the bridge. 70 sensors and two base station computers have been deployed to monitor the bridge using an autonomous SHM application with consideration of harsh outdoor surroundings. The performance of the system has been evaluated in terms of hardware durability, software reliability, and power consumption. 3-D modal properties were extracted from the measured 3-axis vibration data using output-only modal identification methods. Tension forces of 4 different lengths of stay-cables were derived from the ambient vibration data on the cables. For the integrity assessment of the structure, multi-scale subspace system identification method is now under development using a neural network technique based on the local mode shapes and the cable tensions.

Original languageEnglish (US)
Title of host publicationSensors and Smart Structures Technologies for Civil, Mechanical, and Aerospace Systems 2010
DOIs
StatePublished - Jun 18 2010
Externally publishedYes
EventSensors and Smart Structures Technologies for Civil, Mechanical, and Aerospace Systems 2010 - San Diego, CA, United States
Duration: Mar 8 2010Mar 11 2010

Publication series

NameProceedings of SPIE - The International Society for Optical Engineering
Volume7647
ISSN (Print)0277-786X

Other

OtherSensors and Smart Structures Technologies for Civil, Mechanical, and Aerospace Systems 2010
CountryUnited States
CitySan Diego, CA
Period3/8/103/11/10

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Keywords

  • Cable-stayed bridge
  • Smart sensor
  • Structural health monitoring
  • Test-bed
  • Wireless sensor network

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Computer Science Applications
  • Applied Mathematics
  • Electrical and Electronic Engineering

Cite this

Cho, S., Jang, S. A., Jo, H., Mechitov, K., Rice, J. A., Jung, H. J., Yun, C. B., Spencer, B. F., Nagayama, T., & Seo, J. (2010). Structural health monitoring system of a cable-stayed bridge using a dense array of scalable smart sensor network. In Sensors and Smart Structures Technologies for Civil, Mechanical, and Aerospace Systems 2010 [764707] (Proceedings of SPIE - The International Society for Optical Engineering; Vol. 7647). https://doi.org/10.1117/12.852272