A practical monitoring system for the structural safety of mega-trusses using wireless vibrating wire strain gauges

Hyo Seon Park, Hwan Young Lee, Se Woon Choi, Yousok Kim

Research output: Contribution to journalArticle

10 Citations (Scopus)

Abstract

Sensor technologies have been actively employed in structural health monitoring (SHM) to evaluate structural safety. To provide stable and real-time monitoring, a practical wireless sensor network system (WSNS) based on vibrating wire strain gauges (VWSGs) is proposed and applied to a building under construction. In this WSNS, the data measured from each VWSG are transmitted to the sensor node via a signal line and then transmitted to the master node through a short-range wireless communication module (operating on the Industrial, Scientific, and Medical (ISM) band). The master node also employs a long-range wireless communication module (Code Division Multiple Access-CDMA) to transmit the received data from the sensor node to a server located in a remote area, which enables a manager to examine the measured data in real time without any time or location restrictions. In this study, a total of 48 VWSGs, 14 sensor nodes, and seven master nodes were implemented to measure long-term strain variations of mega-trusses in an irregular large-scale building under construction. Based on strain data collected over a 16-month period, a quantitative evaluation of the construction process was performed to determine the aspects that exhibit the greatest influence on member behavior and to conduct a comparison with numerical simulation results. The effect of temperature stress on the structural elements was also analyzed. From these observations, the feasibility of a long-term WSNS based on VWSGs to evaluate the structural safety of an irregular building under construction was confirmed.

Original languageEnglish
Pages (from-to)17346-17361
Number of pages16
JournalSensors (Switzerland)
Volume13
Issue number12
DOIs
Publication statusPublished - 2013 Dec 16

Fingerprint

Trusses
trusses
strain gages
Strain gages
safety
Sensor nodes
wire
Wire
Safety
Wireless sensor networks
Monitoring
sensors
Code division multiple access
code division multiple access
wireless communication
Structural health monitoring
Communication
Technology
modules
Temperature

All Science Journal Classification (ASJC) codes

  • Analytical Chemistry
  • Atomic and Molecular Physics, and Optics
  • Biochemistry
  • Instrumentation
  • Electrical and Electronic Engineering

Cite this

Park, Hyo Seon ; Lee, Hwan Young ; Choi, Se Woon ; Kim, Yousok. / A practical monitoring system for the structural safety of mega-trusses using wireless vibrating wire strain gauges. In: Sensors (Switzerland). 2013 ; Vol. 13, No. 12. pp. 17346-17361.
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A practical monitoring system for the structural safety of mega-trusses using wireless vibrating wire strain gauges. / Park, Hyo Seon; Lee, Hwan Young; Choi, Se Woon; Kim, Yousok.

In: Sensors (Switzerland), Vol. 13, No. 12, 16.12.2013, p. 17346-17361.

Research output: Contribution to journalArticle

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