A Practical Monitoring System for the Structural Safety of Mega-Trusses Using Wireless Vibrating Wire Strain Gauges
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...
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doaj-f09a96e523ea4fc4bb2507febf3bb2a72020-11-25T00:40:32ZengMDPI AGSensors1424-82202013-12-011312173461736110.3390/s131217346s131217346A Practical Monitoring System for the Structural Safety of Mega-Trusses Using Wireless Vibrating Wire Strain GaugesHyo Seon Park0Hwan Young Lee1Se Woon Choi2Yousok Kim3Department of Architectural Engineering, Yonsei University, 134 Shinchon-dong, Seoul 110-732, KoreaDepartment of Architectural Engineering, Yonsei University, 134 Shinchon-dong, Seoul 110-732, KoreaCenter for Structural Health Care Technology in Buildings, Yonsei University, 134 Shinchon-dong, Seoul 110-732, KoreaCenter for Structural Health Care Technology in Buildings, Yonsei University, 134 Shinchon-dong, Seoul 110-732, KoreaSensor 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.http://www.mdpi.com/1424-8220/13/12/17346vibrating wire strain gaugestructural health monitoringwireless networkmega-trusstemperature stresslong-term monitoringirregular building |
collection |
DOAJ |
language |
English |
format |
Article |
sources |
DOAJ |
author |
Hyo Seon Park Hwan Young Lee Se Woon Choi Yousok Kim |
spellingShingle |
Hyo Seon Park Hwan Young Lee Se Woon Choi Yousok Kim A Practical Monitoring System for the Structural Safety of Mega-Trusses Using Wireless Vibrating Wire Strain Gauges Sensors vibrating wire strain gauge structural health monitoring wireless network mega-truss temperature stress long-term monitoring irregular building |
author_facet |
Hyo Seon Park Hwan Young Lee Se Woon Choi Yousok Kim |
author_sort |
Hyo Seon Park |
title |
A Practical Monitoring System for the Structural Safety of Mega-Trusses Using Wireless Vibrating Wire Strain Gauges |
title_short |
A Practical Monitoring System for the Structural Safety of Mega-Trusses Using Wireless Vibrating Wire Strain Gauges |
title_full |
A Practical Monitoring System for the Structural Safety of Mega-Trusses Using Wireless Vibrating Wire Strain Gauges |
title_fullStr |
A Practical Monitoring System for the Structural Safety of Mega-Trusses Using Wireless Vibrating Wire Strain Gauges |
title_full_unstemmed |
A Practical Monitoring System for the Structural Safety of Mega-Trusses Using Wireless Vibrating Wire Strain Gauges |
title_sort |
practical monitoring system for the structural safety of mega-trusses using wireless vibrating wire strain gauges |
publisher |
MDPI AG |
series |
Sensors |
issn |
1424-8220 |
publishDate |
2013-12-01 |
description |
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. |
topic |
vibrating wire strain gauge structural health monitoring wireless network mega-truss temperature stress long-term monitoring irregular building |
url |
http://www.mdpi.com/1424-8220/13/12/17346 |
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