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Wireless Laser Range Finder System for Vertical Displacement Monitoring of Mega-Trusses during Construction
Department of Architectural Engineering, Yonsei University, 134 Shinchon-dong, Seoul 110-732, Korea
Center for Structural Health Care Technology in Buildings, Yonsei University, 134 Shinchon-dong, Seoul 110-732, Korea
* Author to whom correspondence should be addressed.
Received: 7 March 2013; in revised form: 18 April 2013 / Accepted: 27 April 2013 / Published: 6 May 2013
Abstract: As buildings become increasingly complex, construction monitoring using various sensors is urgently needed for both more systematic and accurate safety management and high-quality productivity in construction. In this study, a monitoring system that is composed of a laser displacement sensor (LDS) and a wireless sensor node was proposed and applied to an irregular building under construction. The subject building consists of large cross-sectional members, such as mega-columns, mega-trusses, and edge truss, which secured the large spaces. The mega-trusses and edge truss that support this large space are of the cantilever type. The vertical displacement occurring at the free end of these members was directly measured using an LDS. To validate the accuracy and reliability of the deflection data measured from the LDS, a total station was also employed as a sensor for comparison with the LDS. In addition, the numerical simulation result was compared with the deflection obtained from the LDS and total station. Based on these investigations, the proposed wireless displacement monitoring system was able to improve the construction quality by monitoring the real-time behavior of the structure, and the applicability of the proposed system to buildings under construction for the evaluation of structural safety was confirmed.
Keywords: laser displacement sensor; structural health monitoring; displacement measurement; irregular building; mega-truss; in-construction monitoring
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MDPI and ACS Style
Park, H.S.; Son, S.; Choi, S.W.; Kim, Y. Wireless Laser Range Finder System for Vertical Displacement Monitoring of Mega-Trusses during Construction. Sensors 2013, 13, 5796-5813.
Park HS, Son S, Choi SW, Kim Y. Wireless Laser Range Finder System for Vertical Displacement Monitoring of Mega-Trusses during Construction. Sensors. 2013; 13(5):5796-5813.
Park, Hyo S.; Son, Sewook; Choi, Se W.; Kim, Yousok. 2013. "Wireless Laser Range Finder System for Vertical Displacement Monitoring of Mega-Trusses during Construction." Sensors 13, no. 5: 5796-5813.