title: An integrative structural health monitoring system for the local/global responses of a large-scale irregular building under construction.
abstract: In this study, a practical and integrative SHM system was developed and applied to a large-scale irregular building under construction, where many challenging issues exist. In the proposed sensor network, customized energy-efficient wireless sensing units (sensor nodes, repeater nodes, and master nodes) were employed and comprehensive communications from the sensor node to the remote monitoring server were conducted through wireless communications. The long-term (13-month) monitoring results recorded from a large number of sensors (75 vibrating wire strain gauges, 10 inclinometers, and three laser displacement sensors) indicated that the construction event exhibiting the largest influence on structural behavior was the removal of bents that were temporarily installed to support the free end of the cantilevered members during their construction. The safety of each member could be confirmed based on the quantitative evaluation of each response. Furthermore, it was also confirmed that the relation between these responses (i.e., deflection, strain, and inclination) can provide information about the global behavior of structures induced from specific events. Analysis of the measurement results demonstrates the proposed sensor network system is capable of automatic and real-time monitoring and can be applied and utilized for both the safety evaluation and precise implementation of buildings under construction.
authors.affiliation: Department of Architectural Engineering, Yonsei University, Seoul, Korea. hspark@yonsei.ac.kr
authors.forename: Hyo Seon
authors.initials: HS
authors.lastname: Park
authors.forename: Yunah
authors.initials: Y
authors.lastname: Shin
authors.forename: Se Woon
authors.initials: SW
authors.lastname: Choi
authors.forename: Yousok
authors.initials: Y
authors.lastname: Kim
mesh_terms: D001108:Architecture / Q000295:instrumentation* / Q000379:methods*; D003195:Computer Communication Networks / Q000295:instrumentation*; D003252:Construction Materials / Q000032:analysis*; D004784:Environmental Monitoring / Q000295:instrumentation* / Q000379:methods*; D004867:Equipment Design; D019544:Equipment Failure Analysis; D018511:Systems Integration; D014159:Transducers; D059015:Wireless Technology / Q000295:instrumentation*