Department of Architectural Engineering, Yonsei University, Seoul, Korea.
Sensors (Basel). 2013 May 6;13(5):5796-813. doi: 10.3390/s130505796.
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.
随着建筑物变得越来越复杂，对于更系统和准确的安全管理以及高质量的施工生产力，使用各种传感器进行施工监测变得迫切需要。在本研究中，提出了一种由激光位移传感器（LDS）和无线传感器节点组成的监测系统，并将其应用于正在施工的不规则建筑物。该建筑物主体由大型截面构件组成，例如巨型柱、巨型桁架和边缘桁架，这些构件确保了大空间的安全。支撑这个大空间的巨型桁架和边缘桁架为悬挑式。这些构件自由端的垂直位移直接使用 LDS 进行测量。为了验证从 LDS 测量的挠度数据的准确性和可靠性，还使用全站仪作为传感器与 LDS 进行比较。此外，还将数值模拟结果与从 LDS 和全站仪获得的挠度进行了比较。基于这些研究，所提出的无线位移监测系统通过监测结构的实时行为提高了施工质量，并确认了所提出的系统在评估结构安全方面对在建建筑物的适用性。
