| Summary: | 碩士 === 國立臺灣大學 === 土木工程學研究所 === 106 === Scaffolds are the most commonly used equipment in construction projects. During a construction process of maintaining the structures, all of them need the scaffolds. However, many reasons cause the safety and quality difficulty control, such as the quantity of the scaffold is numerous on the construction site and the scaffolds are installed by worker’s experience. Since it is difficult to maintain the quality of the scaffold and replace the defect scaffold on-time, scaffold disaster frequently happens every year.
In order to reduce the construction cost of the safety monitoring system that protect the workers in a construction site to raise the willingness of the owners and constructors to adopt, the ultimate target of the research is finding the necessary position for monitoring and combination with the wireless sensing network developed by the predecessors, an immediate multi-project early-warning system and equipment are applied to prevent construction rack disasters.
The main controlling failure mode of the scaffold system is the single steel tube at the first story caused by buckling failure. The most beginning failure happens at the position of middle steel column at the bottom story. The research recommends that the column should be monitored and measured its lateral displacement on the top of the column and the angle of rotation on the bottom of the column. Besides, considering the different directions of the wind and the seismic force, the research also recommends the central columns of STORYMAX and STORYMAX-1 should be monitored by the monitoring system.
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