Static and Dynamic Responses of Light Gauge Steel-Ultra-High Performance Fibre-Reinforced Concrete Composite Deck

This paper investigated the static and dynamic responses of an innovative light gauge steel-ultra-high performance concrete composite deck system, which is aimed to be used as a deck component for prefabricated residential building. The static loading was performed using staged weight loading, while the dynamic responses were examined using human-induced loading. The fix location walking and designated path walking scenario were implemented for walking frequency ranging from 1.5 Hz to 2.6 Hz. Measured RMS values and peak acceleration were compared with the design standard criteria. It was concluded that the RMS value is more reasonable measurement indices for checking against the human-induced vibration. The proposed composite deck exhibits a satisfactory vibration level under human-induced vibration with a walking frequency less than 2.2 Hz. At the same time, more procedure shall be implemented to reduce the acceleration under higher walking frequencies.