Evaluation of floor vibration caused by human walking in a large glulam beam and deck floor

Abstract

Discussion addresses the vibration responses of a large glued-laminated-timber (glulam) beam-and-deck system subjected to office floor loadings. Ambient Vibration Test (AVT) was carried out before floor topping layers were added, and after occupation of the building. Addition of topping layers, and presence of office workers and furniture strongly influenced the fundamental frequency and damping of the system. Detailed Finite Element (FE) models were created. It was found that only FE analyses that exceed ‘typical’ design approach would provide an accurate model. Controlled walking tests associated with normal office activities were conducted. Those indicated the particular floor, and possibly other large glulam beam-and-deck floors with concrete topping, is not prone to low level vibration serviceability problems.