Experimental investigations and numerical simulations of the vibrational performance of composite timber-lightweight concrete floor structures

Kozarić, Ljiljana; Varju, Đerđ; Purčar, Martina Vojnić; Bursać, Smilja; Čeh, Arpad

doi:10.1016/j.engstruct.2022.114908

Cited by 7 publications

(1 citation statement)

References 13 publications

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“…Slender long-span floors are more vulnerable to vibrations caused by various human activities, which may adversely affect occupant comfort [2]. Proper estimation and control of floor vibrations during the design stage is essential because rectification of the floor subject to excessive vibration after completion of construction could be costly and annoying [3][4][5]. Supriyadi found that the maximum vertical displacement of an auditorium floor doubled as a result of a group of persons dancing in unison in response to live music [6].…”

Section: Introductionmentioning

confidence: 99%

Vibration Performance of Flat Plate Concrete Floors With Codified Minimum Thickness

Nguyen¹

2022

GEOMATE

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Limiting vibrations to ensure occupant comfort is a serviceability requirement that should be considered in the design of floor systems. Current concrete design codes do not explicitly address the issue of vibrations when providing guidelines for calculation of the slab thickness of a flat plate floor. Concrete codes have introduced several methods of determination of the slab thickness or span-to-thickness ratio on the basis of deflection control. The objective of this article is to investigate to what extent a flat plate floor with codified minimum thickness would meet the requirement for walking-induced vibration control. The modal properties of flat plate floors spanning 6-9 m were determined and the 90th percentile velocity response to walking excitation was calculated using probability-based design charts developed by a European guideline on floor vibrations. For deflection control, on average the floor designed following the European concrete code was 6% thinner than the floor designed using the American concrete code and 34% thinner than the floor designed according to the Australian concrete code. It was interestingly found that the vibration of a floor that was dimensioned for deflection control as per any of the three concrete design codes well met the acceptance criteria for human comfort in office buildings, residential buildings, hotels and schools. In addition, the vibration of a 9-m-span floor whose slab thickness was determined using the Australian concrete code provisions could even be acceptable for critical areas.

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