Živanović, Stana and Pavić, Aleksandar (2009) Probabilistic modeling of walking excitation for building floors. Journal of Performance of Constructed Facilities, Vol.23 (No.3). pp. 132-143. doi:10.1061/(ASCE)CF.1943-5509.0000005

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Abstract

Slender floor structures are becoming increasingly prone to excessive vibration due to human-induced walking excitation. To prevent discomfort of floor occupants and/or malfunctioning of sensitive equipment, it is necessary to have a reliable means of estimating floor vibration in the design phase. For accurate estimation of the floor vibration, both reliable excitation and structural models are required. This paper concentrates on the former by evaluating the performance of the existing force models and suggesting their improvement. For this a force model adopted in the United Kingdom by the Concrete Society was applied to four nominally identical floors using their experimentally identified modal properties. After comparison with experimental data the drawbacks of the force model were identified after which an improved model of the walking-induced dynamic force, based on the combination of two existing methodologies used separately for low- and high-frequency floors, is proposed. The improved model accounts for the intersubject variability in the walking force with respect to the pacing frequency, step length, and forcing magnitude. Moreover, it includes all relevant frequency components of the walking force into analysis, removing the need for classification of floors as low or high frequency. The proposed approach should help designers and building owners to make more informed decisions when evaluating vibration serviceability of floor structures.

Item Type:	Journal Article
Subjects:	T Technology > TH Building construction T Technology > TA Engineering (General). Civil engineering (General)
Divisions:	Faculty of Science > Engineering
Library of Congress Subject Headings (LCSH):	Floors -- Vibration -- Mathematical models, Probabilities, Maintainability (Engineering), Vibration -- Physiological effect, Human engineering
Journal or Publication Title:	Journal of Performance of Constructed Facilities
Publisher:	American Society of Civil Engineers
ISSN:	0887-3828
Official Date:	May 2009
Dates:	Date Event May 2009 Published
Volume:	Vol.23
Number:	No.3
Number of Pages:	12
Page Range:	pp. 132-143
DOI:	10.1061/(ASCE)CF.1943-5509.0000005
Status:	Peer Reviewed
Publication Status:	Published
Access rights to Published version:	Restricted or Subscription Access
Funder:	Engineering and Physical Sciences Research Council (EPSRC)
Grant number:	GR/S14924/01 (EPSRC), GR/T03000/01 (EPSRC)

Data sourced from Thomson Reuters' Web of Knowledge

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