Vibration Test and Stochastic Analysis of Large-Span Cantilevered Floor

Abstract:

With the study of the 3rd conference hall of Dalian International Conference Center, test and relevant calculation are applied to the structural natural frequency and floor vibration due to human excitations. The Monte Carlo stochastic analysis is applied to the cases in which the comfort for vibration due to crowd excitations may exceed the limit. The results show that the Monte Carlo stochastic method and load curves of excitations are reliable, but in the actual test the high-order harmonic effect of walking excitation is not obvious. In the stochastic analysis with the closer frequency and phase of crowd excitations or the greater population density, the discreteness of results is smaller. Compared with the population density, the differences of frequency and phase of crowd excitations lead to a bigger discreteness of results. With the bigger discreteness of frequency and phase of excitations, the peak accelerations of stochastic model are significantly smaller than the simplified model with the same frequency and phase.

• Periodical: Applied Mechanics and Materials (Volume 188)
• Pages: 130-136
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.188.130
• Online since: June 2012
• Authors: Qing Lin Zuo, Li Chang Wang, Da Hai Ji
• Keywords: Large-Span Cantilevered Floor, Monte-Carlo Method (MC-Method), Stochastic Vibration Analysis, Vibration Test

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