The Wind-Induced Vibration Response for Tower Crane Based on Virtual Excitation Method

Hongqi Jiang*, Shuncai Li
School of Mechanical & Electrical Engineering, Jiangsu Normal University, Xuzhou, Jiangsu, 221116, P.R. China

© 2014 Jiang and Li

open-access license: This is an open access article distributed under the terms of the Creative Commons Attribution 4.0 International Public License (CC-BY 4.0), a copy of which is available at: ( This license permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.

* Address correspondence to this author at the 101 Shanghai road tongshan, Xuzhou, Jiangsu, 221116, P.R. China; Tel: +8613852482932; Fax: +86- 516-83500251; E-mail:


The dynamics of Tower Crane is complicated by wind excitation which complicates the wind-induced vibration response analysis. The random wind-induced response analysis of tower crane is presented based on finite element method and virtual excitation method. The pulsating wind loads change into multiple-point correlation stationary excitation. This paper uses Davenport’s wind speed spectrum which does not change with height, and considers multiplepoint correlation of wind-induction. The tower crane was employed as a numerical example; the response spectra and Mean Square Root (RMS) of the tower crane were obtained by wind-induced vibration. The results indicate that the vibration of the tower crane showed a greater response in low frequency with the One-third Octave acceleration RMS being lower. Finally, the influences of the wind-induced vibration on comfort were analyzed.

Keywords: Tower Crane, Wind-induced response, Virtual excitation method, Pseudo-Excitation.