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Steel and Composite Structures Volume 16, Number 2, February 2014 , pages 117-133 DOI: https://doi.org/10.12989/scs.2014.16.2.117 |
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Analysis of dynamic behavior for truss cable structures |
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Wen-Fu Zhang, Ying-Chun Liu, Jing Ji and Zhen-Chao Teng
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| Abstract | ||
| Natural vibration of truss cable structures is analyzed based upon the general structural analysis software ANSYS, energy variational method and Rayleigh method, the calculated results of three methods are compared, from which the characteristics of free-vibration are obtained. Moreover, vertical seismic response analysis of truss cable structures is carried out via time-history method. Introducing three natural earthquake waves calculated the results including time-history curve of vertical maximal displacement, time-history curve of maximal internal force. Variation curve of maximal displacement of node along span, and variation curve of maximal internal force of member along span are presented. The results show the formulas of frequencies for truss cable structures obtained by energy variational method are of high accuracy. Furthermore, the maximal displacement and the maximal internal force occur near the 1/5 span point. These provide convenient and simple design method for practical engineering. | ||
| Key Words | ||
| truss cable structures; energy variational method; natural vibration; time-history analysis; finite element analysis | ||
| Address | ||
| Wen-Fu Zhang, Ying-Chun Liu, Jing Ji and Zhen-Chao Teng: Heilongjiang Key Laboratory of Disaster Prevention, Mitigation and Protection Engineering, College of Civil and Architecture Engineering, Northeast Petroleum University, Daqing 163318, P.R. China. | ||