Dynamic Characteristic Analysis of Prefabricated Houses of Light-Weight Steel Structure

Abstract:

Prefabricated house is a new kind of temporary structure. It has the advantages of extensibility and diversity, and it is also easy to assemble and disassemble. This paper performed the dynamic characteristic test of 4 prefabricated houses of light-weight steel structure on the site by using SVSA, and got the natural frequencies, damping ratios and vibrational modes of these structures. To study the effects of infill walls to the dynamic characteristic of structures, two different modes were built. By comparing the results of numerical evaluation and actual data, the paper analyzed the dynamic characteristic of prefabricated houses of light-weight steel structure. Analysis suggests that the vibrational modes of prefabricated houses of light-weight steel structure are in shear shape, and the damping ratios are between 0.6% and 2%. The infill walls and the pull rods between columns can shorten the natural period of structures, so the computation period should be reduced in the aseismatic design.

• Periodical: Applied Mechanics and Materials (Volumes 578-579)
• Pages: 483-487
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.578-579.483
• Online since: July 2014
• Authors: Hui Min Xu*, Yang Yang Li, Wei Xu
• Keywords: Ambient Excitation, Natural Vibration Period, Prefabricated House of Light-Weight Steel Structure, Pulse Method

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