Effects of Braces on Progressive Collapse Resistance of Steel Frame

Abstract:

In order to carry on the progressive collapse analysis more properly, nonlinear-dynamic analysis method is used to analyze five-storey of steel frame structure. Four structure schemes have been established, namely frames, frames with horizontal braces, frames with vertical braces and frames with horizontal cross braces. According to analyzing with different position of failure column on the first floor, the curves of displacement-time of column failure point and axial force of failure column’s neighboring are obtained. The results indicate that horizontal braces can reduce the vertical displacement above damaged column and the axial force of the columns on the first floor evidently. The vertical displacement of horizontal cross braces is less than which of horizontal braces.

• Periodical: Applied Mechanics and Materials (Volumes 578-579)
• Pages: 369-373
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.578-579.369
• Online since: July 2014
• Authors: Li Chang Dong*, Lai Wang
• Keywords: Braces, Dynamic Nonlinear Analysis, Progressive Collapse, Steel Frame Structure

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DOI: 10.1007/s12209-008-0056-0