Analytical Investigation of Progressive Collapse Resistance Mechanism in Steel Moment Frame with Fiber Model

Abstract:

In order to investigate the resistance mechanism of steel frame structure in progressive collapse, an advanced finite element model(FEM) is presented based on fiber beam-column element. Using this FEM, non-linear static pushdown analysis of a ten-story structure was carried out by the alternate load path method, in the two cases that two different columns are removed respectively. Analytical results show that residual structure has the different resistance mechanism for the different column removal case. In the initial stage, bending resistance mechanism can provide dominate resistance capacity in the structural progressive collapse, after both middle and side columns are removed. However, when the bending resistance is out of work, the catenary action is induced in the case of the middle column removal only, which is not developed after the side column is removed. It can be seen that steel frame structure has higher collapse risk in the case of the side column removal than in the case of the middle column removal.

• Periodical: Applied Mechanics and Materials (Volumes 166-169)
• Pages: 1848-1853
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.166-169.1848
• Online since: May 2012
• Authors: Chuan Qing Liu, Zuo Yun Mei
• Keywords: Alternative Load Path Method, Catenary Action, Fiber Model, Progressive Collapse

References

[1] B. Ellingwood and E.V. Leyendecker: ASCE J Struct Div Vol.104(1978), p.413

[2] L.C Ho: J. Constr. Steel Res Vol. 65(2009), p.1130

[3] S. Mehrdad: Struct. Design Tall Spec. Build Vol. 17(2008), p.757

[4] K. Kapil: J. Constr. Steel Res Vol. 65(2009), p.699

[5] B.S Wook: Thin-Walled Struct Vol.46(2008), p.706

[6] M. Shalva: J. Perform. Constr. Facil Vol. 20(2006), p.365

[7] S. Mehrdad: Eng. Struct Vol. 30(2008), p.2478

[8] U.S General Services Administration: Progressive collapse analysis and design guidelines for new federal office buildings and major modernization projects (Washington D.C 2003).

[9] Department of Defense: Design of Structures to Resist Progressive Collapse (Washington D.C 2005).