Progressive collapse is defined as the expansion of local failure which damages the entire structure or a big part of it. The failure created is very widespread compared with the initial event. The effect of debris, which is normally produced during a progressive collapse, has not been studied yet sufficiently. Despite, it is very important in the progressive collapse, based on experimental accidents. In this paper, the response of a building structure is investigated to consider the influence of separation of debris from one story and falling on the bottom floor. Nonlinear dynamic analyses have been performed on a four-story, four-span steel frame. A sensitivity analysis on the debris amount and its detachment time is carried out by OpenSEES. The obtained results indicate that the greater amount of debris leads to more intensive progressive collapse. In the case of detachment time, the most damaging effect occurs if debris is separated at the same moment when the top point of the removed column experiences its most vertical displacement. Debris amplifies the maximum and residual displacement of the top point of the deleted column up to 3.65 and 4 times, respectively. This shows that debris has a considerable effect and cannot be ignored in progressive collapse analyses.
Fu, F. (2009) Progressive collapse analysis of high-rise building with 3-D finite element modeling method. Journal of Constructional Steel Research, 65(6), 1269-1278.
Khandelwal, K. (2008) Multi-Scale Computational Simulation of Progressive Collapse of Steel Frames.
Marjanishvili, S. and Agnew, E. (2006) Comparison of various procedures for progressive collapse analysis. Journal of Performance of Constructed Facilities, 20(4), 365-374.
Marjanishvili, S. (2004) Progressive analysis procedure for progressive collapse. Journal of Performance of Constructed Facilities, 18(2), 79-85.
Kim, J. and Kim T. (2009) Assessment of progressive collapse-resisting capacity of steel moment frames. Journal of Constructional Steel Research, 65(1), 169-179.
Kim, T. and Kim J. (2009) Collapse analysis of steel moment frames with various seismic connections. Journal of Constructional Steel Research, 65(6), 1316-1322.
Institute, P.-T. (1985) Post-Tensioning Manual. Post-Tensioning Institute.
Amman, O.H., von Kármán, T. and Woodruff, G.B. (1941) The failure of the Tacoma Narrows bridge.
Starossek, U. (2007) Typology of progressive collapse. Engineering Structures, 29(9), 2302-2307.
Khandelwal, K., El-Tawil, S. and Sadek, F. (2009) Progressive collapse analysis of seismically designed steel braced frames. Journal of Constructional Steel Research, 65(3), 699-708.
Smith, J.W. (2006) Structural robustness analysis and the fast fracture analogy. Structural Engineering International, 16(2), 118-123.
Karns, J.E., Houghton, D.L., Hong, J.-K. and Kim, J. (2009) Behavior of varied steel frame connection types subjected to air blast, debris impact, and/or post-blast progressive collapse load conditions. Structures Congress 2009: Don't Mess with Structural Engineers: Expanding Our Role.
Ellingwood, B.R. (2006) Mitigating risk from abnormal loads and progressive collapse. Journal of Performance of Constructed Facilities, 20(4), 315-323.
Rezvani, F.H., Yousefi, A.M. and Ronagh, H.R. (2015) Effect of span length on progressive collapse behaviour of steel moment resisting frames. Structures, Elsevier.
Kordbagh, B. and Mohammadi, M. (2017) Influence of seismicity level and height of the building on progressive collapse resistance of steel frames. The Structural Design of Tall and Special Buildings, 26(2), e1305.
Chopra, A. (1995) Dynamics of Structures. Vol. 3, Prentice Hall, New Jersey.
Mohammadi, M., Nasirzadeh, N., & Kordbagh, B. (2020). Influence of Debris Impact on Progressive Collapse of a Steel Structure Building. Journal of Seismology and Earthquake Engineering, 22(3), 59-71. doi: 10.48303/jsee.2020.248311
MLA
Majid Mohammadi; Nima Nasirzadeh; Bahram Kordbagh. "Influence of Debris Impact on Progressive Collapse of a Steel Structure Building". Journal of Seismology and Earthquake Engineering, 22, 3, 2020, 59-71. doi: 10.48303/jsee.2020.248311
HARVARD
Mohammadi, M., Nasirzadeh, N., Kordbagh, B. (2020). 'Influence of Debris Impact on Progressive Collapse of a Steel Structure Building', Journal of Seismology and Earthquake Engineering, 22(3), pp. 59-71. doi: 10.48303/jsee.2020.248311
VANCOUVER
Mohammadi, M., Nasirzadeh, N., Kordbagh, B. Influence of Debris Impact on Progressive Collapse of a Steel Structure Building. Journal of Seismology and Earthquake Engineering, 2020; 22(3): 59-71. doi: 10.48303/jsee.2020.248311
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