Vol. 14, No. 3, pp. 377-391(2018)
EFFECT OF BLAST-INDUCED COLUMN FAILURE PATTERN
ON COLLAPSE BEHAVIOR OF STEEL FRAMES
G.Q. Li1,2, Y. Zhang2,3, T.C. Yang4, J. Jiang2,*, Y. Lu5 and S.W. Chen1,2
1 State Key Laboratory for Disaster Reduction in Civil Engineering, Shanghai 200092, China;
2 College of Civil Engineering, Tongji University, Shanghai 200092, China;
3 Department of Building Engineering, Logistics University of PAPF, Tianjin 300309, China;
4 School of Civil Engineering and Architecture, University of Jinan, Jinan 250022, China;
5 School of Engineering, the University of Edinburgh, Edinburgh EH9 3JF, United Kingdom
*(Corresponding author: E-mail:This email address is being protected from spambots. You need JavaScript enabled to view it.)
Received: 11 April 2017; Revised: 11 June 2017; Accepted: 22 July 2017
DOI:10.18057/IJASC.2018.14.3.4
 View Article |
Export Citation: Plain Text | RIS | Endnote |
ABSTRACT
This paper proposes two reduced-order modeling approaches (Equivalent spring model and Single degree of freedom model) to simplify the traditional dynamic analysis of a whole structure by two steps: (1) local damage analysis of columns under blast on a member level, and (2) global analysis with an equivalent spring model considering the failure process of damaged columns. This avoids the global structural analysis in Step 1 and also avoids the simulation of blast loads in Step 2. The failure time and residual load-bearing capacity of damaged columns under blast are considered and their effect on the global collapse resistance is studied. The results show that they have significant effect on the collapse resistance. The longer the failure time, the larger the residual resistance, the smaller the structural displacement, and the greater the collapse resistance. It is found that the dynamic behavior of structures is sensitive to the ratio of column failure time to the structural vibration period t0/T. The larger the t0/T, the smaller the dynamic amplification effect. It is suggested to consider a smaller dynamic amplification factor rather than 2 for t0/T >0.3. For the selection of analysis methods for blast-induced collapse of structures, it is recommended to adopt the alternate path method for t0/T <0.2, and static analyses for t0/T >3. While for 0.2< t0/T <3, dynamic analyses considering the effect of failure time and residual resistance of damaged columns should be conducted.
KEYWORDS
Progressive collapse, steel framed structure, blast, equivalent spring method, single degree of freedom model, failure time, residual load-bearing capacity
REFERENCES
[1] ASCE 7. American Society of Civil Engineers Standard 7 Minimum Design Loads for Buildings and Other Structures, American Society of Civil Engineers, 2010.
[2] Song, L., Izzuddin, B.A. and Elnashai, A.S., “Integrated Adaptive Environment for Fire and Explosion Analysis of Steel Frames - Part I: Analytical Models”, Journal of Constructional Steel Research, 2000, Vol. 53, No. 1, pp. 63-85.
[3] Izzuddin, B.A., Song, L. and Elnashai, A.S., “Integrated Adaptive Environment for Fire and Explosion Analysis of Steel Frames - Part II: Verification and Application”, Journal of Constructional Steel Research, 2000, Vol. 53, No. 1, pp. 87-111.
[4] Liew, J.Y.R. and Chen, H., “Explosion and Fire Analysis of Steel Frames using Fiber Element Approach”, Journal of Structural Engineering, 2004, Vol. 130, No. 7, pp. 991-1000.
[5] Chen, H. and Liew, J.Y.R., “Explosion and Fire Analysis of Steel Frames using Mixed Element Approach”, Journal of Engineering Mechanics, 2005, Vol. 131, No. 6, pp. 606-616.
[6] Yu, H.X. and Liew, J.Y.R., “Steel Framed Structures Subjected to the Combined Effects of Blast and Fire - Part 1: State-of-the-art Review”, Advanced Steel Construction, 2005, Vol. 1, No. 1, pp. 67-84.
[7] Yu, H.X. and Liew, J.Y.R., “Steel Framed Structures subjected to the Combined Effects of Blast and Fire - Part 2: Case Study”, Advanced Steel Construction, 2005, Vol. 1, No. 1, pp. 85-104.
[8] Magallanes, J.M., Martinez, R. and Koenig, J.W. “Experimental Results of the AISC Fullscale Column Blast Test”, Report. Karagozian & Case, 2006.
[9] Turcic, F., Luketina, I. and Plisic, M., “Collapse and Rehabilitation of Steel Tanks Roof Structures”, Advanced Steel Construction, 2007, Vol. 3, No. 4, pp. 723-736.
[10] Yu, H., Izzuddin, B.A. and Zha X.X., “Progressive Collapse of Steel-framed Buildings: Influence of Modelling Approach”, Advanced Steel Construction, 2010, Vol. 6, No. 4, pp. 932-948.
[11] Demonceau, J.F. and Jaspart, J.P. “Experimental Test Simulating a Column Loss in a Composite Frame”, Advanced Steel Construction, 2020, Vol. 6, No. 3, pp. 891-913.
[12] Wu, K., Li, B. and Tsai, K., “Residual Axial Compression Capacity of Localized Blastdamaged RC Columns”, International Journal of Impact Engineering, 2011, Vol. 38, No. 1, pp. 29-40.
[13] Nethercot, D.A., Stylianidis, P., Izzuddin, B.A. and Elghazouli, A.Y. “Enhancing the Robustness of Steel and Composite Buildings”, Advanced Steel Construction, 2011, Vol. 7, No. 1, pp. 64-85.
[14] Wang, W.M., Li, H.N. and Tian, L., “Progressive Collapse Analysis of Transmission Towerline System under Earthquake”, Advanced Steel Construction, 2013, Vol. 9, No. 2, pp. 161- 172.
[15] Design of Buildings to Resist Progressive Collapse, Unified Facilities Criteria (UFC) 4-023- 03, US Department of Defense (DoD), 2013.
[16] Eurocode 1: Actions on Structures - Part 1-7: General Actions -Accidental Actions, 2010.
[17] Progressive Collapse Analysis and Design Guidelines for New Federal Office Buildings and Major Modernization Projects, US General Services Administration (GSA), 2005.
[18] Manual for the Systematic Risk Assessment of High-risk Structures against Disproportionate Collapse. The Institute of Structural Engineers, UK, 2013.
[19] Li, G.Q., Sun, J.Y. and Wang, K.Q. “Research on a Simplified Frame Column Model to Resist Blast Load”, Journal of Vibration and Shock, 2007, Vol. 26, No. 1, pp. 8-11.
[20] Sun, J.Y., “Study on the Behavior of Steel Reinforced Concrete Columns under Blast and Impact Loads”, PhD thesis, Tongji University, Shanghai, China, 2006.
[21] Yang, T.C., “The Failure Mechanism of Steel Column under Blast Loading and its Effect on Progressive Collapse of Steel Frame”, PhD Thesis, Tongji University, Shanghai, China, 2013.
[22] Qu, H.Y., “Research on the Characteristics of Concrete-filled Steel Tubular Column Subjected to Blast Loading”, PhD Thesis, Tongji University, Shanghai, China, 2011.
[23] Pilchard, S.J. and Perry, S.H., “The Impact Behavior of Sleeved Concrete Cylinders”, The Structural Engineer, 2000, Vol. 178, No. 17, pp. 34-42.