EXPLOSION AND FIRE ANALYSIS OF STEEL FRAMES USING FIBER ELEMENT APPROACH

Since the September 11th terrorist attacks, the research and engineering communities have given significant attention to building performance under combined effects of impact, explosion, and fire. This paper presents a numerical approach for inelastic transient analysis of steel frame structures subjected to explosion loading followed by fire. The approach adopts the use of beam-column element and fiber element to enable a realistic modeling of the overall framework subjected to localized explosion and fire. Detailed requirements for modeling elasto-plastic materials subjected to elevated temperature and high-strain rates are presented. Verification examples are provided. The influence of blast loads on the fire resistance of a multistory steel frame is studied.

[1]  Ian Burgess,et al.  A nonlinear analysis for three-dimensional steel frames in fire conditions , 1996 .

[2]  P. Perzyna.  Fundamental Problems in Viscoplasticity , 1966 .

[3]  Amr S. Elnashai,et al.  An integrated adaptive environment for fire and explosion analysis of steel frames — Part II:: verification and application , 2000 .

[4]  K. Tan,et al.  Visco-Elasto-Plastic Analysis of Steel Frames in Fire , 2002 .

[5]  J. Y. Richard Liew,et al.  Nonlinear Plastic Hinge Analysis of Three-Dimensional Steel Frames in Fire , 2004 .

[6]  B. A. Izzuddin,et al.  Rate-sensitive analysis of framed structures Part I: model formulation and verification , 1997 .

[7]  W. F. Chen,et al.  Improved nonlinear plastic hinge analysis of space frame structures , 2000 .

[8]  S. R. Bodner,et al.  PLASTIC DEFORMATIONS IN IMPACT AND IMPULSIVE LOADING OF BEAMS , 1960 .

[9]  Hong Chen,et al.  Spread-of-plasticity analysis of three-dimensional steel frames , 2002 .

[10]  David A. Nethercot,et al.  Modelling steel frame behaviour under fire conditions , 1991 .

[11]  Yong Wang,et al.  Research Toward Use of Unprotected Steel Structures , 2000 .

[12]  J. Y. Richard Liew,et al.  EXPLOSION AND FIRE ANALYSIS OF STEEL FRAMES , 2002 .

[13]  Ian Burgess,et al.  The analysis of semi-rigid frames in fire—a secant approach , 1995 .

[14]  C. Oran.  Tangent Stiffness in Plane Frames , 1973 .

[15]  J. Y. Richard Liew.  Performance Based Fire Safety Design of Structures — A Multi-Dimensional Integration , 2004 .

[16]  Peter Schaumann,et al.  Structural steel and plane frame assemblies under fire action , 1986 .

[17]  L. K. Tang,et al.  Advanced analysis for the assessment of steel frames in fire , 1998 .

[18]  Colin Bailey,et al.  Development of computer software to simulate the structural behaviour of steel-framed buildings in fire , 1998 .

[19]  Ian Burgess,et al.  The influence of connection stiffness on the behaviour of steel beams in fire , 1997 .

[20]  Man-Biu Bill Wong.  Elastic and plastic methods for numerical modelling of steel structures subject to fire , 2001 .

[21]  Kang Hai Tan,et al.  Strength and Stability of Steel Frames in Fire: Rankine Approach , 2001 .

[22]  R. Minne,et al.  Buckling of steel columns in fire conditions , 1981 .

[23]  John Hetherington,et al.  Blast and ballistic loading of structures , 1994 .

[24]  Yngve Anderberg,et al.  Modelling Steel Behaviour , 1988 .

[25]  Zhaohui Huang,et al.  Three-Dimensional Analysis of Composite Steel-Framed Buildings in Fire , 2000 .

[26]  Gregory G. Deierlein,et al.  Spread of Plasticity—Quasi-Plastic-Hinge Approach , 1984 .

[27]  Joel Kruppa,et al.  Collapse Temperature of Steel Structures , 1979 .

[28]  Ian Burgess,et al.  Analyses of the effects of cooling and fire spread on steel-framed buildings , 1996 .

[29]  Reza Abbasnia,et al.  Large Deformation Analysis of Elastic Space Frames , 1991 .

[30]  Jian-Xin Gu,et al.  Exact Tangent Stiffness for Imperfect Beam-Column Members , 2000 .

[31]  S. Chan,et al.  Refined plastic hinge analysis of steel frames under fire , 2001 .