Venkatesh Kodur (Michigan State University, USA)
Dr. Venkatesh Kodur is a University Distinguished Professor in the Department of Civil and Environmental Engineering at Michigan State University (MSU). He also serves as Director of the Centre on Structural Fire Engineering and Diagnostics at MSU. His research interests include: Evaluation of fire resistance of structural systems through large scale fire experiments and numerical modeling and Characterization of materials under high temperature. His research contributions has lead to the development of fundamental understanding on the fire behavior of material and structural systems and also resulted in numerous design approaches and innovative and cost-effective solutions for enhancing fire-resistance of structural systems. He has published over 400 peer-reviewed papers in journals and conferences, and has given numerous invited key-note presentations. He is one of the highly cited authors in Civil Engineering and as per Google Scholar, he has more than 13,500 citations with an "h” index of 64. The methodologies, techniques and design guidelines, resulting from his research, have been incorporated in to various codes and standards, as well practical applications, in the US and around the world and are instrumental in minimizing the destructive impact of fire in the built infrastructure.
Prof. Kodur is a Fellow of the Canadian Academy of Engineering and a Foreign Fellow of Indian National Academy of Engineering. He is a professional engineer, Fellow of American Society of Civil Engineers, Fellow of Society of Fire Protection Engineers, Fellow of Structural Engineering Institute, Fellow of American Concrete Institute, Associate Editor of Journal of Structural Engineering, Past Chairman of ACI Fire Protection Committee, Chairman of ASCE-29 (Fire) Standards Committee and a member of UK-EPSRC College of Reviewers. He has won many awards including Fulbright Scholar Award, American Institute of Steel Construction Faculty Fellowship Award, MSU Distinguished Faculty Award, NRCC (Government of Canada) Outstanding Achievement Award and NATO Award for collaborative research. Dr. Kodur was part of the FEMA/ASCE Building Performance Assessment Team that studied the collapse of WTC buildings as a result of September 11 incidents.
Advanced Analysis for Tracing Fire Induced Progressive Collapse of Steel Framed Buildings by Kodur V.K.R. and Venkatachari S.
A steel-framed building, when exposed to a severe fire, can experience instability at a local or global level and this can lead to progressive collapse of a part or the entire structure. The fire performance of a steel-framed building depends on many factors including the geometry of the structure, load level, intensity and severity of fire exposure, the extent of fire spread (number of compartments or floors burning), connection configurations, and high-temperature properties of steel. The current fire design provisions for steel framed buildings is mainly based on sectional or member level analysis and this type of analyses does not fully take in to account realistic load, fire characteristics, material properties, and restraint conditions, as present during a fire exposure. In order to evaluate realistic fire performance of a steel framed building, an advanced analysis is to be carried out at system level, with due consideration to all influencing factors.
The presentation will focus on the application of advanced analysis for tracing the fire induced progressive collapse of steel framed buildings. An approach for incorporating full effects of transient creep, restraint conditions, local instability, and different failure limit states in fire resistance analysis will be outlined. The evolution of temperature-induced instability, leading to progressive collapse, in a fire exposed steel framed building will be discussed. Results from a set of numerical studies will be utilized to recommend guidelines for minimizing the onset of fire induced instability, as well as progressive collapse, in steel framed structures.