MODELING PROGRESSIVE COLLAPSE IN REINFORCED CONCRETE FRAMED STRUCTURES
The paper presents an analytical formulation of an element removal algorithm based on dynamic equilibrium and the resulting transient change in system kinematics. The algorithm is implemented into an open-source finite element code, is numerically validated using a benchmark problem with simple element removal criteria, and is able to capture the effect of uncertainty in member capacity. Realistic element removal criteria are introduced for mode-dependent gravity load collapse of seismically deficient and retrofitted reinforced concrete (RC) columns. An application is presented using a RC 3-bay, 3-story frame previously tested on a shaking table. In this application, comparison between the computationally predicted and experimentally observed collapse modes is presented giving confidence in the developed analytical formulation.
Collapse Dynamic analysis Element removal Frame Reinforced concrete
Khalid M. Mosalam Mohamed Talaat Sangjoon Park
Department of Civil and Environmental Engineering, University of California,Berkeley, CA 94720-1710, Simpson Gumpertz and Heger Inc., San Francisco, U.S.A. Dept. of Civil & Env. Eng., Univ. of California, Berkeley, U.S.A.
国际会议
14th World Conference on Earthquake Engineering(第十四届国际地震工程会议)
北京
英文
2008-10-12（万方平台首次上网日期，不代表论文的发表时间）