PROBABILISTIC SAFETY ASSESSMENT OF THE BUILDINGS DESIGN DUE TO THE BLAST LOAD

This paper deals with the problem of the probabilistic design of buildings under influence of extreme loads from above-ground explosion. The shock wavepropagation in the air and the effect of space wave propagation to high rise building isevaluated. There is considered explosion of 100kg TNT at 40m in accordance ofIS:4991-1968 for residential buildings. The response of the concrete structures underthe shock load is a complex nonlinear and rate-depend process. Willam-W rnke‘sfailure criterion and the smeared approach for cracking and reinforcement modeling isused. The simulations of the variable input parameters (model and materialuncertainties) are used on the base of the response surface method (RSM). On theexample of the panel building the efficiency of the probabilistic analysis to optimaldesign of the high rise buildings is presented.