An Efficient Reliability-Based Approach for Evaluating Safe Scaled Distance of Steel Columns under Dynamic Blast Loads

Damage to building load-bearing members (especially columns) under explosions and impact are critical issues for structures, given that they may cause a progressive collapse remarkably increase the number of potential victims. One best ways deal with this issue is provide values safe protective distance (SPD) structural verify, so amount damage (probability exceedance low damage) cannot exceed specified target. Such an approach takes form so-called scaled (SSD), which can be calculated general but requires dedicated expensive studies. This paper presents improved calculation method, based on reliability analysis, evaluate minimum SSD steel columns dynamic blast loads. An explicit finite element (FE) used Monte Carlo simulation (MCS) method obtain SSD, as result probability. The uncertainties associated material properties considered using statistical distributions. A parametric study thus carried out curves probability range H-shaped different size boundaries. Finally, detected extensive databank propose practical empirical formulation evaluating loaded good level accuracy high efficiency.