Efficiency of the Alternative Load Path Method to Evaluate the Progressive Collapse Potential of 3D Building under Blast Load

• DOI: 10.11159/icsect19.133
• Publication Date: 2019-04-05T12:55:37Z
• Authors: Mohamed Ahmed Galal; Atul Krishna Banik
• Keywords: Progressive Collapse

the work in progressive collapse of three-dimensional composite buildings quite limited due to cost and difficulties full-scale experimental tests complexity modelling technique.Researchers design engineers are following The Alternative Load Path method (ALP) recommended by GSA DoD guidelines mitigate potential.The commonly used ALP method, which considers as a threat-independent methodology, taking into account single column removal scenarios only regardless threat load type.This paper investigates efficiency determine potential 3D building when subjected 500 kg TNT.Two-stage nonlinear dynamic analysis 9-story with top seat double web angle connection is carried out.In first stage axial columns under gravity calculated.The second devotes find out number likely be involved using damage index criteria through three-step loading.A precise implemented effect location remaining capacity column.The influence boundary condition on response blast highlighted.The results show that methodology not usually conservative may more than one wiped TNT small vehicle.The (stability, yielding fracture) cannot capture realistic bearing column, related its global behaviour has used.The structure drastically increased two removed at time compared DoD.