Design Simulation of Irregular Shape RC Structure for Progressive Collapse using Non-Linear Analysis

Abstract

In the past few years, the requisite to plan high-rise buildings in reinforced concrete structures due to aggrandize in population, so the structure is designed based on structural reliability theory to assure their safety. Over time, structures undergo unintended acts, both natural and man-made, leading to damage or failure. The "Progressive Collapse Analysis of Building" studies this type of failure. When a vertical load-bearing part is removed due to a man-made or natural hazard, the building's weight is transferred to adjacent columns, causing the failure of adjacent members and ultimately a partial or total breakdown of the structure.
This study analyses five 15-story RC Framed Structure models, one regular framed structure, and four regular framed structures with vertical member removal. Non-liner static analysis is performed using SAP2000.V23, applying load according to GSA guidelines 2003. The building plan has trapezoidal geometry with 7x10 bays in zone V. The study considers demand capacity value, maximum base-shears v/s displacement, and hinge formation. The building has a high potential for progressive collapse, and the structure behavior for this collapse is compared in parametric studies. comparison of demand capacity value, Base shear vs Maximum Storey Displacements. This study aims to minimize failure due to external forces on a structure through analysis and design simulation, preventing minimal loss of life and structure.