Structural analysis and design of a multistoried RCC building to prevent disproportionate collapse using E-Tabs

Abstract

Over the recent decenniums disproportionate collapse debacles have emphasized the codified bodies around the globe; as a result, there had been an increased research interest in the topic “Disproportionate Collapse”. Civil engineering structural systems are susceptible to disproportionate collapse when prone to aberrant loads beyond the ultimate capacity of critical structural components. Sudden loss of critical structural components may result in the complete collapse of the structure. Presently, researchers follow different modelling ideas to simulate the loss of critical load supporting member for disproportionate collapse assessment. This paper is intended to study about the practices that we should follow to reduce the potential of disproportionate collapse in building. This project includes the effective modes to analyze and model the peculiar types of structures using advanced software like E-TABS. In this dissertation work a G + 10 storied reinforced concrete building was analyzed and designed for dead load, live load, wind load, and seismic load with factor of safety. The bending moment and area of steel required by the elements are noted for the comparative study. Few critical elements are studied which could trigger the progressive collapse. Notional removal of the critical element is carried out and the building is analyzed for gravity loads alone. Due to the removal of key elements the performance in the structure changes. These changes are noted and the necessary corrections are made in the sections to prevent it from disproportionate collapse.