Comparative Analysis of Heighted Structure Using Analysis Tools STAAD, Sap2000, ETABS Considering Lateral Loads

Abstract

During an earthquake, failure of structure starts at points of weakness. This weakness arises due to discontinuity in mass, stiffness and geometry of structure. The structures having this discontinuity are termed as Irregular structures. Irregular structures contribute a large portion of urban infrastructure. Vertical irregularities are one of the major reasons of failures of structures during earthquakes. For example structures with soft storey were the most notable structures which collapsed. So, the effect of vertically irregularities in the seismic performance of structures becomes really important. Height-wise changes in stiffness and mass render the dynamic characteristics of these buildings different from the regular building. IS 1893 definition of Vertically Irregular structures. STAAD stands for Structural Analysis and Design any object which is stable under a given loading can be considered as structure. ETABS is the Acronym of EXTENDED 3D ANALYSIS OF BUILDING SYSTEMS, is software developed by Computers and Structures, Inc. (CSI). SAP2000 is general-purpose civil-engineering software ideal for the analysis and design of any type of structural system. Basic and advanced systems, ranging from 2D to 3D, of simple geometry to complex, may be modeled, analyzed, designed, and optimized using a practical and intuitive object-based modeling environment that simplifies and streamlines the engineering process. The aim of this study is to determine the most suitable and approximate software to generate structural analysis result. This can help the designer to have an authentic base to select analysis tool between STAAD, ETABS and SAP 2000 before performing analysis. To conclude the feasibility of these software’s a G+10 building with irregular geometry has been analysed, designed and compared the results.