A Study of Effect of Earthquake Ground Motion on Analysis of Structures

A Comparative Study of Linear and Nonlinear Analysis Techniques for Seismic Effects on Structures

Abstract

The effect of the earthquake on a building depends not only on the peak value of groundacceleration, but also on the size and shape of the building, the arrangement of structural elements, andthe presence of mass and stiffness irregularities. Dynamic analysis needs to be performed for knowingthe performance of the structure under earthquake loading. The dynamic analysis can be linear or nonlinear.Linear analysis is performed using response spectrum method. Non-linear analysis can beperformed using time history analysis. There is advancement in computing techniques with the arrivalof more powerful computers. Advanced computer programmes and applications are developed forseismic analysis of the structures. In present study a programme is written in MathCADsoftware and theoutput is validated for with professional software STAAD.Pro for different configurations of thestructures.The modal response is compared for evaluating natural frequency, fundamental time period,modal frequency, mode shape coefficients.