Behavior of RC Flat Slab Buildings Using Nonlinear Static Analysis

Abstract

As we all are familiar with the fact that earthquake forces are random and dominant forces in nature, so in order to deal with such a hazardous force we use static and dynamic analysis of structure. Important parameter in seismic analysis includes ductility, stiffness, damping, mass, load carrying capacity, base shear, response spectrum, mass capacity curve and loading capacity curve. Indian Standard 1893-2016 is used to checkout seismic analysis of multi-storey building. Earthquake engineering is a vast branch and varieties of method are used to carry out the calculation depending upon either external action of structure or behavior of structure/structural materials. Commonly static and dynamic procedures include Linear Static Analysis, Non-Linear Static Analysis, Linear Dynamic Analysis, and Non-Linear Dynamic Analysis. Pushover Analysis is another word for Non-Linear Static Analysis. For existing structure, the strength and drift capacity are used for evaluation. For a particular type of earthquake seismic demand is analyzed using Pushover Analysis. This analysis includes mathematical model by non-linear load deformation of individual members and element of multi-storey (G+5 in this project) subjected to increasing lateral loads representing inertia forced in an earthquake until a ‘Target Displacement’ is exceeded. Estimation of response characteristic like force and displacement capacities of structure is calculated and graph or a curve is plot. Due to increasing lateral loads, deformation takes place in individual members or element of multi-storey building until failure is observed in the respective element. Pushover Analysis also throws light on consequential effect on stability of structure. The overall design of seismic definition is carried out on E-tabs.