Analysis of a High-Rise Building Frame Considering Lateral Load Using Analysis Tools

Abstract

Buildings must be able to safely withstand any significant ground motions that could happen during construction or regular operation in order to be considered earthquake resistant. The impacts that ground motions have on structural reactions, however, are special. The time-history analysis is the analytical method that is most accurate for structures that are subjected to severe ground vibrations. For this analysis, a stepwise solution is used to integrate the pushover analysis of a multi-degree-of-freedom system, or MDOF, in the time domain in order to depict the real reaction of a structure. Although it can be applied to all practical uses, this method takes time. The pushover analysis was developed because it was necessary to develop quicker techniques that would nevertheless provide a trustworthy structural assessment or design of structures subjected to seismic loading.
The foundation of pushover analysis is the presumption that during a seismic event, structures vibrate primarily in the first mode or in the lower modes. As a result, the multi-degree-of-freedom system is reduced to a single-degree-of-freedom system that has attributes that are predicted by the nonlinear static analysis of the multi-degree-of-freedom system, or SDOF system. The ESDOF system is then subjected to a response spectrum analysis with constant-ductility spectra, or damped spectra, or a nonlinear time history analysis. Through modal connections, the seismic demands for the MDOF system are converted from the ESDOF system's computed seismic demands.
To illustrate the overall effects of the RCC frame building, a model was made. In seismic zone II, four G+11 concrete planar frames with four bays in each of the X and Y directions were built in accordance with Indian codes. Each frame is subjected to five unique loading situations. Pushover analysis is used to evaluate the different frames after they have been created with varied elevational irregularities but the same loading conditions. The outcomes of each frame are compared. The outcome consists of a pushover curve between base shear and displacement as well as capacity spectrum, which are performed and evaluated for each frame. 
This study used STAAD.Pro v8i to analyse the non-linear response of RCC frames under stress with the aim of determining the relative weights of various parameters in the non-linear analysis of RCC frames in seismic zone II, taking into account comparisons of the case with bare frame and infill wall.