Comparative Analysis of High Rise Building Subjected to Lateral Loads and Its Behavior

Abstract

The race towards new heights and architecture has not been without challenges. Tall structures have continued to climb higher and higher facing strange loading effects and very high loading values due to dominating lateral loads. The design criteria for tall buildings are strength, serviceability, stability and human comfort. But the factors govern the design of tall and slender buildings all the times are serviceability and human comfort against lateral loads. This paper reviews the evolution of tall building’s structural systems. For the primary structural systems, various schemes for the buildings is presented. While modular type structural systems for tall buildings are discussed. In this present study, main focus is to check the feasibility of the new scheme (replacing columns and beams by R.C.C. walls using Aluminum modular formwork) and its effectiveness over the regular scheme. Necessity of transfer mechanism is also discussed. Residential cum commercial building with G + 40 storey has been considered for the analysis. To carry out detailed investigation on tall buildings, two different structural systems have been considered for the analysis such as (A) model I—regular frame system and (B) model II—modular wall slab system. The building is analysed for various load cases, mainly gravity loads (due to dead load and live load) and lateral loads (due to earthquake and wind load). For seismic analysis response spectrum method has been used as dynamic analysis and for wind analysis gust factor method has been used. Feasibility of the scheme is studied for both the options. Analysis is carried out by using standard package ETABS. The comparison of these models for different parameters like storey drift, storey displacement, storey shear, and mode shape with respect to time period are presented for various load cases.