Seismic Analysis of High-Rise Building using Response Spectrum Method

A large area of India is susceptible to damage due to the impact of earthquake. Hence, it is essential to consider the seismic load for the design of multi-storied building. For that, program in STAAD Pro. v8i software with different conditions of lateral load resisting system is used. Some models of brace frame and bare frame are prepared and carried out through seismic analysis. A regular reinforced concrete frame structure having 15 floors i.e. (G+14) is designed using different types of bracing like x-cross brace, chevron brace, inverted chevron brace, braced chevron brace etc. Three types of channel sections i.e. (ISMC 150, ISMC 250, ISMC 350) with different cross sectional area are used to compare the results of different patterns of braced structure with unbraced structure. Zone-II is considered for the analysis of unbraced and braced models. Seismic analysis is performed by using response spectrum method for the design of high-rise building. The analysis has produced the effect of actual distribution of forces and higher modes of vibration in a better way. For the purpose of seismic analysis IS: 1893 (part 1): 2002 is used. And test results including time period, bending moment, joint displacement, story drift, base shear and axial force are presented to get an effective lateral load resisting system.