PSI - Issue 46

Ashikur Rahman Simon et al. / Procedia Structural Integrity 46 (2023) 162–168 Simon A. R. et al./ Structural Integrity Procedia 00 (2019) 000–000

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2.2. Methods for seismic analysis of buildings There are two commonly used methods for determining seismic design lateral forces: equivalent static analysis and response spectrum analysis. In this study, equivalent static analysis was used. The equivalent static analysis is a simplified technique that substitutes the dynamic loading effect of an expected earthquake by a static force distributed laterally on the building structure (Prasad et al., 2014). In this technique, it is considered that the building responds in its fundamental mode when the vibrations due to earthquakes are generated (Belgaonkar et al., 2017). For this to be valid, the building must be low rise and must be sufficiently symmetrical to prevent torsional motion under ground motion. This method of analysis can be applicable to the buildings whose seismic response in each direction is not significantly influenced by contributions from modes higher than the fundamental mode. 2.3. Structural models Six structural models have been developed for the analysis. One model has been constructed without the shear wall and five others have been constructed with different locations and orientations of shear walls which are shown in Figure 1.

Fig. 1. (a) Model 1 (No shear wall); (b) Model 2 (Shear walls at center); (c) Model 3 (Shear walls at sides and Inner walls); (d) Model 4 (Shear walls at the periphery); (e) Model 5 (Shear walls at corners); (f) Model 6 (Shear walls at center and edges).