ANALYSIS OF HIGH RISE BUILDINGS WITH DIFFRENT SHAPES BY CORNER MODIFICATION & CONSIDERING AERODYNAMIC EFFECT

Structural Engineering

A literature review process including 5 standard codes & thesis and 40 research papers are conducted to detailed study including the conventional shape of building and Y-shaped building and seismic effect throughout the structure. A total three-issue found throughout the literature review method which is ‘Analysis of RC frame and shear wall Structure’, ‘Non- Linear Time History Analysis of High-Rise Structure’ or “Dynamic Analysis of various geometrical shape considering aerodynamic optimization”. From all three issues “Dynamic Analysis of various geometrical shapeconsidering aerodynamic optimization”was found suitable for study.The conclusion of the literature review was in the form of key issues. All the research papers under key issues provide a good understanding of seismic analysis of various shapes of building with story drift, story displacement, and torsion under the limitation and condition.For conducting this study, we developed 4 models for square shape and Y-shape building with corner modification. The floor plan of square shape is similar to each other and Y-shape is also similar plan to each other. Material and ssconfiguration are also similar to each other. For square model recessed and chamfered corner modification selected but for Y-shaped building, regular corner and chamfered corner modification is used. For all 4 building models, a Non-linear direct integration time history analysis conducted using ETABS software.After conducting Dynamic analysis, obtained results show displacement in X-axis and Y-axis for each building model under the seismic effect. Where this can be seen from obtained outcomes that displacement in both axes of these building depends upon the frequency of input ground motion. Also, the variation of displacement can be seen in all models under the permissible limit as per IS 1893: 2002.due to the dynamic analysis all models represent Non- linearity behavior in Max's story response from 2nd story to top story. These maximum values of the response parameter for these test models depending on the orientation of columns of the building.Between all four models, the same loading in a particular direction shows the superior performance of Y-shape test model comparing among the tall building model.

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