Analysis on Behavior of High-Rise Irregular R.C. Structure Against Influence of Strong Strength of Wind Load

The revised paper uses the actual ETABS model images and all eight result graphs from the uploaded dissertation. The controlled comparison demonstrates that plan geometry has a decisive influence on deformation, force attraction and dynamic behaviour. The square configuration provides the best balanced wind response, with the lowest roof displacement of 291.770 mm in WDX and 269.754 mm in WDY and a first-mode period of 4.372 s. The T-shaped model is the most flexible, reaching 391.607 mm in WDY and a first period of 4.797 s. The rectangular model governs WDX roof displacement and WDY maximum drift, showing that a regular plan can remain direction-sensitive when its aspect ratio is large. The square model attracts the largest Story 1 shear, equal to 65,261.86 kN in WDX and 76,663.95 kN in WDY, while the T-shaped model attracts the lowest. This inverse displacement–shear relationship confirms that lower base force does not automatically indicate superior performance. The L-shaped and hollow-rectangular models have comparatively low maximum drift, but their re-entrant corners and openings require torsional, diaphragm and collector-force verification. The C-shaped model combines high WDY displacement and drift and therefore requires improved stiffness distribution. For final design, the study recommends verification of the exact wind speed and exposure factors, re-export of the square-model frequency data, evaluation of cumulative modal mass participation, edge drift, torsional rotation, P-Delta sensitivity and base overturning moment. Advanced wind-tunnel or CFD loading, semi-rigid diaphragm modelling, neighbouring-building interference and acceleration-based occupant-comfort assessment should be included in future work. These measures will convert the comparative ETABS study into a complete performance-based wind design framework.

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