International Journal of Science, Engineering and TechnologyAuthors: Mr. Arun Kumar, Dr. Bhagyashree Naik
Abstract: The seismic performance of high-rise reinforced concrete (RC) buildings is a critical concern in earthquake-prone regions. This paper investigates the comparative seismic behavior of a twelve-storey RC building (42 m height, 15 × 20 m plan) modeled in STAAD.Pro. The study considers three structural configurations: (i) bare frame, (ii) braced frame with X-type steel bracings, and (iii) shear-wall frame with 250 mm RC shear walls. Seismic loading is applied using the Response Spectrum Method (RSM) as per IS 1893:2016, along with two historical ground motion records—Imperial Valley (1940) and San Francisco (1906). Key response parameters examined include the fundamental time period, base shear, inter-storey drift, and top-storey displacement. Results indicate that shear walls significantly enhance structural stiffness, reducing displacements and drifts, with corner placement yielding optimum performance. Bracings moderately improve seismic response and offer economical retrofitting potential but are less effective than shear walls. The findings provide practical guidance for engineers in selecting lateral load-resisting systems for high-rise RC buildings in seismic zones
DOI: http://doi.org/10.5281/zenodo.17191873
