Performance-Based Seismic Assessment of Response Reduction Factor for C-Shaped RCC Buildings
| International Journal of Civil Engineering |
| © 2025 by SSRG - IJCE Journal |
| Volume 12 Issue 10 |
| Year of Publication : 2025 |
| Authors : A.Asher, M.Murudi |
10.14445/23488352/IJCE-V12I10P106
How to Cite?
A.Asher, M.Murudi, "Performance-Based Seismic Assessment of Response Reduction Factor for C-Shaped RCC Buildings," SSRG International Journal of Civil Engineering, vol. 12, no. 10, pp. 70-78, 2025. Crossref, https://doi.org/10.14445/23488352/IJCE-V12I10P106
Abstract:
With the growing demand for infrastructure and habitations, it is seldom possible to go with regular configurations. Therefore, the layout of buildings unavoidably involves various types of irregularities. This study focuses on one such irregularity that arises in plan, i.e., the re-entrant corner irregularity in C-shaped plan buildings. The buildings are designed using relevant Indian codes. Nonlinear static pushover analysis is carried out to obtain the buildings inelastic response. Three-dimensional models of the buildings are subjected to non-linear pushover analysis, and the seismic performance is studied in the inelastic range wherein the Response Reduction Factor (R) is obtained for various storey configurations with different irregularity indices. The Special Moment Resisting Frame (SMRF) system is used as the structures are designed for seismic zone IV. While the design codes provide a single value for the response reduction factor for a structural system irrespective of any irregularity, it is seen from this study that the complex nature of irregularity creates variations in R values, leading to lower values in some cases, thereby affecting the safety of the structure under a seismic event.
Keywords:
C-Shaped Buildings, Plan Irregularity, Pushover Analysis, Seismic Performance.
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