Seismic Performance Evaluation of Lateral Load-Resisting Systems in High-Rise Reinforced Concrete Frames under Nonlinear Static Analysis

Document Type : Original Article

Authors

1 PhD,Department of civil engineering, SR.C., Islamic Azad University, Tehran, Iran

2 PhD, Department of Civil Engineering, Bayda Branch, Islamic Azad University, Bayda, Iran

3 Master of Science, Faculty of Technology and Engineering, Islamic Azad University, Malayer Branch, Malayer, Iran

Abstract

In recent years, the construction of high-rise buildings using various lateral load-resisting systems has increased significantly. This study aims to evaluate and compare the seismic performance of reinforced concrete lateral load-resisting systems in tall buildings, focusing on minimizing lateral displacement, maximizing energy dissipation, and reducing seismic vulnerability. For this purpose, twelve 10-story reinforced concrete frames with a uniform story height of 3 meters were designed and analyzed using nonlinear static (pushover) analysis in ETABS. The considered systems include moment-resisting frames (special and intermediate), dual systems (special and intermediate), and ordinary moment frames combined with shear walls (special and intermediate). Each model consists of three- and five-bay frames with 5-meter spans. The comparison was based on capacity curves and energy dissipation capability. Results indicate that the special moment-resisting frame exhibits the highest inelastic ductility and energy dissipation capacity (taken as 100%), approximately three times greater than the intermediate dual system and 2.5 times that of the ordinary frame with intermediate shear walls. This superior performance makes the special moment-resisting frame the safest option in preventing global collapse. Meanwhile, the special dual system provides an optimal balance between stiffness and ductility, maintaining 76.67% of the energy dissipation capacity of the special moment frame while effectively controlling story drift. Therefore, it is recommended as the most practical and efficient system for high-seismicity regions.

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Main Subjects


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Volume 15, Issue 3 - Serial Number 57
Autumn
November 2024
Pages 183-191
  • Receive Date: 12 September 2024
  • Revise Date: 20 October 2024
  • Accept Date: 03 November 2024
  • Publish Date: 02 December 2024