Journal of Seismology and Earthquake Engineering

Journal of Seismology and Earthquake Engineering

Impact of Shear-Flexural Interaction on the Collapse Vulnerability of Tall Reinforced Concrete Frame-Wall Buildings

Document Type : Research Article

Authors
Mohammad Sadegh Barkhordari 1
Mohsen Tehranizadeh 2
1 Ph.D., Department of Civil & Environmental Engineering, Amirkabir University of Technology (Tehran Polytechnic), Tehran, Iran
2 Professor, Department of Civil & Environmental Engineering, Amirkabir University of Technology (Tehran Polytechnic)
10.48303/jsee.2024.2029431.1090
Abstract
Empirical studies have demonstrated a significant interaction between nonlinear flexural and shear responses in reinforced concrete shear walls. This paper investigates the implications of shear-flexural interaction (SFI) on the seismic performance of high-rise reinforced concrete dual frame-wall systems. Structures with three different heights (20, 25 and 30 stories) are analyzed. Comparative structural analyses are conducted using two modeling approaches for shear walls: one incorporating SFI and the other neglecting it. A set of ground motion records from the Federal Emergency Management Agency (FEMA) P695 is utilized to perform incremental dynamic analysis, facilitating a detailed evaluation of structural behavior under seismic loading. Collapse risk assessment encompasses seismic hazard analysis and the determination of collapse fragility. Furthermore, the collapse performance is appraised following the FEMA P695 methodology. The results underscore the substantial impact of SFI on both seismic performance and collapse risk in high-rise reinforced concrete structures. Specifically, integrating SFI into shear wall modeling results in elevated collapse risk and diminished ACMR. This underscores the pivotal role of SFI in shaping structural resilience.
Keywords
Shear–Flexure Interaction
Concrete Shear Walls
Seismic Collapse Analysis
FEMA P695
OpenSees

Subjects

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Journal of Seismology and Earthquake Engineering
Volume 26, Issue 2
2024
Pages 21-31

  • Receive Date 16 May 2024
  • Revise Date 10 June 2024
  • Accept Date 18 June 2024
  • Publish Date 01 May 2024