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

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Barkhordari Mohammad Sadegh; Tehranizadeh Mohsen

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Journal Paper

Paper Information

Journal: Journal of Seismology and Earthquake Engineering Year:2024 | Volume:26 | Issue:2 Page(s): 21-31

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Information Journal Paper

Title

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

Author(s)

Barkhordari Mohammad Sadegh | Tehranizadeh Mohsen | Issue Writer Certificate

Keywords

Shear–Flexure Interaction

Concrete Shear Walls

Seismic Collapse Analysis

FEMA P695

OpenSees

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.

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