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Cyclic Behavior of Slender Shear Walls with Ultra High Performance Fiber Reinforcement Concrete Overlays Arifa, Geralda Nurry; Amalia, Aniendhita Rizki; Tajunnisa, Yuyun
Reka Buana : Jurnal Ilmiah Teknik Sipil dan Teknik Kimia Vol 10, No 2 (2025): EDISI SEPTEMBER 2025
Publisher : Universitas Tribhuwana Tunggadewi Malang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33366/rekabuana.v10i2.8126

Abstract

Shear walls serve as the primary structural elements for resisting lateral loads induced by earthquakes; however, slender shear walls remain susceptible to shear failure and buckling, particularly in structures designed according to older design codes. One strengthening technique that has gained increasing attention is the application of Ultra-High Performance Fiber Reinforced Concrete (UHPFRC) overlays, which offer high strength and effective crack control capabilities. This study aims to analyze the cyclic behavior of slender shear walls strengthened with a two-layer UHPFRC overlay with a total thickness of 40 mm using a finite element method based on the Concrete Damage Plasticity (CDP) model implemented in Abaqus. The numerical model is validated using experimental data from conventional reinforced concrete shear walls and UHPFRC-strengthened shear walls by comparing force–displacement responses, hysteresis curves, and tensile damage (Damage) distributions. The validation results indicate that the numerical model accurately captures the structural response, as evidenced by the close agreement in maximum displacement and damage mechanisms, with displacement differences of 2.97% for the conventional shear wall and 0.18% for the UHPFRC-strengthened shear wall. Parametric analysis shows that the UHPFRC overlay significantly increases the maximum load capacity from 328.22 kN to 525.37 kN, enhances the initial stiffness and first-yield capacity, and reduces the maximum displacement from 127.79 mm to 112.50 mm. Furthermore, the UHPFRC-strengthened shear wall exhibits a more stable post-peak response, fuller hysteresis loops, higher energy dissipation capacity, and more localized and gradually developing tensile damage compared to the conventional shear wall. These results demonstrate that a 40 mm-thick two-layer UHPFRC overlay effectively improves the shear capacity, cyclic stability, and seismic resistance of slender shear walls.
Performance Analysis of Corrugated Steel Plate Shear Wall with Geometry Variations Nadiva, Annasia Faza; Suswanto, Budi; Amalia, Aniendhita Rizki
Reka Buana : Jurnal Ilmiah Teknik Sipil dan Teknik Kimia Vol 10, No 2 (2025): EDISI SEPTEMBER 2025
Publisher : Universitas Tribhuwana Tunggadewi Malang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33366/rekabuana.v10i2.8147

Abstract

The use of stiffening elements in steel plate shear wall (SPSW) systems enhances lateral stiffness and energy dissipation capacity; however, it also significantly increases material and labor costs due to the complexity of fabrication and installation. As an alternative, the Corrugated Steel Plate Shear Wall (CoSPSW) system has been proposed as a more efficient and practical solution that maintains sufficient stiffness and strength without requiring additional stiffeners. This study investigates the structural performance of CoSPSWs with varying corrugation geometries using the finite element method. The analysis focuses on the influence of the corrugation angle on the overall structural behavior, including buckling stability, lateral stiffness, ultimate strength, and energy dissipation capacity. Nonlinear finite element simulations were conducted using ABAQUS software to capture the influence of geometric nonlinearities under lateral cyclic loading. The results show that increasing the corrugation angle significantly improves lateral stiffness and energy dissipation capacity, while maintaining stable post-buckling behavior. An optimal corrugation angle of approximately 60° provides the maximum strength and ductility among the specimens. This study contributes to understanding the behavior of corrugated steel shear walls and provides valuable insights for the design of efficient, cost-effective steel structures.