A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Earthquake response of GFRP-reinforced concrete squat walls with aspect ratios of 1.14 and 0.68
Highlights Results from six large-scale pseudo-static tests on GFRP-RC squat walls are presented. The effects of aspect ratio and web reinforcement amount on different behavioral aspects are discussed. Code-based methods for shear strength and stiffness are assessed. The contribution of different response mechanisms to the wall lateral deformation is evaluated.
Abstract This paper investigates the effect of aspect ratio (αs) and web reinforcement amount on the behavior of squat concrete walls entirely reinforced with glass fiber-reinforced polymer (GFRP) bars and spirals. Pseudo-static, reversed-cyclic lateral load behavior of six large-scale wall specimens—three with an aspect ratio of 1.14 and three with 0.68, detailed with different amounts of web reinforcement—are compared. The specimens were designed and detailed according to CSA S806-12, CSA A23.3-14, and ACI 318-19, where applicable, which resulted in wall segments with 150 mm thickness, 1400 mm length, and either 1600 mm or 950 mm height (for αs = 1.14 and 0.68, respectively). The results show that: 1) GFRP-reinforced concrete squat walls are able to achieve their peak lateral strength with a stable hysteretic response, characterized by negligible shear pinching and no strength degradation up failure; 2) the relative effectiveness of horizontal and vertical web reinforcements in resisting shear is a function of the wall aspect ratio; 3) increasing the web reinforcement amount (horizontal/vertical) substantially decrease the shear crack widths as well as the shear-induced deformations; 4) the fundamental period of GFRP-reinforced concrete squat walls can reach 2-to-3 times its original value prior to failure; and 5) until the development of new design provisions, the strut-and-tie calculations in CSA S806-12 and ACI 318-19 can be applied to GFRP-reinforced concrete squat walls.
Earthquake response of GFRP-reinforced concrete squat walls with aspect ratios of 1.14 and 0.68
Highlights Results from six large-scale pseudo-static tests on GFRP-RC squat walls are presented. The effects of aspect ratio and web reinforcement amount on different behavioral aspects are discussed. Code-based methods for shear strength and stiffness are assessed. The contribution of different response mechanisms to the wall lateral deformation is evaluated.
Abstract This paper investigates the effect of aspect ratio (αs) and web reinforcement amount on the behavior of squat concrete walls entirely reinforced with glass fiber-reinforced polymer (GFRP) bars and spirals. Pseudo-static, reversed-cyclic lateral load behavior of six large-scale wall specimens—three with an aspect ratio of 1.14 and three with 0.68, detailed with different amounts of web reinforcement—are compared. The specimens were designed and detailed according to CSA S806-12, CSA A23.3-14, and ACI 318-19, where applicable, which resulted in wall segments with 150 mm thickness, 1400 mm length, and either 1600 mm or 950 mm height (for αs = 1.14 and 0.68, respectively). The results show that: 1) GFRP-reinforced concrete squat walls are able to achieve their peak lateral strength with a stable hysteretic response, characterized by negligible shear pinching and no strength degradation up failure; 2) the relative effectiveness of horizontal and vertical web reinforcements in resisting shear is a function of the wall aspect ratio; 3) increasing the web reinforcement amount (horizontal/vertical) substantially decrease the shear crack widths as well as the shear-induced deformations; 4) the fundamental period of GFRP-reinforced concrete squat walls can reach 2-to-3 times its original value prior to failure; and 5) until the development of new design provisions, the strut-and-tie calculations in CSA S806-12 and ACI 318-19 can be applied to GFRP-reinforced concrete squat walls.
Earthquake response of GFRP-reinforced concrete squat walls with aspect ratios of 1.14 and 0.68
Shabana, Islam (author) / Farghaly, Ahmed Sabry (author) / Benmokrane, Brahim (author)
Engineering Structures ; 252
2021-11-02
Article (Journal)
Electronic Resource
English
Experimental Behavior of GFRP-Reinforced Concrete Squat Walls Subjected to Simulated Earthquake Load
| British Library Online Contents | 2018
Prediction of Flexural and Shear Strength of Concrete Squat Walls Reinforced with GFRP Bars
| British Library Online Contents | 2018
Earthquake-Resistant Squat Walls Reinforced with High-Strength Steel
| British Library Online Contents | 2016