|
Title |
Evaluation of Shear Strength in Precast Concrete (PC) Wall Vertical Joints: Effect of Horizontal Reinforcement
|
|
Authors |
이진희(Jin-Hui Lee) ; 우진석(Jin-Seok Woo) ; 윤현도(Hyun-Do Yun) ; 박완신(Wan-Shin Park) ; 김선우(Sun-Woo Kim) ; 서수연(Soo-Yeon Seo) |
|
DOI |
https://doi.org/10.4334/JKCI.2026.38.2.239 |
|
Keywords |
프리캐스트 콘크리트 벽체; 수직 접합부; 전단마찰 이론; 전단 성능 평가; 수평 철근 기여분 precast concrete walls; vertical joints; shear friction concept; shear strength evaluation; horizontal reinforcement contribution |
|
Abstract |
The shear strength of precast concrete (PC) wall vertical joints depends on various factors, including horizontal reinforcement, shear keys, and joint configuration. However, current design codes do not sufficiently reflect the combined influence of these variables, resulting in significant discrepancies between predicted and observed shear capacity. To address this limitation, this study evaluated the effects of horizontal reinforcement based on the shear friction concept by comparing shear strength predictions from five major design standards?KDS 41, ACI 318, Eurocode 2, fib Model Code 2010, and CSA A23.3?with experimental results reported in available literature. The results indicated that ACI 318 provides predictions that most closely align with experimental results, while Eurocode 2 and fib Model Code 2010 tend to underestimate shear capacity. In contrast, KDS 41 and CSA A23.3 generally overestimate shear strength and do not effectively account for the influence of horizontal reinforcement. Based on the observed flexural behavior and non-yielding characteristics of horizontal bars, a refined reinforcement contribution model is proposed, offering improved reliability in predicting the shear strength of PC wall vertical joints.
|