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http://dx.doi.org/10.9712/KASS.2022.22.4.81

Development and Shear Performance Evaluation of Vertical Joints between Precast Concrete Walls  

Moon, Kyo Young (Department of Architectural Engineering, Keimyung University)
Kim, Sung Jig (Department of Architectural Engineering, Keimyung University)
Lee, Kihak (Department of Architectural Engineering, Sejong University)
Kim, Yong Nam (Mirae Structural Engineering.co., Ltd)
Publication Information
Journal of Korean Association for Spatial Structures / v.22, no.4, 2022 , pp. 81-88 More about this Journal
Abstract
The paper introduces an experimental program for the newly developed vertical joints between Precast Concrete (PC) walls to improve their in-plane shear capacity. Compared to the existing vertical joints, two types of vertical joints were developed by increasing the transverse reinforcement ratio and improving frictional force at the joint interface. A total of four specimens including the Reinforced Concrete (RC) wall and PC walls with developed vertical joints were designed and constructed. The constructed specimens were experimentally investigated through monotonic shear tests. The observed damage, load-deformation relationship, strain and strength are investigated and compared with the cases of RC wall specimen. Experimental results indicate that the maximum force and initial stiffness of the PC wall with proposed vertical joints were decreased by comparing with those of RC wall. However, the ultimate displacement increased by up to 217.30% compared to the RC wall specimen. In addition, brittle failure did not occurred and relatively few cracks and damages occurred.
Keywords
Precast concrete wall; Vertical joint; Wet joint; Shear strength;
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