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Earthquakes and Structures Volume 29, Number 4, October 2025 , pages 311-329 DOI: https://doi.org/10.12989/eas.2025.29.4.311 |
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 open accessExperimental investigation on in-plane structural performance of half-PC slab-wall joints with various reinforcing details |
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Jae Hyun Kim, Sun-Jin Han, Cha-Young Yun, Hoseong Jeong, Min-Kook Park and Kang Su Kim
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| Abstract | ||
| In this study, quasi-static cyclic loading tests were conducted to evaluate the in-plane structural performance of half-precast concrete slab-wall joints. Nine full-scale specimens were fabricated, with key test variables that include the system type, anchorage type, number of anchorage reinforcements, and slab type. The structural performance was assessed in terms of the lateral load-displacement behavior, maximum load capacity, stiffness retention ability, and energy dissipation capacity. The results showed that the monolithic reinforced concrete specimens exhibited superior performance compared to the half-precast concrete specimens. However, the half-precast concrete specimens exceeded the nominal shear strength requirements specified in ACI 318-19. Among the half-precast concrete specimens, the anchorage type and slab type had negligible effects on the overall performance, whereas an increase in the number of anchorage reinforcements unexpectedly resulted in degraded performance. Analysis of the local shear strength of the anchorage reinforcements revealed that those in the half-precast concrete specimens failed to achieve the intended shear capacity, primarily because of insufficient development length. Based on these findings, a modified nominal shear strength model incorporating the anchorage development length was proposed. | ||
| Key Words | ||
| cyclic loading test; in-plane structural behavior; precast concrete; reinforced concrete; slab-wall joint; structural performance | ||
| Address | ||
| Jae Hyun Kim, Cha-Young Yun, Hoseong Jeong and Min-Kook Park: Department of Architectural Engineering, University of Seoul, 163 Siripdae-ro, Dongdaemun-gu, Seoul 02504, Korea Sun-Jin Han: Department of Architectural Engineering, Jeonju University, 303 Cheonjam-ro, Wansan-gu, Jeonju-si, Jeonbuk-do 55069, Korea Kang Su Kim: Department of Architectural Engineering and the Smart City Interdisciplinary Major Program, University of Seoul, 163 Siripdae-ro, Dongdaemun-gu, Seoul 02504, Korea | ||