| Title |
In-Plane Seismic Performance of PC Diaphragm Subjected to Shear and Flexural Moment |
| Authors |
김선훈(Kim, Seon-Hoon) ; 김민수(Kim, Min-Su) ; 진승현(Jin, Seung-Hyun) ; 이득행(Lee, Deuckhang) |
| DOI |
https://doi.org/10.5659/JAIK.2025.41.4.265 |
| Keywords |
Precast Concrete; In-plane Behavior; Seismic Performance; Diaphragm; Connection Details |
| Abstract |
This study examines the in-plane cyclic response of various precast diaphragms in residential buildings. Seismic testing was conducted on precast concrete (PC) slab-to-slab connections using seismic details commonly applied in practice. The connection details include wet and dry joints: the wet joint is a method where topping concrete is cast on the PC slab, while the dry joint utilizes bolt-type shear connectors. All specimens demonstrated code-compliant seismic performance in terms of shear strength, failure mode, and deformation capacity. A quantitative evaluation, including strain variations in slab reinforcements, slab interface slip, opening, and shear deformation, indicates that excellent composite action can be achieved with both wet and dry joints when proper anchorage is ensured. Additionally, an evaluation of the seismic performance of precast diaphragms based on ACI 550.4 indicates compliance with the precast diaphragm system requirements specified in ASCE 7-22. |