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Title |
Experimental and Analytical Evaluation of Seismic Performance of PC Wide Beam-Column Connections with Dry Panel Zone
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Authors |
문정호(Jeong-Ho Moon) ; 오영훈(Young-Hun Oh) ; 이강철(Gang-Chul Lee) ; 이창현(Chang-Hyun Lee) ; 박현석(Hyun-Suk Park) |
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DOI |
https://doi.org/10.4334/JKCI.2024.36.2.145 |
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Keywords |
프리캐스트 콘크리트; 광폭보-기둥; 판넬존; 건식접합; 하부철근 관통 precast concrete; wide beam-column; pannel zone; dry connection; bottom rebar penetration |
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Abstract |
This work involves an experimental study on WBS-II. WBS-II, aimed at shortening construction periods and achieving cost-efficiency in PC structures, comprises a dry beam-column connection with a wide beam. The main variables examined in the experimental study included the shape of the panel zone, the type and distribution method of girder reinforcement, and the amount of tie reinforcement. Nonlinear analysis was also performed alongside experiments on five specimens categorized into Types A, B, and C. Type A represents a fully dry connection, while Types B and C are partial dry connections, with upper and lower story columns dry-connected, except for the space reserved for column penetration of the bottom reinforcements of the partial dry type girder. Types B and C had variations in the type of girder bottom rebar, with additional consideration given to the amount of panel zone ties as an experimental variable. The findings revealed that the WBS-II frame system showed performance that satisfies the requirements for intermediate moment resisting frames in seismic design criteria. It was observed that adopting a partial dry connection, where the bottom reinforcements of the girder penetrate the column, is preferable to achieve unity between columns and beams. In addition, it was concluded that it is better to use lower-strength rebars than high yield-strength rebars to prevent excessive adhesion stress in the panel zone.
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