Improvement on Moment Resistance of a Concealed Timber Post Base Joint
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초록
In this paper, experimental results were presented on the moment resistance of a concealed timber post base joint aimed at replacing in a modern design introduced lately the wood to wood joints used in the traditional Korean timber house - Hanok. Preliminary results showed that the original configuration of the joint offers a limited moment resistance and a low ductility and energy dissipation. In an attempt to mitigate those limitations without undergoing major changes in the connector, three new configurations were proposed and investigated. Motivated by the wish to prevent the early failure in welds, a first approach consists in directly bolting the connector's upper plate to lower the stress on the weak welds. Alternatively, another approach focused on increasing the strength of these welds by extending their length to the full width of the metal wings. Finally, a third configuration investigated the effect of those two approaches combined. In conclusion, reinforcing the welds found out to be the best option among the presented ones. As a result, this connector considered to show proper ability for use in earthquake-resistant structures with suited lateral-resistant structural elements.
Abstract
In this paper, experimental results were presented on the moment resistance of a concealed timber post base joint aimed at replacing in a modern design introduced lately the wood to wood joints used in the traditional Korean timber house - Hanok. Preliminary results showed that the original configuration of the joint offers a limited moment resistance and a low ductility and energy dissipation. In an attempt to mitigate those limitations without undergoing major changes in the connector, three new configurations were proposed and investigated. Motivated by the wish to prevent the early failure in welds, a first approach consists in directly bolting the connector's upper plate to lower the stress on the weak welds. Alternatively, another approach focused on increasing the strength of these welds by extending their length to the full width of the metal wings. Finally, a third configuration investigated the effect of those two approaches combined. In conclusion, reinforcing the welds found out to be the best option among the presented ones. As a result, this connector considered to show proper ability for use in earthquake-resistant structures with suited lateral-resistant structural elements.
참고문헌 (8)
- Buchanan, A., "Ductile moment-resisting connections in glulam beams", Proceedings of the NZSEE conference (2001)
- Nakatani, M., "Development of moment- resisting joint systems using lagscrewbolts", Proceedings of the 9 th World Conference on Timber Engineering (2006)
- Komatsu, K., "Glulam Semi-Rigid Portal Frames Composed of Hardwood Wedges and Metal Wares", Proceedings of the 5 th World Conference on Timber Engineering (1998)
- 황권환, "프리컷 방식을 적용한 기둥-보 공법의 수평전단내력", 목재공학, 35(6), pp.1~12 (2007), 한국목재공학회
- Park, M. J., "Shear performance of hybrid post and beam wall system with structural insulation panel infill", Proceedings of the 11th WCTE, pp.465~ (2010)
- Jérôme Humbert, "Cyclic Behavior of Timber Column Concealed Base Joint", 목재공학, 41(2), pp.123~133 (2013), 한국목재공학회
- International Organization for Standardization, "ISO 16670 : Timber Structures — Joints made with mechanical fasteners — Quasi-static reversed-cyclic test method", ~ (2003)
- Architectural Institute of Japan, "New estimation method for shear wall performance", Standard for Structural Design of Timber Structure, 104~ (2002)