초록

- 국산 소경 간벌재를 제재, 건조 및 대패마감하여 소경각재를 생산
- 소경각재와 대경각재 및 구조용 집성재용 층재를 적절하게 혼합 배치하여 다중접착접합부재를 제조
- 소경각재만을 사용한 다중접착접합 기둥부재보다 압축강도 30% 이상 향상
- 소경각재만을 사용한 다중접착접합 보부재보다 휨강도 20% 이상 향상
- 다중접착접합부재 기둥-보 사이에 다양한 철물접합부 개발 및 성능 평가
- 철근삽입접합부의 전단강도 및 모멘트저항성능이 다른 철물접합부보다 월등하게 높음을 확인

Abstract ▼

This research has been performed to use domestic small logs for value-added products and usage such as multi-layer glued members used as structural members for heavy timber structures rather than using them for low-value products such as chips, pallets and fire wood. The multi-layer glued members ma

This research has been performed to use domestic small logs for value-added products and usage such as multi-layer glued members used as structural members for heavy timber structures rather than using them for low-value products such as chips, pallets and fire wood. The multi-layer glued members manufactured using small square timbers produced from small logs were developed from the previous research. However, the small square timbers contain too much juvenile wood, which make the multi-layer glued members weak in terms of strength. In this research, large square timbers and laminations for structural glulam were combined with small square timbers to increase the compressive strength of the multi-layer glued column members and the bending strength of the multi-layer glued beam members.

As the results of the researches, the methods to increase the compressive strength of the multi-layer glued column members more than 30% and the bending strength of the multi-layer glued beam members were developed. And various type of connections were developed and tested to verify their shear strength and their moment-resistance. The connections using bolts, lags crews, cross steel plates together with tenon joint were developed. Also the glued-in rod connections using steel bar and epoxy adhesives were developed. The glued-in rod connections showed very high shear strength and moment-resistance compared with the other types of connections developed in this study.

Especially, the glued-in rod connections showed very high moment-resistance which were more than 5 times higher than those of the other types of connections. Therefore, the behavior of the glued-in rod connections were very close to the rigid connections and it was thought that the glued-in rod connections can be used as itself to form the lateral-force-resistance-system without additional structural reinforcement.

The results of this research can be used to design the heavy timber structures, especially, the Korean-style houses and to supply structural members for construction of Korean-style houses

목차 Contents

• 표 지 ... 1
• 제 출 문 ... 3
• 보고서 요약서 ... 5
• 요 약 문 ... 7
• SUMMARY ... 10
• 목 차 ... 13
• 제1장 연구개발과제의 개요 ... 15
• 제2장 국내외 기술개발 현황 ... 17
• 제3장 연구개발수행 내용 및 결과 ... 18
• 제 1절 1차년도 연구과제: 다중접착접합 기둥의 성능 개선 ... 18
• 1. 연구내용 및 범위 ... 18
• 2. 시험재료 ... 18
• 3. 시험방법 ... 22
• 4. 결과 및 고찰 ... 27
• 5. 결론 ... 58
• 제 2절 2차년도 연구과제: 다중접착접합 보의 성능 개선 ... 60
• 1. 연구내용 및 범위 ... 60
• 2. 시험재료 ... 60
• 3. 시험방법 ... 64
• 4. 결과 및 고찰 ... 69
• 5. 결론 ... 100
• 제 3절 3차년도 연구과제: 다중접착접합부재 기둥-보 철물접합부의 개발 및 성능 평가 ... 102
• 1. 연구내용 및 범위 ... 102
• 2. 시험재료 ... 103
• 3. 시험방법 ... 118
• 4. 결과 및 고찰 ... 124
• 5. 결론 ... 143
• 제4장 목표달성도 및 관련분야에의 기여도 ... 145
• 제5장 연구개발결과의 활용계획 ... 147
• 제6장 연구개발과정에서 수집한 해외과학기술정보 ... 149
• 제7장 연구시설·장비 현황 ... 150
• 제8장 참고문헌 ... 151
• 끝페이지 ... 152