In this study, we will develop a hybrid cross-sectional shape of steel inserted type glued-laminated timber that can improve the strength of structural glued-laminated timber and maximize the ductility by using steel plate with excellent tensile and deformation ability. A total of three specimens were fabricated and the flexural performance test was carried out to evaluate the structural performance of the steel inserted type glued-laminated timber. In order to compare the effect of steel inserted glued-laminated timber, one structural glued-laminated timber test specimen composed of pure wood was manufactured. In addition, in order to evaluate the adhesion performance of the steel inserted, one each of a screw joint test specimen and a polyurethane joint test specimen was prepared. As a result, all the specimens showed the initial crack in the finger joint near the force point. This has been shown to be a cause of crack diffusion and strength degradation. The use of finger joints in the maximum moment section is considered to affect the strength and ductility of the glued-laminated timber beam. Polyurethane-adhesive steel inserted glued-laminated timber showed fully-composite behavior with little horizontal separation between the steel plate and glued-laminated timber until the maximum load was reached. This method has been shown to exhibit sufficient retention bending performance.

Abstract
1. 서론
2. 강판 매입 집성재의 단면 성능 검토
    2.1 설계 기본 가정 및 재료 강도
    2.2 복합 단면 중립축 및 단면2차모멘트 산정
    2.3 항복 모멘트 산정
    2.4 수평 전단력 산정
    2.5 접합 나사 개수 및 간격 산정
    2.6 강판-목재 간 접착제 부착 강도 산정
3. 구조 성능 실험
    3.1 실험체 계획 및 제작
    3.2 가력 및 측정 방법
    3.3 실험 결과
    3.4 실험 결과 분석 및 고찰
4. 결론
References

• 박금성(한국건설기술연구원) | Park Keum-Sung (Korea Institute of Civil Engineering and Building Technology) 교신저자
• 이상섭(한국건설기술연구원) | Lee Sang-Sup (Korea Institute of Civil Engineering and Building Technology)
• 곽명근(한국건설기술연구원) | Kwak Myong-Keun (Korea Institute of Civil Engineering and Building Technology)