참고문헌
- 이종중, 손창석, 박영환. 시뮬레이션을 통한 1500MPa급 강재의 저항 용접 특성. 대한용접접학학회. 2018. 제36권 3호. p. 51-56.
- 홍성욱, 김승훈, 백기열. 접합 방법에 따른 하지철물 구조물의 거동에 관한 실험적 연구. 한국구조물진단유지관리공학회. 2018. 제 22권 1호. p. 190-198.
In the case of steel door frames commonly found in general buildings, there are various assembly methods such as rivets, bolts, and welding, but the welding method is generally used. However, this welding joint method has many problems, such as distortion due to heat and damage due to external shock. In particular, when used as a fire door, problems may occur in the event of a fire due to distortion caused by heat from welding and the weak welded joint area. In the case of rivet or welded joints, when moved after assembly, joint loosening due to external shock may occur. Problems may arise where the bonding strength becomes weak. In addition, with the recent increase in high-rise buildings and larger buildings, when assembly is completed and brought to the site, a place is needed to store it, and in addition, there is a problem in that it has to be transported several times in small quantities to the installation site, which is another problem of time and cost loss. This is coming to the fore. In order to fundamentally solve this problem, we have researched and developed a non-welding door frame that can be assembled on site. We have researched and developed three assembly methods: screw-type, insert-type, and protrusion-type. Non-welded door frames are small in size and easy to package, making them advantageous for domestic and overseas exports.