• Journal of the Korean Wood Science and Technology
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• 제45권1호
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• pp.28-35
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• 2017

본 연구에서는 접합부가 접착제로 일체화된 강절형 기둥-보 접합 시험편과 슬릿 가공한 보부재에 기둥부재와 일체화된 목질접합물을 삽입하고 핀으로 접합한 시험편을 제작하여 모멘트 저항성능을 검토하였다. 목질접합물은 GFRP로 보강한 적층판을 제작하여 사용하였다. 슬릿 가공된 보부재에 GFRP보강적층판을 삽입하고 핀으로 접합된 기둥-보 시험편들은 완전탄소성 모델 분석으로 산출된 특성치들이 대조군인 강판삽입형 기둥-보 시험편보다 20~80% 낮게 측정 되었다. 기둥부재와 보부재가 접착제로 일체화된 강절형 기둥-보 시험편은 초기잔류변형이 거의 관찰되지 않았으며, 강판 삽입형 접합부보다 38% 향상된 초기강성과 41% 향상된 소성률이 측정되었다.

• Journal of the Korean Wood Science and Technology
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• 제45권5호
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• pp.535-543
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• 2017

목구조물 기둥-보 접합물로는 슬릿 가공된 부재에 강판을 삽입한 형상이 통용되고 있다. 본 연구에서는 접합부가 접착된 강절형 문형라멘프레임 및 강판 대용인 목질접합물을 제작하여 절반은 기둥부재에 일체화하고 나머지 절반은 보부재와 핀으로 접합한 반강절형 문형라멘프레임을 제작하였다. 목질 문형라멘프레임들은 강판삽입형 접합부 문형라멘프레임과 수평내력성능을 비교 분석하였다. 수평내력성능은 완전탄소성모델 분석과 구간별 강성변화율 및 단기허용전단내력으로 평가하였다. 실험결과, 강절형 문형라멘프레임의 최대내력이 강판삽입형 접합부 문형라멘프레임 보다 낮게 측정되어 항복 내력은 0.58, 종국내력은 0.48로 산출되었으나, 초기강성과 소성률은 각각 1.35, 1.1 향상된 값이 측정되었다. 반강절형 문형라멘프레임의 완전탄소성모델 분석 결과 최대내력은 강절형 문형라멘프레임보다 낮았으나 파괴 후 인성이 우수하여 종국내력은 1.05~1.07 높은 값이 산출되었다. 강판삽입형 문형라멘프레임은 반복 시험이 진행됨에 따라 강성이 급격히 감소한 반면 접합부가 목질로된 문형라멘프레임들의 강성은 서서히 감소되었다.

• 한국구조물진단유지관리공학회 논문집
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• 제23권4호
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• pp.8-14
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• 2019

한국 전통 목조 건축물의 경우 구조적 성능은 재료 특성, 접합부의 형태, 치목의 정밀도 등에 따라 다르게 나타난다. 기존 사례 연구에서도 보와 기둥 접합부 형태는 변형 및 간격의 정도에 큰 영향을 미친다는 것을 보고하고 있다. 이는 단층 건물뿐만 아니라 대규모 다층 건물의 경우에도 마찬가지로 나타나고 있다. 따라서 본 연구에서는 접합부 형태에 대해 분석하고 모형을 제작하고 구조적 성능을 테스트하는 과정을 거쳤다. 그 결과, 주먹장맞춤의 실험체에서 최대 하중을 나타냈다. 각각의 형태의 접합부에 의한 구조적 성능을 종합하면, 도래걷이 주먹장맞춤이 가장 높은 성능을 나타내었으며, 다음으로 도래걷이 장부맞춤의 순으로 나타났다. 건물의 구조적 성능은 관통하는 보의 치목 형태와 기둥 내부의 접합부 형테에 따라 다르게 나타남을 알 수 있었으며, 이는 다층 건물의 신축 또는 복원을 위해 고려되어야하며 이후 계속 연구되어야 할것으로 사료된다.

• 건축역사연구
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• 제18권1호
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• pp.7-29
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• 2009

In understranding the essence of the Korea traditional Architecture, it is important to consider the jointing methods of architectural members, architectural technologies, etc. Especially the purpose of this study is understanding on the Jointing Method of Wooden Members in the period of Unified Silla Architecture. It's conclusion is summarized as follows. 1. A section of column has very close to do with the foundation stone. The structures of foundation stone and column are generally concluded by butt joint, arrow-head joint, housed joint by Grang-e method. Judu is structured by arrow-head joint And, in general, beam is structured by Sagaematchum Chumcha and sagaljudu of Don direction. At the head of Pyungju and the body of Goju, Changbang is structed by Jangbumachum with arrow-head joint or by jumukchang-machum. Also, it is surmised that Gyisoseum and Anssolim methods had been applied to columns from former ages. The example can be found at Bagjae Mireuksaji stone pagoda. Bagjae Mireuksaji stone pagoda taking wooden-pagoda form adopts Gyisoseum and Anssolim methods. We can also find such a sort of methods from other stone constructions like Budo, etc. 2. Injahwaban is structured by short Changbumachum with arrowed-head joint at upper members, and by Anjangmachum at the lower part. This sort of Gongpo style can be seen in the mural painting of tomb of Koguryo and in Buplyungsa, Buplyunsa, Bupkisa-located in Japan, which are influenced by Bakjae or Unified Silla. It is considered that at the end of the late United Silla, Injawhaban had been replaced with Chumcha and Soro on the Pyungbang under influence of Dapo style from China.

• Journal of the Korean Wood Science and Technology
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• 제42권3호
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• pp.282-289
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• 2014

합판과 유리섬유강화플라스틱을 조합하여 적층 후 $1.96N/mm^2$의 압력으로 $150^{\circ}C$에서 1시간 고밀화시킨 유리섬유 강화플라스틱 적층판을 제작하였다. 제작된 5가지의 유리섬유강화플라스틱 적층판을 각각 기둥재와 접하는 집성재에 부착하여 부분보강보부재를 제작하였다. 더불어 합판과 시트형 유리섬유강화플라스틱을 적층한 보강적층목재핀과 유리섬유로 보강한 원통형 단판적층기둥재로 기둥-보 접합부를 제작하였다. 기준시험편으로는 원주목과 집성재로 제작한 보부재, 드리프트핀을 사용한 접합부를 제작하여 모멘트 저항 내력을 평가하였다. 시험결과 기준시험편과 비교하여 부분보강보부재를 사용한 시험체들이 평균 1.8배 높은 내력성능이 측정되었다. 모든 부분보강보부재와 원통형 단판적층기둥재에는 파단이 발생하지 않았으며 접합부의 인성과 강성이 모두 양호하게 측정되었다. 부분보강보부재의 보강효과는 시트형 유리섬유강화플라스틱이 직물형 유리섬유강화플라스틱으로 보강한 적층판보다 양호한 보강효과를 보였으며, 시트형 유리섬유강화플라스틱을 각층에 삽입한 적층판이 접합내력과 변형각 모두 양호하여 보부재의 부분보강에 적합한 것을 확인하였다.

• 국제초고층학회논문집
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• 제9권3호
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• pp.221-233
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• 2020

Based on past experiences of natural disasters and fires in Japan, it is stipulated by law that fire-resistant buildings larger than a certain size should be unique in the world. Recent interest in global environmental issues has led to the active introduction of wooden buildings also in Japan, and it is expected that wooden buildings will become larger and higher in size. This paper introduces the background of the development of fire-resistant laminated timber with a "Self-Charring-Stop layer", the contents of this development including other related developments, and the application of these technologies. In addition, towards the realization of much larger and higher buildings in the future, the current problems and issues to be solved are set and the necessity of the future technological development is described. Finally, a conceptual model of wooden high-rise building is proposed, which will be able to be constructed in 2025 by the further technological development.

• Journal of the Korean Wood Science and Technology
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• 제23권3호
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• pp.8-15
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• 1995

This analytical study was carried out to make quality and productivity up in designing the frame-type furniture with semi-rigid joint by understanding the mechanical and structural behavior of the joint and by evaluating the validity of application of the time-saving Finite Element Method to its structural analysis. Slope deflection equation for rigid joint was modified to describe the moment-rotation behavior of semi-rigid joint and the joint stiffness factor(Z) could be calculated to lessen the experimental expense. It was proved that Finite Element Analysis with imaginary elements having equivalent MOE to the semi-rigid joint could be the alternative method for the structural analysis of the frame-type furniture, comparing the internal rotation of the 2-dimensional beam-to-column model with two-pin(wooden dowel) from the finite element method with other available theoretical and experimental rotation value.

• Journal of the Korean Wood Science and Technology
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• 제42권5호
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• pp.571-578
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• 2014

As a way of developing wooden joint development, a glass fiber reinforced wood plate was manufactured to replace a steel plate. Also, the fracture toughness was evaluated. Through application to a cantilever-type specimen made of a column and a beam, the moment resistance performance was evaluated. For the fracture toughness specimen of the wood plate, 12 types were manufactured by varying the combination of a main member (veneer and plywood) and reinforcement (glass fiber sheet and glass fiber cloth). The results of the fracture toughness test indicated that the 5% yield load of the specimen using plywood was 18% higher than that of the specimen using veneer, and that the specimen reinforced by inserting glass fiber sheets between testing materials (Type-3-PS) had the highest average 5% yield load 4841 N. Thus, a moment resistance strength test was performed by applying Type-3-PS to a column-beam joint. The results of the test indicated that compared to the specimen using a steel plate and a drift pin (Type-A), the maximum moment ratio of the specimen using a glass fiber reinforced wood plate (Type-3-PS) and a drift pin (Type-B) was 0.79; and that a rupture occurred in the wood plate due to high stiffness of the drift pin. The maximum moment ratio of the specimen using a glass fiber reinforced wood plate (Type-3-PS) and a glass fiber reinforced wooden laminated pin (Type-C) was 0.67, which showed low performance. However, unlike Type-A, a ductile fracture occurred on Type-C, and the load gradually decreased even after the maximum moment.

• 한국공간구조학회논문집
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• 제19권1호
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• pp.37-44
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• 2019

Yangjindang house, which is located in Sang-ju province of South Korea, is one of the special Hanok structures dated back to Joseon dynasty. This study aims to examine structural safety of the Yangjindang wood frame building considering dynamic parameters such as the natural frequency and damping ratio. The numerical model of the wood frame building is implemented using Midas Gen, especially the wood joint where column and beam were connected. The behavior of the actual frame building was compared with the modeling results. In addition, structure responses such as shear force, axial force, flexural moment and deflections were calculated and compared with the allowable limits. Numerical results show that, generally, despite of some local members shear failure, Yangjindang's structural response does not exceed the limitation according to current standards.