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황종국,권양희,배동훈 대한건축학회 2019 大韓建築學會論文集 : 構造系 Vol.35 No.2
The purpose of this study was to estimate the resistance capacity of a traditional wooden house with shear walls made of wood panel. In order to achieve the purpose of the study, the load - displacement test was carried out and the resistance moment values of the shear walls were proposed. The shear walls were made by placing studs with a nominal dimension of 38 mm × 89 mm at intervals of 600 mm, and attaching 12 mm thick plywood with 8-d size pegs at intervals of 150 mm. The type of traditional building wall was classified and showed the moment resistance ability of each wall type. This value is expressed as a proportional value divided by the moment resisting capacity of the standard size shear walls not divided into the divided small frames. Although some frames have proportional values larger than 1.0 even though they have openings, most of them show values smaller than 1.0. Also, even without the openings, it showed a smaller value than 1, such as 0.84 and 0.67. 본 연구의 목적은 판재로 만들어진 전단벽이 설치된 전통목조주택이 지진과 바람 하중에 저항할 수 있는 능력의 크기를 판단하기 위한 것이었다. 연구목적을 달성하기 위해서 하중-변위실험을 수행하였다. 그리고 전단벽의 저항모멘트 값이 제시되었다. 전단벽은 공칭치수 38mm×89mm의 단면을 가진 스터드를 600mm 간격으로 배치하고 12mm 두께 합판을 8d 크기의 못으로 150mm 간격으로 박아서 만들었다. 전통건축물 벽체유형을 구분하였으며, 각 벽체유형이 가지는 모멘트저항능력을 나타내었다. 이 값을 세부목골조로 분할되지 않은 표준크기 전단벽의 모멘트저항능력으로 나누어 비례값으로 표현하였다. 일부 골조에서 개구부가 있음에도 1보다 큰 비례값을 나타내었만, 대부분은 1.0보다 작은 값을 보여주었다. 또한 개구부가 없는 경우에도 0.84, 0.67과 같이 1보다 작은 비례값을 보여주었다.
중앙아시아벽화 보존처리(2) : 벽화의 채색 안료 및 벽체 조성에 사용된 초재류 조사
이용희,유혜선,김수철,강형태,조연태,시게오 아오키,켄타로 오바야시 국립중앙박물관 2003 박물관보존과학 Vol.4 No.-
용산 새 박물관에 전시될 중앙아시아 벽화의 보존처리를 위해 이들 벽화의 채색안료 성분분석과 벽체에 포함된 지푸라기의 식물종 식별을 위한 조사를 실시하였다. 또한 1916년 우리 박물관에 반입되기 이전에 일본에서 시행된 보존처리 재료 및 방법을 검토하기 위하여 나무 보호틀의 목재수종 및 종이의 재질을 분석하였다. 조사결과 본4075, 4078의 검은색 안료는 carbon(C), 바탕의 흰색은 gypsum[Ca(SO₄)(H₂O)₂], 적색 계통은 lead oxide(Pb₃O₄, PbO)와 hematite(Fe₂O₃), 녹색은 Cu, As, O 화합물 등을 채색 안료로 사용하였다. 또한 벽체를 조성할 때 흙벽이 갈라지는 것을 방지하기 위해 섞어 넣은 지푸라기는 밀짚 또는 귀리짚 종류인 것으로 조사되었다. 또한 현재 벽화를 둘러싸고 있는 나무 보호틀은 버드나무속, 사시나무속, 삼나무, 그리고 소나무 중 적송류로 만들어진 것으로 밝혀졌으며 벽화(본4054, 4097)의 보호를 내부에서 발견된 종이는 뽕나무 껍질로 만든 것으로 조사되었다. For the conservation treatment of the Central Asia mural painting which is to be exhibited in the new museum in Yongsan, we analyzed the pigments used in this mural painting and examined to identify the species of the straw in the wall. We also analyzed the species of the wood of the wooden protective frame and the material of the paper in it, in order to review the material and technique of the conservation treatment performed before the mural painting had been brought to the National Museum of Korea in 1916. The results were as follows: the black pigments of Bon4075 and Bon4078 is carbon(C); the white pigment on the background is gypsum[Ca(SO₄)(H₂O)₂]; the red pigment is lead oxide(Pb₃O₄) and hematite(Fe₂O₃) etc. The straw, which had been mixed into the wall to prevent the wall from cracking, was proved to be either wheat straw or oats straw. The wooden protective frame, which protects the mural painting now, was proved to be made of Salix, Populus, Cryptomeria japonica and pine. The paper discovered in the frame was proved to be made of the bark of a mulberry.
RC 경계골조를 설치한 신축 비보강 조적벽체의 내진성능 평가
유영찬(You, Young-Chan),김민선(Kim, Min-Sun),이현지(Lee, Hyun-Jee) 대한건축학회 2018 大韓建築學會論文集 : 構造系 Vol.34 No.11
The purpose of this study is to examine the effects of boundary RC frame(composed of one tie-beam and two tie-columns) on seismic performance of unreinforced masonry walls to suggest alternative way for seismic design of unreinforced masonry wall structures. Two test specimens are prepared, one is a typical unreinforced masonry wall and another is alternative unreinforced masonry wall with additional boundary RC frame. The structural experiments were carried out to evaluate the difference of seismic resistance performance between two test specimens with or without the boundary RC frames. From the test results, it was found that the failure mode of unreinforced masonry wall fundamentally changed from ‘brittle’ to ‘ductile’ by the installing of boundary RC frames. And, the maximum load and energy dissipation capacity of the test specimen with boundary RC frame was increased about 1.6~1.7 and 2~3 times respectively compared with a typical unreinforced masonry wall specimen.
황종국(Hwang, Jong-Kook),권양희(Kwon, Yang-Hee),배동훈(Bae, Dong-Hun) 대한건축학회 2019 大韓建築學會論文集 : 構造系 Vol.35 No.3
The purpose of this study was to estimate the resistance capacity of a traditional wooden house with shear walls made of wood panel. In order to achieve the purpose of the study, the load - displacement test was carried out and the resistance moment values of the shear walls were proposed. The shear walls were made by placing studs with a nominal dimension of 38 ㎜ × 89 ㎜ at intervals of 600 ㎜, and attaching 12 ㎜ thick plywood with 8-d size pegs at intervals of 150 ㎜. The type of traditional building wall was classified and showed the moment resistance ability of each wall type. This value is expressed as a proportional value divided by the moment resisting capacity of the standard size shear walls not divided into the divided small frames. Although some frames have proportional values larger than 1.0 even though they have openings, most of them show values smaller than 1.0. Also, even without the openings, it showed a smaller value than 1, such as 0.84 and 0.67.
철근콘크리트 골조에 내장된 무보강 조적채움벽체의 잔류균열폭과 잔류변형의 상관관계
최호(Choi Ho) 대한건축학회 2009 大韓建築學會論文集 : 構造系 Vol.25 No.7
After an earthquake, the major concerns to damaged buildings are their safety/risk to aftershocks, quantitative damage assessment to evaluate their residual seismic capacity and to identify necessary actions on the damaged buildings. Few investigations on unreinforced masonry infills, however, have been made to quantitatively identify their damage level and criteria to judge necessary actions for their continued use, repair and rehabilitation although their damage has been often found in the past damaging earthquakes. In this study, reinforced concrete (RC) frames with unreinforced concrete block (CB) infills for school buildings in Korea are tested under cyclic loadings, and a simplified model is proposed to investigated the relationship between residual crack widths of CB infills and residual deformations of overall frames. Although the measured crack widths of CB infills are much smaller than the residual deformations of RC frames, a simplified model proposed in this study considering flexural and shear deformation distribution of columns can rationally reproduce the measured crack widths. The relationship between crack widths of CB infills and residual deformations of frames is further investigated and their ratios are found to lie approximately in the range of 0.2 to 0.3. This result implies that the residual deformation of frame can be estimated from residual crack width of CB infill.