• 복합신소재구조학회 논문집
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• 제4권1호
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• pp.33-39
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• 2013

Structural insulated panels, structurally performed panels consisting of a plastic insulation bonded between two structural panel facings, are one of emerging products with a viewpoint of its energy and construction efficiencies. These components are applicable to fabricated wood structures. In Korea, there are few technical documents regulated structural performance and engineering criteria in domestic market. This study was conducted to identify fundamental performance of both monotonic load and quasi static cyclic load for SIPs in shear wall application. Static test results showed that maximum load was 44.3kN, allowable shear load was 6.1kN/m, shear stiffness was 1.23 M N/m, and ductility ratio was 3.6. Cyclic test was conducted by two kinds of specimens : single panel and double panels. Cyclic test results, which were equivalent to static test results, showed that maximum load was 45.42kN, allowable shear load was 6.3kN/m. Furthermore the accumulated energy dissipation capability for double panels was as 2.3 times as that for single panel. From performance of structural tests, it was recommended that the allowable shear load for panels was at least 6.1kN/m.

• 한국전산구조공학회논문집
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• 제23권3호
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• pp.247-254
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• 2010

유리섬유강화 폴리에스터(GFRP) 복합소재는 가볍고 내구성이 뛰어나 강재, 콘크리트, 나무 등과 같은 기존의 구조 재료들을 대체할 수 있는 재료로 최근 각광 받고 있다. 이러한 복합소재를 활용하기 위해 쉽게 조립할 수 있는 수직결구식 복합소재 데크를 활용한 아치가교 유형을 선행 연구에서 제안하였고 유한요소해석을 통해 검증하였다. 이 논문에서는 선행연구에서 제안된 볼트결합에 의한 복합소재 데크 조립식 아치가교의 안전성 및 사용성을 구조성능시험을 통해 검증하여 문제점을 파악하고 그 문제점을 해결하기 위해 개선된 아치가교 유형을 제안한다.

• 한국실내디자인학회:학술대회논문집
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• 한국실내디자인학회 2008년도 춘계학술발표대회 논문집
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• pp.155-158
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• 2008

Today, apartment is the primary housing type in Korea. In the past, there were many apartment floor plans in the same design way. There have been changes to complex and luxury plans in these days because people want to fit their own needs and wants to the plans. The primary purpose of this study is to analyze interior design trend of medium-large size apartment after year 2000. For that, this study used 7 different construction companies, 13 apartment complexes and 30 unit plan cases which were on sale from April 2007 to April 2008 in Seoul and the Metropolitan area. The results of analysis are as follows: First, most cases had 4LDK and 2bathroom with a dress-room. Second, characteristics of the interior design showed that the variety finish materials used in the units. For wall finish materials, wallpapers were used in mostly regardless in different areas. For floor finish materials, stone and tile were used in similar ratio in the entrance area whereas wood floor mostly was used in living room and kitchen areas. This study shows some significant characteristics of today's apartment even it has some limitations because of small amount of survey cases. More detailed and deeper study will be done continuously.

• 설비공학논문집
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• 제17권12호
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• pp.1123-1131
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• 2005

The floor material is known as the most influential emission source of the residential building, because most floor material is made of wood compound and adhesive like a plywood flooring. Moreover, floor heating system keeps the inside temperature of the material high. As the emission of hazardous chemical compound from the construction material is influenced by many factors, it is necessary to analyze the emission characteristics of the floor material to improve IAQ. In this study, numerical analysis is performed to investigate the emission characteristics of the floor material affected by several factors such as temperature, air exchange rate, initial concentration, and internal diffusion coefficient. A simulation program is also written based on the mass transfer theory. The simulation results show that there is some level of difference on the TVOC concentration when each of the factors is variable.

• 대한건축학회논문집:구조계
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• 제35권3호
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• pp.11-18
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• 2019

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 $38mm{\times}89mm$ 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.

• 건축역사연구
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• 제29권6호
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• pp.57-65
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• 2020

This study covered the Mulmae, architectural drawing recorded on Yeonggeon-uigwes and Sanleung-uigwes during the late Joseon Dynasty. In uigwes, the term 'Mulmae' was used as a mixture until the 17th century, but from the 18th century, the term 'Mulmae(勿乙每, 勿每, 水每)' was unified into 'Mulmae(水每)'. The paper of the Mulmae was made to be used during the construction period by using a thick oil paper called Yudun. Four Yudun were connected, and its size was 197.4×141cm, which was rather large. The Yingzaofashi(營造法式) of Song Dynasty describes how to draw a longitudinal section on a scale of 1/10. The scale of 1/10 was the maximum when comparing the size of the Mulmae with the buildings in uigwes. A sectional drawing of Gongpo in Geunjeongjeon was drawn on a scale of 1/10. There is a testimony that a senior carpenter drew a cross-section on a scale of 1/10. Therefore, it was determined that the scale of the longitudinal section drawn on the Mulmae paper was 1/10. The term 'the Mulmae' was used equally by carpenter active in Japanese colonial era. The scope of the painting was clarified from pillar to rafter. Uigwes records that the Mulmae was made for wood processing. Through this, it can be understood that the Mulmae painted the entire structure as a longitudinal section.

• Advances in materials Research
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• 제12권2호
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• pp.119-131
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• 2023

The development of sustainable composites materials, from recycled polymeric materials and waste from the wood industry and stone processing, allows reducing the volume of these by-products, minimizing impacts on health and the environment. Nowadays, Polypropylene (PP) is the most recycled polymer in industry, while the furniture industry has increasingly used timber felled from sustainable forest plantations as a eucalypt. The powder tailing from the ornamental stone extraction and processing industry is commonly disposed of in the environment without previous treatment. Thus, the technological option for the development of composite materials presents itself as a sustainable alternative for processing and manufacturing industries, enabling the development of new materials with special technical features. The results showed that powder granite particles may be incorporated into the polypropylene matrix associated with short eucalyptus fibres forming green hybrid composites with potential application in structural engineering, such as transport and civil construction industries.

• Steel and Composite Structures
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• 제50권6호
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• pp.689-703
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• 2024

Construction of high-rise structures, formwork systems that can be installed quickly, resistant to external loads, can be used more than once, have become a necessity. Timber and composite timber materials are preferred in the formation of such formwork systems due to their durability, ease of assembly, light weight and easy to use more than one time. Formwork beams are the most commonly used structural component in the formation of such formwork systems, and these beams can be damaged for different reasons during their lifetime. In this study, H20 top P type timber formwork beams with 1800 and 2450 mm length which is among the products of DOKA(c) company is damaged under the effect of static loading up to a high load level of 85% of the maximum ultimate capacity and after being retrofitted using anchored CFRP strips, performance and behavior of the beams under the influence of various loading types such as static, fatigue and impact are investigated experimentally. Two different lengths of retrofitted timber formwork beams were tested by applying monotonic static, fatigue and impact loading and comments were made about the effects of the retrofit method on performance under different loading types.

• 한국산학기술학회논문지
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• 제15권8호
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• pp.5369-5377
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• 2014

본 우리나라의 불탑은 목탑, 전탑, 석탑 등 다양하게 조영되었다. 하지만 전래되어 지고 있는 불탑은 전탑, 석탑 등 소실되기 어려운 재질의 불탑 형식만이 있다. 석탑에 비해 전탑의 경우 실측 등 실물에 대한 자료는 어느 정도 진행되어 있으나, 문헌적인 자료 및 축조방법에 대한 연구는 아직까지 미흡한 실정이다. 그 이유는 현재 우리나라에 남아있는 전탑의 수가 그리 많지 않은 점, 지역적으로 제한적인 점, 재료적인 한계를 문헌적으로 극복하지 못한 점, 탑의 구성을 시대적, 지역적인 문제로 해석하지 않고 탑의 조영에만 초점을 맞추어 연구한 것 등 때문인 것으로 보인다. 이에 본 연구는 전탑이 축조된 지역에서의 지역적 문화적인 특성을 중심으로 전탑형성과정을 해석하였다. 그 결과 다음과 같은 결론을 얻었다. 첫째, 우리나라와 중국과의 교류는 나타난 유적을 비교해 살펴보면, 실크로드를 통한 교류와 함께 해상경로로의 교류가 있었으며, 이러한 교류는 동아시아지역과도 함께 공유되었다. 그리고 중국과의 교류는 전파를 통한 맹목적인 습득이 아니라 지역적인 세력의 선택적인 교류라 할 수 있었다. 둘째, 우리나라에서 전탑이 조영된 이유로 이제까지의 지역에서 손쉽게 구할 수 있는 양질의 흙 뿐 만 아니라 불교적으로 중심세력에 부합하지 않는 의상의 화엄종의 교섭 및 당시의 시대적인 상황인 불교의 대중화, 지방세력의 거점화 등이 지방세력과의 밀접한 관계가 전탑 조영의 원인으로 나타났다. 셋째, 전탑의 조영은 발해와 신라와의 교섭관계 및 지역적, 민족적 영향력이 작용하고 중국에서 넘어온 문화에 대한 선택적인 소산물이라 할 수 있다. 이 점은 전탑이 중국에서 실크로드를 통한 문화적인 전파 및 중국의 소국으로서의 발생이 아니라 하나의 민족국가의 형성에서 발생된 것으로 볼 수 있다.

• 환경영향평가
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• 제31권6호
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• pp.423-437
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• 2022

환경영향평가서 작성 및 검토 매뉴얼에 따라 훼손되는 수목의 일부를 이식하고 있다. 수목이 원래 서식하고 있는 산림에서 가이식장과 최종 이식장으로 이식하는 과정에서 고사하거나 생육이 불량한 등의 문제점이 지속적으로 제기되고 있다. 이 연구의 목적은 가이식장과 최종 이식장의 토양 특성을 파악하여 기존에 서식하던 산림 토양과의 차이를 분석하고, 이식한 수목의 생육에 적합한 토양으로 개선하는 방안을 제시하는 것이다. 10개의 환경영향평가 사업을 대상으로, 원래의 서식지인 주변의 산림지역, 훼손수목의 일부를 임시로 이식하고 있는 가이식장, 공사가 완료된 후 최종 이식을 하게 되는 공사장을 대표하는 지점에서 각각 2개씩, 총 60개의 토양을 샘플링하여 물리적 특성과 화학적 특성을 분석하였다. 물리적 특성 중에서 투수계수, 유효수분율, 경도, 화학적 특성 중에서 산도, 유기물함량, 전질소, 유효인산에서 집단 간 유의한 차이가 있는 것으로 나타났다. 공사장의 토양은 공사 장비로 인한 답압으로 주변의 산림보다 경도가 높고, 모래 함량이 많아 투수계수는 높으며 유효수분율은 낮아 식물이 필요한 토양 내 수분을 보유하지 못하고 배수되는 양이 많다. 경도가 높은 토양의 공극량을 증가시키고 물리적 구조를 개선하기 위하여 경운을 실시할 필요가 있다. 또한 토양의 물리성과 화학성을 함께 개선하기 위하여 토양 내 부숙된 유기물을 첨가한 후 우드칩이나 낙엽으로 표면을 덮어주는 것이 필요하다.