• Korean Journal of Heritage: History & Science
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• v.54 no.4
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• pp.4-21
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• 2021

The purpose of this study is to examine the names and types of walls constructed in the late Joseon Dynasty in YeonggeonUigwe, a record of construction works of the Joseon Dynasty, and to examine the current status and name of walls constructed in the main hall and the Yeongnyeongjeon Hall of Jongmyo Shrine. The results of the study are as follows. First, the name of the wall can be divided into four types depending on the characteristics, including direction, location, shape, function, material, and complexity, and was used as a compound word in front of the wall. Second, some of the wall types related to the material were found to have differences in the timing of theypes of walls. Since the 18th century, the use of earthen walls has been reduced, and the use of wooden walls and paper walls are often used. Third, the walls of the Jongmyo Shrine were composed of a mud wall and a fireproof wall. A fireproof wall was installed in the main hall, including a pillar, while the Yeongnyeongjeon Hall was installed only between the pillar and the pillar. Fourth, the Gap Wall can be defined as the "wall constructed at the upper part of the chamber used in the construction of the building in Jongmyo." This study is meaningful in that it attempted to clarify the definition of a wall in the late Joseon Dynasty by examining the names and examples of walls used in the late Joseon Dynasty, focusing on walls that lacked research in familiarity.

• The Safety technology
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• no.166
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• pp.12-14
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• 2011

불과 2년 전 한적한 시골 농경지였던 충청남도 서천군 마서면 일대. 푸른 들판과 초록의 나무만 가득했던 이곳이 환경보존의 중요성을 알리는 '생태원'으로 변하고 있다. 무려 99만8,000$m^2$의 사업부지에 생태연구센터, 생태교육센터, 생태체험관, 야외생태체험공간 등이 내년 말 완공을 목표로 한창 조성되고 있는 것. 각 시설 모두가 세간의 큰 관심을 받고 있지만 그중에서도 삼성물산 건설부문이 시공 중에 있는 '국립 생태체험관'은 아직 완공 전임에도 국내를 넘어 세계적으로 유명세를 떨치고 있다. 열대관, 아열대관, 지중해관, 온대관 극지관 등 지구의 5대 생태계를 재현하는 '국립 생태체험관'은 전 세계 각지의 유명 생태관들의 모든 장점에다 국내만의 독창성을 더해 현존 최고 생태체험관의 탄생을 예고하고 있다. 때문에 시공사의 자긍심이 남다른 것은 당연한 일. 최신 친환경 공법을 바탕으로 건물의 가치를 높이는데 혼연의 힘을 다하고 있다. 특히 시공 과정에서 가장 많은 신경을 쓰는 것이 바로 '안전'이다. 후세에 환경보전과 보호의 필요성을 전하는 의미 깊은 장소이니 만큼 안전사고로 그 취지를 얼룩지게 할 수 없다는 것이 이곳 임직원의 각오. 안전으로 역사에 기록될 건축물을 만들고 있는 삼성물산 건설부문의 '국립 생태체험관' 신축현장을 찾아가 봤다.

• Journal of architectural history
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• v.22 no.5
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• pp.7-22
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• 2013

Gimlyong-sa temple has played an important role of Buddhist culture in Gyeongsangdo Provinces(嶺南地域) in the late Joseon Dynasty as the 31st head temple(本山) in the Japanese occupation. There are lots of architectural documentary records remained nevertheless, most of cultural heritages are destroyed by fire in 1997. There were 85 articles in five kinds of books which contained historical achievements of Gimlyong-sa temple and hermitages(Daeseongam(大成庵), Hwajangam(華藏庵), Yangjinam(養眞庵), Geum seondae(金仙臺), Dosoram(兜率庵), Myeongjeogam(明寂庵)). It is possible to understand the five situational peculiarities in the 17~19th century. At the first, they were compiled in 1914 to around 1930 by Kwon Sangro(權相老) to clarify the historical facts. Second, confirmed the formation process of the foundation narrative. Third, the meaning of Seolseondang(設禪堂), Manseru(萬歲樓) and Hyangnojeon(香爐殿) were recorded, it is possible to look at the concept of people at that time. Fourth, the great masters portraits were enshrined in hermitages, not in Gimlyong-sa temple. It means that a hermitage is not for only self-discipline or living but assembly of religious orders(門派). Fifth, Chimgye(枕溪), the great Buddhist clergy and carpenter of Gimlyong-sa, was nationwide active worker in 19th century because he was also in a charge of investment manager for construction.

• Prospectives of Industrial Chemistry
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• v.14 no.6
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• pp.9-20
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• 2011

전 세계는 물 부족 문제를 해결하기 위한 대체수자원 개발에 다양한 노력을 기울이고 있으며, 그 중에 해수 담수화 기술이 가장 주목받고 있다. 특히 역삼투 방식의 해수담수화기술은 기존 증발식에 비해 에너지 소비량이 적기 때문에 매년 10% 이상의 높은 성장률을 기록하고 있다. 그러나 역삼투 방식의 해수담수화는 지표수를 이용하는 시스템에 비해 상당히 많은 에너지를 필요로 한다. 따라서 에너지 효율을 높이기 위한 다양한 공정 개발이 시도되고 있으며, 그 중에 대표적인 기술이 삼투현상을 이용한 FO (Forward Osmosis)와 PRO (Pressure Retarded Osmosis) 공정이다. 본 논문에서는 역삼투막을 이용한 해수담수화 기술의 현황과 한계를 살펴보고, 현 해수담수화공정을 보완할 기술로써 FO와 PRO 공정개발에 관한 최근 연구 동향과 이러한 신기술의 상용화에 필수적으로 요구되는 막에 대한 개발 현황을 살펴보았다.

• Proceedings of the Korean Institute of Navigation and Port Research Conference
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• 2014.10a
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• pp.367-369
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• 2014

대한민국에 근대적인 항로표지가 처음으로 개설된 이래 지난 2003년에는 대한민국 등대 100주년을 맞이하여 '유인등대 해양문화공간 조성계획'을 수립하고 유인등대 시설보완 및 개방, 등대 박물관 확장 개관 등을 실시하였다. 이러한 다각도의 노력은 폭발적인 성과를 거두어 2001년 한 해 동안 유인등대를 다녀간 방문객이 공식적으로 기록된 것만 300만 명이 넘게 되었다. 이후 대한민국의 등대는 40여 개의 유인등대와 60여 개의 무인등대가 널리 알려지게 되었고 문화적 가치를 인정받아 현재 23개의 등대가 등대문화유산으로 지정되었으며 지속적으로 발굴하고 있다. 대한민국의 등대가 많은 국민들의 관심 속에서 방문객이 지속적으로 늘어나면서 특히 유인등대는 해양문화공간으로서의 기능이 요구되었고 향후로도 더욱 가속화될 전망이다. 이러한 맥락에서 본 연구는 대한민국 유인등대의 친수문화적 특성을 체계적으로 살펴보고 그에 따라 해양문화공간의 조성 방향을 적절하게 설정할 수 있도록 하기 위한 기본적인 지침을 설정하는 것을 목적으로 한다.

• Proceedings of the Korean Society of Disaster Information Conference
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• 2017.11a
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• pp.235-236
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• 2017

소수력발전소가 건설 후 점검 및 유지보수를 지속적으로 수행 설비성능을 유지하지만, 30년이 경과하면 노후화 및 피로현상으로 성능이 저하되고 경제적 내용연수가 도래한다. 대수력의 경우 전문인력과 점검 및 보수비용을 투자하여 일상, 주간, 월간, 년간, 정기보수를 수행하고 그 기록을 유지관리하고 있지만, 소수력발전소의 경우는 그러하지 못하여 발전소 효율뿐만 아니라 운용중의 안전도 위협받고 있는 상황이다. 본 논문에서는 국내 시설물 안전관리에 관한 특별법에 의거 필리핀에 위치한 노후 수력발전소의 현대화를 위하여 최초 기존 시설물에 대한 안전진단을 실시하여 토목 및 건축물의 보강을 위한 방법을 선정하고 이를 바탕으로 수력발전설비로부터 발생하는 진동과 같은 다양한 영향을 감소시키기 위한 토목기술을 반영하여 현지 환경에 적합한 수차선정과 노후 시설물의 유지보수를 국내 토목 보수 보강 기술로 설계하였다.

• Journal of the Earthquake Engineering Society of Korea
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• v.16 no.1
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• pp.1-12
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• 2012

In this paper, the reduction factors to calculate the site coefficients of an embedded foundation are estimated, considering the effect of a poor backfill for the seismic design of a building built on an embedded foundation. This is determined by utilizing in-house finite element software, P3DASS, which has the capability of horizontal pseudo 3D seismic analysis with nonlinear soil. The 30m thick soil on stiff rock was assumed to be homogeneous, elastic, viscous and isotropic, and equivalent circular rigid foundations with radii of 10-70m were assumed to be embedded 0, 10, 20, and 30 m in the soil. Seismic analyses were performed with 7 bedrock earthquake records de-convoluted from the outcrop records; the scaling of the peak ground accelerations were to 0.1 g. The study results show that the site coefficients of a poor-backfilled foundation are gradually reduced as the foundation embedment ratio increases, except in the case of a small foundation embedded deeply in the weak soft soil. In addition, it was found that the deviation of the site coefficients due to the foundation size was not significant. Therefore, the typical reduction factors of an embedded foundation with poor backfill are proposed in terms of the shear wave velocity and site class. This is in order to find the site coefficients of an embedded foundation by multiplying the reduction factor by a site coefficient of a surface foundation specified in the design code. They can then be interpolated to determine the intermediate shear wave velocity.

• Journal of the Earthquake Engineering Society of Korea
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• v.14 no.4
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• pp.1-15
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• 2010

In this study, the reduction factor of the code-defined site coefficient due to the embedment of a foundation was estimated for the seismic analysis of a building built on a soft soil site. This was done by utilizing the in-house finite element software P3DASS, which has the capability of pseudo 3D seismic analysis with nonlinear soil layers. A 30m thick soft soil site laid on the rock was assumed to be homogeneous, elastic, viscous and isotropic, and equivalent circular rigid foundations with radii of 10-70m were considered to be embedded at 0, 10, 20 and 30m in the soil layer. Seismic analyses were performed with 7 bedrock earthquake records deconvoluted from the outcrop records of which the effective ground acceleration was scaled to 0.1g. The study results showed that the site coefficients are gradually reduced except in the case of a small foundation embedded deeply in the weak soil layer, and it was estimated that the deviation of the site coefficients due to the foundation size was not significant. The standard reduction factor due to the foundation embedment were calculated adding the standard deviation to the average of 5 reduction factors calculated for 5 different foundation radii. Standard reduction factors for the site amplification factor were proposed for the practical amplification and the codes of KBC, etc., in accordance with the average shear wave velocity of the site, and the site class.

• Journal of the Computational Structural Engineering Institute of Korea
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• v.30 no.5
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• pp.371-380
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• 2017

The risk-targeted seismic design concept was first included in ASCE/SEI 7-10 to address problems related to the uniform-hazard based seismic concept that has been constructed without explicitly considering probabilistic uncertainties in the collapse capacities of structures. However, this concept is not yet reflected to the current Korean building code(KBC) because of insufficient strong earthquake data occurred at the Korean peninsula and little information on the collapse capacities of structures. This study evaluates the risk-targeted seismic performance of steel ordinary concentrically braced frames(OCBFs). To do this, the collapse capacities of prototype steel OCBFs are assessed with various analysis parameters including building locations, building heights and soil conditions. The seismic hazard curves are developed using an empirical spectral shape prediction model that is capable of reflecting the characteristics of earthquake records. The collapse probabilities of the prototype steel OCBFs located at the Korean major cities are then evaluated using the risk integral concept. As a result, analysis parameters considerably influence the collapse probabilities of steel OCBFs. The collapse probabilities of taller steel OCBFs exceed the target seismic risk of 1 percent in 50 years, which the introduction of the height limitation of steel OCBFs into the future KBC should be considered.

• Journal of the Korean Institute of Landscape Architecture
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• v.51 no.1
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• pp.85-97
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• 2023

Seoul Boramae Park was opened on May 5, 1986, after the Republic of Korea Air Force Academy relocated to Cheongju City in 1985. This study aims to examine the birth and evolution of Seoul Boramae Park and diagnose the park's value being transformed from the former site of the Air Force Academy. Policy reports and newspaper data were analyzed as a research method, focusing on Seoul public records. The study results are as follows. First, Seoul Boramae Park is a large-scale park created before the policy for parks on relocated sites we enacted. Second, Seoul Boramae Park has historical value as an urban park where memories and traces of the Air Force Academy overlap. Third, Seou Boramae Park contributed to regional change by promoting the public value of parks created on the relocated sites with an urban planning method. Seoul Boramae Park has implications for Korean landscape history as a case of securing large green areas in Seoul and presenting its function and roles as a park created on a relocated site.