2D 도면 텍스트 정보 추출을 활용한 도면관리 프로토타입

박상헌(Park, Sang-Hun),조동현(Cho, Dong-Hyun),구교진(Koo, Kyo-Jin) 대한건축학회 2013 대한건축학회 학술발표대회 논문집 Vol.33 No.1

BIM 엘리먼트-작업항목 연계 마감공사 비용 산정 프로토타입

박상헌(Sang-Hun Park),구교진(Kyo-Jin Koo) 한국산학기술학회 2022 한국산학기술학회논문지 Vol.23 No.11

설계안은 설계단계를 거치며 구체화하며, 견적은 설계안을 채택하는 기준으로 활용된다. 실무의 설계와 견적은 업역이 분리되어 있으며, 정확한 견적은 실시설계단계에 도달해야 가능하다. 다수의 이전 연구에서 설계단계에서 다양한 견적 방법들이 제시되었다. BIM을 이용한 견적은 3D 모델로부터 물량산출이 용이하고, 상세수준에 따라 견적에 차이가 있다. 건축가가 생성한 BIM 모델에 의한 견적 결과는 견적 엔지니어에 의한 견적과 차이가 있다. 본 논문은 BIM을 이용한 설계 프로세스에서 건축가가 선정한 설계요소와 견적 엔지니어의 지식이 연계하는 견적 방법을 제안한다. 견적 방법은 선정 엘리먼트와 비선정 작업항목으로 구분하며, 물량과 비용은 개별 수식에 의해 산출한다. 본 연구에서 이와 같이 수행하기 위한 초기 모델로 프로토타입을 개발하였다. 사례를 적용한 결과, 기존 내역서에 포함된 항목은 92.13%가 도출되었으며, 비용의 오차율은 15.47%로 나타났다. 전문가 면담 결과에서 프로토타입은 건축가와 같은 견적 초보자에게 유용하고, 실무적용성을 위해 BIM 모델의 명확한 상세수준 설정이 필요한 것으로 나타났다. The design alternative was materialized through the design phase, and the estimation could be used as a criterion for adopting the design alternative. The design and estimate of practice are divided into business scopes, and an accurate estimate is possible when the construction document phase is reached. Many studies have presented various cost estimation methods for the design phase. Estimations using BIM facilitate quantity take-off from the 3D model, and there are differences in cost estimation depending on the level of detail. The cost estimation result by the BIM model generated by the designer differs from the cost estimation by the estimator. This paper proposes a cost estimation method that links the design elements selected by the architect and the knowledge of the estimator in the design process using BIM. This approach is divided into selected elements and non-selected work items, and the quantity and cost are calculated by each formula. In this research, a prototype was developed as an initial model to perform in this way. As a result of applying the case, 92.13% of the work items included in the existing bill of quantity were derived, and the cost error rate was 15.47%. From the interviews, the prototypes were useful for estimator beginners like architects who need a precise level of detail of the BIM model for practical applicability.

생활폐기물 처리과정에서의 도시 공간적 불균형 현상 연구

박상헌(Sang Hun Park),김정빈(Jung Bin Kim) 서울연구원 2013 서울도시연구 Vol.14 No.4

BIM 기반 비선정 작업항목 물량산출 방법에 관한 연구

박상헌 ( Park Sang-hun ),윤선재 ( Yoon Sun-jae ),구교진 ( Koo Kyo-jin ) 한국건축시공학회 2019 한국건축시공학회 학술발표대회 논문집 Vol.19 No.2

Estimates based on BIM makes it possible to perform from quantity take-off to construction cost estimates by using model, which is made in the phase of design and construction. As the BIM models are made up of the units of element, there an advantage of the automative quantity take-off, if the correction or change of element occurs. Work items, not included in the elements of the BIM model, are excepted from bill of quantity. Level of detail(LoD) of the BIM model can be improved for detailed estimates, but an excessive modeling for estimates is inefficient. This study presents the measure for selection and quantity take-off of work items, those are not expressed in the BIM model. The proposed method avoids the creation of excessive BIM Models and enables quantity take-off in conjunction with the element.

보문 : 생물학적 전환에 의한 Compound K가 강화된 Ginsenoside의 HHDPC와 HaCaT 세포 증식 효과

박상헌 ( Sang Hun Park ),양정은 ( Jung Eun Yang ),신헌섭 ( Heon Sub Shin ),이정민 ( Jung Min Lee ) 대한미용학회(구 대한미용과학회) 2012 대한미용학회지 Vol.8 No.2

Ginsenosides have been regarded as the principal components responsible for the pharmacological and biological activities of ginseng. In this study, more than 100 strains of bacteria were isolated from 30 kinds of soil. The 32 strains of bacteria showing β-glucosidase activity were screened using a Esculin-R2A agar. In order to biotransformation of ginsenosides, β-glucosidase-positive bacteria were cultivated with protopanaxadiol (PPD) ginsenosides. Biotransformation of PPD into minor ginsenosides was confirmed by thin layer chromatography (TLC) 48 h after cultivation. THG 01 showing transformed minor ginsenosides in TLC was selected from soil and was revealed to belong to genus of Flavobacterium. Its crude enzyme could transform PPD into a mixture of minor ginsenosides (G-01), which contained compound K more than 50% in total ginsenosides in HPLC chromatogram. PPD treated at a concentration of 0.1μg/mL increased the proliferation of human hair dermal papilla (HHDPC) and human keratinocyte (HaCaT) cells by about 30%, compared with non-treated group. G-01 exerted more proliferative effect by about 50% than PPD. This result suggested that the mixture of minor ginsenosides and/or compound K formed by biotransformation may provokes the growth of hair by proliferative effect on HHDPC and HaCaT.

IFC-BIM 연계 지식정보기반 마감공사 개산견적 프레임워크

박상헌(Park, Sang-Hun),박형진(Park, Hyung-Jin),구교진(Koo, Kyo-Jin) 한국산학기술학회 2015 한국산학기술학회논문지 Vol.16 No.6

건설사업 전 생애주기 중 설계단계에서의 대안별 비용 예측은 사업의 수익성 및 타당성 분석을 위한 판단기준이 된다. 설계도서가 완성되지 않은 초기 설계단계에서 과거의 유사자료를 바탕으로 개산견적이 실시되고 있다. 견적자의 경험 과 산정방법에 따라 물량이 상이하고 누락되는 경우가 발생한다. 최근 IT기술 발전으로 BIM 기술이 주목을 받으면서 건설 전반에 걸쳐 기획, 설계, 시공, 유지관리 기술의 패러다임을 변화 시키고 있다. BIM을 활용한 다양한 연구가 시도되고 있지 만, 활용 효과는 건설 사업의 기대에 미치지 못하고 있다. 본 연구에서는 국제 표준 IFC와 견적 관련 지식정보를 연계한 개산견적 프레임워크를 제안한다. 그 결과, 초기 설계단계에서 의사결정을 위한 공사비 예측을 수행하며, 그리고 선행연구의 한계점을 일부분 극복이 가능할 것으로 기대된다. 또한, 개산견적 프레임워크는 프로세스 일부를 자동화하였기 때문에 변경 에 대한 능동적인 대처가 가능하다. Cost Estimate for alternative in design phase of construction become criterion for profitability and feasibility analysis of projects. Initial design phase performed schematic estimate based on similar data in the past. The quantity take-off according to estimators experience and calculation method are occurred different or missing. IT (Information Technology) technology evolution has been promoting BIM technology in construction. It is changing the paradigm of planning, design, construction and maintenance phase throughout the construction project. A number of studies have been attempted to apply BIM technology in the construction. In this paper, we propose schematic estimation framework linking standard format IFC (Industry Foundation Classes) and estimate related knowledge. As a result, it performs a cost prediction for decision-making in the design phase, and expected to overcome the limitations of previous studies. In addition, it is possible actively coping with changes.

태그기반 건축도면관리 프로토타입 방안

박현수(Park, Hyun-Su),조동현(Cho, Dong-Hyun),박상헌(Park, Sang-Hun),구교진(Koo, Kyo-Jin) 대한건축학회 2011 대한건축학회 학술발표대회 논문집 - 계획계/구조계 Vol.31 No.1(구조계)

토지피복도 정확도에 따른 SWAT 예측 오류 평가

허성구 ( Sung Gu Heo ),김기성 ( Ki Sung Kim ),김남원 ( Nam Won Kim ),안재훈 ( Jae Hun Ahn ),박상헌 ( Sang Hun Park ),유동선 ( Dong Seon Yoo ),최중대 ( Joong Dae Choi ),임경재 ( Kyoung Jae Lim ) 한국물환경학회 2008 한국물환경학회지 Vol.24 No.6

터널 화재시 연기확산 방지를 위한 국소제연설비의 성능 평가 연구

유용호,박상헌,한상주,신현준,Yoo. Yong Ho,Park. Sang Hun,Han. Sang Ju,Shin. Hyun Jun 한국방재학회 2014 한국방재학회논문집 Vol.14 No.3

장대화되고 대심도화 되는 현대 터널은 반밀폐적인 구조로 인하여 화재발생시 효과적인 배연에 많은 어려움이 있으며, 고온의 온도상승과 함께 유독성 연기로 인한 피난과 소화활동에 많은 어려움을 주고 있다. 본 연구에서는 화재시 발생되는 연기를 인접구역으로 확산되지 않도록 구획하여 피난자의 대피로를 확보하고 대피시간을 연장 시킬 수 있는 국부제연설비인 에어커튼을 적용한 성능평가 실험을 수행하였다. 실험결과 에어커튼에 의하여 형성된 연기차단막은 터널 내부의 차량 화재로 인한 고온 연기층의 확산 방지 효과를 확인할 수 있었다. 또한 에어커튼에 의한 차단막 내외부의 일산화탄소 측정결과에서도 40배 이상 차이를 보임으로써 에어커튼을 적용한 터널 화재시 연기확산방지 효과를 기대할 수 있을 것으로 평가 되었다. The modern tunnel tends to be long and deep and therefore has a lot of difficulties for effective smoke ventilation on fire due to the semi-hermetic structure. Also, it has difficulty on evacuation and fire fighting by toxic gases together with high increase rate of temperature. The smoke occurring on fire is to avoid spreading over adjacent area and secure a escape road for prolonging the escape time. Accordingly, test on performance evaluation has been carried out applying air curtain, local smoke extraction facilities, in this study. As a result of the test, it can be seen that the smoke barrier formed by the air curtain has an effect on prevention of the smoke layer spreading. In addition, in the result of the measurement on the carbon monoxide inside and outside the barrier by the air curtain, there was difference of 40-time carbon monoxide inside and outside. Therefore, it has been shown that the effect to prevent the smoke from spreading is expected on fire of the tunnel applying the air curtain.

고랭지 농업의 작물별 객토량 변화에 따른 토양유실 저감 분석

허성구 ( Sung Gu Heo ),전만식 ( Man Sig Jun ),박상헌 ( Sang Hun Park ),김기성 ( Ki Sung Kim ),강성근 ( Sung Keun Kang ),옥용식 ( Yong Sik Ok ),임경재 ( Kyoung Jae Lim ) 한국물환경학회 2008 한국물환경학회지 Vol.24 No.2

There is increased soil erosion potential at highland agricultural crop fields because of its topographic characteristics and site-specific agricultural management practices performed at these areas. The agricultural upland fields are usually located at the sloping areas, resulting in higher soil loss, pesticides, and nutrients in case of torrential rainfall events or typhoon, such as 2002 Rusa and 2003 MaeMi. At the highland agricultural fields, the soil reconditioning have been performed every year to decrease damage by continuous cropping and pests. Also it has been done to increase crop productivity and soil fertility. The increased amounts of soil used for soil reconditioning are increasing over the years, causing significant impacts on water quality at the receiving water bodies. In this study, the field investigation was done to check soil reconditioning status for potato, carrot, and cabbage at the Doam-dam watershed. With these data obtained from the field investigation, the Soil and Water Assesment Tool (SWAT) model was used to simulate the soil loss reduction with environment-friendly and agronomically enough soil reconditioning. The average soil reconditioning depth for potato was 34.3 cm, 48.3 cm for carrot, and 31.2 cm for cabbage at the Doam-dam watershed. These data were used for SWAT model runs. Before the SWAT simulation, the SWAT ArcView GIS Patch, developed by the Kangwon National University, was applied because of proper simulation of soil erosion and sediment yield at the sloping watershed, such as the Doam-dam watershed. With this patch applied, the Coefficient of Determination (R2) value was 0.85 and the Nash-Sutcliffe Model Efficiency (EI) was 0.75 for flow calibration. The R2 value was 0.87 and the EI was 0.85 for flow validation. For sediment simulation, the R2 value was 0.91 and the EI was 0.70, indicating the SWAT model predicts the soil erosion processes and sediment yield at the Doam-dam watershed. With the calibrated and validated SWAT for the Doam-dam watershed, the soil erosion reduction was investigated for potato, carrot, and cabbage. For potato, around 19.3 cm of soil were over applied to the agricultural field, causing 146% of more soil erosion rate, approximately 33.3 cm, causing 146% of more soil erosion for carrot, and approximately 16.2 cm, causing 44% of more soil erosion. The results obtained in this study showed that excessive soil reconditioning are performed at the highland agricultural fields, causing severe muddy water issues and water quality degradation at the Doam-water watershed. The results can be used to develop soil reconditioning standard policy for various crops at the highland agricultural fields, without causing problems agronomically and environmentally.