• 한국토양환경학회지
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• 제4권2호
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• pp.163-174
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• 1999

본 논문은 매립지의 침출수 유출로 오염된 지반 및 지하수의 효과적인 처리 방법 중의 하나인 연직 차수벽의 시공사례를 다루고 있다. 연직 차수벽의 설치 목적은 오염된 지하수의 이동을 경제적이고 효과적으로 차단하고, 차단후 차수벽 내부의 오염된 지하수를 회수하여 침출수 처리장에서 처리함으로써 추가적인 지반오염을 방지하며, 매립장의 잔여 이용 기간동안 매립장의 안전 운영의 기초를 확보하는 것이다. 현장조사의 단계에서 부터, 공법의 선정과 설계, 시공. 시공품질의 확인에 까지 일련의 과정을 보고하였다. 오염원과 오염의 원인 및 범위를 파악한 후, DMW공법과 HEC고화제를 이용하여 심층 혼합 차수층을 설치하였다. 균열이 심한 암반층의 차수를 위해서는 우레탄을 주입하여 차수층을 형성하였다. 조사기간 동안의 현장 모니터링 결과에 의하면, 토사와 암반층에 걸친 심층 혼합 차수층의 설치로 본 현장의 오염 처리는 현재를 기준으로 만족스러운 것으로 판단되었다.

• KIEAE Journal
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• 제14권6호
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• pp.93-97
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• 2014

Curtain wall system of office buildings has recently become very common in Korea. As the multi-layer curtain glazing is exposed to outdoor environment, it is very subjected to direct environmental impact. Consequently, breakage and cracks of glazing due to heat expansion is frequently observed. This study explores various causes and aspects for destruction of multi-layer glazing. A sensitivity analysis was performed on the basis that thermal changes causes damage to the multi-layer glazing. Air temperature in air cavity within the multi-layer glazing was examined to find its effect on multi-layer glazing breakage. Analysis showed high deflection to depth ratio of 1:1.8 and that higher the aspect ratio, smaller is the deflection. Allowable pressure showed that the weakest value is for aspect ratio of 1:2.9. Sensitivity analysis by the area of the glazing showed that as area of glazing becomes higher, allowable pressure and deflection-depth ratio becomes smaller. For allowable pressure and allowable deflection-depth within air cavity, the glazing breakage occurred at least $107^{\circ}C$. The results from glazing breakage by thermal factor shows that it is hard to break the glazing with only an increase in air cavity temperature in multi-layer glazing applied in buildings.

• 한국건축시공학회지
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• 제12권6호
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• pp.648-663
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• 2012

With recent attempts to improve quality and productivity, the prefabrication manufacturing system has been occupying an increasing share of the construction area. To minimize site work, material is more frequently being produced and partially assembled at a plant, and then installed at a site. For this reason, the production process is being divided and the materials are being delivered to the site after passing through multiple plants. With these changes in the production process, the materials delivery plan is becoming an important management point. In particular, as road transportation using trucks has a 71 percent share of the domestic transportation market, selecting the proper transportation path is important when delivering materials and equipment to a site. But the management system at the project design phase to calculate the delivery cost by considering the production process of the pre-fab material and the $CO_2$ emission at the material delivery phase is currently lacking. This study suggests a process design model for assembly production of the pre-fab material and transportation logistics based on carbon emission. The suggested model can be helpful to optimize the location of the intermediate plant. It is expected to be utilized as a basic model at the project plan and design phase when subcontractors make decisions on items such as materials procurement, selecting the production method, and choosing the location of the assembly plant.

• 대한기계학회논문집A
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• 제31권3호
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• pp.285-294
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• 2007

Previously, ASCI(Automation System for Curtain-wall Installation) which combined with a multi-DOF manipulator to a mini-excavator was developed and applied on construction site. As result, the operation by one operator and more intuitive operation method are proposed to improve ASCI's operation method which need one person with a remote joystick and another operating an excavator. The human-robot cooperative system can cope with various and untypical constructing environment through the real-time interacting with a human, robot and constructing environment simultaneously. The physical power of a robot system helps a human to handle heavy construction materials with relatively scaled-down load. Also, a human can feel and response the force reflected from robot end effecter acting with working environment. This paper presents the feasibility study regarding the application of the proposed human-robot cooperation control for construction robot through experiments on a 2DOF manipulator.

• 한국건축시공학회:학술대회논문집
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• 한국건축시공학회 2021년도 봄 학술논문 발표대회
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• pp.6-7
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• 2021

3D printing has the unique advantage of the ability to customize freeform products even in small quantities. It was recently applied successfully in the node connection system for the irregular shaped glass design of Gwanggyo Galleria Department Store. This was achieved by applying 3D printing technology for an innovative smart node design. The novel system offers flexibility to address various design challenges in addition to maximizing construction quality and reducing construction period. In this paper, we aim to examine the use of 3D printing based innovative technologies in the construction industry. With this aim in mind, we present the case of the Gwanggyo Galleria Department Store's smart nodes. The key objective of this study is creating awareness in the construction industry of the need to utilize fourth industrial revolution technology in architecture.

• 한국건설관리학회논문집
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• 제9권3호
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• pp.118-125
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• 2008

최근 주5일 근무제도, 공기 단축형 입찰제도와 후분양제도의 도입과 같은 제도적 변화로 건설공사에서 생산성 향상에 대한 관심이 증대되고 있다. 그러나 국내 건설 산업의 생산성은 선진국에 비해 현저히 낮은 것으로 지적되고 있다. 현재 초고층 공사가 활발히 이루어지고 있는 두바이 및 북미, 동남아시아 등지에서는 외부 커튼월로 건축 외관용 PC (Architectural PC)가 사용되고 있다. 이는 국내 공동주택 공사에서의 외부 날개벽, 수벽 및 파라페트 등의 외벽 마감을 대체하는 것으로 공기 단축 등의 생산성 향상 효과를 인정받아 해외에서 널리 사용되고 있다. 이에 본 연구에서는 국내 공동주택 공사에서 건축외관용 PC 도입을 제안하고, 건축 외관용 PC 활용에 따라 생산성 향상이 가능한지를 검증하였다. 설문 결과 공동주택의 외벽 마감에 건축 외관용 PC를 사용하였을 때 기존 공동주택 공사보다 생산성 측면에서 우수하다고 분석되었다.

• 한국디지털건축인테리어학회논문집
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• 제11권3호
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• pp.35-42
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• 2011

The exterior system of buildings, which is the typical curtain wall, has been made with glass and metal. Theses materials, however, have weaknesses such as inadequate insulating quality, short durability, combustibility and toxic substance. On the other hand, Autoclaved Aerated Concrete(AAC) or Autoclaved Lightweight Concrete(ALC) possess the great energy efficiency and the superb insulating quality as substitute of existing exterior system materials. In this research, strength characteristics and bubble dispersion of hydrothermal synthesis process of AAC based on CaO/$SiO_2$(C/S) ratio are analyzed. C/S ratio is determinated and bubble distribution and compressive strength are studied through the test of varied water-to-solid mineral ratio(W/S). In hydrothermal synthesis program, final C/S ratio is determined as 0.7 consider of the manufacturing process and hydrothermal synthesis is done at $180^{\circ}C$ for 7 hours. The analysis shows slurry has about 2,300cP viscosity and 0.56 specific gravity therefore it is expected AAC has the appropriate facility in the manufacturing process and Hydrates of AAC's Expansion.

• KIEAE Journal
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• 제4권3호
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• pp.113-119
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• 2004

As Building Integrated Photovoltaic(BIPV) system replaces the conventional building finishing materials with PV modules, two function of electricity generation and building envelope can be expected. Therefore BIPV can be a good alternative technology for the 21 century environment-friendly buildings. The objective of this paper is to develope BIPV modules for a commercial buildings of which structure is mainly light-weight, curtain wall system. Two types of module are developed for a opaque part and a transparent part of building envelope. Current technology level and market status of Korea determines the configuration of developed BIPV modules. Architectural considerations for the integration of PV module to building envelope such as building structure, construction type, safety, regulation, maintenance etc. have been carefully reflected from the early stage of BIPV module design. Especially the survey result of current building envelope materials determines the size of unit BIPV modules and a unique cladding method for PV module installation is developed. Trial product of BIPV modules and cladding hardwares are manufactured and sample construction details for a demonstration building are proposed.

• 한국축산시설환경학회지
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• 제20권4호
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• pp.161-166
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• 2014

We conducted investigations of the information and welfare of cattle in Korea. The livestock housing of conventional cattle farms and organic cattle farms were open side wall type with winch curtain and used litter floor. The stocking density of conventional (ranging from $10head/m^2$ to $12.5head/m^2$) and organic cattle farms (ranging from $10head/m^2$ to $16.7head/m^2$) met the demand for conventional or organic standards, respectively. The galvanized plate and sunlight plate were used as the roof material in all of farms. Especially, additional areas were provided to produce forage or to improve animal welfare in organic cattle farms. Thus we believe that present data contribute to develop the animal welfare certification for cattle and to improve animal welfare in Korea.

• 한국건설관리학회:학술대회논문집
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• 한국건설관리학회 2003년도 학술대회지
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• pp.202-213
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• 2003

타워팰리스 III 현장은 현존하는 국내 건축물로는 가장 높은 초고층 주상복합건물이다. 초고층 현장에는 일반현장과는 다른 시공기술 및 엔지니어링 기술의 적용이 요구되는 바, 타워팰리스 III 현장은 지금까지 축적된 기술을 바탕으로 보다 발전된 시공기술과 엔지니어링 기술, 그리고 공정관리기법을 통하여 마감공사 포함 충 당 13.4일이라는 공사 속도를 달성하였다. 이와 같은 공사를 성공적으로 수행하기 위하여 적용된 첨단 시공기술로 1) 골조공사 및 외벽공사의 3-Day Cycle을 달성하기 위한 여러 가지 공법, 2) 초고층 주거건물의 마감공사 공정관리를 위한 Tact 공정관리 시스템, 3) 현장관리 시스템으로 물류관리 및 정보공유 시스템 등이 적용되었다. 또한 엔지니어링 요소기술로 1) 고유동 무다짐 콘크리트와 국내 최초의 압축강도 $800kgf/cm^{2}$의 초고강도 콘크리트 등의 New Material, 2) 냉각수 순환형 파이프쿨링 시스템 등의 New Method, 3) Smart Fan Control 주방환기 시스템을 포함한 Mechanical System 4) False Car System을 포함한 Electrical System 등이 있다.