• 한국건축시공학회:학술대회논문집
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• 한국건축시공학회 2014년도 춘계 학술논문 발표대회
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• pp.188-189
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• 2014

Recently, structural system of apartment building is changing from wall type to column type to accommodate various life styles of residents in Korea. Reinforced-concrete bearing wall structures have been mainly used in apartment construction since 1980's. It is impossible to remove the bearing wall in case of remodeling a house, so that the lightweight wall is needed to apply to the column type structure of the Long Life Housing. Therefore, the purpose of this study is to evaluate the construction performance of the wall. Constructibility reviews are performed throughout interview survey from builders who charge with managing the construction of the lightweight wall in field. This paper present that constructor prefer the bearing wall rather than the lightweight wall because of the schedule delay, difficulty of management, and lack of skilled labor. The results indicate what we should improve on the lightweight wall from now on.

• 한국지반공학회:학술대회논문집
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• 한국지반공학회 1991년도 추계학술발표회 논문집 지반공학에서의 컴퓨터 활용 COMPUTER UTILIZATION IN GEOTECHNICAL ENGINEERING
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• pp.289-311
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• 1991

Analysis of supported excavation system by Elasto-Plastic Isoparametric Finite Element Method and Elasto-Plastic Beam Method have been conducted for the simulation of stepwise underground excavation. Conventional methods, fixed Supported Beam and Spring Supported Beam method, also have been examined and compared with the results of elasto-plastic beam method and field data. Except unavoidable result of upward ground settlement near the top of retaining wall and relatively high bending moment of wall at each excavation level, satisfactory results have been derived using elasto-plastic isopara metric finite element method. The results from elasto-plastic beam analysis program, developed by the author, are proved to be fit field data in acceptable variance as shown in the paper. Displacement and bending moment, of the wall by conventional methods, both fixed supported beam and spring supported beam, are always underestimated than field data, and attention must be given that the diffence increases with deeper excavation depth and lower horizontal subgrade reaction of the ground.

• 한국소음진동공학회:학술대회논문집
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• 한국소음진동공학회 2007년도 춘계학술대회논문집
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• pp.65-69
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• 2007

Recently, the method of the apartment building design is changing from wall type to moment structure. Because of this reason, dry wall systems are used plentifully. This study examines the sound insulation performance of the light weight concrete panel using bottom ash. There is the difference of airborne sound isolation between laboratory and field test. For the purpose of searching deviation, we use the prediction tool(Insul 6.0). First, we calculated the prediction data and measured the sound isolation in the wall at the lab. Then, we measured it in the field and compared them. At the base of these datum, we measured the difference.

• 대한전기학회논문지
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• 제45권3호
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• pp.386-392
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• 1996

Zinc-Borosilicate is used as a side insulator wall to make high breakdown voltage with one Field Limiting Ring in a power p-n junction device in simulation. It is known that surface charge density can be yield at the interface of Zinc-Borosilicate glass / silicon system. When the glass is used as a side insulator wall, surface charge varied potential distribution and breakdown voltage is improved 1090 V under the same structure.The breakdown voltage under varying the surface charge density has a limit value. When the epitaxial thickness is varied, the position of FLR doesn't influence to the breakdown characteristic not only under non punch-through structure but also under punch-through structure. (author). 7 refs., 12 figs., 2 tabs.

• 한국자기학회:학술대회 개요집
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• 한국자기학회 2000년도 International Symposium on Magnetics The 2000 Fall Conference
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• pp.279-286
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• 2000

Magnetic field dependence of magnetization reversal in Co/Pt multilayers has been quantitatively investigated. Serial samples of Co/Pt multilayers have been prepared by dc-magnetron sputtering under various Ar pressure. Magnetization reversal was monitored by magnetization viscosity measurement and direct domain observation using a magneto-optical microscope system, and the wall-motion speed and the nucleation rate R were determined using a domain reversal model based on time-resolved domain reversal patterns. Both and R were found to be exponentially dependent on the reversing applied field. From the exponential dependencies, the activation volumes of the wall motion and nucleation could be determined based on a thermally activated relaxation model, and the wall-motion activation volume was revealed to be slightly larger than the nucleation activation volume.

• 한국건축시공학회:학술대회논문집
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• 한국건축시공학회 2021년도 가을 학술논문 발표대회
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• pp.152-153
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• 2021

Various types of panels can be designed using acrylic rods, which are materials that allow light to pass through existing concrete. After designing using people, animals and objects, a prototype was produced by mixing ultra-high-strength concrete, and taking care not to damage the fixed acrylic rod during pouring and demolding. Yun Dong-ju's free design of a figure and a researcher were inserted into the wall inside the interior space, and then the installation was completed on-site. For installation, a metal frame was installed on the temporary wall, which is a non-structural wall, and then a relatively heavy concrete panel was fixed using a structural sealant and then applied to the field.

• 한국지반공학회:학술대회논문집
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• 한국지반공학회 2004년도 춘계학술발표회
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• pp.985-994
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• 2004

The application of the reinforced retaining wall has increased in the last 10 years in Korea. The height of reinforced wall is generally limited to less than 15m. It has been reported that the reinforced wall higher than 10m should have higher strength reinforcement or should reduce the lateral earth pressure of the reinforced wall to secure the stability of the wall. In this study, the reinforced retaining wall was constructed 14m high, backfilled by a mixture of soil and cement and instrumented on the reinforcement elements. The instrumented reinforced wall was monitored during and after construction. Field monitoring result shows that a backfill by a mixture of soil and cement reduced the tensile stress developed on the reinforcing elements and the reinforced wall backfilled by a mixture of soil and cement performed successful.

• 대한토목학회논문집
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• 제31권2C호
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• pp.65-74
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• 2011

본 논문에서는 대구경 소일-시멘트 교반체를 보강재로 적용한 토류벽의 굴착 시 거동을 현장 시험시공 결과를 통해 분석하였다. 먼저 대구경 소일-시멘트 교반체 공법에 대한 설명 및 기본 설계개념을 기술하였다. 공법을 9.8 m 굴착 현장에 적용하면서 굴착 단계별 벽체의 거동을 수평변위 및 하중 계측자료를 바탕으로 분석하였으며, 굴착에 의해 발생한 인접지반의 변위를 침하 계측 및 수치해석을 통해 평가하였다. 분석 결과, 대구경 소일-시멘트 교반체로 보강된 벽체는 보강재 길이가 0.45 H (H:벽체 높이) 이상인 경우 변위 및 토압 발생 거동이 소일 네일링과 같은 기존 공법으로 지지된 토류벽과 유사한 것으로 나타났다.

• 디자인학연구
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• 제21권
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• pp.185-194
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• 1997

건축물의 마감재료인 내장타일은 생활공간에 많은 부분에 쓰여지고 있지만 제품이 연구되고 생산되고 판매되는 과정에 대해서는 별로 많은 관심을 가지지 못했다. 생활문화의 발전과 주택의 고급화는 실내공간에서 차지하는 마감재에 많은 느낌과 관심을 가지게 되어 타일에 대한 관심도 매우 높아지게 되었다. 특히 디자인을 전공하는 디자이너들에게는 타일산업은 단지 요업분야로만 생각되어져 있어 별로 큰 관심의 대상이 아니었다. 이러한 사고의 바탕으로 본 연구는 타일산업에서 차지하는 디자인의 비중과 디자인 방향과 역할을 여러 각도에서 접근하여 우리 나라 타일산업의 발전과 미래를 제시하고자 한다.

• Journal of Magnetics
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• 제5권4호
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• pp.116-119
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• 2000

Magnetic field dependence of magnetization reversal in Co/Pt multilayers was quantitatively investigated. Serial samples of Co/Pt multilayers were prepared by dc-magnetron sputtering under various Ar pressures. Magnetization reversal was monitored by magnetization viscosity measurement and direct domain observation using a magneto-optical microscope system, and the wall-motion speed V and the nucleation rate R were determined using a domain reversal model based on time-resolved domain reversal patterns. Both V and R were found to be exponentially dependent on the applied reversing field. From the exponential dependencies, the activation volumes for wall motion and nucleation could be determined, based on a thermally activated relaxation model, and the wall-motion activation volume was found to be slightly larger than the nucleation activation volume.