• 한국공간구조학회논문집
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• 제22권1호
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• pp.67-73
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• 2022

Middle size of membrane retractable roof is under 25m span which consists of various moving systems. Sliding carriage is the system that leads the membrane to parking place, transferring the load from the membrane to structural cable. When membrane moves roof, thus, structural behavior of sliding carriage, which may contain various shapes with friction coefficients, should be investigated by vertical load as well as horizontal load. Nummerical simulation of sliding carriage prototypes, in this research, were performed by incrementation of vertical load and horizontal load as well. Consequently, this paper evaluated proper shapes of inner holder of Sliding carriage and evaluated the effective contact area of inner hold.

• 한국건설관리학회:학술대회논문집
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• 한국건설관리학회 2001년도 학술대회지
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• pp.214-221
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• 2001

인천국제공항 교통센터의 Great Hall은 3차원의 입체적 곡면 Truss로 구성되어 있고, Great Hall Roof Truss는 최대 경간162m, 480Ton인 Truss을 포함한 13개의 Main Steel Truss로 구성되어 있다. Great Hall Roof Truss는 총 중량 6,300Ton, 9,600 Pieces로 1개의 절점당 최대 13개의 다른 부재가 접합하게 되어 있고, 12개의 Fabric 기초에 의해 지지된다. 경제적인 효과와 공기적 측면을 고려하여 기존 재래식(가설 Bent) 공법보다 Block화 공법 및 Sliding공법을 채택하였다. Roof 구조물은 3,550Ton과 2,700Ton 중량인 두 Block으로 나누고 구조물 외부에 설치 된 Giant Sleigh에 선 조립 후 Tandem Pulling Jack과 Strand를 이용하여 181m를 Sliding하여 본 구조물의 위치에 설치되었다.

• 한국건축시공학회:학술대회논문집
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• 한국건축시공학회 2010년도 춘계 학술논문 발표대회 1부
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• pp.13-16
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• 2010

This study is an Investigation on the Watertightness Properties of Rain-Block System on the Sliding-Roof Joint of Large-Span Membrane Structures. In this experimental, we test the watertightness performance of joint part of sliding door in roof of large span membrane structure(for pilot project) under environment of rain and wind. A shape of rain water blocking systems of joint part in sliding door verifies the defects and effects of water leakage prevention in precipitation with the wind conditions. For obtaining watertightness of large span membrane structures, it is necessary quality of joints and performance, and quality of membrane material of a retractable roof as well as a closed roof. Also, for obtaining quality in joints, it is essential to make a watertightness guideline for design of large-span membrane.

• 한국건축시공학회:학술대회논문집
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• 한국건축시공학회 2011년도 추계 학술논문 발표대회
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• pp.131-132
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• 2011

Non-working days owing to climatic factors have been negatively affected in productivity of construction, such as delays of project completion times, decrease productivity of construction. Especially non-working days of steel erection work is about 58 days, it is influenced deleteriously to estimating uncertain construction duration. To solve this problem, Construction Factory(CF) and sliding roof system installed CF's upper side are developed in korea recently. This study is proposed the design of sliding roof system through assess relation of requirements and technical characteristics using Quality Function Deployment(QFD). The basis data for applying QFD is collected from literature reviews and questionnaires/interviews targeting system developer, experts and researchers.

• 한국건축시공학회지
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• 제10권3호
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• pp.129-136
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• 2010

지붕 개폐형태의 대공간 막 구조물은 멀티미디어적인 요소 및 전천후 공간을 활용할 수 있지만, 다수의 연결 조인트에 의해 구조물이 형성되므로 누수에 취약한 문제점이 있다. 특히 개폐식 지붕 맞댐부위의 우수차단 시스템은 우수의 직접적인 유입을 차단하는 역할을 하고 있으므로 바람을 동반한 강우환경에서도 수밀성능이 요구된다. 따라서 상기의 환경 조건을 부여한 수밀성 실험을 통하여 우수차단 시스템의 디테일에 대한 수밀성능을 평가하고자 한다. 실험 결과, 모든 실험체에서 누수가 발생하였으며, 우수의 유입경로는 동일한 것으로 확인되었다. 특히, 바람에 의하여 물입자들이 구조물 내부로 들이치는 현상이 주원인이므로 이를 보완한 새로운 우수차단 시스템의 디테일이 요구된다. 이 연구를 통해 강우 환경과 바람 환경을 동시에 부여하였을 때 발생될 수 있는 우수 침입 경로를 확인하였으며, 수밀 성능 확보 유무가 사전에 검토되어 져야함을 알 수 있었다. 또한, 디테일을 사전에 작성하여 모형 수밀성 시험을 반드시 시행한 후 그 결과에 따라 설계 디테일의 변경, 개선, 보완시공을 하여야 할 것이다.

• Computers and Concrete
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• 제31권1호
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• pp.9-21
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• 2023

The published studies usually used analytical method, numerical methods or experimental method to determine the stress-strain state and displacement of the single-layer or multi-layer curved shell types, but with a small scale model. However, a full scale multi-layer doubly curved concrete shell roof model should be researched. This paper presents the results of the experiment and simulation analysis involving stress-strain state, sliding between layers, the formation and development of the full scale double-layer doubly curved concrete shell roof when this shell begins to crack. The results of the this study have constructed the load-sliding strain relationship; strain diagram; stress diagram in the shell layers; the N_x, N_y membrane force diagram and deflection of shell. Thisresults by experimental method on a full scale model of concrete have clarified the working of multi-layer doubly curved concrete shell roof. The experimental and simulation results are compared with each other and compared with the Sap2000 software.

• 한국공간구조학회논문집
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• 제18권1호
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• pp.93-100
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• 2018

The retractable roof structures have actions of various types of loads and external forces depending on the retraction and operation conditions of the roof in terms of efficiency of control and maintenance as the aspect of structural plan. In particular, there is a need for studies on the establishment of retraction controlled wind velocity to maintain the stable control and usability of roof structure against strong winds or sudden gusts during the retraction of the roof. In this paper, it was intended to provide basic materials for the development of guidelines on the operation and maintenance of domestic retractable buildings with large space by analyzing the factors affecting the retraction controlled wind velocity for the overseas stadiums with the large spatial retractable roof structures where the sliding system was applied on the steel retractable systems. As a result, the controlled wind velocity tends to decrease as the retractable roof area increases. On the other hand, the controlled wind velocity tends to increase as the retraction time increases. In addition, in the space-grid roof structures, the spherical roof structures type showed the average controlled wind velocity of 10m/sec lower than that of 17.3m/sec for curved-roof structure type, and in the curved-roof structure type, the truss roof structure showed the average controlled wind velocity of 8.9m/sec which is lower than that of 17.3m/sec for the space for the space-grid roof structure.

• 전산구조공학
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• 제14권3호
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• pp.103-124
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• 2001

• 소성∙가공
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• 제27권3호
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• pp.160-164
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• 2018

The success of warm forming of Mg alloy sheets is very dependent on its frictional behavior at elevated temperatures. The effects of contact pressure and sliding length on the frictional characteristics of AZ31B Mg alloy sheet were investigated at elevated temperature and at room temperature. The contact pressure range for the friction test was determined through FE analysis of the roof panel which is a candidate for Mg alloy application. According to the experimental results, the frictional behavior of the Mg alloy sheet is equally highly influenced by both sliding length and contact pressure at room temperature. At elevated temperatures, however, the sliding length has a more dominant influence on the frictional characteristics of the Mg alloy sheet than the contact pressure, if the contact pressure is lower than a certain level.

• 한국주거학회논문집
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• 제15권5호
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• pp.85-96
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• 2004

The purpose of this study was to (md out the characteristics of the residential house in Ulleung Island in terms of building materials, structure and construction method, structural design by actual field surveys. This study found several facts; First, the house was classified into the log house and mud-wall house according to building material for wall structure. The log house prevailed in the early days of the settlement in the island because of affulent timber materials available around. However, the mud wall house became a popular type in later days because of the depletion of timber materials. Second, the Udeki wall was an unique installation reflecting the severe climate conditions of Ulleung Island. However, many aspects of the Udeki wall was changed according to the change of living style and the introduction of modem heating systems in terms of its function, size, building material, layout position etc. Third, the roofing material also has been changed from materials available locally to slate materials transported from the mainland. Fourth, the bamboo slender-ribbed door as a single-swing door type was popular and later time the single-sliding door or three ribbed door was widely used in rooms installed later instead. Fifth, the roof was placed over the room, kitchen, and Chukdam (outer wall) and this was a resonable way to cope with heavy snowfalls in the winter season in Ulleung Island.