• 제목/요약/키워드: frame work

검색결과 804건 처리시간 0.023초

Case Study on Frame Work of Deck Floor in High Rise Apartments (고층 아파트의 데크층 골조공사 시공사례)

  • 이동환;권오홍
    • Magazine of the Korea Concrete Institute
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    • 제14권6호
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    • pp.96-101
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    • 2002
  • 최근 들어 기술ㆍ설계능력의 비약적 발전과 부동산 수요증가에 따른 지가 상승 및 용지 부족으로 인한 부지의 효율적 이용 방안으로 각종 건축물의 대형화, 고층화, 다양화가 되어 고밀도 철근배근의 건축 구조물은 점차 증가하고 있는 실정이다.(중략)

Steel Frame Clamp Deformation and Performance Check based on Clamping Orientation (철골용 클램프 시공방향에 따른 변형 및 성능확인)

  • Mo, Seung-Un;Lim, Nam-Gi
    • Journal of the Korea Institute of Building Construction
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    • 제22권2호
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    • pp.161-169
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    • 2022
  • The government [3] specifies steel pipe scaffolding as conventional scaffolding and is promoting the installation of system scaffolding, an integrated work platform, and avoidance of the use of steel pipe scaffolding as much as possible. However, in places where equipment cannot enter, such as power plants and plant sites, places the structure is complex, and places where scaffolding cannot be stacked on the ground, there is no choice but to install steel pipe scaffolding. When installing steel pipe scaffolding on an H-beam structure at a high place, the performance of the steel frame clamp is very important in order to form a work space which workers can work safely. In this study, the displacement magnitude and tensile load of members in each installation direction of the clamp for steel frame were verified through performance tests and structural analysis modeling. As a result, it was confirmed that the performance for each installation direction satisfies the safety certification standard tensile load of 10,000N. Although the performance value is satisfactory, deformation of the attachment pressing bolt was verified and was confirmed to have minimal deformation. Thus, to ensure the load is properly to the attachment body, the clamp for a steel frame must be installed in the direction in which the load is transmitted.

Finite Element Analysis of Piezocone Test II (피에조콘 시험의 유한요소 해석 II)

  • 김대규;김낙경
    • Journal of the Korean Geotechnical Society
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    • 제16권4호
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    • pp.191-199
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    • 2000
  • In this research, the finite element analysis of piezocone penetration and dissipation tests has been conducted using the anisotropic elastoplastic-viscoplastic bounding surface model, virtual work equation, and theory of mixtures formulated in the Up[dated Lagrangian reference frame for the large deformation and finite strain nature of piezocone penetration. The formulated equations have been implemented into a finite element program. The cone resistance, excess pore water pressure, and dissipation of excess pore water pressure from the finite element analysis have been compared and investigated. An effective simulation could be performed with the use of the anisotropic and viscous soil model. The finite element formulations and the results are described in part 'I' and part 'II' respectively.

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Development of Labor Productivity Index for Steel Construction (철골공사의 노동생산지수 개발)

  • Kang Byoung-Ryoul;Kim Ki-Sung;Um Ik-Joon;Koo Kyo-Jin
    • Proceedings of the Korean Institute Of Construction Engineering and Management
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    • 한국건설관리학회 2004년도 제5회 정기학술발표대회 논문집
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    • pp.353-357
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    • 2004
  • The construction competition is more deepened with the enterprise possibility increase which it follows in the regulation relaxation back against the construction market penetration which carries and the instability of market is added an extra weight and it solves the aspect where also the profitability which is caused by with low price bidding decreases. Against a productivity with the overcome plan it is researched plentifully and the far for a productivity improvement, there is so far to construction, the productivity being used with only include meaning, is to a practical affairs and the application ver)r as the level which is feeble is a possibility of doing. It is like that and the research develops the producing district possibility of new steel-frame work and in the actuality which sees the production volume of steel-frame work and a construction accomplishment process effectively and to be right numerical figures it does it plans it controls and manages the place ultimate objective which it puts.

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Intranet Based Intelligent Messenger connection research (인트라넷 기반 지능형 메신저 관련연구)

  • Bang Kee-Chun
    • Journal of Digital Contents Society
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    • 제5권4호
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    • pp.283-288
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    • 2004
  • This paper presents research in intelligent massenger technique for Cyber University to support accessing university database. Proposed techniques enables better communication between students and professons by using intelligent messenger. Intranet based massenger support simple message transfer and multimedia chatting service within homogeneous network or members in same group. Using niversity database it provide personalize information for each different user demand needs and through managing technique user could effectively organize members of group. To embody intelligent massenger, JMF(Java Media Frame Work), RMI(Remote Method Invocation), XML techniques were proposed and in result constructing effective community.

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Experimental work on seismic behavior of various types of masonry infilled RC frames

  • Misir, I. Serkan;Ozcelik, Ozgur;Girgin, Sadik Can;Kahraman, Serap
    • Structural Engineering and Mechanics
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    • 제44권6호
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    • pp.763-774
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    • 2012
  • Reinforced concrete frame structures with masonry infill walls constitute the significant portion of the building stock in Turkey. Therefore it is very important to understand the behavior of masonry infill frame structures under earthquake loads. This study presents an experimental work performed on reinforced concrete (RC) frames with different types of masonry infills, namely standard and locked bricks. Earthquake effects are induced on the RC frames by quasi-static tests. Results obtained from different frames are compared with each other through various stiffness, strength, and energy related parameters. It is shown that locked bricks may prove useful in decreasing the problems related to horizontal and vertical irregularities defined in building codes. Moreover tests show that locked brick infills maintain their integrity up to very high drift levels, showing that they may have a potential in reducing injuries and fatalities related to falling hazards during severe ground shakings.

Trajectory Rectification of Marker using Confidence Model (신뢰도 모델을 이용한 마커 궤적 재조정)

  • Ahn, Junghyun;Jang, Mijung;Wohn, Kwangyun
    • Journal of the Korea Computer Graphics Society
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    • 제8권3호
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    • pp.17-23
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    • 2002
  • Motion capture system is widely used nowadays in the entertainment industry like movies, computer games and broadcasting. This system consist of several high resolution and high speed CCD cameras and expensive frame grabbing hardware for image acquisition. KAIST VR laboratory focused on low cost system for a few years and have been developed a LAN based optical motion capture system. But, by using low cost system some problems like occlusion, noise and swapping of markers' trajectory can be occurred. And more labor intensive work is needed for post-processing process. In this thesis, we propose a trajectory rectification algorithm by confidence model of markers attached on actor. Confidence model is based on graph structure and consist of linkage, marker and frame confidence. To reduce the manual work in post-processing, we have to reconstruct the marker graph by maximizing the frame confidence.

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Airtightness of Light-Frame Wood Houses built in Daejeon and Chungnam Area

  • Jang, Sang-sik;Ha, Been
    • Journal of the Korean Wood Science and Technology
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    • 제45권2호
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    • pp.147-158
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    • 2017
  • Among the energy consumption in building, the heating energy takes the largest part. Therefore, it is important to minimize the heat energy loss in building for the reduction of overall energy use in construction. The most important points for the minimization of energy loss in building are insulation and airtightness. Especially, in wood houses, airtightness is very important for energy saving as well as increase of durability. However, the researches on airtightness of wood buildings have been started recently and are very deficient especially in Korea. In this study, air leakage properties and airtightness performance were evaluated for light-frame wood houses built in Daejeon and Chungnam area. Total 7 houses were evaluated, among which four houses (Case 1 to Case 4) were in the construction stage before interior finish and the other three houses (Case 5 to Case 7) were after completion of construction work. The tests for airtightness were conducted by pressurization-depressurization method, and the factors included in the measurements includes air leakage rate at 50 Pa (CMH50), air change rate at 50 Pa (ACH50), equivalent leakage area (EqLA) and EqLA per floor area. As a result of this study, key air leakage points in wood houses were found to be the gaps between floor and wall, the holes for wiring and plumbing, the double glasses windows and the entrance doors. The average value of ACH50 for the houses after completion of construction work was $3.5h^{-1}$ that was similar to Europe standard ($3.0h^{-1}$). ACH50 was proportional to EqLA per floor area but inversely proportional to the internal volume, the net floor area and the area of window.

A Case Study on the Appropriate Construction Personnel of the Typical Floor of Apattment Frame Construction Using the Queueing Model (대기행렬 모형을 활용한 아파트 골조공사 기준층 인적 자원관리 선정사례에 관한 연구)

  • Lee, JeongWon;Kim, BoHee;Ham, NamHyuk;Kim, JaeJun
    • Korean Journal of Construction Engineering and Management
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    • 제23권6호
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    • pp.3-14
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    • 2022
  • Quantitative analysis of the number of construction workers and construction period can present a new standard for appropriate personnel. This study presents a Queueing model that predicts the execution time of work procedures, the most important factor among work efficiency indicators. During the working cycle of apartment frame construction the same process tends to be repeated the volume of contruction. Based on these characteristics, this study used a Queueing Model and analyzed reference layer cycle of the delayed frame construction. After adjusting the number of people and the construction period, the performance of the model was analyzed and suggested. This study aims to support the decision making of personnel distribution according to the volume of construction by performing a performance analysis of the Queueing Model.