• Title/Summary/Keyword: spatial form

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기하학적 비선형해석을 이용한 비정형 막 구조물의 형상탐색과 인터페이스 기법 (Form-finding of Free-form Membrane Structure based on Geometrically Non-linear Analysis and Interface method)

  • 김지인;나유미;강주원;이재홍
    • 한국공간구조학회논문집
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    • 제12권1호
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    • pp.77-85
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    • 2012
  • 막 구조물은 연성의 막에 초기 장력을 주고 외관의 강성을 늘림으로써 외부하중에 안정된 형태를 유지하는 구조물로 두께를 얇게 하여 대공간 구조에 많이 채택된다. 이러한 막 구조는 자유로운 곡선을 표현할 수 있는 특성이 있어, 구조적 형태의 선정은 매우 중요하다. 이에 본 논문에서는 넙스를 기저함수로 하는 비정형 곡면으로 형상을 표현하고, 최적의 곡면 형상 탐색을 위한 대변형 결과값 도출을 위해 기하학적 비선형을 고려한 유한요소해석법을 제안하였다. 또한, 형상 탐색 결과로 나타난 곡면의 형상 근사화의 최소화를 위해 유한 요소망으로 표현된 최종 형상을 다시 넙스로 구현하는 인터페이스 기법을 제안하여, 비정형 막 구조물의 최적 곡면을 표현하였다.

낙엽송 간벌 임분의 공간 이미지 분석 (Spatial Images toward Thinning Systems on Larix Forest Stands)

  • 송형섭;명재갑;박민우;손종은;이선
    • 농업과학연구
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    • 제27권1호
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    • pp.5-12
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    • 2000
  • The main purpose of this study is to obtain spatial image information toward forest thinning process in Larix forest stands. Thirteen different alternatives were simulated to visualize on the basis of actual thinning work photos. The options were illustrated as photos produced by photoshop program. Each alternatives were evaluated by forest visitor group with total 244 respondents after reliability test. Spatial images of 13 thinning photos were measured by 12 semantic differential scale as broad -narrow, ordered-tangled, friendly-unfriendly, monotonous-divers, dry-refreshing, relieved -stifling, healthy-sickly, uniform-scattered, dead-alive, opened-closed, bent-straight, and beautiful-ugly. In comparison with thinning stands and natural stands, thinning works were visual improvement effects of spatial images. Seemingly, this trend is due to definite form beauty, straight and clear length form of coniferous forest, As can be expected, slash and downwood were negatively related to improvement effects of spatial images. The 60% ratio of stem/ tree height and 450-950 trees/ha was positive in attraction of spatial images. Results indicate how to conduct forest thinning system for spatial images on Larix forest stands.

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어청도 어촌취락의 공간구조와 주거형태에 관한 연구 (Residential Quarter Organization and Housing Spatial Form of Fishing Village in Eocheong-do Island)

  • 박중신
    • 한국농촌건축학회논문집
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    • 제13권1호
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    • pp.29-36
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    • 2011
  • This paper aims to clarify the residential quarter organization and housing spatial form of fishing village in Eocheong-do Island. The results are as follows. First, island residential quarter is formed along the coastline, the detached house and the shop house are mainly located in the front of the coastline. Second, the inclination road which connects the northernmost end part and the seashore road is maintained as a road system of a residential quarter from the Japanese colony term until now. Third, It is the feature that Eocheong-do island has the wide width of the front of a site compared with other island residential quarters. Therefore, the frontage wide of a building is also large. Fourth, the entrance of the building where the frontage is mainly located right in the middle, and each rooms are located in the surroundings of it. Finally, the typical community space of Eocheong-do island is Pyeongsang(平床). Pyeongsang is space which receives various functions in inhabitants' life cycle.

축력과 모멘트를 동시에 받는 FREE NODE의 실험적 평가 (Experimental Evaluation of FREE NODE with Axial Load and Moment for Single Layer Free-Form Structures)

  • 오진탁;정광량;김도현
    • 한국공간구조학회논문집
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    • 제14권1호
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    • pp.51-59
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    • 2014
  • Single layer free-form structures are being highlighted in the field of architecture due to its attractive shape. In these structures, node connecting system is very important because the node must resist bending and axial stress simultaneously. So the local and global stabilities of entire structure can be determined by the stiffness of node system. In this study, therefore, various types of bending test with axial force were performed. As a result, bending capacity with axial force of a new spherical node for free-form structure could be performed and structural capacities were checked to use in real structure.

스튜워트 플랫폼 구조를 이용한 공간형 3자유도 병렬 메커니즘의 기구학 특성 분석 (Analysis on Kinematic Characteristics for Spatial 3-DOF Parallel Mechanisms Employing Stewart Platform Structure)

  • 이석희;이정헌;김희국;이병주
    • 한국정밀공학회지
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    • 제22권8호
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    • pp.118-127
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    • 2005
  • A spatial 3 degrees-of-freedom mechanism employing Stewart Platform structure is proposed: the mechanism maintains the 3- RRPS structure of Stewart Platform but has an additional passive PRR serial sub-chain at the center area of the mechanism in order to constrain the output motion of the mechanism within the output motion space of the added PRR serial subchain. The forward and reverse position analyses of the mechanism are performed. Then the mechanism having both the forward and the reverse closed-form solutions is suggested and its closed form solutions are derived. It is confirmed, through the kinematic analysis of those two proposed mechanisms via kinematic isotropic index, that both the proposed mechanisms have fairly good kinematic characteristics compared to the existing spatial 3-DOF mechanisms in literature.

A Comparative Study on Land Use and Spatial form of TOD Models in The United States and Japan, from a City-Scale Perspective

  • Hong Yuan;Yongming Zhang;Na Xu;Siting Chen
    • 국제초고층학회논문집
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    • 제12권1호
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    • pp.49-61
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    • 2023
  • The transit-oriented development (TOD) model can effectively help to solve urban problems and promote sustainable urban development. The United States and Japan are widely considered the earliest two countries to start TOD practices; however, the origins of TOD models in the two countries were different. The TOD practices in the two countries formed distinct characteristics, yet their differences have been underexplored. This study aims to grasp the characteristics of the TOD model in the two countries through a systematic comparative analysis of 10 typical cities in the United States and Japan that have adopted the TOD model. This paper compares the case cities' three key aspects of the TOD model: public transit system, spatial form, and land use, and summarizes the characteristics of TOD models in the two countries from a city-level perspective, to help deepen the global understanding of TOD.

1990년대 이후 미술관 전시공간 형태의 변화에 따른 관람자의 작품인지에 관한 연구 - 글립토텍을 중심으로 한 정형전시공간과 비정형편시공간 - (A Study on the Public's Perception on Accordance with Change of Exhibition Space in an Art museum after 1990's - The Formal Form of Exibition Space and the Informal Form of Exhibition space in Glytothek Munchen -)

  • 이정아;문정묵
    • 한국실내디자인학회:학술대회논문집
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    • 한국실내디자인학회 2008년도 춘계학술발표대회 논문집
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    • pp.74-77
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    • 2008
  • In the relationship between exhibition space and art work in art museum, the Pluralism on the late of the 20th century made the new form of exhibition space to be appeared on the stage. Even if formal exhibition space that emphasized itself as a non-spatial background is currently being continued, the informal form of exhibition space is coming to the new art museums, especially after 1990's. This study is to understand how the advent of new designed the informal form of exhibition space in the Glytothek museum(the formal form of exhibition space) design a new paradigm In the relation between the exhibition space and art work in conjunction with public's perception. To do this, it is made clear that the Glytothek museum(the formal form of exhibition space) simply has played a role of non-spatial background. In other hands, the new designed informal form of exhibition space that is mainly presented after 1990's begins to Interrupt the public's perception of art work, changing it's meaning through a spatiality.

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몽골 겔 건축의 공간구성과 구조적 구성요소에 관한 연구 (A Study on Spatial Composition and Elements of Ger Architecture in Mongolia)

  • 정건채
    • 한국농촌건축학회논문집
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    • 제16권1호
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    • pp.111-117
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    • 2014
  • The aim of this study is to find out the pattern of Ger form, inner spatial composition of Mongolian Ger house, and to take a dig at the structural or symbolic elements of nomadic architecture of Ger. To the point of view of corresponding to living and space of housing, remarkable characteristics of Ger Architecture is able to pull down and recombine the structures of nomadic house. Even though urbanization of Mongolia has spreading rapidly in a whole nation, most of people preserves traditional housing pattern within Ger. The ways of survey are to study of traditional home of Mongolia, and then field work at residence or mountain area in Ulan Bator and Gorkhi Terelj National Park area. This survey contains the form, size, structure, spatial composition of living space, structure, and materials. There are three results as follows: First, the form of Ger house is like a pyramidal or crown roof style to approximate to the round shape of it. Usually they had lived in nomadic way of life, so the Ger had a movable and flexible structure. Second, the Ger is easy to build up and deconstruct to move or find a new pasture. Third, the Mongolian Ger structure is composed by mainly five elements that are Khana, Khaalga, Toono, Bagana, and Uni. It has a hierarchy of internal spaces which are classified to gender, orientation, and property.