• 제목/요약/키워드: building surroundings

검색결과 111건 처리시간 0.028초

Evaluation of mode-shape linearization for HFBB analysis of real tall buildings

  • Tse, K.T.;Yu, X.J.;Hitchcock, P.A.
    • Wind and Structures
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    • 제18권4호
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    • pp.423-441
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    • 2014
  • The high frequency base balance (HFBB) technique is a convenient and relatively fast wind tunnel testing technique for predicting wind-induced forces for tall building design. While modern tall building design has seen a number architecturally remarkable buildings constructed recently, the characteristics of those buildings are significantly different to those that were common when the HFBB technique was originally developed. In particular, the prediction of generalized forces for buildings with 3-dimensional mode shapes has a number of inherent uncertainties and challenges that need to be overcome to accurately predict building loads and responses. As an alternative to the more conventional application of general mode shape correction factors, an analysis methodology, referred to as the linear-mode-shape (LMS) method, has been recently developed to allow better estimates of the generalized forces by establishing a new set of centers at which the translational mode shapes are linear. The LMS method was initially evaluated and compared with the methods using mode shape correction factors for a rectangular building, which was wind tunnel tested in isolation in an open terrain for five incident wind angles at $22.5^{\circ}$ increments from $0^{\circ}$ to $90^{\circ}$. The results demonstrated that the LMS method provides more accurate predictions of the wind-induced loads and building responses than the application of mode shape correction factors. The LMS method was subsequently applied to a tall building project in Hong Kong. The building considered in the current study is located in a heavily developed business district and surrounded by tall buildings and mixed terrain. The HFBB results validated the versatility of the LMS method for the structural design of an actual tall building subjected to the varied wind characteristics caused by the surroundings. In comparison, the application of mode shape correction factors in the HFBB analysis did not directly take into account the influence of the site specific characteristics on the actual wind loads, hence their estimates of the building responses have a higher variability.

CFD를 이용하여 건물 외피의 바람에너지에 관한 적용연구 (A Basic Study for Wind Energy of Building Cladding using Computational Fluid Dynamics)

  • 정영배
    • 한국신재생에너지학회:학술대회논문집
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    • 한국신재생에너지학회 2011년도 추계학술대회 초록집
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    • pp.39.2-39.2
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    • 2011
  • The new and renewable energy today has a great interest in all countries around the world. In special it has need more limit of the fossil fuel that needs of low carbon emission among the social necessary conditions. Recently, the high-rise building demand the structural safety, the economic feasibility and the functional design. The high-rise building spends enormous energy and it satisfied the design in solving energy requirements. The requirements of energy for the building depends on the partly form wind energy due to the cladding of the building that came from the surroundings of the high-rise building. In this study of the wind energy, the cladding of the building was assessed a tentative study. The wind energy obtains from several small wind powers that came from the building or the surrounding of the building. In making a cladding the wind energy forms with wind pressure by means of energy transformation methods. The assessment for the building cladding was surrounded of wind speed and wind pressure that was carried out as a result of numerical simulation of wind environment and wind pressure which is coefficient around the high-rise building with the computational fluid dynamics. In case of the obtained wind energy from the pressure of the building cladding was estimated by the simulation of CFD of the building. The wind energy at this case was calculated by energy transform methods: the wind pressure coefficients were obtained from the simulated model for wind environment using CFD as follow. The concept for the factor of $E_f$ was suggested in this study. $$C_p=\frac{P_{surface}}{0.5{\rho}V^{2ref}}$$ $$E_c=C_p{\cdot}E_f$$ Where $C_p$ is wind pressure coefficient from CFD, $E_f$ means energy transformation parameter from the principle of the conservation of energy and $E_c$ means energy from the building cladding. The other wind energy that is $E_p$ was assessed by wind power on the building or building surroundings. In this case the small wind power system was carried out for wind energy on the place with the building and it was simulated by computational fluid dynamics. Therefore the total wind energy in the building was calculated as the follows. $$E=E_c+E_p$$ The energy transformation, which is $E_f$ will need more research and estimation for various wind situation of the building. It is necessary for the assessment to make a comparative study about the wind tunnel test or full scale test.

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The Evolution of Seismic Engineering and Design of Ultra Tall Buildings in China Innovations and Sustainability

  • Wang, Aaron J.
    • 국제초고층학회논문집
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    • 제5권3호
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    • pp.221-232
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    • 2016
  • With the booming of construction and property industries in China, the demand for high-rises and mega-scale buildings with more integrated building functions, open- and tailor-shaped outlooks, better connections to municipal infrastructures, and higher grades of building importance has been increasing in the past two decades. The seismic design and engineering of such modern mega-buildings face engineering challenges such as hazard mitigation of extreme actions and surroundings, integrated structural frameworks and building skins, complex connections, and overall construction efficiency. It is the work of a new generation of civil and structural engineers to enhance engineering efficiency and achieve overall engineering, environmental, and economical effectiveness for these high-rise projects. This paper elaborates the above topics through case studies on the design and construction of four such developments in China. Some rethinking is conducted on evolution in modern seismic engineering and design through innovation to achieve an acceptable level of overall sustainability and building effectiveness.

고교시설 디자인 지표의 적용 분석 연구 - 경기도 고등학교를 중심으로 - (A Study on the Application of Design Indicators of the High School Facilities - Focused on High School in Gyeonggi-do -)

  • 조경식;아이게림
    • 교육시설 논문지
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    • 제24권6호
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    • pp.45-53
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    • 2017
  • The purpose of this study is to provide the fundamental data to improve a school building through comparing and analyzing facilities of high schools located in Gyeonggi - do Province on the basis of the Design Indicator for the Korean Educational Buildings. Two types of high schools were examined for this study. Some of them are high schools selected by Korean Ministry of Education as a school equipped with superior facilities and the others are high schools equipped with general facilities. 8 items such as safety, comfort, the function of education, utilization, the public, eco-friendliness, technology performance, economical efficiency were examined by 5 point Likert scale. Findings showed that all facilities of both types of high schools received high ratings in terms of safety, utilization, and technology performance. However, the evaluation index on 'various used outdoor space' and 'public buildings harmonized with surroundings' of the education function of both types of high schools was low, which implies that the facility related to the education function needs to be improved. It infers that facilities are simplified and harmony with surroundings disappears when altering the design of the school building due to the convenience of building and the problem of the budget. Therefore, these need to be primarily controlled. Additionally, in high schools with general facilities, the evaluation index on 'aesthetic interior and exterior design of comfort', 'the responsive space to the demand for teaching and learning of the function of education', and eco-friendless were so low that these factors need to be considered when designing the school building.

LEED Certification and Its Effectiveness on Urban Heat Island Effect

  • Kim, Hwan-Yong;Gu, Dong-Hwan
    • 한국BIM학회 논문집
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    • 제5권4호
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    • pp.30-36
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    • 2015
  • The Leadership in Energy and Environmental Design (LEED) has provided abundant resources and guidelines for a new project to become a sustainable anchor in the neighborhood. Paired with a range of checklist, LEED has strong influence on the standards for a sustainable building, and it also has played an iconic role in energy-efficient architecture. However, it is still unclear as to whether or not an LEED certified building enhances environmental benefits to its surroundings. If an LEED certification promises a baseline for an eco-friendly building, then a group of these structures should ensure significant environmental benefits to the society. This is the main question of this study, and the authors answer this hypothesis by examining the relationship of LEED certificates and their influence on outdoor temperature, especially in terms of urban heat island effect. The goal of this paper is to analyze the influence of the LEED certification on urban temperature as an indicator of sustainable architecture's regional interactions. If an LEED certificate is regarded as a strong contributor to a sustainable built environment, then a group of these certificates should result in greater benefits to society. To this extent, the authors question if there is any possible relationship between a large concentration of LEED certified sites and the temperature of their surroundings. To properly assess the research direction, Global Moran's I analysis, Local Moran's I analysis, and Hot Spot analysis are implemented to find the clustered areas of LEED certified buildings. For examining relationships between clustered area and its temperature, correlation efficients are calculated.

Biological Characteristics and Preservation of Dokdo Island

  • Kim, Ki-Tai
    • The Korean Journal of Ecology
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    • 제25권1호
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    • pp.59-62
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    • 2002
  • Dokdo, which is located in the middle of the East Sea, is a small island tilth a total area of 0.186 $\textrm{km}^2$. However, this small island, with its mild oceanic climate, has rich bio-resources and picturesque natural surroundings. Dokdo in the crystaline waters and In the central area of the deep sea is a treasury of algaes (sea oak, sea mustard, gulf weed, laver, agar-agar, etc.), molluscs (squid, ear shell, conch, etc.) and fishes (Alaska pollack, anchovy, saucy, herring, etc.). On the other hand, there are a lot of grasses and various kinds of grasses on the land of Dokdo. And a lot of back-tailed gulls (about 20,000 Individuals) live on this island. There have been disputes on the sovereignty over Dokdo between Korea and Japan. Japan has claimed sovereignty over Dokdo since Japan incorporated the island into Japanese territory in 1905 when it occupied the Korean Peninsula by force. Korea governed Dokdo not only before 1905 but also after its liberation in 1945. The Korean government, while heavily financing building facilities like pleas and quays, is endeavoring to preserve the natural surroundings of this island.

친환경 고속도로의 건설 방향 (The Prospects of Highway Road in Consideration of Natural Environment)

  • 전기성;김태수
    • 한국환경복원기술학회지
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    • 제3권3호
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    • pp.105-112
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    • 2000
  • For the purpose of building up the construction prospects of highway in consideration of natural environment. The tree planting and flower seeding in highway road side using native species were offered to natural landscape and resting area landscaping for peoples, and these area were 194place. The tree planting and flower seeding activity is to improve driving circumstances, and to conserve living and natural environment along the highways. And, preparation of ecotone and biotope at the highway surroundings for natural ecosystem conservation is an important activity, and planting of natural plants is generally carried out near wildlife ecoroads in order to give the way for animals. The primary purpose of this tree planting and seeding is not only to reduce environmental pollution, but also to enhance the ecological surroundings of highway circumference. Ultimately, It is essential that the constructive method of highway think over such as ecological environment and road design, surveying and management, construction, highway maintenance etc.

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프랑스 역사기념물과 그 주변 보호·관리제도의 진화: 1913~2016 (The French Evolution of Protection-Management Systems for Historic Monuments and Their Surroundings over One-Hundred Years: 1913-2016)

  • 이수진;류제헌
    • 헤리티지:역사와 과학
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    • 제52권3호
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    • pp.94-111
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    • 2019
  • 본 연구는 지난 100여년간 프랑스 역사기념물과 그 주변 보호 관리제도의 진화 과정을 분석하는 것을 목적으로 하되, 그 보호의 대상과 범위가 확대되면서 도시 지역계획과의 호환성을 증진시켜나가는 과정에 초점을 맞추고자 하였다. 프랑스는 역사기념물(Les monuments historiques) 그 자체는 물론 그 주변까지 함께 보호 관리한다는 측면에서 한국과 공통점을 가지고 있다. 그 기본적인 원리는 국가가 지정하는 역사기념물의 외곽으로부터 반경 500미터 이내에서 계획하는 모든 건축 행위는 공사 이전에 해당 관청의 허가를 받아야 한다는 것이다. 역사기념물(Les monuments historiques)로 분류되는 건축유산의 관리는 '1913년 12월 31일 역사기념물 관련법'을 계기로 시작되어 오늘날까지 다양한 요인으로부터 영향을 받으며 진화를 거듭해왔다. 처음에는 역사기념물을 그 자체만 고려하는 점적 단위로 보호 관리하였지만 1943년부터는 그 주변까지 포함하는 면적 단위로 보호 관리하는 방식으로 발전하였다. 1980년대 초에는 통치 체제가 중앙집권제에서 지방분권제로 전환함에 따라 역사기념물과 그 주변을 보호 관리하는 주체가 중앙에서 지방으로 일부 이전되는 정책적 변화가 있었다. 지방자치단체의 역할이 점차적으로 확대됨에 따라 역사기념물과 그 주변의 보호 관리제도가 도시 지역계획과의 호환성을 높이는 동시에 환경의 지속가능성을 중시하는 방향으로 진화되어왔다. 프랑스의 역사기념물 보호 관리제도는 애초부터 국가 주도적으로 공공의 이익을 우선시하여 규제를 중심으로 하는 방식이었지만, 지방분권화를 계기로 중앙의 감독 하에 지역 주체가 자율적으로 관리하는 방식으로 발전해오고 있는 것이다. 하지만 오늘날 프랑스의 역사기념물 보호 관리제도는 중앙의 조정과 중재 속에서 과거의 엄격한 보호 관리 방식의 기조를 여전히 유지하며 조금 더 유연하게 주변 환경과 조화를 도모하는 방향으로 진화하고 있다는 전체적인 특징을 가지고 있다.

퇴계(退溪)의 건축관(建築觀)과 도산서당(陶山書堂) (Toege and the Architecture of Dosan Sodang)

  • 김동욱
    • 건축역사연구
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    • 제5권1호
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    • pp.18-38
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    • 1996
  • Dosan Sedans was built in 1560, when Toege I Whang(1500-1571) was 60, as a place in which to study and teach disciples. The building was built to a humble 3-kan system which was a popular form of sodang in the 16th century, There found an enlargement of space by attaching outer walls around three sides which was designed by Toege himself. Minimum in space, moderation in form, conrol of embellishment, hermit scholar's aethetics became basic concept of the architecture of Dosan Sodang. After completion of sodang, Toege wrote many poems about pond, walls, flower bed and natural surroundings like sheer cliff, winding river and even rural daily life of villagers around the building. It could be sud that ,for Toege, architecture was cogniged as a whole complex of building and its surrounding natural, artificial and human circumstances.

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Placemaking in the High-Rise City: Architectural and Urban Design Analyses

  • Al-Kodmany, Kheir
    • 국제초고층학회논문집
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    • 제2권2호
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    • pp.153-169
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    • 2013
  • The past decade has witnessed an unprecedented boom in tall and supertall building construction worldwide (Wood, 2011). Because of their massive bulk and soaring height, tall buildings often create serious placemaking problems. Employing extensive photographs and sketches, this paper examines architectural and urban design strategies that improve placemaking with tall buildings. The paper embraces a comprehensive approach that considers the relationship of tall buildings to their surroundings at the macro and micro scales. It also considers non-physical factors that tall buildings need to address, such as the social life the building creates. It is hoped that the placemaking factors discussed in this article will provide the required groundwork for future research that explores regulations and codes that foster placemaking with tall buildings.