• Title/Summary/Keyword: High-rise building

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Modification of CFD results for Wind Environment in Urban area with Tree Canopy Model (Canopy Model 적용을 통한 도심지 풍환경 예측 CFD 시뮬레이션 결과의 보정)

  • Jung, Su-Hyeon;Hong, In-Pyo;Choi, Jong-Kyu;Song, Doo-Sam
    • Journal of the Korean Solar Energy Society
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    • v.32 no.spc3
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    • pp.185-193
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    • 2012
  • Recently rapid urbanization facilitates development of high-rise building complex including apartment and office building in urban area. Many problems related with high -rise building are reported. Especially, unpleasant strong winds in pedestrian area are frequently encountered around the high-rise building. CFD simulation methods are used to analyze the wind environment of pedestrian level in high-rise building block. However, the results show differences between CFD and measurement. This difference is attributed to improper use of CFD. Conventional CFD simulation for wind environment around high-rise building does not describe the effect of trees, shrubs and plants near ground which affect the wind environment of pedestrian level. Canopy model can be used to reproduce the aerodynamic effects of trees, shrubs and plants near ground. In this paper, CFD simulation methods coupled with the tree canopy model to predict wind environment of pedestrian level in high-rise residential building block were suggested and the validity was analyzed by comparison between measurement and CFD results.

The Research and Application of Innovative High Efficient Construction Technologies in Super High Rise Steel Structure Building

  • Dai, Lixian;Liao, Biao
    • International Journal of High-Rise Buildings
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    • v.3 no.3
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    • pp.205-214
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    • 2014
  • The super high rise building construction is characterized by a large quantity of engineering works and structural components, high demanding of construction technology and complex cross operations. As the height of super high rise building increases, the construction difficulties increase, it is challenging the steel structural building construction technology. In this paper, the key technologies in the construction of Chinese modern super high rise steel structure building have been studied. The innovative tower crane supporting frame suspension disassembly technology has been developed to allow the crane supporting frame to turnover in the air without occupying materials stockyard. A new self-elevating platform technique which is capable of striding over structural barriers has been developed. This new technology allows the platform to be self-elevated along variable cross section column with a maximum 600 mm size change. A new automatic submerged arc welding technology has also been developed to ensure the process continuity and quality stability of welding job on the construction site.

A Study on the Envelop to Improve Interior Environment Performance of High-rise Residential Building (초고층 주상복합 건물의 실내 환경 성능 향상을 위한 외피부 개선방향에 관한 연구)

  • Park, Sang-Hoon;Cho, Ga-Young;Lee, Sun-Woo;Jo, Jae-Hun;Yeo, Myoung-Souk;Kim, Kwang-Woo
    • Proceeding of Spring/Autumn Annual Conference of KHA
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    • 2006.11a
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    • pp.306-309
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    • 2006
  • The architectural difference between the existing residence and high-rise residential building causes changes on environmental conditions such as ventilation and insulation. The object of this study is to present the improvement on envelop of high-rise residential buildings to reduce heating and cooling load. To improve the environmental performance of envelop, it is necessary to modify envelop vent system and ensure intermediate space. In this study, the shape of vents in high-rise residential buildings has been inspected, and the survey about the interior environmental conditions related to the envelop of high-rise residential building has been conducted. Environmental measurement has been done to examine out door air quality for natural ventilation.

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Analysis of three dimensional equivalent static wind loads of symmetric high-rise buildings based on wind tunnel tests

  • Liang, Shuguo;Zou, Lianghao;Wang, Dahai;Huang, Guoqing
    • Wind and Structures
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    • v.19 no.5
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    • pp.565-583
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    • 2014
  • Using synchronous surface pressures from the wind tunnel test, the three dimensional wind load models of high-rise buildings are established. Furthermore, the internal force responses of symmetric high-rise buildings in along-wind, across-wind and torsional directions are evaluated based on mode acceleration method, which expresses the restoring force as the summation of quasi-static force and inertia force components. Accordingly the calculation methods of equivalent static wind loads, in which the contributions of the higher modes can be considered, of symmetric high-rise buildings in along-wind, across-wind and torsional directions are deduced based on internal forces equivalence. Finally the equivalent static wind loads of an actual symmetric high-rise building are obtained by this method, and compared with the along-wind equivalent static wind loads obtained by China National Standard.

Overview of Seismic Loads and Application of Local Code Provisions for Tall Buildings in Baku, Azerbaijan

  • Choi, Hi Sun;Sze, James;Ihtiyar, Onur;Joseph, Leonard
    • International Journal of High-Rise Buildings
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    • v.3 no.1
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    • pp.65-71
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    • 2014
  • Baku, the capital of Azerbaijan, has seen a boom in construction in recent years. The old Baku city has been rapidly transforming into a new hub of high-rise buildings and lively cultural centers hosting the Euro Vision Song Contest in 2012 and European Games in 2015. A major population shift to Baku from its suburbs and the countryside has resulted in the doubling of Baku's population in the 4 years between 2009 and 2013. As of January 2013, Baku's population reached four million people, 43% of the citizens in Azerbaijan according to The State Statistical Committee of Azerbaijan. With this trend, the city needs more high-rise buildings to accommodate rapidly increasing demands for more housing and business space. Until the Azerbaijan Seismic Building Code was published in 2010 and became effective, many different seismic criteria, in terms of building codes and seismic intensities, were used for all new high-rise projects in Baku. Some designers used the SNIP (Russian) code with seismic level 9 or level 8 with 1 point penalty. Others used the Turkish code with Seismic Zone 1, UBC 97 with Zone 2 through 4, or IBC with Sa = 0.75 g through 1.0 g. The seismic intensity is now clarified with the Azerbaijan Seismic Building Code. However, the Azerbaijan Seismic Building Code is appropriate for low-rise buildings applications but may be inappropriate for high-rise project applications. This is because the code-defined response spectrum yields unrealistically conservative seismic forces for high-rise buildings with long periods, as compared to those determined by other internationally accepted building codes. This paper provides observations and recommendations for code-based seismic load assessment of high-rise buildings in the Baku area.

Structural Design of Nakanoshima Festival Tower West that Achieved High-Grade Seismic Performance

  • Kumano, Takehito;Yoshida, Satoshi;Saburi, Kazuhiro
    • International Journal of High-Rise Buildings
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    • v.6 no.3
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    • pp.217-226
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    • 2017
  • This paper summarizes the structural concept and design of the "Nakanoshima Festival Tower West" in Osaka, Japan, which is 200m high and has a super-high damping system. Its superstructure is mainly composed of a central core and outer tube frames. It has a bottom truss structure at the boundary between the low-rise and mid-rise sections of the building, where the column arrangement is changed. Besides, the high-rise section of the building has a neck truss structure. These truss structures smoothly transfer the axial forces of the columns and reduce the flexural deformations induced by horizontal loads. Oil dampers with extremely high damping capacity are installed in the rigid walls named the "Big Wall Frames" of the low-rise section. Moreover, many braces and damping devices are well arranged in the center core of each story. The damping effects of these devices ensure that all structural members are remain within the elastic range and that story drifts are within 1/150 in large earthquakes. This super-high damping structure in the low-rise section is named the "Damping Layer". The whole structural system is named the "Super Damping Structure". The whole structural systems enhance the building's safety, comfort and Business Continuity Planning (BCP) under large earthquakes.

A Study on the Fire Safety of High-rise Office Buildings in Respect of Architectural Design (고층 사무소건축의 화재안전에 관한 건축계획적 연구)

  • 이강훈
    • Fire Science and Engineering
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    • v.8 no.2
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    • pp.3-15
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    • 1994
  • The purpose of this paper is to present refernce data to be considered in designing for the fire safety of high-rise office buildings. This paper deals with the characteristics of high-rise office buildings in the fire safety aspects, the basic principles for the fire safety of high-rise office building design, and this study is focused particularly on the location of the escape route of core plan for fire safety in high-rise office buildings.

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Research on the Effect of High-Rise Commercial Building Construction on Land Value of Shanghai in the 1920s

  • Sun, Le
    • International Journal of High-Rise Buildings
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    • v.5 no.2
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    • pp.145-154
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    • 2016
  • When the tall office building first appeared in the street of Chicago in the end of Nineteenth Century, this building type has become a commodity in the development of real estate and been defined as a machine that makes the land pay. With the investigation of land price samples of the high-rise commercial buildings and the overall land price development in the central district of International Settlement in Shanghai, this paper tries to examine the site selection and construction of high-rise commercial buildings have important positive effect on the land value development.

A Study on the Admission Space Planning of a Major Building in Super High-rise Apartment (초고층 아파트 주동의 진입 공간 계획에 관한 연구)

  • Roh, Yeon-Soo;Ahn, Eun-Hee;Lee, Hyen-Hee
    • Proceedings of the Korean Institute of Interior Design Conference
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    • 2005.10a
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    • pp.39-43
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    • 2005
  • Here this Study is purposed importance of Public area and attend to planning of Admission Space so foster the growth of public area in super high - rise building apartment at present that, for contribution so Consider about Admission Space planning purpose of a Major building in super high - rise building apartment. The process of this Study 1) Consider Indispensable action and Choice action in theory of 'Jan Gehl'. 2) Express one's condolence about two housing development of super high - rise Apartment in Busan City. 3) Analysis by theory of 'Jan Gehl'. about two housing development of super high - rise Apartment in Busan City. 4) I have a result as being Comparison two housing development

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