• Title/Summary/Keyword: High-rise building

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Preliminary study for Vertical Dynamic Site Layout Planning of High-Rise Building Construction (고층공사 가설시설물의 동적수직배치 최적화를 위한 기초연구)

  • Pyo, Kiyoun;Lee, Dongmin;Lim, Hyunsu;Cho, Hunhee;Kang, Kyung-In
    • Proceedings of the Korean Institute of Building Construction Conference
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    • 2018.05a
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    • pp.39-40
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    • 2018
  • The goal of site layout planning(SLP) is to maximize the productivity and efficiency of the construction by reducing travel distance and material handling cost and manpower. However, SLPs are static layout schemes, which cannot be reorganized during the construction process to correspond with errors, phase transition, changing working environments on the site. To solve this problem, researches on dynamic site layout planning(DSLP) are emerging. This preliminary study clarifies characteristics of temporary facility's variables to develop the vertical DSLP algorithm of high-rise building construction.

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Development of An Optimal Call-response Algorithm of Construction Lift for High-rise Building Construction (초고층 건설용 리프트의 최적 호출 응답 알고리즘 개발)

  • Ahn, Heejae;Lee, Dongmin;Kim, Taehoon;Cho, Hunhee;Kang, Kyung-In
    • Proceedings of the Korean Institute of Building Construction Conference
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    • 2018.05a
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    • pp.6-7
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    • 2018
  • Although the importance of the construction lift is increasing, no improvements are being made to its operating system. This study proposed an optimal call-response algorithm of the construction lift for high-rise building construction by using image sensing technology, height measuring sensor, and load cell. This algorithm makes turn-around decision of the construction lift by considering the information and the number of user. It occurs when the call comes from a floor where the construction lift already have passed. The purpose of this study is to reduce the total latency of the construction lift user. Furthermore, it is possible to prevent delay in construction duration by carrying out a priority operation of the construction lift for the critical workforce.

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Development of concrete pumping technology for construction of high-rise building using electromagnetic field (전자기장을 활용한 초고층 건축물 콘크리트 압송기술개발)

  • Kim, Woo-Jea;Kwon, Seung-Hee
    • Proceedings of the Korean Institute of Building Construction Conference
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    • 2018.05a
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    • pp.4-5
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    • 2018
  • Recently, high-strength concrete used for shortening the construction time of high-rise building construction, Concrete pumping technology is emerging as the core technology of high-rise buildings. In this paper, we have started to study the use of electromagnetic field as a method to increase the efficiency of the lubricating layer between the inside of the pipe and concrete, which has been established as the most important factor determining the pumping performance. The pumping performance improvement effect of concrete strength was verified and basic research was carried out to utilize it as a method to increase the efficiency of pumping in field application. In the related work, the effect of the electromagnetic field was verified by conducting a mock-up performance evaluation (horizontal 300 m) of the pumping force by the concrete strength.

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Experimental evaluation of aerodynamic damping of square super high-rise buildings

  • Quan, Yong;Gu, Ming;Tamura, Yukio
    • Wind and Structures
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    • v.8 no.5
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    • pp.309-324
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    • 2005
  • Aerodynamic damping often plays an important role in estimations of wind induced dynamic responses of super high-rise buildings. Across- and along-wind aerodynamic damping ratios of a square super high-rise building with a height of 300 m are identified with the Random Decrement technique (RDT) from random vibration responses of the SDOF aeroelastic model in simulated wind fields. Parametric studies on effects of reduced wind velocity, terrain type and structural damping ratio on the aerodynamic damping ratios are further performed. Finally formulas of across- and along-wind aerodynamic damping ratios of the square super high-rise building are derived with curve fitting technique and accuracy of the formulas is verified.

A Study on the Thermal Phenomena and Stack Effect of Nude Elevator Shaft of High Rise Building that used CFD (CFD를 이용한 초고층빌딩 누드 엘리베이터의 온열 및 연돌현상에 관한 연구)

  • Park, Jung-Han
    • Proceedings of the SAREK Conference
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    • 2008.06a
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    • pp.1059-1064
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    • 2008
  • The present study is to reduce the thermal phenomena and stack effect of nude elevator of the high-rise building used CFD simulation. Since many High-rise buildings used the curtain-wall glass, thermal phenomena and stack effect can easily occur at hot and cold season, respectively. The simulation has been conducted and verified for the effects of the amount of suppling air to the environment of the inside nude elevator shaft. The results of simulations show that the problems due to the thermal and stack effect will be reduced by enforced ventilation or natural ventilation and those will be presented by temperature and velocity profiles and pressure differences.

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Field Experiments on Stack Effect in Stairwells of High-Rise Building (고층건물 피난계단에서의 연돌효과에 대한 현장실험)

  • Kim, Jung-Yup
    • Proceedings of the SAREK Conference
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    • 2008.06a
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    • pp.459-462
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    • 2008
  • The fact that the major cases of life casualties are from smoke in the fire accidents and the expected steep increase of skyscrapers, huge spaces, multiplexes and huge scaled underground spaces demand establishment of efficient smoke countermeasure. The architectural factors affecting the pressure field of building should be examined for the successful design and operation of smoke management system and the stack effect is one of the important factors. The field experiments on stack effect in stairwells of high-rise building with regard to open/close condition of door are carried out to evaluate the features of pressure applied to door between each compartments, i.e, stair, lobby and accommodation. The procedures and results of experiments are presented.

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Considerations of Sustainable High-rise Building Design in Different Climate Zones of China

  • Wan, Kevin K.W.;Chan, Man-Him;Cheng, Vincent S.Y.
    • International Journal of High-Rise Buildings
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    • v.1 no.4
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    • pp.301-310
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    • 2012
  • Buildings, energy and the environment are key issues that the building professions and energy policy makers have to address, especially in the context of sustainable development. With more tall buildings constructed in China, the impact on energy consumption and carbon emission would be great from buildings (2% increase of carbon dioxide annually between 1971 and 2004). The imperative was to investigate the building energy performance of high-rise in different climate zones and identify the key design parameters that impose significantly influence on energy performance in sustainable building design. Design implications on glazing performance, sizing of the ventilation fans, renewable energy application on high-rise building design are addressed. Combination of effective sustainable building design strategies (e.g., building envelope improvement, daylight harvesting, advanced lighting design, displacement ventilation, chilled ceiling etc.) could contribute more than 25% of the total building energy consumption compared to the international building energy code.

Seismic assessment of slender high rise buildings with different shear walls configurations

  • Farghaly, Ahmed Abdelraheem
    • Advances in Computational Design
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    • v.1 no.3
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    • pp.221-234
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    • 2016
  • The present study dictates the behavior of shear wall under a seismic event in slender high rise buildings, and studies the effect of height, location and distribution of shear wall in slender high rise building with and without boundary elements induced by the effect of an earthquake. Shear walls are located at the sides of the building, to counter the earthquake forces. This study is carried out in a 12 storeys building using SAP2000 software. The obtained results disclose that the behavior of the structure is definitely affected by the height and location of shear walls in slender high rise building. The stresses are concentrated at the limit between the shear wall region and the upper non shear wall especially for shear walls without columns. Displacements are doubled between the shear wall region and the upper non shear wall especially for shear walls without columns.

The Process for Development of the Optimum Layout Model in Slab Formwork of High-rise Building Construction (초고층 건축공사의 바닥거푸집 최적배치 모델 구축 프로세스 연구)

  • Cha, Minsoo;Kim, Taehoon;Cho, Hunhee;Kang, Kyung-In
    • Proceedings of the Korean Institute of Building Construction Conference
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    • 2011.05a
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    • pp.171-172
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    • 2011
  • Formwork accounts for a large proportion of the framework in high-rise construction projects in terms of the duration and cost. Especially, slab formwork has a significant influence on these factors. However, the current selection of formwork method in general contractors depends on the decisions of few experienced engineers, and layout planning of the formwork in specialty contractors requires lots of time by different floor types. As a preliminary study for developing an optimum layout model in slab formwork of high-rise building construction, this study proposes the process of the optimum layout model and determines a fitness function for use of the genetic algorithm aimed at table formwork.

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A study on the survey Korea code research for fire safety design of high-rise building (초고층건축물의 화재안전설계를 위한 관련법령조사에 관한 연구)

  • Kim, Il-Kwon;Seo, Dong-Ku;Kwon, Young-Jin
    • Proceedings of the Korean Institute of Building Construction Conference
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    • 2013.11a
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    • pp.232-233
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    • 2013
  • Recently Korea has imported and executed Performance Based Design for the method to settle the dangerousness on outbreak of fire of high-rise building. The overseas country's PBD is autonomic but It is unable to carry out the essential role of PBD as the performance based design that based the code based design in the domestic. Also It occurs the problems that different the classification standard of building as dualisation between the building code and the fire services act. In this study, We have investigated overseas's cases for the PBD of high-rise building and have drawn the improvement direction & the problem of domestic's PBD by comparing and the analysing the domestic regulation.

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