• Title/Summary/Keyword: high rise buildings

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Analysis of Causes of and Solutions to the Stack Effect by Vertical Zoning of High-rise Buildings (초고층 건축물 수직조닝별 연돌효과의 원인 및 해결 방안 분석)

  • Shin, Sang Wook;Ryu, Jong Woo;Jeong, Hee Woong;Kim, Dae Young
    • Journal of the Korea Institute of Building Construction
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    • v.21 no.5
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    • pp.483-493
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    • 2021

  • Urban overcrowding has created an explosive supply and demand for high-rise buildings. High-rise buildings are contributing to enhancing the image of the city by serving as focal points, but due to the stack effect, malfunction of elevator doors, difficulties in opening and closing the doors and windows of the outer wall, smoke and odors spreading to the upper floors, noise, energy loss, fire and pollutants have been causing various unexpected problems such as rapid spread of fire. This study classified high-rise buildings according to their vertical zoning, analyzed the causes of and solutions to the stack effect, and derived design and construction methods. Through the initial plan to block the outside air and securing airtightness through precise construction, we sought ways to secure the airtightness inside and outside the building by actively blocking the airflow from the lower floors. In addition, the facility solution can be a measure to reduce the specific phenomena caused by the stack effect, but it should only be applied to the minimum extent because the potential for secondary damage is high. This study emphasized the need for systematic stack effect management by suggesting design and construction measures for each vertical zoning of the causes and countermeasures of the stack effect. It is expected that this study will be helpful not only for design and construction, but also for building maintenance.

  • https://doi.org/10.5345/JKIBC.2021.21.5.483 인용 PDF KSCI

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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