• Title/Summary/Keyword: 콘크리트 해체

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콘크리트 구조물의 해체공법에 대한 연구동향

  • 민윤기;유승규
    • Computational Structural Engineering
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    • v.2 no.3
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    • pp.37-39
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    • 1989
  • 본 고에서는 선진 각국의 해체공법에 대한 연구동향을 고찰하기 위한 일환으로 1988.11.7-11 일본 동경에서 개최된 콘크리트와 조적조의 해체 또는 폐재의 재이용에 관한 제2회 심포지움에서 발표된 논문을 기초로 해체공법에 관한 연구동향을 살피고자 한다. 해체공법에 대하여 발표된 논문을 주제별로 살펴보았다.

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A Case Study of Explosive Demolition of Apartment and Underground Structures (성남 하대원 주공 아파트 및 화정 지하구조물 발파해체 사례분석)

  • 이천식;이윤재;김형섭
    • Explosives and Blasting
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    • v.19 no.3
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    • pp.75-89
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    • 2001
  • 아파트 재건축을 위해 발파해체공법을 이용하여 실시한 5층 아파트 9개동의 시공사례를 중심으로 국내 아파트 발파해체에 따른 경제적 공법의 제시와 시공되어진 해체구조물의 현황과 공법, 사전처리 공법등을 소개하고 또한, 지상구조물이 아닌 지하구조물의 해체를 위한 콘크리트의 부분 발파사례를 통하여 해체 분야의 발전 방안을 고찰하였다.

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A Demolition Experiment of a Scaled Model for a Concrete Box Girder Bridge (콘크리트 박스거더 교량의 발파해체를 위한 교량모형 해체실험)

  • Yang, Hyung-Sik;Jang, Hyong-Doo;Ko, Young-Hun
    • Tunnel and Underground Space
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    • v.21 no.2
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    • pp.103-108
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    • 2011
  • Along with series of concrete block experiments, a demolition experiment was conducted for a scaled concrete box girder bridge to investigate collapse and blast behavior. Tri nitro toluene (TNT), the standard explosive for strength was adopted as concussion charge. The result show that demolition was caused by not only direct detonation pressures at charging spots but also blast pressures at inner wall of concrete box girder.

Blast Design for Explosive Demolition of Concrete Foundation (기초콘크리트 구조물의 발파해체를 위한 발파설계)

  • Park, Hoon;Park, Hyoung-Ki;Suk, Chul-Gi;Yi, Young-Seop;Kaneko, Katsuhiko
    • Explosives and Blasting
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    • v.30 no.1
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    • pp.9-16
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    • 2012
  • With the deterioration and functional loss of structures, there is an increasing demand for demolition and various demolition technologies have been developed. In case of a large-scale concrete foundation, application of some mechanical demolition techniques is limited because of the structural characteristics, and explosive demolition or explosive demolition combined with mechanical demolition is applied recently due to the effect to the surrounding environment by the ground vibration. In this study, we compared peak particle velocity of ground vibration depending on average fragment size in case of explosive demolition design for large-scale concrete foundation using the relation among specific charge, charge constant and transmitting medium constant as well as the relation between average concrete fragment size and specific charge.

Execution Case Study on the Explosive Demolition of a Large-Section RC Special Structure (대단면 철근콘크리트 특수구조물 발파해체 시공 사례)

  • Park, Hoon;Suk, Chul-Gi
    • Tunnel and Underground Space
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    • v.19 no.5
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    • pp.397-406
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    • 2009
  • Recently, the number of industrial structures that must be demolished due to structural deterioration and unsatisfactory functional conditions has been increased. To minimize environmental hazardous factors created during the process of demolition, the explosive demolition method has been applied increasingly. This execution case was intended to describe an application of the explosive demolition method to the demolition of a Crusher & Screen structure, which was a large-section reinforced concrete special structure. It was deemed necessary due to its structural deterioration and unsatisfactory functional condition. Various pre-weakening processes and blasting patterns were applied to the large-section reinforced concrete members, and to reduce blasting vibration and impact vibration, time intervals were established for blasting in the same column and for blasting between blasting blocks. By applying the explosive demolition method to the demolition of a large-section reinforced concrete special structure, the explosive demolition was completed safely and efficiently, without causing any damage to surrounding facilities.