• Title/Summary/Keyword: felling impact vibration

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A Study for Felling Impact Vibration Prediction from Blasting Demolition (발파해체시 낙하충격진동 예측에 관한 연구)

  • 임대규;임영기
    • Explosives and Blasting
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    • v.22 no.3
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    • pp.43-55
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    • 2004
  • Use term of tower style construction exceeds recently. Accordingly, according to construction safety diagnosis result, achieve removal or Improvement construction. But when work removal, must shorten shut down time. Therefore, removal method of construction to use blasting demolition of construction is very profitable. Influence construction and equipment by blasting vibration and occurrence vibration caused by felling impact. Is using disadvantageous machine removal method of construction by and economic performance by effect of such vibartion. Therefore, this research studied techniques to forecast vibartion level happened at blasting demolition and vibration reduction techniques by use a scaled model test.

A Case Study on Explosive Demolition of Cylindrical Silo (원통형 사일로 발파해체 시공사례)

  • Park, Hoon;Jang, Seong-Ok;Park, Hyong-Ki;Kim, Nae-Hoi;Suk, Chul-Gi
    • Explosives and Blasting
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    • v.26 no.2
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    • pp.52-63
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    • 2008
  • Recently the demand of demolition for the unnecessary cylindrical silo structure is increasing due to deterioration and unsatisfactory functional conditions and the issue of demolition is becoming a major highlight. This case study introduced the explosive demolition of the cylindrical silo structure by felling method. The results of explosive demolition conducted on cylindrical silo structure using the felling method show, A silo had collapsed precisely according to estimated direction but in case of B silo there was a minor difference. The lower colunms and ring girder support was designed to the hinge line but in reality the lower colunms of the silo did not do its structural support role and only the ring girder support did its role successfully. As for the impact vibration, most of the measurements were within the estimated range.