• 한국철도학회논문집
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• 제12권5호
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• pp.631-640
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• 2009

본 논문에서는 수치해석적인 기법을 이용하여 지하철 주변 지반의 진동레벨 감쇠에 대한 연구를 수행하였다. 해석 결과 터널이 토사지반에 있을 경우 지반진동에 가장 큰 영향을 미치는 요소는 지반의 물성치로 나타났고, 암반에 있을 경우 가장 큰 영향을 미치는 것은 암반의 물성치로 나타났다. 또한, 진동원과의 연직면에서 떨어져 있는 각도를 기준으로 영향범위를 산정한 결과, 대부분의 해석 결과에서 연직면에서 $30^{\circ}$ 이내에 있을 경우 진동레벨의 감쇠 현상은 크지 않은 것으로 판단되었고, $40^{\circ}$ 이상이 되면 진동레벨은 급격히 감소하는 경향이 있는 것으로 나타났다.

• 한국소음진동공학회논문집
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• 제15권8호
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• pp.918-923
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• 2005

The vibration level (dB(V)) and vibration velocity (cm/sec) on the ground and buildings due to the differences of the measuring sites from the blasting source was investigated. To compare with vibration level and vibration velocity theirs magnitude was not surely directly proportional and vibration velocity 0.1 cm/sec was $45\~50$ dB(V). The difference between the measured vibration level and the calculated vibration level by Ejima's equation using vibration velocity PVS(peak vector sum) showed $21.0\~30.9$ dB(V) on the ground, $15.3\~23.6$ dB(V) on the apartment, respectively. And the correlation of vibration velocity and nitration level at the measuring sites of lower altitude showed higher than that of higher altitude.

• 한국소음진동공학회논문집
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• 제14권7호
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• pp.632-638
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• 2004

In order to evaluate the effect of blasting vibration in buildings and it's resident located around blasting construction field in urban area, blasting vibration characteristics were measured by the vibration level, vibration velocity. The 250g and 750g of charged powder were used at the apartment and at the ground, respectively. In the measurement of the ground, 2 (perpendicularity) axis was the highest value in vibration level, but vertical direction was the highest value at 25 m point and longitudinal direction was the highest value at 50 m point in vibration velocity. The amount of measurement was high value when measuring point is higher than blasting source, while that of measurement was low value when measuring point is lower than blasting source. In the measurement of the apartment, Z axis was the highest value in vibration level, but in vibration velocity transverse direction was the highest value at ground, was vertical direction at 1st floor, was longitudinal direction at 3rd floor and was vertical and longitudinal direction at 5th floor. The vibration level and the vibration velocity of 50 m point showed higher correlation value than 25 m point at the ground, but those of 25 m point showed higher correlation value than 50 m point at the apartment.