Explosives and Blasting (화약ㆍ발파)
- Volume 14 Issue 2
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- Pages.71-80
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- 1996
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- 1229-9073(pISSN)
Effects of Earthquake on Tunnel Stability
지진이 터널 안정에 미치는 영향
Abstract
A series of nurmerical analysse for the earhtquake of Iran railway tunnles under construction by NATM(New Astrian Tunnelling Method) were careid out throuth a pseudo-dynamic analyses techique used in a FFM computer program, DWTAP(Daewoo Tunnel Analysis Program), and the results are described in the paper. The analyses were performErl for two case;one is for the primary supports and the other is for the rompletEd permanent roncrete lining. The horizontal and verical groW1d accelerations for the design were estimatEd as 0.34 g and 0.23 g, respectively based on the historical reismic rerords in the proj3et area and the empirical equations. The results show that the turmel would be safe W1der the anticipitOO earthquake motion with the permanent roncrete lining, but some minor cracks rnigt be developErl in the primary shotcrete lining without any significant structural damages.
본 고에서는 터널 신공법으로 건설되고 있는 Iran 철도터널의 지진에 대한 안정성을 검토하기 위하여 수행한 일련의 과정 즉, 설계지진 가속도의 산출과정과 이를 FEM 해석에 도입한 과정을 소개하고 FEM 해석결과를 분석하여 지진이 터널에 미치는 영향을 고찰하였다. Iran 지역의 지진기록 및 경험식을 통하여 지진의 최대설계가속도로서 수평가속도
Keywords