공간적으로 변이하는 지진파에 의한 터널의 변형 비교

• 영문명: Comparison of Tunnel`s Deformation by Spatially Variable Ground Motion
• 발행기관: 한국방재학회
• 저자명: 곽동엽 안재광 박두희 Kwak, Dong-Yeop Ahn, Jae-Kwang Park, Du-Hee
• 간행물 정보: 『3. 한국방재학회 학술대회논문집』2008년, 265~268쪽, 전체 4쪽
• 주제분류: 공학 > 기타공학
• 파일형태: PDF
• 발행일자: 2008.02.28

영문 초록

The safety of a tunnel under seismic motion is most often evaluated by ovalling deformation of tunnel. This paper research about tunnel`s longitudinal deformation. Because of spatial variation of seismic ground motion, the longitudinal structures like tunnel are likely to experience relative displacements along longitudinal direction. The spatially variable ground motion can be estimated by coherency function obtained empirically, and can be considered from different arrival times of ground motion. As a result of estimating tunnel`s relative displacements at maximum curvature of tunnel, the displacements and curvatures estimated by coherency function affect the tunnel`s safety more than different arrival times. However, if tunnel`s displacements by coherency function superpose on displacements by different arrival times, the relative displacements and curvatures of tunnel will be more severe. Therefore, to estimate accurately tunnel`s deformation in longitudinal direction has to consider both coherency and wave passage effects.

키워드

Spatially variable ground motion Tunnel Wavefront Coherency Wave passage