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논문 기본 정보

자료유형
학술저널
저자정보
Kwak, Changwon (Civil & Architectural Engineering Group, KDHEC) Jang, Dongin (Department of Civil Engineering, Hanseo University) You, Kwangho (School of Civil Environment Energy Engineering, University of Suwon) Park, Innjoon (Department of Civil Engineering, Hanseo University)
저널정보
테크노프레스 Geomechanics & engineering Geomechanics & engineering 제15권 제3호
발행연도
2018.1
수록면
833 - 839 (7page)

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Dynamic behaviour of a tunnel is one of the most important issues for the safety and it is generally subjected to the seismic response of the surrounding soil. Relative displacement occurred in tunnel lining during earthquake produces severe damage. Generally, it concentrates at the connecting area when two tunnels are connected in the ground. A flexible segment is a useful device for the mitigation of seismic loads on tunnel lining. In this study, 1-g shaking table tests are performed to investigate the acceleration response for the verification of the effect of flexible segment and to determine the optimum location of the flexible segment for connected tunnels. Four different seismic waves are considered; as a result, peak acceleration is reduced to 49% in case that flexible segment is implemented adjacent to connecting area. It also exhibited that the mitigation of acceleration response is verified in all seismic waves. Additionally, 3-dimensional numerical analysis is performed to compare and verify the results. And the numerical results show good agreement to those of the experimental study.

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