[논문]점토지반 병설쉴드터널에서 후행터널 굴착에 의한 비대칭 침하형상 연구

안창윤; 박두희

doi:10.7843/kgs.2021.37.10.55

점토지반 병설쉴드터널에서 후행터널 굴착에 의한 비대칭 침하형상 연구
Study on Asymmetric Settlement Trough induced by the 2nd Tunneling of Twin Shield Tunnels in Clay 원문보기

韓國地盤工學會論文集 = Journal of the Korean geotechnical society, v.37 no.10, 2021년, pp.55 - 63

안창윤 (한양대학교 건설환경공학과, 현대산업개발(주) 건설관리본부) , 박두희 (한양대학교 건설환경공학과)

초록
AI-Helper

쉴드TBM의 제작기술 발전과 시공경험 축적으로, 쉴드터널은 전력, 통신 및 상하수도와 같은 소구경 터널에서 도로 및 철도와 같은 대구경 터널로 확대되고 있으며, 그에 따라 병설쉴드터널의 적용도 증가하고 있다. Peck(1969)에 의해 연약지반에서 단선쉴드터널의 지표침하형상이 Gaussian distribution으로 표현될 수 있음이 제시된 이후, 현장계측, 실내모형실험 및 수치해석 등의 방법을 통해 많은 연구에서 이의 적정성이 확인되었다. 본 연구는 현장 계측된 병설쉴드터널의 지표침하로부터 후행 터널(2^nd tunnel)에 의한 추가 지표침하 형상을 표현하기 위해 침하형상의 좌·우측에 Gaussian curve를 각각 적용함으로써, 침하형상을 보다 정확히 표현할 수 있음을 알 수 있었다.

Abstract ▼ AI-Helper

The construction of shield tunnels is being expanded from the small-bore tunnels such as power, telecommunications, water supply, and sewerage pipes to the large bore tunnels such as road and railway tunnels with the advancement of the shield TBM (Tunnel Boring Machine) manufacturing technology. Accordingly, the construction of twin shield tunnels is increasing. Peck (1969) reported that the surface settlement trough is well described by a Gaussian distribution on a single shield tunnel. Hereafter, many studies about the surface settlement trough were performed by the field measurement, laboratory model test, and numerical analysis. This study confirmed that the additional surface settlement trough induced by the 2nd tunneling were well described by using each Gaussian curve for the right and left sides of the settlement trough.

주제어

표/그림 (10)

그림 Fig. 1. Surface settlement trough of twin shield tunnels
그림 Fig. 2. Plan of terminal 2 railway and measurement sections of the surface settlement
그림 Fig. 3. Ground conditions of the shield tunnel (Ahn, 2017; Korea-National-Railway, 2013b)
그림 Fig. 4. Inference method of additional settlement due to the 2^nd shield passing
그림 Fig. 5. Example of evaluating the parameter i_n, i_r on asymmetric settlement trough
그림 Fig. 6. Surface settlements due to 2^nd tunneling and troughs described by Gaussian curve on D①~D④
그림 Fig. 7. Surface settlements due to 2^nd tunneling and troughs described by Gaussian curve on D⑤~D⑩
그림 Fig. 8. Surface settlements due to 2^nd tunneling and troughs described by Gaussian curve on section A-1, B, C-1 and C-2 of Bangkok MRT
그림 Fig. 9. Surface settlements due to 2^nd tunneling and troughs described by Gaussian curve on section D-1, D-2 and A-2 of Bangkok MRT
그림 Fig. 10. Range of parameter K for additional settlement troughs due to the 2^nd shield passing

참고문헌 (22)

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상세보기
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상세보기
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상세보기
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상세보기
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상세보기
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상세보기
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상세보기
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상세보기

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