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(사)한국터널지하공간학회

ISSN : 2233-8292

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Vol.17 No.6
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A study of tunnel concrete lining design using the ground-lining interaction model with the interface element

(사)한국터널지하공간학회 / (사)한국터널지하공간학회, (P)2233-8292; (E)2287-4747
2015, v.17 no.6, pp.575-586


& (2015). A study of tunnel concrete lining design using the ground-lining interaction model with the interface element. (사)한국터널지하공간학회, 17(6), 575-586.
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Abstract

In NATM tunnel, the Ground-Lining Interaction model(GLI model) had been proposed a one of the numerical analysis as the ground load estimation method of the concrete lining. But this model was not applied with the interface mechanism between the ground and the support member or concrete lining. Therefor in this study, it is implemented as a model for closer than actual states that the interface element applied to the existing GLI model. And the modified GLI formula is proposed with the ground load estimation that is from the numerical results for each ground and rock cover conditions. Based on the numerical results, the ground load acting on concrete lining is reduced to ave. 88~106% in case of IV ground condition and ave. 47~57% in case of weathered soil condition comparing with the existing GLI model. It can be anticipated that the results obtained from this study can be applied to an estimation of the ground load on the concrete lining modeled like as real states, consistent and economical design.

keywords
Ground-Lining interaction model, Concrete lining, Interface element, Ground load, 지반-라이닝 상호작용 모델, 콘크리트 라이닝, 계면요소, 지반하중

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