QUANTITATIVE EVALUATION OF MECHANICAL EFFECTS OF SHOTCRETE IN AN ELLIPTICAL TUNNEL

楕円形トンネルにおける吹付けコンクリートの力学的機能と効果の定量的評価

Although the mechanical functions and effects of shotcrete have been studied much by experimental or numerical method, they aren't still quantitatively evaluated. Therefore, the mechanism that reinforces the rock mass around tunnel isn't made clear. Authors derived the analytical solution of an elliptical tunnel reinforced by ring considering initial displacements under semi three dimensional loads. This paper presents quantitative evaluation of functions and effects of shotcrete for an elliptical tunnel from numerical calculation results using above solution in the level of stresses, displacements and sectional forces, and make its mechanism of reinforcement clear. 吹付けコンクリートの力学的支保機能と作用効果については,これまで実験や数値解析によって多く研究されてきたが,それらを定量的に評価することは十分になされていない.著者らは,準三次元荷重下で初期変位を考慮した上で,リングで補強された楕円形トンネルの理論解析解を導出した.本論文は,その数値結果をもとに楕円形トンネルにおける吹付けコンクリートの機能と効果を応力,変位および断面力のレベルで定量評価し,さらにその補強メカニズムを解明するものである.

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  • Japanese

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  • Accession Number: 01606334
  • Record Type: Publication
  • Source Agency: Japan Science and Technology Agency (JST)
  • Files: TRIS, JSTAGE
  • Created Date: Jul 20 2016 3:01PM