Quarterly Report of RTRI
Online ISSN : 1880-1765
Print ISSN : 0033-9008
ISSN-L : 0033-9008
PAPERS
Estimation Method of Falling Concrete Piece from Tunnel Lining
Kiwamu TSUNOYoshiyuki KOJIMAKiyoshi KISHIDA
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2013 Volume 54 Issue 1 Pages 12-17

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Abstract

This paper describes a method for quantitatively evaluating the falling of concrete pieces from tunnel linings, comparing the shear stress acting on crack surfaces with the shear capacity. The shear capacity of cracks of various width, inclination angle and roughness were investigated by double shear tests simulating the fall of concrete pieces and on a simulation method, whose applicability is also described in this paper. The resisting capacity against the fall of concrete pieces was estimated using the proposed method under conditions reproducing an actual tunnel.

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© 2013 by Railway Technical Research Institute
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