CalcsSteel Fibre Reinforced Shotcrete Tunnel Lining DesignAfter:
Barrett and McCreath (1995)Inputss2mShapeWedgeWedgeSquare Blockf
j30h-mg24kN/m3W55.4kN=B9*(IF(B6="Wedge",1/3*B5^2*B5/2/TAN(RADIANS(B7)),B8*B5^2))weq13.9kN/m=B8/B5^2nc0.15fy2MPafa1MPaa0.03mt0.075mAdhesionCa240kN=4*B12*B5*B13*1000check:
Ca > 1.5 *
WOKFlexureM7.97kNm=1/8*(B9*B5^2*(1+0.15))Mmax3.75kNm=1/6*B11*B5*B14^2*1000check:
0.8 * Mmax > 1.5 * MNot OKGeometryWedgeSquare Blockhf jssNoteIn
good ground adhesion may be relied upon. In poor ground flexural
capacity must be provided.
Unbolted spanSteel Fibre Reinforced Shotcrete Tunnel Lining
DesignAfter: Barrett and McCreath
(1995)Inputss3.6mShapeWedgeWedgeSquare Blockf
j30h-mg24kN/m3W323.2kN=B9*(IF(B6="Wedge",1/3*B5^2*B5/2/TAN(RADIANS(B7)),B8*B5^2))weq24.9kN/m=B8/B5^2nc0.15fy2MPafa1MPaa0.03mt0.075mAdhesionCa432kN=4*B12*B5*B13*1000check:
Ca > 1.5 * WNot
OKFlexureM46.47kNm=1/8*(B9*B5^2*(1+0.15))Mmax6.75kNm=1/6*B11*B5*B14^2*1000check:
0.8 * Mmax > 1.5 * MNot OKGeometryWedgeSquare Blockhf jssNoteIn
good ground adhesion may be relied upon. In poor ground flexural
capacity must be provided.
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