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Estimating variability in point load resistance of fibre reinforced shotcrete linings


Bernard, ES and Coleman, R, Estimating variability in point load resistance of fibre reinforced shotcrete linings, Tunnelling and Underground Space Technology, 125 Article 104455. ISSN 0886-7798 (2022) [Refereed Article]

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DOI: doi:10.1016/j.tust.2022.104455


In the design of fibre reinforced shotcrete linings, the focus of attention is usually fixed on determining the maximum load capacity to satisfy ultimate limit state requirements. Less attention is focused on determining the variability in capacity, both in service and at ultimate load, but this variability is relevant to identification of a suitable partial safety factor for lining load capacity. To help address this deficit, a series of analyses have been undertaken to assess the likely magnitude of variation in the flexural and punching shear resistance of fibre reinforced shotcrete linings. The analyses have been based on an assessment of the propagation of variances using analytical and semi-empirical models of flexural and punching resistance. When compared to observed variability in full-scale tests of lining capacity, the analyses produce acceptable estimates of the measured Coefficient of Variation in lining load resistance.

Item Details

Item Type:Refereed Article
Keywords:geotechnical, tunnelling, shotcrete lining
Research Division:Engineering
Research Group:Civil engineering
Research Field:Civil geotechnical engineering
Objective Division:Construction
Objective Group:Construction planning
Objective Field:Civil construction planning
UTAS Author:Coleman, R (Professor Richard Coleman)
ID Code:152242
Year Published:2022
Deposited By:Directorate
Deposited On:2022-08-15
Last Modified:2022-08-24

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