The research presented in this report is a summary of a Ph.D. project carried out at KTH Royal Institute of Technology and the Division of Concrete Structures by Andreas Sjölander. The focus of this project was to describe and explain how the variations in shotcrete thickness and bond strength affect the structural behaviour and capacity for a shotcrete lining. Especially, the influence of local variations in shotcrete thickness and bond strength has been studied in detail. For this purpose, a numerical framework capable of simulating bond failure, cracking of FRS and pull-out failure of grouted rock bolts have been developed. Moreover, in-situ data for shotcrete thickness and bond strength have been collected and analysed to characterize the variations in important shotcrete parameters.
Structural behaviour of shotcrete in hard rock tunnels
Författare:
Andreas Sjölander
Rapportkategori:
BeFo-rapport
Rapportnummer:
210
Utgivningsår:
2020
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