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- Ahmed, LamisKTH,Betongbyggnad (author)
A comparison of models for shotcrete in dynamically loaded rock tunnels
- Article/chapterEnglish2010
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- Informa UK Limited,2010
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- LIBRIS-ID:oai:DiVA.org:kth-326680
- https://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-326680URI
- https://doi.org/10.1201/b10545-4DOI
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- Language:English
- Summary in:English
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- Part of book: ISBN 9780203849378QC 20230509
- During blasting in tunnels and mines, the shotcrete-rock interaction is influenced by propagating stress waves. Shotcrete support in hard rock tunnels is here studied through numerical analysis and comparisons with previous numerical results, measurements and observations in situ. The stress response in the shotcrete closest to the rock when exposed to P-waves striking perpendicularly to the shotcrete-rock interface is simulated. The first model tested is an elastic stress wave model, which is onedimensional with the shotcrete assumed linearly elastic. The second is a structural dynamic model that consists of masses and spring elements. The third model is a finite element model implemented using the Abaqus/Explicit program. Two methods are used for the application of incident disturbing stress waves: as boundary conditions and as inertia loads. Results from these three types of models are compared and evaluated as a first step before a future extension to more detailed analyses using 3D models.
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- Ansell, AndersKTH,Betongbyggnad(Swepub:kth)u1936jj0 (author)
- KTHBetongbyggnad (creator_code:org_t)
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- In:Shotcrete: Elements of a System: Informa UK Limited, s. 11-20
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