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Mechanisms and optimization of system bolts in shallow four-track HSR tunnels based on deformation pressure theory. [PDF]
Sci RepMa J, He S, Liu X, He J.
europepmc +1 more source
An Extended Damage Plasticity Model for Shotcrete: Formulation and Comparison with Other Shotcrete Models [PDF]
Materials, 2017 The aims of the present paper are (i) to briefly review single-field and multi-field shotcrete models proposed in the literature; (ii) to propose the extension of a damage-plasticity model for concrete to shotcrete; and (iii) to evaluate the capabilities of the proposed extended damage-plasticity model for shotcrete by comparing the predicted response ...
Matthias Neuner +2 more
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Shotcrete Simulator For Education of Shotcrete Robot Operators
2010Sprutbetong är en vanlig metod för förstärkning av till exempel tunnelbyggen. Fram till nu har ingen insats gjorts för att skapa en virtuell miljö för att utbilda personal för denna typ av arbete. Den här uppsatsen presenterar arbetet som gjorts för att skapa en prototyp för en virtuell träningsmiljö.
Börjesson, Petter, Thell, Mattias
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Reducing Calcium Dissolution in Tunnel Shotcrete: The Impact of Admixtures on Shotcrete Performance
LangmuirGroundwater infiltration into tunnels causes water to percolate through the fissure channels in the initial support shotcrete. This results in the dissolution and outflow of calcium hydroxide, a key product of cement hydration. This process significantly incurs the formation of crystallization blockages in the tunnel drainage systems.
Yueping Tong +5 more
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Analytical Approach to Estimating the Influence of Shotcrete Hardening Property on Tunnel Response
Journal of Engineering Mechanics - ASCE, 2022Kui Wu +2 more
exaly