Abstract
The purpose of this study is to analyze the structural performance of the lining according to the magnitude as well as shape of rock load. Four cases of rock load shape were applied on the final lining (concrete lining) to perform structural analysis using beam spring model. This study includes two contents; firstly, the stability of the lining was analyzed using capacity diagrams. Secondly, the serviceability of the lining was analyzed using the cracked hinge model. While assessing the stability of the lining, FS = 2.45 was used according to LRFD specifications. The stress-crack opening relationship, represented by g(w) function, was used to assess the serviceability of the lining. The critical parameters used in this study are the K 0 condition, load direction and application of the wedge load. Based on the results obtained after analysis, it was concluded that the K 0 condition could change the thrust force-bending moment relationship which affects the stability and serviceability of the lining. Rock load in vertical direction affected the lining more than that in horizontal direction. Lastly, the development of wedge load proved to be more adverse than the application of larger uniform rock load on the lining.
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Kim, J., Kim, J., Lim, W. et al. Structural performance of final lining according to the rock load shape. KSCE J Civ Eng 20, 1329–1335 (2016). https://doi.org/10.1007/s12205-015-0308-1
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DOI: https://doi.org/10.1007/s12205-015-0308-1