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Abstract ▼ AI-Helper

This research was carried in order to improve design technique for the vertical shaft of which design guide has not been proposed clearly. The deformation tendency of vertical shaft and distribution of the earth pressure around shaft were reviewed with both of theoretical earth pressure distribution...

This research was carried in order to improve design technique for the vertical shaft of which design guide has not been proposed clearly. The deformation tendency of vertical shaft and distribution of the earth pressure around shaft were reviewed with both of theoretical earth pressure distribution suggested in design criteria and measured data which had been gained from 2 constructing shaft. The distribution of earth pressure applied on the vertical shaft was similar with the result of previous theory for the earth pressure proposed by Shin (2007). Moreover it was observed that asymmetric deformation and earth pressure around vertical shaft were caused by inhomogeneity and anisotropy of the ground. The asymmetric earth pressure ratio ($R_p$) in soil and weathered rock were divergent according to the shape ratio. In addition, it is more reasonable that the value of asymmetric earth pressure ratio ($R_p$) is considered less than 0.35 in the case of constructing shaft under rock.

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