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Simplified Method for Calculating the Settlement of Exsisting Tunnel Induced by New Tunneling Based on Two Step Method
Settlement induced by new tunneling is important in assessing the safety of existing tunnel. A Simplified setlement method for the existing tunnel was obtained based on the two-step method. Firstly, ground setlement induced by tunneling was calculated using experimental method and elastic method. Then the entire tunnel deformation can be calculated using elastic-foundation-beam model and the ground settlement obtained in the first step was applied on the existing tunnel as a passive settlement load.
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