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APPLICATION OF 3D ELASTOPLASTIC FRACTURE DAMAGE MODEL TO DETERMINATION OF MININMUM ROOF THICKNESS OF XIAMEN SUBSEA TUNNEL
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Abstract In order to verify the stability and the minimum roof thickness of Xiamen subsea tunnel which is under design now，3D FEM analysis is made for 4 profiles along the longitudinal of the tunnel with elastoplastic fracture damage model. Compared with original design of the tunnel，the axial level of tunnel is raised with 2 m and 4 m in the numerical analysis. From the numerical results of stresses，displacements，plastic zones and damage zones of rock mass after excavation，it can be concluded that the tunnel is stable even the axial level of tunnel is raised with 4 m in the numerical analysis
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Received: 17 February 2003
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MAO Yuting1, 2, HE Manchao1, 2, LIU Fangzhou3, BAI Xing4, YANG Xiaojie1, 2, TAO Zhigang1, 2*. Development and application of a large-scale physical model system for tunnel creep testing[J]. , 2026, 45(6): 1627-1638. |
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