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Full-Text Articles in Civil and Environmental Engineering
Analytical Solution Of Additional Response Of Shield Tunnel Under Asymmetric Jack Thrust, Zu-Xian Wang, Cheng-Hua Shi, Jian-Wen Liu
Analytical Solution Of Additional Response Of Shield Tunnel Under Asymmetric Jack Thrust, Zu-Xian Wang, Cheng-Hua Shi, Jian-Wen Liu
Rock and Soil Mechanics
When shield is driving along a curve alignment or during deviation correction, the asymmetrical thrust will generate an additional bending moment at the head of the tunnel, which will cause construction problems such as longitudinal deformation of the tunnel and dislocation between rings. Based on the theory of elastic foundation beam, the shield tunnel is simplified as a Timoshenko beam in Winkler foundation, an analytical model for evaluating the additional response of the shield tunnel induced the asymmetric thrust is established, and the analytical solutions of longitudinal deformation and internal force of shield tunnel are deduced. Then the correctness and …
Analytical Solution To Consolidation Of Unsaturated Soil By Vertical Drains With Continuous Permeable Boundary, Ai-Fang Qin, Liang-Hua Jiang, Wei-Fang Xu, Guo-Xiong Mei
Analytical Solution To Consolidation Of Unsaturated Soil By Vertical Drains With Continuous Permeable Boundary, Ai-Fang Qin, Liang-Hua Jiang, Wei-Fang Xu, Guo-Xiong Mei
Rock and Soil Mechanics
In this paper, based on the axisymmetric consolidation theory of unsaturated soil and equal-strain assumption, an analytical solution using the homogenization of boundary conditions and eigenfunction method is proposed to three-dimensional consolidation of unsaturated soil enhanced by vertical drains under instantaneous loading, in which the continuous permeable boundary conditions are properly introduced. Then, the proposed solution is verified by the special cases of double drainage boundary conditions. Finally, the solution is analyzed using examples and the results show that the proposed solution can be used to simulate the arbitrary distribution of permeability of the top and bottom boundary by setting …