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RISLimit Analysis for the Face Stability of a Shallow-Shield Tunnel Based on a Variational Approach to the Blow-Out Failure Mode
Publisher: American Society of Civil Engineers
Abstract: The soil in front of a shield tunnel face can be pushed toward the ground surface if the support pressure is higher than the threshold that causes blow-out failure of the tunnel face. Most of the failure mechanisms used ...
Finite Element Analysis on Mechanical Performance of Concrete-Filled Steel Tubular Latticed Column with Initial Stress
Publisher: American Society of Civil Engineers
Abstract: A finite element method (FEM), which implements ANSYS to analyze the performance of concrete-filled steel tubular (CFST) latticed column with initial stress, was presented. Studies showed that the FEM results agreed well ...
Upper Bound Limit Analysis-Based Determination of the Influence of a Non-Associated Flow Rule on the Stability of Shallow Tunnels
Publisher: American Society of Civil Engineers
Abstract: On the basis of a non-associated flow rule and the upper bound theorem for limit analysis, the expression of surrounding rock pressure on shallow tunnels was derived by constructing a simple failure pattern. Strength ...