Research on FEM Analysis Reinforcement Method for Tunnel Lining Based on ANSYS
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Abstract:
Hydraulic tunnel bears loads such as water pressure, rock pressure, and elastic resistance, so reinforcement is often needed. In this paper, a FEM analysis reinforcement method was proposed based on FEM and secondary development of ANSYS. A whole FEM model of concrete lining and its surrounding rock mass was developed to analyze the stress distribution of the lining. With the post-processing function of ANSYS, the stress distribution and tensile force of the controlling sections can be obtained and reinforcement calculation was then performed. The reinforcement quantity determinate by this method was similar to that obtained from the standard method The FEM analysis reinforcement method was applied to the reinforcement design for the headrace tunnel lining of the ITACHI hydropower station, which indicated that the method is reasonable and feasible.
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