Narrow Results

In tunnel engineering, the forms of lining structure usually are similar. In order to conveniently and quickly evaluate and analyze the tunnel lining structure safety, based on the general finite element software ANSYS, a parameterized model for tunnel lining structure safety analysis with APDL and UIDL was researched in this paper. The results show as follows: The developed parameterized model using the numerical method of limit analysis of strata structure may not only conveniently and quickly evaluate and analyze the tunnel lining structure safety, but also analyze and calculate the safety factor of tunnel lining structure taking into account the effect of tunnel excavation process. The applicability and simplicity of the developed parameterized model in the paper also support its usefulness.

In order to economically and quickly design the tunnel lining structure based on the general finite element software ANSYS, a design optimization module of the tunnel lining structure with APDL and UIDL was studied in this paper. The results show as follows: the TUNNEL_ANALYSIS module developed in the paper can conveniently calculate internal forces and safety factors of tunnel lining structure, which may quickly evaluate and analyze the tunnel lining structure safety; the design optimization module developed in the paper may obtained the results of optimization conveniently for the tunnel lining structure. The applicability and simplicity of the design optimization module developed in the paper also support its usefulness. The case validation shows that the module may satisfy the requirements of engineering and study.

In this paper, we exploit the contact unit (TARGE170 and CONTA174) in ANSYS analysis software to simulate the secondary lining structure and waterproof material of tunnels. Then the longitudinal deformations of the secondary lining structure in air temperature field for cold-region are computed based on instances under different temperatures respectively. Finally, we compare the computation with the data field observed and analyze the results.