Simulation Analysis of Frost Heare Characteristics of Channel Lining Structures
[Purposes]This study aims to establish a numerical calculation model for the concrete lining structure of the channel,in order to gain a deep understanding of the temperature changes and deforma-tion characteristics of the concrete lining structure and the soil of the channel foundation under frost heave conditions.[Methods]A numerical model was established using finite element software,which in-cludes the channel lining structure and the soil of the channel foundation.The influence of soil tempera-ture on the channel foundation was considered,and the temperature at the bottom of the channel and the frost heave displacement of the lining structure were simulated and calculated.[Findings]The results show that regardless of whether the lining structure and the canal foundation soil consider contact or not,the temperature change of the canal foundation soil is the same at different depths.In the lining structure considering contact,the frost heave displacement of the shaded and sunny slopes is greater than that of the canal bottom.[Conclusions]The distribution pattern of soil temperature in the canal foundation is consistent under the contact or non-contact conditions of the lining structure,and there are significant differences in frost heave displacement and deformation at the top between the shaded and sunny slopes of the lining structure,which has certain reference value for improving the frost heave resistance of chan-nel lining structures.