Longitudinal Deformation Model and Parameter Analysis of Canal Lining under Nonuniform Frost Heave

Due to the unique hydrothermal environments, frost heave failure of concrete lining water conveyance canals in cold regions is still frequent. The deformation after heaving and stress distribution calculated by mechanical model can be reference for design. However, previous research mainly focused on cross-section while having little attention longitudinal nonuniform damage. In this study, a bottom under built based Euler–Bernoulli beam Pasternak foundation model, analytical solution obtained. internal analyzed during changes subgrade coefficient, shear rigidity, transition section length, amount inside model. Also, calculation process proved correct. result shows that dangerous cross-sections are at start end sections. maximum normal tangential increase when coefficient modulus length decrease. frozen ground increases constantly, temperature decreases, but same time, rigidity with it. former lining, latter decreases Therefore, process, force coupled these two elements. By analyzing canal Xinjiang Tarim irrigation district, greater than its tensile strength smaller 7 m 0.031 m.