Optimal Analysis of Anti-frost Heaping Canal with Cross Section of Trapezoidal Slopes and Curved Bed
AN Peng
XING Yichuan
ZHANG Aijun
ZHAO Lei
CHENG Dawei
Abstract：Trapezoidal canals with curved-bedare is often used in seasonal freezing regions, but their design is based on experiences and standards whichis prone to frost heaping. In this paper, we proposed a new method to optimize the channel design. The method consists of an optimal structure model and a simplified"frozen soil-lin-ing"model. The objective of the optimization is to minimize the costs of a unit length of canal with constraints on economic practical cross-section and the largest normal displacement and stress of the lining. We firstly simu-lated the highly nonlinear normal frost-heaving force using the initial displacement method in which the effective friction between the lining and the frozen soil was computed using the Mohr-Coulomb contact approach. The parametric model for canal under frost-heaving was then developed usingVersion. 2 ANSYS package written in-APDL programming language. Practical application of the model showed that the optimized cross section of the lining can resist cracking and, in the meantime, savedland by 207 m2/km and reduced the lining thickness of the canal to 0.3 cm. The proposed model has implication in structure design of channels.
Keywords：canalstructure optimizationanti-frost designnumerical simulation
Publication Date：2017-01-01
Online Publishing Date：2026-09-12(First online date of this platform, not the publication date of the document)
Pages：7( 56-62 )