Calculation Method for Frost Heaving Force of Canal Based on Deflection Equations
LI Hongbo
TIAN Juncang
XIA Tian
WANG Bin
Abstract：The canal lining in seasonal frost regions was easily to be damaged due to frost deformation.[Objec-tive]Investigate mechanism of frost heaving damage of canal lining.[Method]Method of theoretical basic com-putational mechanics was adopted ,and the deflection equation of straight slope plate of U-shaped canal was es-tablished by considering weight force of canal lining, normal frost heaving force, normal freezing force and tan-gential freezing force, we established u-shaped channel straight slope plate deflection equation. In addition, the unknown frost heaving force and most dangerous sections of straight slope plate of canal was given by solving si-multaneous equations, according to actual value of frost heave amount in different parts of canal lining plate.[Re-sult]①The method was precise and simple to calculate the most dangerous section location and unknown frost heaving force of channel slope plate;②Comparison between analytical solution value of the model and actual val-ue of frost heave amount showed that the analytical solution was highly consistent with the actual value.[Conclu-sion]Thus the model can be applied to solve the frost heaving force problems of canal lining and provide new ideas for frost computing theory of canal.
Keywords：canal lining platedeflection equationfrost heave amountfrost heaving forcemost dangerous sec-tions
Publication Date：2018-01-01
Online Publishing Date：2026-09-12(First online date of this platform, not the publication date of the document)
Pages：5( 77-81 )