灌溉排水学报2017，Vol.36Issue(12)：81-86,6.DOI:10.13522/j.cnki.ggps.2017.12.014
梯形渠道冻胀数值模拟与边坡系数优化
Numerical Simulation and Slope Coefficient Optimization of Frost Heave of Trapezoidal Channel
摘要
Abstract
A thermo-mechanical coupled numerical model was developed in this paper for trapezoidal lining ca-nal considering the non-linear characteristic of soil freezing at the interface between the foundation and the con-crete lining,as well as the plasticity of the concrete lining.We applied the model to the main canal in Hamatong Irrigation District in Heilongjiang Province in an attempt to help design the insulation measures and cross-sec-tions of the trapezoidal canal.Compared with canals without insulation measures,we analyzed the effectiveness of three insulation measures and different slope coefficient to the frost heave adaptability of the canal.The results showed that the optimal thickness of the canal insulation board in Hamatong Irrigation District was 10 cm on the slope and 12 cm on the bottom by considering engineering safety and economy,in close agreement with the ex-perimental results.The reasonable slope coefficient of the trapezoidal canal was 2 while the properties adapt to frost heaving were better and the cost was relatively low in the situation.These results provide references and the-oretical basis for trapezoidal canal design and operation in Heilongjiang Province and other similar areas.关键词
梯形渠道/保温防冻胀/数值模拟/边坡系数Key words
trapezoidal canal/insulation antifreeze bulge/numerical simulation/slope coefficient分类
农业科技引用本文复制引用
郝晋彩,娄宗科,高凤..梯形渠道冻胀数值模拟与边坡系数优化[J].灌溉排水学报,2017,36(12):81-86,6.基金项目
"十三五"国家重点研发计划课题(2016YFC0400203) （2016YFC0400203）
"十二五"国家科技支撑计划课题(2012BAD08B01) （2012BAD08B01）
