灌溉排水学报2017，Vol.36Issue(11)：56-62,7.DOI:10.13522/j.cnki.ggps.2017.11.011
弧底梯形渠道抗冻胀结构优化与数值模拟
Optimal Analysis of Anti-frost Heaping Canal with Cross Section of Trapezoidal Slopes and Curved Bed
摘要
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.关键词
渠道/结构优化/抗冻胀设计/数值模拟Key words
canal/structure optimization/anti-frost design/numerical simulation分类
农业科技引用本文复制引用
安鹏,邢义川,张爱军,赵磊,程大伟..弧底梯形渠道抗冻胀结构优化与数值模拟[J].灌溉排水学报,2017,36(11):56-62,7.基金项目
国家自然科学基金项目(51379220) （51379220）
中国博士后基金项目(2016M602740) （2016M602740）
中央高校基本科研业务费项目(310826161001) （310826161001）
