论文部分内容阅读
水利灌渠工程一般规模巨大,其结构受到温度、洪水、地震等因素影响并出现不同程度的损坏。灌渠防渗漏衬砌是有效阻止水分流失的方法,从大量防渗漏工程来看,U形混凝土衬砌性能最佳。其具有水力条件好、占地面积少、抗冻能力强等优点。但是西北地区冬季温度较低,U形混凝土衬砌还是会发生冻胀破坏,严重影响灌渠的使用性能。从国内外研究现状出发,指出渠道冻胀破坏研究存在的问题,并以整体式U形渠道混凝土衬砌结构为研究对象,研究了其冻胀破坏力学模型,并对力学模型进行求解分析。希望为今后整体式形混凝土衬砌渠道在西北地区的推广奠定基础。
Water irrigation canals are generally large-scale projects, and their structures are affected by various factors such as temperature, flood and earthquakes with varying degrees of damage. Leakage prevention irrigation lining is an effective way to prevent water loss, from a large number of anti-seepage projects, U-shaped concrete lining the best performance. It has good hydraulic conditions, covers an area of less, antifreeze ability and so on. However, the winter temperatures in the northwest region are low, and the frost heaving failure occurs in the U-shaped concrete lining, which seriously affects the serviceability of the irrigation canal. Based on the research status at home and abroad, the problems existing in the study of canal frost heaving failure are pointed out. The monolithic U-channel concrete lining structure is taken as the research object to study the mechanical model of frost heaving failure and to solve the mechanical model. Hope for the future monolithic concrete lining channels laid the foundation for the promotion of Northwest China.