基于 ANSYS的混凝土衬砌渠道冻胀破坏有限元分析

摘要

我国农业用水量巨大，但是用水效率低，浪费现象严重，因此研究节水措施具有重要意义。混凝土衬砌输水渠道是我国农业灌渠的主要形式。我国国土面积的54％位于季冻区，混凝土衬砌输水渠道在冬季发生冻胀破坏，会严重影响防渗效果。从国内外研究现状出发，分析了混凝土衬砌渠道冻胀破坏机理及影响因素。研究表明，基土、温度场、湿度场、渠道走向均会影响冻胀破坏程度。%Agricultural water consumption is huge , but the low efficiency of water use , waste is seri-ous, so the water saving measures is of great significance.Concrete lining channel is the main form of agricultural irrigation system.54%of the country′s territory is located in the season frozen zone , con-crete lining channel frost heaving damage in winter , will seriously affect the seepage prevention effect.Starting from the research status at home and abroad , this paper analyzes the concrete lining channel frost heaving damage mechanism and influencing factors.Research shows that:the soil tem-perature field and humidity field , cross section form and lining structure will affect the frost heaving damage.