中文摘要：

为了进一步研究矩形多纵梁渡槽结构受力分布规律，以黑龙江省某大型灌区输水渡槽为例，采用ANSYS有限元分析方法对其进行受力分析。结果表明，增加渡槽侧墙及底板厚度能够有效提高渡槽整体受力条件，在满足各项应力及变形指标情况下可适当减小纵梁的高度以节省工程量。该项目的实施有效地解决了该大型灌区水资源匮乏等问题。

英文摘要：

Further studying the structure analysis of large rectangular aqueduct bridge with multi -longitudinal beams , this paper analyses the force for an aqueduct in large irrigation districts in Heilongjiang Province which is based on the finite element software of ANSYS .The results show that increasing the aqueduct sidewall and bottom thickness can effectively improve the stress condition of the aqueduct .The height of the beam can be reduced to save the amount of work in the condition that the stress and deformation index meet the conditions .The problem of the water shortage in the large irriga-tion was solved effectively by the implementation of the project .