铁丝网U型薄壳渡槽是渠系建筑物中一种先进的结构形式。它的明显特点是,过水断面湿周小,水利半径大,断面刚度大,横向内力小,自重轻,便于安装,地基容易承载。但是这种渡槽壁薄,铁丝网弹性大,易于变形,不易保证施工质量,同时,使用铁模具成本也很高,因而影响了这种渡槽的推广。 Barbed wire U-shaped shell aqueduct is an advanced structure in canal structures. Its obvious characteristic is that the cross section of the wet zone is small, the radius of the water conservancy is large, the section stiffness is large, the horizontal internal force is small, the weight is light, and the installation is easy. The foundation is easy to carry. However, this aqueduct has a thin wall and a large elastic barbed wire, which is easy to deform and difficult to ensure the construction quality. Meanwhile, the cost of using iron molds is also high, thus affecting the promotion of such aqueducts.