拱渡槽一般采用抛物线、悬链线等光滑的曲线。由于渡槽是一节一节的,且两端均设有端肋,槽身自重和水重均通过端肋作为集中荷载传给下部支承结构。水利建筑师们根据支承体的受力特点,参考建筑结构上的“八”形钢架,设计了折线洪渡槽。通过湖南省永州市一些灌区中的实用证明,折线拱渡槽在中小型渡槽的建筑上有推广价值。 Arch aqueduct generally parabolic, catenary and other smooth curves. Because the aqueduct is a section and has end ribs at both ends, the dead weight and water weight of the aqueduct are transmitted to the lower support structure through the end ribs as a concentrated load. According to the force characteristics of the support body, the water conservancy architects designed the folding flood flood aqueduct by referring to the “eight” shaped steel frame on the building structure. Through the practical demonstration in some irrigated areas in Yongzhou City, Hunan Province, the folding arch aqueduct has the promotion value in the construction of small and medium-sized aqueduct.