马鞍型无筋薄壳渡槽,是在无筋渡槽的基础上提出来的一种兼有拱式与梁式渡槽优点的新型渠系建筑结构。应用无筋渡槽的关键,是尽可能把受拉、受弯构件设计成受压或偏心受压构件,以便利用混凝土的抗压强度来达到少用或不用钢材的目的。过去采用的无筋结构渡槽,一般都是在拱上设排架(或设立墙、腹拱)再在排架上搁置U型(或矩形)槽身;槽身专供过水,排架支承槽身,以保持一定的坡降,减短槽 Saddle-shaped non-reinforced shell aqueduct is a new type of canal structure which combines the advantages of arch and beam aqueduct proposed on the basis of non-reinforced aqueduct. Application of non-reinforced aqueduct is the key, as much as possible to pull, bending member designed to be pressed or eccentric compression member, in order to take advantage of the compressive strength of concrete to achieve the purpose of less or no steel. In the past, the non-reinforced aqueduct was generally provided with a U-shaped (or rectangular) groove body on the arch, and a U-shaped Groove body to maintain a certain gradient, shorten the slot