钢筋混凝土矩形带横杆渡槽.docx

钢筋混凝土结构课程设计设计题目:钢筋混凝土矩形带横杆渡槽 姓 名： 龙运涛 学 号： 2014001236 年级专业： 2014级水利水电工程 指导老师： 龙远莎 提交时间： 2017年6月 摘要渡槽也叫过水桥。两端与渠道相接。?输送渠道水流跨越河渠、溪谷、洼地和道路的架空水槽。普遍用于灌溉输水，也用于排洪、排沙等，大型渡槽还可以通航。渡槽主要用砌石、混凝土及钢筋混凝土等材料建成。渡槽由进出口段、槽身、支承结构和基础等部分组成。①进出口：包括进出口渐变段、与两岸渠道连接的槽台、挡土墙等。其作用是使槽内水流与渠道水流平顺衔接，减小水头损失并防止冲刷。②槽身:主要起输水作用,对于梁式、拱上结构为排架式的拱式渡槽，槽身还起纵向梁的作用。槽身横断面形式有矩形、梯形、U形、半椭圆形和抛物线形等,常用矩形与 U形。横断面的形式与尺寸主要根据水力计算、材料、施工方法及支承结构形式等条件选定。也有的渡槽将槽身与支承结构结合为一体。③支承结构：其作用是将支承结构以上的荷载通过它传给基础，再传至地基。按支承结构形式的不同,可将渡槽分为梁式、拱式、梁型桁架式及桁架拱（或梁）式以及斜拉式等。梁式渡槽的支承结构有重力式槽墩、钢筋混凝土排架及桩柱式排架等。拱式渡槽的支承结构由墩台、主拱圈及拱上结构组成。关键词：渡槽；支承结构；槽身；水力计算AbstractAqueduct is also called water bridge. Both ends are connected to the channel. Transport channel flows across the river canals, valleys, depressions and overhead troughs. Generally used for irrigation water, but also for drainage, sand, etc., large aqueduct can also be navigable. Aqueduct mainly with masonry, concrete and reinforced concrete and other materials built.Aqueduct consists of import and export section, trough body, supporting structure and foundation and other components. ① import and export: including import and export of gradual changes, and cross-strait channels connected to the trough, retaining walls and so on. Its role is to make the tank flow and smooth flow of channels connected to reduce the loss of head and to prevent erosion. ② trough: mainly from the role of water supply, for the beam, arch structure for the arch-type arch aqueduct, trough also acts as a longitudinal beam. Slotted cross-section in the form of rectangular, trapezoidal, U-shaped, semi-elliptical and parabolic, commonly used rectangular and U-shaped. The form and size of the cross section are mainly selected according to the conditions of hydraulic calculation, material, construction method and supporting structure. And some aqueducts will be combined with the support structure. ③ support structure: its role is to support the structure above the load through it to the foundation, and then spread to the