17m预应力混凝土空心板桥设计(含施工方案).doc

郑州航空工业管理学院 毕业论文（设计） 2013届土木工程（道路桥梁方向）专业1109951班级 题 目：X市至P市高速公路跨京广线4×17+23+4×17m预应力混凝土空心板桥设计 姓 名： 学号： 指导教师： 职称： 二О 一三 年 五 月 八 日  X市至P市高速公路跨京广线4×17+23+4×17m预应力混凝土空心板桥设计 班级： 学号： 指导教师： 作者： 摘 要 预应力混凝土空心板桥在我国桥梁建筑上占重要的地位，在目前，中小跨径的永久性桥梁，无论是公路桥梁或者城市桥梁，都在尽量采用预应力混凝土空心板桥。 本设计依据所给的设计资料及《公路钢筋混凝土及预应力混凝土桥涵设计规范》（JTG D62-2004）与《公路桥涵设计通用规范》（JTG D60-2004）等规范进行了桥梁上部结构设计与验算，包括主梁荷载内力计算、预应力钢筋的布置及预应力损失、主梁截面强度与应力验算等方面。全桥总长159m，桥面宽度为净-13+2×0.5m，设计作用为公路-Ⅰ级。本桥上部结构采用4×17+23+4×17m装配式预应力混凝土简支板桥，主跨净跨径23m，计算跨境22.52m，其余部分净跨径17m，计算跨径16.56m。桥跨横截面采用11块先张法预应力空心板，每块板的宽122。同时，本设计对一些重要部位的施工进行了说明。 关键词 空心板；预应力；先张法；结构计算；施工 Abstract Prestressed concrete hollow slab bridge has a most important position in the bridge architecture of China. At the moment, for small and medium-sized span of the permanent bridge, even the Highway Bridge or city Bridges, prestressed concrete hollow slab bridge are wanted as far as possible. The design basis for the design of information and the “Code for Design of Highway Reiforce Concrete and Prestressed Concrete Briges and Culverts”(JTGD62—2004)， the “General Code for Highway Bridages and Culver”(JTGD60—2004) and so on conducted design and the calculation of the upper structure,which contains load internal force of main girder, the layout of prestressed reinforcement and the prestressing loss calculation, main girder cross section strength and stress calculation, etc.The total lenth is 159m and the width is net 13+2×0.5m,design load lever for road —Ⅰ.The bridge length is 4×17+23+4×17m. The bridge belongs to the prestressed concreted structure which is a simple slab bridge which the standard span of main span is 23m and the calculation of span of main pain is 22.52m and the standard span of others are 17m and the calculation of span of others are 16.56m.The bridge across the cross section with 11 pieces of prestressed hollow slab which the width of every board is 122cm.At the same time, some