空心板桥毕业设计.doc

内 容 提 要
预应力混凝土空心板桥由于其具备构造简朴、制作以便，受力明确、建筑高度小、构造整体性好、桥梁下部尺寸小、可原则化集中预制生产等诸多长处，当前在公路桥梁工程中应用非常广泛，是高级别公路桥梁中量大面广惯用桥型。
本次毕业设计主梁选用了先张法预应力混凝土空心板。考虑届时间和能力欠缺，只对中板进行了设计计算。
在本次设计中，一方面进行了桥式方案比选，拟定简支板桥方案后，就其进行了构造设计，设计内容重要有：拟定截面尺寸计算控制截面设计内力及其相应组合值；估算预应力钢筋数量并对其进行布置；计算主梁截面几何特性值；计算预应力损失值；正常使用极限状态下构件抗裂性及变形验算；持久状态下和短暂状态下构件截面应力验算。接着对对本桥施工方案进行了简朴概述。
核心词
预应力；空心板；混凝土
Design of Pre-stressed Concrete Hollow Slab Bridge
Zhang Jingjing Tutor：Zhang Daying
Abstract
Pretested concrete hollow slab bridge because of its simple structure，easy production，and force clear，building height is small，structural integrity is good，the lower bridge the advantages of small size，and present in highway bridge construction is widely used.
The graduation project for the design of a highway overpass across lines，the main beam selected pre-tensioned pretested concrete hollow slab. Taking into account the lack of time and ability，only to middle plate design calculations.
In this design，the first bridge for the scheme comparison to determine the program simply supported Itabashi，after the conduct of the structural design，design elements are：developing cross-section size calculation of the control section of the design of internal forces and their corresponding In this design，Estimate the number of pretested steel and layout of their conduct；calculate the geometric characteristics of the main