## 装配式预应力混凝土空心板简支梁桥设计

Title    Design of prefabricated prestressed concrete hollow slab girder bridge
Abstract
This paper is about the Design of prefabricated prestressed concrete hollow slab girder bridge. The first part of this design is to think out 3 practical plans with the combination of engineering geological materials,technical requirements and the rules of the design standards,as well as some references to the all-ready-existing bridges. The second part is about the sector of structure design. Taking advantage of the existing datas and AutoCAD to draft the structure and measurement of the bridge, then, using Dr Bridge ----a sort of software applying in this aspect, to establish the finite meta model,whose purpose is to serve for the structural analysis,internal-force calculation and prestress calculation. The third part ,is the sector of checking. Applying Dr Bridge to the checking of the cross section, analyzing the internal force combination. Finally, make a little adjustment to this design to make sure the security and the stability of the bridge’s structure.

Keywords  assembly type  hollow slab  prestressed force   structural calculation

1绪论与设计说明1
1.1 预应力混凝土简支空心板梁桥文概述1
1.2 设计基本要求2
1.3 毕业设计的目的和意义4
2方案比选5
2.1 总体设计原则5
2.2 方案比选5
2.3 三种桥型方案特点比较14
3上部结构设计与计算16
3.1 设计基本资料16
3.2 主梁几何特性计算18
3.3 设计荷载计算23
3.4 结构离散与计算图示26
3.5 主梁活载内力计算29
3.6 内力组合33
3.7 主梁预应力钢筋束及布置34
4截面验算36
4.1 预应力损失及有效预应力计算36
4.2 持久状态承载能力极限状态下的截面验算40
4.3 持久状态正常使用极限状态验算40
4.4 在作用短期效应组合下的正截面抗裂验算41
4.5 正截面混凝土压应力验算42
4.6 短暂状况下构件的应力验算43
4.7 短暂状况下构件的应力验算44

1  绪论与设计说明
1.1  装配式预应力混凝土简支空心板桥梁概述
1.1.1  空心板简支梁特点

------分隔线----------------------------