论文总字数：34145字

摘 要

..........................................................................................................2

翻译 ..........................................................................................................3

第一章 设计资料......................................................................................4

1.1 工程概况...............................................................................................................4

1.2 技术标准...............................................................................................................4

1.3 参考文献...............................................................................................................4

第二章 上部结构尺寸拟定......................................................................6

2.1桥型介绍................................................................................................................6

2.2 桥跨布置...............................................................................................................6

2.3截面选择与尺寸的拟定........................................................................................6

2.4 梁底曲线...............................................................................................................6

2.5 横截面设计...........................................................................................................7

第三章 毛截面的集合特性......................................................................8第四章 内力计算....................................................................................13

4.1由MIDAS可得恒载作用下的弯矩图和剪力图....................................................13

4.2活载内力计算.......................................................................................................14

4.3内力组合及内力包络图.......................................................................................15

4.4短期效应组合弯矩图和剪力图...........................................................................16

第五章 预应力钢束的估算及布置........................................................17

5.1预应力钢筋面积的估算.......................................................................................17

5.2预应力钢束布置...................................................................................................21

5.2.1横截面布置.......................................................................................................22

5.2.2立面及平面布置 .............................................................................................23

5.3后张法预应力钢筋布置的具体要求...................................................................24

5.4预应力锚具的选择...............................................................................................24

5.5非预应力钢筋的布置...........................................................................................25

1. 截面截面特性............................................................................26

第七章 预应力损失及有效预应力的计算............................................27

7.1 预应力损失计算..................................................................................................27

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