摘要:这座桥是适用于城市高架桥桥梁的主要标准。拟建场地地貌单一，地形较为平坦。设计4跨简支梁跨径30米，桥宽为8+2×0.5m。通过筛选,最后的选择的是预应力混凝土简支箱型梁桥。梁桥为推荐的项目,安排:4×30米,整个桥长120米。主要梁内力计算：使用这个程序结合手算互相检查。使用一个程序计算出最终结果。完成组合的内力,建模估计和配置。预应力钢束按照配置,分散和安排考虑的原则,立足于上部和下部板和大小。引起的预应力损失计算完成后,进行预应力引起的预应力损失计算、强度和极限计算和检查部分。22863
毕业论文关键词: 预应力;上部构造;内力,内力组合;
Abstract：The bridge is applicable to urban viaduct bridge main criteria. Proposed single surface feature,the terrain is relatively flat. Design 4 cross beam span 30 meters, and the wide is 8 +2 × 0.5m. Bridges than alternatives including prestressed concrete continuous girder bridge, a long-span arch bridge. Bridge deck transverse slope by 2%.There are three options open to according to the data, the concrete continuous beam bridge, a long-span arch bridge, the third option is to prestressed concrete simply supported box girder bridge.Through the screening, the final choice is the prestressed concrete simply-supported box girder bridge.Girder bridge as the project, recommended by arrangement: 4 x 30 meters, the entire bridge is 120 meters long. Main beam internal force calculation: calculate using the program combining with the hand to check each other. Use a program to calculate the final result. Complete the combination of internal force, modeling estimation and configuration. Prestressed steel beam according to the configuration, dispersion and arrangement principle, based on the upper and lower plate and size. After the completion of the prestress loss calculation, prestress loss of prestress calculation, strength and limit calculation and check the parts.
Key words: prestressed; the upper structure; Combination of internal force, internal force;
目录
第一章 桥梁结构方案评选    1
1.1 设计资料    1
1.1.1 梁桥名称    1
1.1.2 基本资料    1
1.1.3 设计标准    1
1.2 方案拟定    2
1.2.1 第一方案：预应力混泥土简支箱梁    2
1.2.2 第二方案：大跨度拱桥    2
1.2.3  第三方案：预应力混泥土连续梁桥    3
1.3 方案比较    3
1.4 方案选择    4
第二章 推荐的方案简介以及结构的尺寸拟定    5
2.1 推荐方案简介    5
2.1.1 总跨径    5
2.2 结构尺寸拟定    5
2.2.1 箱梁截面尺寸拟定    5
2.2.2 横隔梁尺寸拟定    6
第三章 主梁内力计算    7
3.1 主梁截面几何特性计算    7
3.2主梁作用效应计算    9
 3.2.1 永久作用效应计算    9
 3.2.2 可变作用效应计算    11
 3.2.2 主梁作用效应计算    17
第四章 预应力钢束的估算与布置    18
4.1 预应力钢束布置    18
 4.1.1 跨中截面及锚固端截面的钢束位置    18
 4.1.2 钢束弯起角度及线形的确定    20
 4.1.3 钢束计算    21
4.2 非预应力钢筋截面面积估算及布置    23
第五章 计算主梁截面几何特性    24
5.1 截面面积及惯性矩计算    24
第优尔章 预应力损失及有效预应力计算    27 中环路高架预应力混凝土简支箱梁桥计算书+图纸:http://www.youerw.com/gongcheng/lunwen_15679.html