1、 本科生毕业设计（论文） I 摘 要 本文是对福隆大桥进行的初步设计，拟定了三个方案： 先简支后连续 预应力混凝土梁桥、混凝土钢构桥、 斜拉桥 三个桥型方案。结合了实际的情况进行比选，选定为等截面预应力混凝土连续梁桥，并且将跨径定为 8 个 30m。进而对等截面预应力混凝土连续梁桥方案进行了详细设计。然后根据相关规定和参考以建造完成的近似桥梁，拟定主梁结构尺寸。利用桥梁博士进行建模并对成桥后的内力进行分析并估算结构配筋面积。然后进行配筋，根据配筋结果进行全桥结构安全验算，根据结果表明主梁结构满足设计要求。在设计过程中，按照设计要求同时进行工程图绘制 。 关键词 ：预应力混凝土；连续梁桥；初步设
2、计；方案比选 本科生毕业设计（论文） II Abstract This paper is the preliminary design of Fulong bridge, there are three scheme：Simply supported continuous beam bridge、 Concrete bridge、 cable stayed bridge. Combined with the actual situation for comparison,selected for the section of prestressed concrete continuous gi
3、rder bridge， and span will be a (30 8 m). Then the equal cross section of prestressed concrete continuous girder bridge scheme was designed in detail， then according to the relevant provisions, and reference to build similar Bridge， develop girder structure size.Using Doctor Bridge modeling and anal
4、ysis of the stress of the estimation and structural reinforcement area.And then to carry on the reinforcement ， according to the results on the safety checking of the whole bridge structure reinforcement， according to the results show that the main beam structure to meet the design requirements， In the design process, according to the design requirements for engineering drawing at the same time. Keyword: prestressed concrete； Simply supported continuous beam bridge； preliminary design； scheme comparison
