高速公路高架桥毕业设计讲述.doc

学 号：201114770208 毕业设计说明书 GRADUATE DESIGN 设计题目： 广深沿江高速公路大理路高架桥标准图设计 学生姓名： 专业班级： 学 院：建筑工程学院 指导教师： 年月日 摘 要 预应力混凝土先简支后连续箱梁桥是预应力桥梁的一种，我国自50年代中期开始修建预应力混凝土梁桥，至今已有40多年的历史，比欧洲起步晚，但对近年来的发展迅速，在预应力混凝土桥梁的设计、结构分析、试验研究、预应力材料及工艺设备、施工工艺等方面日新月异，预应力混凝土梁桥的设计技术与施工技术都已到达相当高的水平。 本设计拟以广深沿江高速公路大理路高架为设计对象，采用孔跨25米装配式预应力混凝土连续箱梁，下部结构为双柱式桥墩，桩基均为钻孔桩基础。本次设计的主要内容包括：桥型布置，结构中每部分尺寸拟定；选取计算结构简图；计算横向分布系数；恒载内力计算；活载内力计算；主梁截面的几何特性的计算；预应力钢束的估算及布置；钢筋预应力损失计算；主梁的截面强度与应力验算；支座设计；盖梁的设计；墩柱的设计，并按规范进行相关检算。 关键词 箱梁；内力计算和校核；上部结构；下部结构 Abstract Prestressed concrete simple supported continuous box girder bridge is a prestressed concrete bridge, in China since the mid 1950s began construction of prestressed concrete beam bridge, has more than 40 years of history, than the European started late, but in recent years the development of rapid, in the ever-changing of prestressed concrete bridge design, structure analysis, experimental study, prestressed materials and process equipment, construction technology, technical design and construction technology of prestressed concrete girder bridges have reached the very high level. This design is intended to Guangzhou Shenzhen Expressway along the Yangtze River Dali road elevated as the design object, the hole cross 25 meters assembled prestressed concrete continuous box beam, substructure is double column bridge pier, pile foundation are bored pile foundation. The main contents of the design include: bridge layout, structure size of each part worked. Select the structure calculation diagram; transverse distribution coefficient calculation; calculation of the internal force of dead load; live load internal force calculation; calculation of the geometric characteristics of the girder; prestressed steel beam estimates and arrangement; calculating the loss of prestress; girder cross-section strength and force calculation; support design; beam design; design of pier and according to the specification were inspection. Keywords Box girder；internal force calcu