本科桥梁专业毕业设计.doc

本科桥梁专业毕业设计 长安大学 毕业设计（论文） 任务书 设计内容（论文阐述的问题） 拟定桥型比较方案三个。 择优推荐方案。 进行推荐方案上部结构内力分析，截面设计。 进行推荐方案的施工验算。 设计原始资料（实验、研究方案） 桥位地址剖面图 桥面设计标高434.71 平曲线半径R=∞ 纵坡i=0 单向横坡i=2% 主要技术指标 设计荷载：汽——超20级。 桥面净宽：0.5+11.25+2.0+11.25+0.5 桥位气温：平均最底-12.3℃，最高+38.1℃ 地震烈度：7度 设计完成后提交的文件和图表（论文完成后提交的文件） 计算说明书部分： 设计指导思想、重点、难点 各个方案的特点，推荐方案的被选理由 推荐方案上部结构的结构计算书、截面设计计算书 推荐方案施工验算书 施工中注意事项 设计小结 图纸部分： 方案比较图 推荐方案整体布置图 推荐方案施工示意图 推荐方案上部结构配筋构造图 细部构造图 主要参考资料 1.《公路工程技术标准》JTGB01-2003 2．《桥规》 3．教材：《桥梁工程》、《结构设计原理》、《基础工程》、《桥梁电算》 4．与推荐方案相类似的手算实例。 The Design of Luo-Xi Bridge,Guangdong General The Luo-Xi bridge,Guangdong,now under construction is a four lane highway bridge downstream of Zhu-Jiang River.The main bridge is designed jointly by Highway Planning and Design Institute,MOC and Highway Surveying,Planning and Design Institute,Guangdong.The whole bridge is constructed by Construction Division,Department of Communication,Guangdong Province.This bridge is at south part of Guangzhou city,across the Zhu-Jiang River.The width of the river is 461m,average depth of water 7.28m,average velocity of water 0.97m/sec.The bed is covered with sand of medium size,clay and weathered sandstone etc.,average thickness 19.2m.The bedrock is brown sandstone which has an average compressive strength 10MPa.The flow is steady and scouring of river bed is not great.Shipping boats are 5000～7000t,navigation width 120m,height 34m.Because the navigation is not closed at construction period,any construction equipment enter the navigation channel is not permitted. Three alternatives were considered in selecting the type of bridge.These are:continuous rigid frame bridge with main span of 180m,continuous grider bridge with mian span of 150m and cable stayed bridge with 2 pylons with mian span of 230m.As the persent trend is to eliminate expansion joints as well as bearings in the design of long bridges,after technical and economical comparison,the scheme of 65+125+180+110m continuous rigid frame is finally adopted in the design.The main bridge is 48