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南天门 大桥 施工图 设计

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南天门大桥施工图设计,南天门,大桥,施工图,设计

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南天门大桥施工图设计摘要本设计是变截面预应力混凝土连续箱梁的施工图设计,跨径布置为70m+105+70m 的三跨连续梁。设计过程如下:首先,根据设计任务要求，依据现行公路桥梁设计规范,综合考虑桥位的地质、地形条件，按“安全、经济、适用、美观“的桥梁设计原则，进行方案比选，并确定变截面预应力混凝土连续箱梁作为设计方案。其次， 拟定主梁主要构造及细部尺寸， 然后根据设计的要求， 进行结构自重，汽车荷载，人群荷载，温差应力及基础沉降内力计算，最后布置预应力钢束和构造钢筋。最后进行验算，其中包括截面强度验算，抗裂验算，持久状况构件的应力验算,短暂状况应力验算和挠度验算。经验算表明该设计计算方法正确，内力分布合理，符合设计任务的要求。关键词：方案比选；变截面连续箱梁；施工图设计南天门大桥施工图设计ABSTRACTThe design is a construction design of three-spanvariable cross section ofprestressed concrete continuous box girder crossing the highway ,which the span is39m +56m +39 m.The procedure of the design is listed as follows:Firstly, according to the requirements of design task , based on the currenthighway bridge design specifications and the book of bridge engineering, consideringthe geological and topographical conditions of bridge, according to the principles ofbridge design security, economy, applicability and beauty, to take bridge typescheme comparison , and choose prestressed concrete continuous box girder as adesign plan.Secondly, Studying out the main girder structure and detailed dimensions, andthen calculating internal force of structural weight, vehicle load,crowd load, thermalstress and the settlement with the basis of design requirements, and finally layoutprestressed tendons and constructional reinforcement.Finally, Its checking, including checking cross-section strength, crack resistancechecking, persistent component of the stress condition checking, transient state ofstress checking and checking deflection. Experience shows that the design calculationmethod is correct, the internal force distribution is reasonable and meets the designtasks.Key words: scheme comparison; variable cross-section continuous box girder;construction drawing design.南天门大桥施工图设计毕业设计毕业设计(论文论文)计算书计算书题目题目：南天门大桥南天门大桥施工图设计施工图设计课课 题题 类类 别：别： 设计设计 论文论文学学 生生 姓姓 名：名：程彬程彬学学号：号：201018020108班班级：级：桥梁桥梁 1001专业（全称专业（全称） ：桥梁工程桥梁工程指指 导导 教教 师：师：王达、刘杨王达、刘杨 南天门大桥施工图设计预应力混凝土变截面连续梁桥学生姓名：学生姓名：