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大桥 号桥 施工图 设计

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云溪大桥（2号桥）施工图设计,大桥,号桥,施工图,设计

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云溪大桥（2 号桥）施工图设计云溪大桥（2 号桥）施工图设计摘要本设计采用的是满堂支架施工方法，全桥总长 125m，跨径布置为 340m，上部结构采用单箱单室箱梁；下部结构为柱式桥墩。设计过程如下:首先,根据设计任务书的要求， 依据现行公路桥梁设计规范,综合考虑桥位的地质和地形条件，按“安全、适用、经济、美观“的原则，进行方案比选，筛选出最合适的桥型方案。然后进行主梁的细部尺寸拟定，根据规范要求，分别进行了结构自重，汽车荷载，温差次内力及基础沉降内力计算并完成内力组合。依据以上数据，布置预应力钢筋和普通钢筋。最后依次进行截面强度验算，截面抗裂验算，持久状况构件的应力验算，短暂状态应力验算及挠度验算。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： 连续梁桥；方案比选；预应力；验算云溪大桥（2 号桥）施工图设计CONSTRUCTION DRAWING DESIGN OFYUNXIBRIDGE (THE 2ND BRIDGE)ABSTRACTABSTRACTThis design uses a full framing construction methods, full-bridge length of 125m, spanarrangement of 340m, the upper structure of a single tank single-chamber box girder;substructure of column pier. The design process is as follows:First, according to the design requirements of the mission statement, according to theexisting highway bridge design specifications, considering the bridge site geological andtopographical conditions, according to the principle of safe, suitable, economic, aesthetic,and carried scheme selection, screening out the most appropriate bridge type scheme.Then detail the size of the main beam formulation, according to regulatory requirements,were carried out structural weight, vehicle load, temperature of secondary forces andfoundation settlement calculation of internal forces and complete combination of internalforces. Based on the above data, and general arrangement of prestressing steel reinforcement.Finally, section strength checking in turn, cross-section crack resistance, stress lastingcondition member checking, checking and transient state of stress deflection checking.Experience shows that the design and calculation methods calculate the correct, rationaldistribution of internal forces, in line with the requirements of the des