2015届毕业生毕业论文（设计）.docVIP

山东交通学院 2015届毕业生毕业论文（设计） 题目：沙河中桥施工图设计 -3×20m预应力混凝土简支空心板桥施工图设计 院 别 专 业 班 级 土木11 学 号 姓 名 指导教师 二○一五年六月 摘要 抗震能力强等而成为最富有竞争力的主要桥型之一。设计桥梁跨度为，桥面16m。纵向预应力筋的数目，然后再布置预应力钢丝束。再次，计算预应力损失。ABSTRACT My graduate design issue is the construction design for simply supported hollow slab bridge(3×20m) meter. Prestressed concrete hollow slab beam bridge structure performance, small deformation, a telescopic seam less, smooth driving comfort, small amount of maintenance engineering, seismic ability strong and become the most competitive one of the main bridge.The bridge span is 3×20m, and the bridge deck is 16m. Firstly,Determine the main structure and detail size of the main girder,and it must be consistent with the provisions of the bridge and the construction,considering the influence of bending rigidity and torsional rigidity, design the hollow slab beam.Secondly,the internal force of the structure is analyzed by using the knowledge of structure design principle (including the internal force calculation of dead load and live load).The results of the internal force combination are used to estimate the number of the longitudinal prestressing tendons, and then the prestressed wire bundle is arranged.Moreover,calculation of prestress loss.Then, the checking calculation of the section strength is carried out, including the ultimate state of bearing capacity and the limit state of normal use.In normal use limit state checking calculation including the calculation section of concrete normal stress checking calculation of tensile stress in prestressed bar and the main stress of section. After several adjustments of the steel beam，the beam for the numbers increase with the beam and with a few ordinary steel， you can make Checking the structural safety qualified. Key words: Prestressed concrete，imply supported hollow slab bridge，ombination of internal forces 目 录 摘 要 1 ABSTRACT 2 前 言 1 1 计算依据与基础资料 2 1.1标准 2 1.2 主要材料 2 1.3 设计要点 2 2 方