[交通运输]4×45m预应力混凝土简支T型梁桥.doc

本 科 毕 业 题 目 4×45m预应力混凝土简支T型梁桥 学 院 城乡建设学院 专 业 土 木 工 程 学生姓名 李 长 春 学 号 200810211335 年级 2008级 指导教师 王 伟 职称 讲 师 2012 年 5 月 28 日4×45mThe prestressed concrete simply-supported T bridge design Specialty: civil engineering Student Number: 200810211335 Student: Li Changchun Supervisor: Wang Wei Abstract：This design USES the fabricated the simply supported beam structure T, the upper structure by the beam, the main girder, driving DaoBan, bridge part and bearing of, is the main girder bridge bearing component. Its main the beam and driving through the DaoBan connection to become whole, make the vehicle load in the beams have good between transverse distribution. Bridge deck part includes bridge deck pavement, extendable devices and baluster etc. This design is mainly affected by the control of the bending moment across chung, span increases, the cross by constant load in live load and the bending moment caused will increase, is the strength of the material for the structure of gravity consumption, which limit the ability of the cross. This design USES the 44.95 m standard span, in the design of main girder internal force calculation, stress by steel girder layout, strength and stress checking and cross section driving DaoBan and bearing, pier and so on design, constructed a fabricated prestressed concrete simply-supported T shape beam bridge, the checking fully meet the requirements, the method and the corresponding standard. This design is a key to highlight in the application of prestressed bridge, this also reflected in our country the trend of the development of the bridge. Key words：prestressed；Jane a T beam；Zhang method after；Stress checking 目录 绪论 1 1 设计资料及构造布置 2 1.1 设计资料 2 1.1.1 桥面跨径及桥宽 2 1.1.2 设计荷载 2 1.1.3 材料工艺 2 1.1.4 设计依据 2 1.2 构造布置 3 2 主梁截面几何特性计算 4 2.1 截面几何特性 4 2.2 检验截面效率指标ρ 5 3 主梁内力计算 6 3.1 恒载内力计算 6 3.1.1