土木工程毕业设计-30m预应力混凝土简支T形梁桥.doc

PAGE PAGE 10 PAGE PAGE 9 30m预应力混凝土简支T形梁桥 摘要 这种设计预应力混凝土简单的T梁结构，主梁，水平杆，轨道板，桥梁部和支座等部件的上部结构，很明显，主梁是桥的主要承重构件。 他通过横梁和行车道班连接器作为一个整体主梁，使具有良好的横向分布在主梁之间的车辆负载。板面部的石膏，膨胀装置和栏杆等组成，这些结构的主要承重构件，虽然不桥接，但它们的设计和建造桥的直接关系到整体功能和安全此处在此设计也详细的说明。 从这样的设计，受跨中正弯矩的控制，当跨径增大时，跨中由恒载和活载产生的弯矩将急剧增加，是在材料的强度消耗最重力的结构，从而限制了所用的跨越能力一个标准的30米跨度，合理地解决这个设计的问题。 当设计主梁由内力计算，预应力钢筋布置，主梁截面厚度和压力测试，记录和存储，码头等设计，完美建预制预应力混凝土简单的T梁桥检查完全符合要求，使用方法新规范。 这种设计强调了预应力桥梁的使用也反映了桥梁的发展趋势。 关键词 预应力；简支T梁；后张法；应力验算 30m prestressed concrete simple T girder bridge summary This design prestressed concrete simple T beam structure, the upper structure of the main beam, horizontal bar, track plate, bridge section and the stand and other components, apparently, the main beam is the main load-bearing elements of the bridge. His main beam by beam and trace board connector as a whole, so that the vehicle load between the main beam with good lateral distribution. Deck section a plaster, expansion devices and railings and other components, the main load-bearing components of these structures, though not the bridge, but their design and construction of the bridge is directly related to the overall functionality and security here in this design is also detailed explanation. From this design, mainly through cross-shek moment of control when the margin rises through its own weight and live load moment will increase dramatically, is the strength of the material consumed most of the structure of gravity, thus limiting the Spanning capacity used the design of a standard 30 m span and reasonable solution to this problem. When designing the main beam is calculated by internal forces, prestressing steel arrangement, the main beam section thickness and stress testing, track record and storage, piers, etc. Design, perfectly built a prefabricated prestressed concrete simple T girder bridge Checking fully meet the requirements, the methods used with the new specification. This design emphasizes the use in prestressed bri