铁路钢筋混凝土简支板梁桥设计

^论文编号:TM046 ^论文字数（绪论到参考文献）:5242,页数:17 附任务书,开题报告，外文翻译，CAD图

摘要
 本文以铁路简支梁桥为例，介绍了铁路简支梁桥的主要截面形式，适用范围，铁路简支梁桥在国内外的发展现状，在国内的施工工艺，设计计算方法以及优缺点。这里重点介绍了铁路简支梁桥的设计计算方法。
 简支梁桥的设计计算方法大致可分为两个方面：主梁的设计和桥墩的设计。主梁的设计主要是通过选定简支梁的主梁截面形式，拟定截面尺寸，然后根据设计资料，应用《混凝土结构设计原理》、《桥梁工程》的相关知识及有关规范，进行荷载组合，计算主梁内力，选择主筋，并对钢筋和混凝土进行应力验算，然后根据计算数据选择腹筋，另外为满足构造要求，还要对架立钢筋、分配钢筋等进行选择，最后对主梁进行裂缝宽度和挠度验算。桥墩的设计主要包括荷载计算，主力和附加力的计算，墩身、墩底截面的横向验算及纵向验算，然后对钢筋进行选择。最后总结在设计过程中的心得体会，提出在设计过程中需要改进的地方，并在以后的学习过程中加以改进。
 
关键词：设计计算方法  主梁内力  主筋  桥墩
Abstract
 In this paper, simply supported railway bridge as an example, the railway bridge beams form the main section, the scope of application, the railway bridge Beam current development at home and abroad, in China's construction technology, design    and calculation methods and the advantages and disadvantages. Here focuses on simple beam bridge rail design method.
 Beam bridge design methods can be broadly divided into two areas: the design of the  main beam and pier design. The design of the main girder is simply supported beam through the selected section forms the main beam to draw cross-section dimensions, and according to design information, application of "concrete structural design," "Bridge," the relevant knowledge and the related codes for load combination, calculate the internal force main beam, select the main reinforcement, and steel and concrete for stress check, and then select the web reinforcement calculations, other construction requirements to meet, but also on the erect steel, reinforcement and distribution of select, the final crack width of the main beam and deflection checking. Pier design include load calculation, the calculation of main and additional force, piers, pier checking the bottom section of the horizontal and vertical checking, and then select bar. At last, in the design process of their feelings and experiences, put forward in the design process needs improvement, and in the future to improve the learning process.

Key  words:  design method    main beam    the main pier

目录
第1章 绪论 1
 1.1概述 1
 1.2设计内容 3
第2章 简支梁尺寸拟定 4
 2.1上部结构梁体尺寸拟定 4
 2.2下部结构桥墩尺寸拟定 4
第3章 主梁计算及配筋设计 5
 3.1主梁内力计算 5
 3.1.1荷载及荷载组合 5
 3.1.2内力计算 5
 3.1.3内力包络图 6
 3.2主梁配筋设计 7
 3.2.1主筋截面选择及配置 7
 3.2.2主筋应力复核 7
 3.2.3箍筋截面选择及配置 8
 3.2.4斜筋的选择及配置 8
 3.2.5架立钢筋及分布钢筋的配置 9
 3.2.6裂缝宽度验算 9
 3.2.7跨中挠度验算 10
第4章 桥墩计算及配筋设计 11
 4.1荷载计算 11
 4.1.1恒载计算 11
 4.1.2竖向静活载计算 11
 4.1.3制动力计算 12
 4.1.4纵向风力计算 13
 4.2墩身底部截面验算 13
 4.2.1墩底截面特性 13
 4.2.2墩身受压稳定性验算 14
 4.2.3墩身底部截面的纵向验算 14
第5章 结论与展望 16
 5.1结论 16
 5.2展望 16
参考文献 18
致谢 19
附录A(外文翻译) 20
附录B(图纸) 26

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