10.7m铁路框构桥设计

毕业设计说明书

哈大客运专线

泉水河2-10.7m铁路框构桥设计

中国是一个发展中国家，我们现在的首要就是中央政府与地方共同开展城市化进程。并且以它作为发展我国经济的一个重要步骤，并且最终建立起“以大城市为中心，中心城市为枢纽，小城镇为基础，城市与乡镇共同发展的一种体系”。

大城市的发展离不开通畅的交通。交通是城市与经济发展的基础。要实现城市发展的目标，保持城市以快的速度良好的发展趋势，就要进入城市化发展的另一个阶段，我们要实现现代化的城市，就必须建立一个有组织，有效率、现代化的城市道路交通系统，来发展城市。

随着城市化的发展，不通畅的路网已成为城市交通的最大阻碍。所以我们就要求在运营次数频繁的铁路线上修建立交桥，本次设计的框构桥作为上能铁路，下能公路的的立交形式具有明显的优势。

哈大客运专线泉水河框构设计为双孔10.7m有立交要求的铁路中桥，在铁路中小桥梁中具有代表意义。本毕业设计从铁三院提供的地质资料和铁路的纵断面出发，按照泉水河工点的实际情况，依据相应的设计规范，依次完成了桥梁尺寸的拟定、桥上荷载的计算、主体结构配筋、地基处理、挡土墙的设计以及工程量的计算并绘制出了施工图。

关键词：交通城市发展立交城市化双孔框构桥

Abstract

China's central and local to the current process of urbanization as an economic development strategy as an important step, and gradually establish the "big cities and big cities as the core, the center hub cities, small towns, based on the coordinated development of urban and rural areas of urban system." Traffic is the city and economic development. To achieve the objectives of urban development, to keep the city economy and the momentum of rapid urban development into a new stage of urbanization, modernization of the city, we must first establish an efficient, modern urban road traffic system to support the city's available sustainable development

With the development of urbanization, roads and railway level crossing of urban traffic bottlenecks. This requires the number of frequent operations to build the railway line overpass, the next frame bridge as a railway on the interchange format has obvious advantages. Passenger loyalty to House Mid Frame 10.7m for the two holes in a interchange requirements of the railway bridge, the railway bridge has a small representative of significance.

The graduation project from the Ministry of Railway Survey and Design Institute provided the third geological data and rail longitudinal starting point according to loyalty to the actual situation of floor work, according to the corresponding design specifications, followed by the completion of the bridge size of the formulation, the calculation of bridge loads , the main structure of reinforced concrete, foundation treatment, retaining wall design and calculation of quantities and draw the construction plans.

Key words: City Transportation Developing Urbanization Frame Bridge Load Internal force

目录

0．绪论.............................................................................................................................................. I 0.1 立交桥建设的重要意义.......................................................... 错误！未定义书签。

0.2 立交桥建设的技术问题....................................................................... 错误！未定义书签。

1. 设计资料 (1)

1.1 基本设计资料 (1)

1.2 材料及工艺 (1)

1.3 地基处理方式 (1)

2. 结构尺寸的拟定 (2)

2.1 桥面防水及桥面排水方式的选定 (2)

2.2 桥面防水及桥面铁路轨顶设计高程及框构关键部位高程的确定 (2)

3. 荷载的计算 (2)

3.1 桥上的荷载计算 (2)

3.2 荷载的组合 (3)

4. 迈达斯建模 (4)

4.1 定义材料和截面并建立结构模型 (4)

4.2 修正结构模型 (5)

4.3 输入荷载并运行有限元分析程序 (5)

5．主体结构配筋 (6)

5.1 用迈达斯软件计算各关键截面的内力 (6)

5.2 根据迈达斯的计算结果，提取各关键截面的内力 (6)

5.3 根据迈达斯模型的提力结果，用容许应力法对截面进行配筋计算，并对钢筋

进行布置 (7)

5.3.1 配筋和布置原则 (7)

5.3.2 配筋计算-边墙体系 (11)

5.3.3 配筋计算-中墙体系 (11)

5.4 在满足下列构造要求的前提下根据配筋计算结果绘制钢筋图 (12)

6．地基处理 (13)

6.1设计依据 (13)

6.2 地基处理计算 (14)