铁路选线设计毕业设计

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摘 要

铁路是现代文明的一项巨大工业成就，在国民经济的发展过程中发挥着不可或缺的作用，因此在本次铁路选线设计当中，充分结合当地地形的实际条件，力求作到行车安全平顺、节约资金、布置合理、线形美观。

本篇为Ⅲ级铁路东南村—九龙江段选线设计。此地区地形属于山岭重丘，路段全长4630m。设计内容主要是依据《铁路线路设计规范》、《铁路选线设计》和《轨道结构》等文献进行平面线形设计、纵断面设计、横断面设计、边坡稳定性验算、挡土墙设计以及轨道结构设计。平面线形设计主要是利用纬地软件进行纸上定线、平曲线要素确定；纵断面设计包括地面高程、设计高程、坡段设计和竖曲线要素；横断面设计是根据地质条件及《铁路路基支档物设计规范》，绘制出每桩横断面，同时对路基边坡稳定性分析，确定临界高度，加上挡土墙。

本文对轨道结构的钢轨、轨枕、道床以及曲线轨道的超高、加宽分别进行了设计，最后根据运营条件对轨道强度进行验算。

本设计在制图方面严格按照中华人民共和国国家标准《道路工程制图标准》进行，采用纬地CAD制图，理正岩土对土坡和挡土墙进行验算。

关键词：铁路选线设计 纵断面 横断面 挡土墙 边坡稳定性 轨道结构

1 ABSTRACT

As an important patten of the transportation, railway play a crucial function as the devolpment of national economics. Hence, this design of railway completely decent for the geographic shape and endeavor to chase the stability of the quality, the reasonableness of the expense and the dignified apprearence of the linearity.

This thesis intends to design a construction plan for the class Ⅲ railway from southeast Village to the jiulong river. This regional topography is the includes linear design, vertical section design, cross section design, slope stability calculation, retaining wall design and orbit structure design in accordance with the National Standard , and . The plane linear design includes information compiling, lines drawing on paper, fix on requisites of curves by WeiDi CAD. Vertical section design is comprised of road elevation, design elevation, slope design and vertical curve elements; Contents of design are fixing standard in according with geological condition and ; At the same time, it analyzes the stability of subgrabe, determines the critical a construction plan for steel rail, sleeper, ballast, curve orbit tilt and curve orbit broaden. At last, this thesis intends to check the strength with operating condition.

The design is strictly in accordance with the National Standard of People's Republic of China and uses WeiDi CAD to make charts. Analysis of slope stability by LiZheng.

Key words: Railway line selection design Vertical section Cross section Retaining wall Slope stability Orbit structure

绪论············································································································ 第一章 总体说明 ······················································································· 1 1.1项目背景 ······························································································· 1 1.2设计任务及要求 ······················································································ 2 1.3沿线自然地理、气候、地质、水文气象等状况 ·············································· 2 1.4设计原则 ······························································································· 3 第二章 平面线性设计 ················································································· 4 2.1选线 ····································································································· 4 2.1.1线路概述 ····························································································· 4 2.2定线的基本方法 ······················································································ 5 2.2.1紧坡地段定线······················································································· 5 2.2.2缓坡地段定线······················································································· 6 2.3平面技术指标的确定 ················································································ 7 2.3.1直线 ··································································································· 7 2.3.2夹直线 ································································································ 7 2.4圆曲线 ·································································································· 8 2.4.1圆曲线的几何要素 ················································································ 8 2.4.2圆曲线最小曲线半径 ············································································· 8 2.4.3最大曲线半径······························································ 错误！未定义书签。 2.4.4缓和曲线 ···································································· 错误！未定义书签。 2.5 曲线汇总 ····································································· 错误！未定义书签。 第三章 区间线路纵断面设计 ················································· 错误！未定义书签。 3.1 纵断面设计概述 ···························································· 错误！未定义书签。 3.2 线路的最大坡度 ···························································· 错误！未定义书签。 3.3线路的限制坡度 ····························································· 错误！未定义书签。 3.3.1 影响限制坡度选择的因素 ·············································· 错误！未定义书签。 3.4 坡段长度 ····································································· 错误！未定义书签。 3.5坡段连接 ······································································ 错误！未定义书签。 3.5.1相邻坡度差 ································································· 错误！未定义书签。 3.5.2竖曲线 ······································································· 错误！未定义书签。 3.6纵断面设计汇总 ····························································· 错误！未定义书签。 3.7.1桥涵地段的纵断面设计 ················································· 错误！未定义书签。 3.7.2隧道地段的纵断面设计 ················································· 错误！未定义书签。 3.7.3桥梁、隧道布置 ·························································· 错误！未定义书签。 第四章 横断面设计 ··························································· 错误！未定义书签。