摘要：我国的铁路轨道正在经历着飞速的发展与进步,伴随着对各类交通需求的提升与增长,以及铁路施工技术的进化，对侧壁与周边环境采用的支挡加固的防护措施便显得尤为重要，铁路软土路堤的开发和利用是一种对地基进行加固以及优化的方案，也是一门必须掌握的技术，所以对于软土路堤要做一些必要的处理以及分析，得出符合规律的总结。通过其基础的设计资料，如沿线特征资料，对路基的剖面与荷载进行相关设计，并验证它的边坡稳定性，除了路基之外，针对两种挡土墙做相应的设计计算，分为重力式挡土墙与桩板式挡土墙，还有在路基防护方面，对防护边坡的方法与准则通过分类讨论来分析。

关键词： 软土；路堤；铁路；支护

Design of embankment and support for railway soft earth road

Abstract:Railway track in our country is experiencing a rapid development and progress, along with to the ascension of all kinds of traffic demand and growth, and the evolution of the railway construction technology, on the side wall and the surrounding environment of the reinforced retaining wall used it becomes very important protective measures, development and utilization of railway soft dirt road embankment is a foundation for reinforcement as well as the optimization scheme, is also a must master the technology, so for the soft dirt road embankment to do some necessary processing and analysis, it is concluded that conform to the regularity of summary. Through its basic design data, such as along the characteristic data, to related design of subgrade section and load, and verify its slope stability, in addition to the subgrade, in view of the two kinds of calculation in the design of retaining wall accordingly, pided into plate gravity retaining wall and pile retaining wall, and in roadbed protection, for the protection of the slope to analyze classification methods and standards through discussion.

Key Words:Soft soil;Embankment;Railway;The supporting

目录

1绪论 3

1.1课题的目的和意 3

1.2国内外研究现状与水平 3

1.3本课题的重点与难点 4

2设计资料 6

2.1基本资料 6

2.1.1沿线特征资料 6

2.1.2地震基本烈度 6

3路基设计 7

3.1路基面剖面设计 7

3.2路基荷载设计 8

3.3影响边坡稳定性的因素 10

3.4边坡稳定性的验算 11

4挡土墙设计 16

4.1重力式挡土墙设计 16

4.1.1重力式挡土墙截面设计 16

4.1.2土压力计算 16

4.1.3挡土墙稳定性验算 19

4.2桩板式挡土墙设计 16

4.2.1桩板式挡土墙荷载设计 21

4.2.2土压力计算 22

4.2.3内力及配筋计算 23

5路基防护 27

5.1边坡防护施工 27

5.2路基防护的施工原则 28

5.3常用的路基防护方法