高速铁路软土地基处理技术研讨 铁道工程毕业论文

毕业论文

（2013届）

论文题目：高速铁路软土地基处理技术研讨姓名：

系（院）：铁道工程系

专业名称：铁道工程

指导老师：

2013 年07 月03 日

中文摘要

高速铁路路基工程中经常会遇到软土问题，处理的质量与选择的方法将直接影响到轨道结构的稳定性与安全使用，因此软土地基的处理技术对高速铁路建设十分重要。本论文首先阐述了一般软土地基的处理方法，尤其是兰新高速铁路软土地基的特点，对目前常用的软土地基处理方法以及新技术进行总结，然后提出适合兰新高速铁路软土地基处理的方法，并发展和提出了高速铁路软土地基处理的新技术，对兰新高速铁路软土地基常用的处理方法及其施工工艺进行详细介绍。

关键词：软土高速铁路特征地基处理

English abstract

High-speed railway subgr ade engineering of soft soil we often encounter problems and handle quality and choice methods will directly affect the stability of track structure, so with safe use of soft soil foundation treatment technology is very important for high-speed railway construction. This paper firstly expounds the general of the soft soil foundation treatment method, especially

lanzhou-xinjiang high-speed railway, the soft soil foundation for the common characteristics of soft soil foundation treatment methods and new techn ology was summarized, and then proposed suits the lanzhou-xinjiang high-speed railway processing method of soft soil foundation and development and proposed high-speed railway of soft ground treatment of the new technology, high speed railway lanzhou-xinjiang soft roadbed commonly used treatment and construction technology were introduced in detail.

Keywords：Soft soil High-speed railway features Foundation treatment

目录

中文摘要 .................................................................................................................................. - 1 - 英文摘要 .................................................................................................................................. - 2 -

1.软土地基的概念及特征.................................................................................................... -4 -

2.软基的破坏形式 ................................................................................................................ - 4 -

3.一般软土地基处理方法分类、特点及应用范围................................................... - 5 -

3.1换填垫层法 ........................................................................................................... - 5 -

3.2深层密实法........................................................................................................... - 6 -

3.3置换法.................................................................................................................... - 6 -

3.4排水固结法............................................................................................................. - 6 -

3.5化学加固法 ............................................................................................................. - 7-

3.6加筋土法 ................................................................................................................ -7 -

3.7砂石桩法..................................................................................................................... - 7-

3.8塑料排水法 .............................................................................................................. - 9 -

3.9袋装沙井法 ......................................................................................................... - 10-

3.10真空预压法 ........................................................................................................ - 11-

3.11其他加固法......................................................................................................... - 12-

4.针对兰新高速铁路软基处理的技术方法 ............................................................... - 13 -

4.1换填法................................................................................................................... - 13 -

4.2冲击碾压法......................................................................................................... - 14 -

4.3强夯法.................................................................................................................. - 15 -

4.4挤实砂石桩 ............................................................................................................ -16 -

4.5水泥土搅拌法 .................................................................................................... - 16 -