文档介绍：湖南高速铁路职业技术学院
毕业论文
( 2013届)
论文题目:客运专线地基的处理技术及沉降计算分析
姓名:
系(院): 铁道工程系
专业名称: 铁道工程
指导老师:
2013 年 06 月 19 日
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【中文摘要】
随着的不断提高,旅客对于乘坐车辆舒适度和速度的要求也越来越高,具体到铁路客运专线而言,对路基变形的要求也越来越严格。武广(武汉—广州)客运专线设计时速为200km/h以上,要求全线一次性铺设无碴轨道,,其部分区段为深厚软土地基,并且松软土及其表层硬壳分布不均匀,传统的地基处理方法相对来说难以控制路基的工后沉降,因此开展严格控制软土地基工后沉降的地基处理技术的研究课题十分迫切。本文通过编程计算、有限元分析和模型试验,对武广线软土地基采用的处理措施进行了研究和分析。首先,详细介绍了软土地基的常用地基处理措施,并参考复合地基、桩基础等沉降计算方法,研究不同地基处理措施的沉降计算方法,并用Visual Basic 。进而分析研究武广客运专线深厚软土地基采用的地基处理技术,对实际工点进行工后沉降计算与分析,为武广客运专线的路基设计提供参考。然后通过在室内填筑的1:10缩尺动态模型试验,对武广客运专线采用的一种新型地基处理措施—桩板结构的沉降特性进行了研究分析,为今后桩板结构的科研及设计提供了参考。最后,研究分析地基沉降的预测技术。提出合理的预测方法,并根据已有的沉降观测资料预测出将来某时的地基沉降及地基的总沉降。
关键词:软土地基沉降计算编程实现动态模拟实验沉降预测
Abstract
With the development of the national economy and the improvement of people's living standard, passengers for vehicle fort and the speed are increasingly high requirements, specific to the railway passenger dedicated line, on the subgrade deformation requirements more stringent. The Wuhan-Guangzhou Passenger Dedicated Line (Wuhan - Guangzhou) design speed of 200km / h, requires all one-time laying ballastless track, and the foundation settlement after construction is not more than , the part of the section for deep soft soil and soft soil surface crust, and its distribution is not uniform, the traditional foundation treatment method is relatively difficult to control the subgrade the settlement after construction, the strict control of soft ground settlement after construction foundation treatment technology research is very urgent. In this paper, through the programming calculation, finite element analysis and model test, the treatment measures of soft soil foundation of Wuhan-Guangzhou line used for the study and analysis. Firstly, introduces mon foundation treatment measures of soft soil foundation, and the settlement calculation method posite foundation, pile foundation, settlement calculation method of foundation treatment measures, and using Visual Basic 6 p