大厚度自重湿陷性黄土区高速铁路路基新型地基处理技术研究  

Research on New Ground Treatment Technology for High-speed Railway Subgrade in Large-thickness Self-weight Collapsible Loess Area

作　　者：于基宁[1] 高志伟[1] YU Jining;GAO Zhiwei(China Railway First Survey and Design Institute Group Ltd.,Xi'an 710043,China)

机构地区：[1]中铁第一勘察设计院集团有限公司,西安710043

出　　处：《高速铁路技术》2020年第2期94-98,共5页High Speed Railway Technology

基　　金：中国铁路总公司重大攻坚课题(2010G018-B-4)。

摘　　要：随着我国高速铁路建设的快速发展,大厚度自重湿陷性黄土区的地基处理逐渐成为工程设计中的难点和热点问题。本文总结了大厚度自重湿陷性黄土区高速铁路路基工程建设中常用的地基处理方法,在分析不同方法的优缺点及适用性的基础上,提出了阻水+挤密桩的新型地基处理技术。同时,通过室内模型试验、现场试验等研究工作,详细分析验证了该新型地基处理技术的可靠性、实用性和经济性,为大厚度自重湿陷性黄土区高速铁路的地基处理提供了一个新的方向。With the rapid development of China's high-speed railway construction,the ground treatment in the large-thickness self-weight collapsible loess area is becoming a difficult and hot issue in current engineering design.The paper summarizes the common ground treatment methods used in high-speed railway subgrade construction in large-thickness self-weight collapsible loess area and proposes a new ground treatment technology with water blocking and compaction piles based on the analysis the advantages and disadvantages of different methods and their applicability.Through indoor model experiment and field tests,the reliability,practicability and economy of the new ground treatment method are analyzed and verified in detail,which provides a new research direction for the ground treatment of high-speed railways in large-thickness self-weight collapsible loess area.

关 键 词：高速铁路 路基 大厚度 湿陷性 黄土 地基处理 

分 类 号：U213.14[交通运输工程—道路与铁道工程]