铁路路基特殊部位压实质量检测指标及标准研究
Research on Inspection Index and Standard of Compaction Quality in Special Parts of Railway Subgrade
张守超1
作者信息
- 1. 中铁第五勘察设计院集团有限公司 北京 102600
- 折叠
摘要
铁路路基特殊部位(桥台锥体、电缆槽及水沟基底、地基处理垫层、支挡结构反滤层)是路基工程施工过程控制的薄弱点,目前相关标准规范对上述路基特殊部位的压实质量检测指标及标准尚不完善或可操作性有待提高.本课题通过国内外相关技术调研、理论分析等方法,针对铁路路基特殊部位特点,对压实质量控制参数进行分析研究,提出采用动态变形模量Evd指标作为铁路路基特殊部位压实质量的控制指标;通过现场对比试验分析,提出路基特殊部位采用动态变形模量Evd控制标准建议值.
Abstract
Special parts of railway subgrade(abutment cone,cable trough and gutter base,foundation treatment cushion,backstop structure filter layer)are the weak points of subgrade engineering.At present,the detection methods and compaction standards of the above special parts of the subgrade are not perfect or their operability needs to be improved.Based on the relevant technical research and theoretical analysis methods at home and abroad,this paper analyzes and studies the compaction quality control parameters for the special parts of the railway subgrade,and puts forward the dynamic deformation modulus Evd index to control the compaction quality of the special parts of the railway subgrade.Based on field comparative test analysis,the standard value of dynamic deformation modulus Evdcontrol for special parts of subgrade is proposed.
关键词
铁路路基/特殊部位/压实质量/动态变形模量/检测指标/控制标准Key words
railway subgrade/special part/compaction quality/dynamic deformation modulus/detection index/control standards引用本文复制引用
基金项目
中国铁路总公司科技研发计划(2016G006-D)
出版年
2024
NETL
NSTL
万方数据