铁路工程粗颗粒土路基填料研究现状与发展综述  

Research Status and Development Review of Railway Coarse-grained Soil Subgrade Filling

作　　者：陈晓斌[1,2] 郭云鹏 蔡德钩 尧俊凯[3] 肖源杰 CHEN Xiaobin;GUO Yunpeng;CAI Degou;YAO Junkai;XIAO Yuanjie(School of Civil Engineering,Central South University,Changsha 410075,China;MOE Key Laboratory of Engineering Structures of Heavy Haul Railway,Changsha 410075,China;China Academy of Railway Sciences,Beijing 100081,China)

机构地区：[1]中南大学土木工程学院,长沙410075 [2]重载铁路工程结构教育部重点实验室,长沙410075 [3]中国铁道科学研究院,北京100081

出　　处：《路基工程》2021年第3期1-11,共11页Subgrade Engineering

基　　金：国家自然科学基金资助项目(51608533);中国铁道科学研究院科技研究开发计划重大课题(2019YJ026)。

摘　　要：基于铁路路基工程领域粗颗粒土路基研究现状,分析总结了粗颗粒土压缩变形和路基碾压的研究动态,涉及粗颗粒土压缩特性、粗颗粒土破碎、蠕变与长期变形、界面相互作用、剪胀弱化、压实指标与粗颗粒土路基智能建造等方面。探讨了新的发展方向:需继续深化研究路基动力学理论,研发路基智能填筑成套装备,将路基设计方法、工程施工和营运养护向粗颗粒土细观结构信息反馈的智能化方向推进。Based on the research status of coarse-grained soil subgrades in railway subgrade engineering,the research trends of coarse-grained soil compressive deformation and coarse-grained soil subgrade compaction were analyzed and summarized,involving the compression characteristics of coarse-grained soil,crushing,creep and long-term deformation,interface interaction,dilatancy weakening,compaction index and coarse-grained soil subgrade intelligent construction,etc.The new development direction is discussed.i.e.,it holds necessary to continue to deepen the study of the dynamics theory concerning subgrade and develop intelligent filling package,pushing the subgrade designing methods,engineering construction and operation maintenance in the intelligentized direction for the microstructure information feedback of the coarse-grained soil.

关 键 词：粗颗粒土 铁路路基 路基碾压 细观组构 智能建造 

分 类 号：TU44[建筑科学—岩土工程]