摘要
探讨了寒冷地区路基填料在降温及冻融循环条件下的环境适应性。重点分析了填料的细颗粒含量、含水率、动态荷载对冻胀特性的影响,以及冻融循环对填料力学特性、水盐迁移和微观结构的影响。研究表明,合理控制填料参数可有效抑制冻胀,而冻融循环会显著改变填料的物理与力学性质,加剧其强度劣化,本研究为寒冷地区路基填料的选择与设计提供了理论依据。
In this paper,the environmental adaptability of subgrade filler in cold region under the conditions of cooling and freeze-thaw cycle is discussed.The effects of fine particle content,moisture content and dynamic load on frost heave characteristics of fillers,and the effects of freeze-thaw cycle on mechanical property,water-salt migration and micro-structure of fillers are emphatically analyzed.The result shows that reasonable control of filler parameters can effectively restrain frost heave,while freeze-thaw cycle will significantly change the physical and mechanical property of filler and aggravate its strength deterioration.As a result,this study provides a theoretical basis for the selection and design of subgrade filler in cold region.
作者
周雨斌
张华明
胡珂鑫
Zhou Yubin;Zhang Huaming;Hu Kexin(Ansteel Engineering Production Operation and Maintenance(Anshan)Co.,Ltd.,Anshan 114000,Liaoning,China)
出处
《冶金设备管理与维修》
2025年第4期60-62,共3页
Metallurgical Equipment Management and Maintenance
关键词
路基填料
冻胀特性
冻融循环
力学特性
subgrade filler
frost heave characteristics
freeze-thaw cycle
mechanical property
