水热力耦合作用下的兰新铁路路基土质冻融试验设计  

Design of Freeze-thaw Test for Subgrade Soil of Lanxin Railway Under the Coupling Effect of Water and Heat

作　　者：蔡磊 王顺平 王成斌 王睿[2] Cai Lei;Wang Shunping;Wang Chengbin;Wang Rui(Engineering Department of China Railway Lanzhou Bureau Group Co.,Ltd.,Lanzhou,China;Lanzhou Jiaotong University,Lanzhou,China)

机构地区：[1]中国铁路兰州局集团有限公司工务部,甘肃兰州 [2]兰州交通大学,甘肃兰州

出　　处：《科学技术创新》2025年第9期193-196,共4页Scientific and Technological Innovation

摘　　要：为研究影响铁路路基的影响因素及解决措施,本文选取季节性冻土地区兰新铁路路段路基为研究对象。分析了影响路基变形的各种自然因素和人为因素,并且根据其中相对稳定且基础的土质因素进行了天然含水率烘干法、颗粒分析等基础实验方法对灾害路段的土壤的成分进行界定分类。根据实验测得的土壤的实际情况,基于水热力耦合的相关理论,并在模拟的季节性、永久冻土区域的动荷载基础下,设计土样变形量试验。通过设计试验,试验过程中的冻胀、变形、吸水率等数据得到了充分的记录,这些数据可以为季节性冻土地区的路基灾害解决方案提供参考,并且可以为季节性冻土地区的铁路路基建设维护提供有效的理论指导。To study the influencing factors and solutions of railway subgrade,this article selects the subgrade of the Lanxin Railway section in seasonal frozen soil areas as the research object.Various natural and human factors affecting roadbed deformation were analyzed,and basic experimental methods such as natural moisture drying method and particle analysis were used to define and classify the composition of soil in disaster prone sections based on the relatively stable and basic soil factors.Based on the actual situation of the soil measured in the experiment,and based on the relevant theory of water thermal coupling,and under the dynamic load foundation of simulated seasonal and permafrost areas,a soil sample deformation test is designed.Through the design of experiments,the data on frost heave,deformation,water absorption,and other factors during the testing process have been fully recorded.These data can provide reference for solving roadbed disasters in seasonally frozen soil areas and provide effective theoretical guidance for railway roadbed construction and maintenance in such areas.

关 键 词：水热力耦合 季节性冻土 路基变形 冻融试验 

分 类 号：U213.1[交通运输工程—道路与铁道工程]