摘要
传统道路工程中的排水和隔热措施通常为独立设计,难以兼顾黄土路基的水分管理与温度调控需求。为此,本文提出一种复合排水隔热系统,用于防治路基水毁、冻胀融沉等工程问题。结果表明:在降雨条件下,系统层上土体体积含水率维持在26.27%~27.38%,未出现饱和现象,且系统层下无水分渗透,表现出较好的排水性能;在冻结条件下,系统层下温度稳定在0.5℃左右,层下土体质量含水率基本保持初始水平,表现出良好的隔热性能。研究结果可为黄土地区道路工程的稳定性研究提供一定的借鉴。
Traditional drainage and insulation measures in road engineering are usually designed independently,making it difficult to balance the water management and temperature control requirements of loess subgrade.Therefore,this article proposes a composite drainage and thermal insulation system for solving some engineering problems such as roadbed water damage,frost heave and thaw settlement.The results are as follows:Under different rainfall intensities and freezing conditions with varying moisture content,the system significantly improved drainage efficiency,blocked water infiltration and maintained soil stability;besides,it effectively reduced the temperature gradient,suppressed water migration and reduced the risk of frost heave.The research results can provide some reference for the stability study of road engineering in loess areas.
作者
樊琦
李辉
王云
赵明泽
FAN Qi;LI Hui;WANG Yun;ZHAO Mingze(School of Civil Engineering and Water Resources,Qinghai University,Xining 810016,China;Qinghai Key Laboratory of Energy-saving Building Materials and Engineering Safety,Xining 81006,China)
出处
《青海大学学报》
2025年第2期48-54,共7页
Journal of Qinghai University
基金
青海省科学技术厅项目(2022-SF-159)。
关键词
黄土路基稳定性
复合排水隔热系统
土柱试验
排水性能
隔热性能
loess subgrade stability
composite drainage and thermal insulation system
soil column laboratory experiment
drainage performance
thermal insulation performance
