高铁有砟轨道路基注浆过程冒浆分析和控制  

Analysis and control of mud spillover in high⁃speed railway ballast⁃track subgrade caused by grouting

作　　者：韩笑 凌贤长[1,2,3] 田爽 丛晟亦[1,2,3] HAN Xiao;LING Xian-zhang;TIAN Shuang;CONG Sheng-yi(College of Civil Engineering,Harbin Institute of Technology,Harbin 150090,China;Chongqing Research Institute,Harbin Institute of Technology,Chongqing 401135,China;Heilongjiang Research Center for Rail Transit Engineering in Cold Regions,Harbin 150090,China)

机构地区：[1]哈尔滨工业大学土木工程学院,哈尔滨150090 [2]哈尔滨工业大学重庆研究院,重庆401135 [3]黑龙江省寒区轨道交通工程技术研究中心,哈尔滨150090

出　　处：《吉林大学学报（工学版）》2024年第2期506-515,共10页Journal of Jilin University:Engineering and Technology Edition

基　　金：国家重点研发计划项目(2018YFE0207100);国家自然科学基金项目(41731288,42102311);中国博士后科学基金项目(2021M701014)。

摘　　要：采用COMSOL Multiphysics有限元软件建立高铁有砟轨道路基三维注浆模型,以注浆压力、注浆深度、注浆下倾角度、注浆管间距为主要参数进行了数值模拟研究。研究结果表明:上表面通量可很好地表征冒浆情况,上表面通量与注浆压力具有显著正相关性,注浆压力每增大0.1 MPa,通量线性增大约0.05 kg/m^(2)·s;注浆深度、注浆下倾角度、注浆管间距的增大会使表面通量减小;注浆压力对冒浆影响最为显著;采用袖阀管分段和施加上盖层的联合注浆方法能有效控制高铁路基注浆过程中的冒浆问题。COMSOL Multiphysics finite element software was used to establish a three-dimensional grouting model of high-speed railway ballast-track subgrade.Taking grouting pressure,grouting depth,grouting downward inclination angle and grouting pipe spacing as the main grouting parameters,a numerical simulation study was conducted.The results showed that:The upper surface flux can be used to characterize the amount of grouting.In the process of grouting,the amount of surface mud spillover is significantly positively correlated with the grouting pressure.When the grouting pressure increases by 0.1 MPa,the flux linearly increases by about 0.05 kg/m^(2)·s.The surface flux decreases with the increase of grouting depth,downward inclination angle and grouting pipe spacing.Grouting pressure has a significant effect on the grouting effect.The combined construction method of sleeve valve tube section and upper cover layer is adopted,which can effectively control the mud spillover problem.

关 键 词：高速铁路 有砟轨道 冒浆 有限元模拟 施工优化 

分 类 号：U215.7[交通运输工程—道路与铁道工程]