吉林大学学报(工学版) ›› 2024, Vol. 54 ›› Issue (2): 506-515.doi: 10.13229/j.cnki.jdxbgxb.20220342

• 交通运输工程·土木工程 • 上一篇    

高铁有砟轨道路基注浆过程冒浆分析和控制

韩笑1,2,3(),凌贤长1,2,3(),田爽1,2,3,丛晟亦1,2,3   

  1. 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
  • 收稿日期:2022-03-30 出版日期:2024-02-01 发布日期:2024-03-29
  • 通讯作者: 凌贤长 E-mail:hanx_hit@163.com;lingxianzhang@hit.edu.cn
  • 作者简介:韩笑（1997-），女，博士研究生. 研究方向：交通岩土工程，寒区冻土工程. E-mail： hanx_hit@163.com
  • 基金资助:
    国家重点研发计划项目(2018YFE0207100);国家自然科学基金项目(41731288);中国博士后科学基金项目(2021M701014)

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

Xiao HAN1,2,3(),Xian-zhang LING1,2,3(),Shuang TIAN1,2,3,Sheng-yi CONG1,2,3   

  1. 1.College of Civil Engineering，Harbin Institute of Technology，Harbin 150090，China
    2.Chongqing Research Institute，Harbin Institute of Technology，Chongqing 401135，China
    3.Heilongjiang Research Center for Rail Transit Engineering in Cold Regions，Harbin 150090，China
  • Received:2022-03-30 Online:2024-02-01 Published:2024-03-29
  • Contact: Xian-zhang LING E-mail:hanx_hit@163.com;lingxianzhang@hit.edu.cn

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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/m2·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。

关键词: 高速铁路, 有砟轨道, 冒浆, 有限元模拟, 施工优化

Abstract:

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/m2·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.

Key words: high speed railway, ballast track, mud spillover, finite element simulation, construction optimization

中图分类号: 

  • U215.7

图1

模型验证二维土柱注浆示意图"

表1

模型参数值"

参数数值参数数值
初始孔隙率0.3泊松比0.25
初始渗透率/m21.75×10-11介质密度/（kg·m-3）1600
比奥系数1浆液初始密度/（kg·m-3）1370
弹性模量/MPa20浆液黏度/（Pa·s）0.017

图2

数值模拟与实验数值对比示意图"

图3

高铁有砟轨道路基三维有限元模型（单位： m）"

图4

有限元模型网格"

表2

渗流场参数"

参数数值
初始孔隙率0.3
初始渗透率（道砟）/m21×10-10
初始渗透率（基床及以下路堤）/m25×10-12
浆液黏度/（Pa·s）0.017
比奥系数1
浆液初始密度/（kg·m-3）1400

表3

结构场参数值"

土层弹性模量E/MPa泊松比v密度ρ/ （kg·m-3）
道砟2000.252100
基床表层1800.32000
基床底层1100.32000
基床以下路堤600.42000

图5

注浆压力0.2 MPa时顶面通量值分布图"

图6

不同注浆压力下顶面通量最大值线图"

图7

不同注浆深度下顶面通量最大值线图"

图8

不同注浆角度下顶面通量最大值线图"

图9

不同注浆管间距下顶面通量最大值线图"

表4

正交试验结果数据表"

序号ABCD最大通量值/（kg·m-2·s）
10.20.300.30.36
20.20.5-50.50.14
30.20.7-100.70.10
40.20.9-150.90.08
50.40.3-50.70.34
60.40.500.90.30
70.40.7-150.30.14
80.40.9-100.50.14
90.60.3-100.90.33
100.60.5-150.70.23
110.60.700.50.38
120.60.9-50.30.24
130.80.3-150.50.40
140.80.5-100.30.39
150.80.7-50.90.34
160.80.900.70.37
Ii0.671.441.421.13
Ⅱi0.931.061.061.06
Ⅲi1.190.960.971.05
Ⅳi1.150.830.851.06
Ii/40.170.360.350.28
Ⅱi/40.230.270.270.26
Ⅲi/40.300.240.240.26
Ⅳi/40.380.210.210.26
极差0.210.150.140.02

图10

不同注浆工艺下注浆压力影响范围示意图"

表5

渗流场参数"

参数数值参数数值
初始孔隙率0.3浆液黏度/（Pa·s）1.7367e0.444t
初始渗透率（道砟）/m21×10-10比奥系数1
初始渗透率（基床及以下路堤）/m25×10-12浆液初始密度/（kg·m-3）1400

图11

不同注浆工艺下顶面通量云图"

图12

上覆盖层与袖阀管联合注浆工艺下顶面通量云图"

图13

不同注浆方式下上表面通量最大值柱状图蓝色柱"

图14

不同注浆角度下三种典型盖层形式（单位： m）"

图15

不同上盖层形式下顶面最大通量线图"

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