基于流固耦合理论的CRTSⅢ型无砟轨道SCC灌注参数影响规律研究

高亮; 孙洪斌; 张广海; 周会; 郑小明; 张红乾

doi:10.13238/j.issn.1004-2954.202409180006

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基于流固耦合理论的CRTSⅢ型无砟轨道SCC灌注参数影响规律研究

本刊特稿 | 更新时间：2025-06-23

- 基于流固耦合理论的CRTSⅢ型无砟轨道SCC灌注参数影响规律研究
- Research on the Influence of SCC Pouring Parameters of CRTSⅢ Ballastless Track Based on Fluid-Structure Coupling Theory
- 铁道标准设计 2025年69卷第6期页码：1-5
- 作者机构：
  
  1.北京交通大学土木建筑工程学院，北京　 100044
  2.山东铁路投资控股集团有限公司，济南　 250013
  3.中电建路桥集团有限公司，北京　 100160
  4.安徽兴宇轨道装备有限公司，安徽蚌埠　 233000
  5.中国水利水电第四工程局集团有限公司，西宁　 810007
  6.中铁上海工程局集团有限公司，上海　 201906
- 作者简介：
  
  高亮（1968—），男，教授，博士生导师，1997年毕业于西南交通大学土木工程学院，工学博士，主要从事无砟轨道智能施工理论与方法研究工作，E-mail：lgao@bjtu.edu.cn。
- 基金信息：
  
  山东省交通运输厅科技计划项目(2021B99)
- DOI：10.13238/j.issn.1004-2954.202409180006
  中图分类号： U213.2
- 收稿：2024-09-18，
  
  修回：2024-11-18，
  
  网络首发：2025-03-07，
  
  纸质出版：2025-06-20
- 稿件说明：
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高亮, 孙洪斌, 张广海, 等. 基于流固耦合理论的CRTSⅢ型无砟轨道SCC灌注参数影响规律研究[J]. 铁道标准设计, 2025,69(6):1-5.

GAO Liang, SUN Hongbin, ZHANG Guanghai, et al. Research on the Influence of SCC Pouring Parameters of CRTSⅢ Ballastless Track Based on Fluid-Structure Coupling Theory[J]. Railway Standard Design, 2025, 69(6): 1-5.
高亮, 孙洪斌, 张广海, 等. 基于流固耦合理论的CRTSⅢ型无砟轨道SCC灌注参数影响规律研究[J]. 铁道标准设计, 2025,69(6):1-5. DOI： 10.13238/j.issn.1004-2954.202409180006.

GAO Liang, SUN Hongbin, ZHANG Guanghai, et al. Research on the Influence of SCC Pouring Parameters of CRTSⅢ Ballastless Track Based on Fluid-Structure Coupling Theory[J]. Railway Standard Design, 2025, 69(6): 1-5. DOI： 10.13238/j.issn.1004-2954.202409180006.

摘要

CRTSⅢ型板式无砟轨道已成为我国新建高铁主要采用的轨道结构型式，自密实混凝土灌注施工作为关键施工环节，其施工质量直接影响轨道结构平顺性。为探究自密实混凝土流变参数对灌注施工质量和效率的影响机制，基于流固耦合理论建立自密实混凝土灌注全过程有限元分析模型，研究自密实混凝土灌注过程中轨道结构的力学特性及其受流变参数的影响规律。研究结果表明：自密实混凝土灌注过程中轨道板所受的上浮力和位移变化分为4个阶段；塑性黏度对自密实混凝土的灌注影响比屈服应力的影响更大；随着塑性黏度的增大，灌注时间、轨道板所受的上浮力、轨道板位移均呈现先减小再增大趋势；随着屈服强度的增大，灌注时间、轨道板所受的上浮力、轨道板位移均逐渐增大。为了控制灌注施工质量，自密实混凝土流变参数的最佳取值范围为：屈服应力为45～65 Pa，塑性黏度为90～120 Pa·s。研究成果可为自密实混凝土灌注施工材料和工艺优化提供理论支撑。

Abstract

The CRTS Ⅲ ballastless track has become the main type of track structure for newly built high-speed railways in China. As a critical process

the pouring construction of self-compacting concrete (SCC) directly affects the smoothness of track structure. To investigate the influencing mechanism of SCC rheological parameters on the quality and efficiency of pouring construction

a finite element analysis model of the complete SCC pouring process was established based on fluid-structure coupling theory. The mechanical properties of track structure during SCC pouring and their variation patterns affected by rheological parameters were studied. The results showed that the buoyancy force and displacement variation of track slab during SCC pouring could be divided into four stages. Plastic viscosity had greater influence on SCC than yield stress. As plastic viscosity increased

the pouring time

buoyancy force

and track slab displacement first decreased and then increased. As yield strength increased

the pouring time

buoyancy force

and track slab displacement increased gradually. To ensure the quality of pouring construction

the optimal ranges for SCC rheological parameters were: yield stress of 45 to 65 Pa and plastic viscosity of 90 to 120 Pa·s. The research findings can provide theoretical support for optimizing materials and processes in SCC pouring construction.

关键词

Keywords

references

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