[1]郑 维,陈明浩,陈兴海.四川盆地某车站路基上拱原因分析及变形趋势预测[J].高速铁路技术,2025,(02):46-50,56.[doi:10.12098/j.issn.1674-8247.2025.02.007]
　ZHENG Wei CHEN Minghao CHEN Xinghai.Cause Analysis and Deformation Trend Prediction of Subgrade Upwarp of a Railway Station in Sichuan Basin[J].HIGH SPEED RAILWAY TECHNOLOGY,2025,(02):46-50,56.[doi:10.12098/j.issn.1674-8247.2025.02.007]
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四川盆地某车站路基上拱原因分析及变形趋势预测()
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《高速铁路技术》[ISSN:1674-8247/CN:51-1730/U]

卷:
期数:
2025年02期
页码:
46-50,56
栏目:
理论探索
出版日期:
2025-04-20

文章信息/Info

Title:
Cause Analysis and Deformation Trend Prediction of Subgrade Upwarp of a Railway Station in Sichuan Basin
文章编号:
1674-8247(2025)02-0046-05
作者:
郑 维;  陈明浩;  陈兴海
(中铁二院工程集团有限责任公司, 成都 610031)
Author(s):
ZHENG Wei CHEN Minghao CHEN Xinghai
(China Railway Eryuan Engineering Group Co.,Ltd.,Chengdu 610031,China)
关键词:
四川盆地;  无砟轨道;  路基上拱;  变形趋势预测
Keywords:
Sichuan Basin;  ballastless track;  subgrade upwarp;  deformation trend prediction
分类号:
U216.41; U213.1
DOI:
10.12098/j.issn.1674-8247.2025.02.007
文献标志码:
A
摘要:
四川盆地红层区高速铁路路基上拱变形已成为高速铁路建设面临的难题。以四川盆地某客运专线铁路车站上拱路基为研究对象,在既有研究成果的基础上,通过地质调绘、地质钻探、地应力测试、室内试验等方法,分析车站路基上拱的原因,并对典型变形段上拱变形趋势进行预测。结果表明,(1)车站路基持续上拱的内因为红层泥岩在低应力作用下的蠕变性,外因为场地内存在的水平构造应力;(2)预测车站典型变形段(K 53+073～K 53+293)持续变形至2041年趋于稳定,最终上拱变形量为41 mm,目前已累计上拱24.8 mm,剩余变形量约为16 mm。研究成果可为车站路基上拱病害整治工程设计提供依据。
Abstract:
The upwarp deformation of subgrade of high-speed railway in red layer area of Sichuan Basin has emerged as a challenge in high-speed railway construction. Taking the subgrade upwarp of a passenger dedicated railway station in Sichuan Basin as the research object, based on the existing research results, the causes of subgrade upwarp of the station were analyzed by means of geological mapping, geological drilling, in-situ stress test and indoor test. On this basis, the upwarptrend of typical deformation section was predicted. The results show that:(1)The internal cause of the continuous upwarping of the station subgrade is the creep of red mudstone under low stress, while the external cause is the horizontal tectonic stress in the site.(2)It is predicted that the typical deformation section(K 53+073～K 53+293)of the station will be stable until 2041, with a final upwarp deformation of 41 mm,the cumulative upwarp now is 24.8 mm, and the remaining deformation is about 16 mm. The research findings can provide a basis for the design of the upwarp disease treatment project of the station.

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备注/Memo

备注/Memo:
收稿日期:2024-06-12
作者简介:郑维(1989-),男,工程师。
基金项目:中国国家铁路集团有限公司重大课题(K2019G045)
更新日期/Last Update: 2025-04-20