长联大跨部分斜拉桥上无砟轨道平顺性分析<sup>*</sup>

摘要
图/表
参考文献
相关文章 (15)

全文: PDF (1428 KB) HTML (1 KB)
输出: BibTeX | EndNote (RIS)

摘要 研究目的: 为探究长联大跨部分斜拉桥平顺性影响因素,以长青黄河特大桥为对象,考虑列车荷载、主梁主塔整体升温、斜拉索升温和主梁垂向温度梯度外部荷载因素,建立非线性静力学仿真模型,分析这些因素对大跨连续梁上无砟轨道的影响,并基于60 m弦测法,分析这些影响因素组合时对轨道高低不平顺幅值的影响。
研究结论: (1)桥塔升温和斜拉索降温会降低列车荷载作用下轨道不平顺幅值;(2)日照温差(沿梁高方向)、塔梁日温差与梁索温差对轨道高低不平顺的影响系数分别为0.34 mm/℃、0.18 mm/℃、0.13 mm/℃;(3)拟合了包含列车荷载、主梁主塔整体升温、斜拉索升温和主梁垂向温度梯度多工况控制作用下的轨道高低不平顺幅值计算公式;(4)本研究结论可为超长长联大跨部分斜拉桥上铺设无砟轨道平顺性研究提供参考。

	服务

	把本文推荐给朋友
	加入我的书架
	加入引用管理器
	E-mail Alert
	RSS
	作者相关文章
	贾东荣

关键词 ：高速铁路, 连续梁, 斜拉桥, 无砟轨道, 平顺性

Abstract：Research purposes: In order to investigate the influence factors on the smoothness of long and large-span partial cable-stayed bridges, the Changqing Yellow River Super-large Bridge is used as the object, and the external load factors of train load, overall warming of the main girder main tower, warming of the stayed cable and vertical temperature gradient of the main girder are considered, and a nonlinear static simulation model is established to analyze the influence of these factors on the ballastless track on large-span continuous girders, and based on the 60 m string measurement method, the influence of the combination of these factors on the amplitude of track unsmoothness is analyzed.
Research conclusions: (1)Tower warming and cable cooling will reduce the amplitude of track unsmoothness under train load. (2) The coefficients of daylight temperature difference (along the girder height direction), tower and girder daily temperature difference and girder and cable temperature difference on track unsmoothness are 0.34 mm/℃, 0.18 mm/℃ and 0.13 mm/℃, respectively. (3) The formulae for the calculation of track unsmoothness amplitude under the effect of multiple working conditions including train load, main girder tower warming, stayed cable warming and main girder vertical temperature gradient are fitted. (4) The research results can provide reference for the research on the smoothness of ballastless track laid on super-long and long-span partial cable-stayed bridge.

Key words： high-speed railway continuous girder cable-stayed bridge ballastless track smoothness

收稿日期: 2022-10-19

PACS:

U213

作者简介: **贾东荣,1982年出生,男,高级工程师,现任中铁上海工程局集团第七工程有限公司党委书记、执行董事。

引用本文:

贾东荣. 长联大跨部分斜拉桥上无砟轨道平顺性分析^*[J]. 铁道工程学报, 2023, 40(3): 20-26.
JIA Dongrong. Analysis of Smoothness of Ballastless Track on Long-span Partial Cable-stayed Bridge. Journal of Railway Engineering Society, 2023, 40(3): 20-26.

链接本文:

https://tdgcxb.crec.cn/CN/ 或 https://tdgcxb.crec.cn/CN/Y2023/V40/I3/20

[1]	杨荣山.高速铁路无砟轨道伤损分析与修复技术[M].北京:中国铁道出版社,2017.Yang Rongshan. Damage Analysis and Repair Technology of High-Speed Railway Ballastless Track [M] . Beijing:China Railway Publishing House, 2017.
[2]	翟婉明, 赵春发. 现代轨道交通工程科技前沿与挑战[J]. 西南交通大学学报, 2016(2):209-226.Zhai Wanming, Zhao Chunfa. Frontiers and Challenges of Sciences and Technologies in Modern Railway Engineering[J]. Journal of Southwest Jiaotong University, 2016(2):209-226.
[3]	郑健. 中国高速铁路桥梁[M]. 北京:高等教育出版社, 2008.Zheng Jian. China High-speed Railway Bridge [M] . Beijing:Higher Education Press, 2008.
[4]	朱志辉,闫铭铭,李晓光,等.大跨度斜拉桥-无砟轨道结构变形适应性研究[J].中国铁道科学,2019(2):16-24.Zhu Zhihui, Yan Mingming, Li Xiaoguang, etc. Deformation Adaptability of Long-Span Cable-Stayed Bridge and Ballastless Track Structure [J] . China Railway Science, 2019(2):16-24.
[5]	刘超,魏周春,张岷,等.高速铁路300m以上跨度桥梁线形评价标准研究[J].铁道标准设计,2021(9):62-67.Liu Chao, Wei Zhouchun, Zhang Min, etc. Research on the Evaluation Standard of the Profile of High Speed Railway Bridges of Over 300 m Span[J] . Railway Standard Design, 2021(9):62-67.
[6]	魏贤奎,禹壮壮,刘淦中,等.大跨度斜拉桥轨道的几何形位评估分析[J].铁道建筑,2021(5):109-114.Wei Xiankui, Yu Zhuangzhuang, Liu Ganzhong, etc. Evaluation and Analysis of Track Geometry of Long Span Cable-stayed Bridge[J] . Railway Engineering, 2021(5):109-114.
[7]	李秋义,张晓江,韦合导.商合杭高铁裕溪河特大桥铺设无砟轨道关键技术研究[J].中国铁路,2020(6):44-51.Li Qiuyi, Zhang Xiaojiang, Wei Hedao. Research on the Key Technology of Laying Ballastless Track on Yuxi River Super Long Bridge of Shangqiu-Hefei-Hangzhou High Speed Railway[J] . China Railway, 2020(6):44-51.
[8]	F Poisson, F Margiocchi. The Use of Dynamic Dampers on the Rail to Reduce the Noise of Steel Railway Bridges[J]. Journal of Sound and Vibration, 2006(3-5):944-952.