[1]杨昱,万秋实,高芒芒,等.高速铁路大跨桥梁端轨道不平顺谱分析研究[J].高速铁路技术,2026,(01):1-10.[doi:10.12098/j.issn.1674-8247.2026.01.001]
　YANG Yu,WAN Qiushi,GAO Mangmang,et al.Spectral Analysis of Track Irregularities at Beam Ends of Long-span High-speed Railway Bridges[J].HIGH SPEED RAILWAY TECHNOLOGY,2026,(01):1-10.[doi:10.12098/j.issn.1674-8247.2026.01.001]
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高速铁路大跨桥梁端轨道不平顺谱分析研究()

《高速铁路技术》[ISSN:1674-8247/CN:51-1730/U]

卷:
期数:
2026年01期
页码:
1-10
栏目:
理论探索
出版日期:
2026-01-30

文章信息/Info

Title:
Spectral Analysis of Track Irregularities at Beam Ends of Long-span High-speed Railway Bridges
文章编号:
1674-8247(2026)01-0001-10
作者:
杨昱1; 2; 万秋实1; 2; 高芒芒3; 王平1; 2; 何庆1; 2
(1.西南交通大学高速铁路线路工程教育部重点实验室, 成都 610031; 2. 西南交通大学, 成都 610031; 3.中国铁道科学研究院集团有限公司, 北京 100081)
Author(s):
YANG Yu1; 2;  WAN Qiushi1; 2;  GAO Mangmang3;  WANG Ping1; 2;  HE Qing1; 2
(1.MOE Key Laboratory of High-speed Railway Engineering, Southwest Jiaotong University, Chengdu 610031, China; 2.Southwest Jiaotong University, Chengdu 610031, China; 3. China Academy of Railway Sciences Co., Ltd., Beijing 100081, China)
关键词:
高速铁路;  大跨度桥梁;  轨道不平顺;  梁端区域
Keywords:
high-speed railways;  long-span bridges;  track irregularities;  beam-end sections
分类号:
U212.31
DOI:
10.12098/j.issn.1674-8247.2026.01.001
文献标志码:
A
摘要:
为了揭示千米级大跨桥梁端区段轨道不平顺的谱特性,本文基于某高速铁路有砟轨道梁端区段的实测数据,开展了谱特性分析。首先,结合静检数据对动检数据进行里程校准,并采用3.5 σ准则与小波分析法剔除异常值与趋势项。随后,经算法对比,选取Burg自回归法计算梁端区段轨道不平顺的功率谱密度,确定其在梁端谱估计中的稳定性与优势。基于实测谱结果,提出5阶多项式拟合模型,并与七参数函数、中国干线铁路谱进行了对比分析。结果表明,梁端轨道不平顺在中短波长范围内表现出明显的谱特征差异,多项式拟合模型能够较好地表征梁端轨道不平顺的功率谱分布特征。本文研究可为千米级大跨桥梁端轨道不平顺谱构建及梁端区段轨道状态分析提供参考。
Abstract:
To investigate the spectral characteristics of track irregularities at the beam-ends of kilometer-scale long-span bridges, this study conducted a systematic spectral analysis based on measured data from the beam-end sections of a ballast track on a high-speed railway. First, the mileage of dynamic inspection data was calibrated using static inspection data, and abnormal values and trend components were identified and removed by combining the 3.5 σ criterion and wavelet-based analysis. Subsequently, through comparative analysis of different spectral estimation methods, the Burg autoregressive method was selected to estimate the power spectral density of track irregularities at the beam-ends, demonstrating its stability and applicability in beam-end spectral estimation. Based on the measured spectra, a fifth-order polynomial fitting model was proposed and compared with the seven-parameter function and the Chinese mainline railway track spectrum. The results indicate that track irregularities at the beam-ends exhibit distinct spectral characteristics in the medium- and short-wavelength ranges, and the proposed polynomial fitting model can effectively characterize the power spectral distribution of beam-end track irregularities. The findings of this study provide a reference for the construction of track irregularity spectra at the beam-ends of kilometer-scale long-span bridges and for the analysis of track conditions in beam-end sections.

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备注/Memo

备注/Memo:
收稿日期:2025-12-25
作者简介:杨昱(2001-),女,硕士研究生。
基金项目:科技部重点研发计划项目(2022YFB2602900)
更新日期/Last Update: 2026-01-30