地震地磁观测与研究2025，Vol.46Issue(1)：177-186,10.DOI:10.3969/j.issn.1003-3246.2025.01.024
高速铁路大跨度连续梁桥线形控制对轨道静态平顺性影响分析
Analysis of the impact of high-speed railway large-span continuous girder bridge alignment control on track static regularity
任怀平1
作者信息
- 1. 中国辽宁 110000 中国铁路沈阳局集团有限公司
- 折叠
摘要
Abstract
ctor in ensuring track smoothness and operational safety.This study focuses on the alignment control and track smoothness optimization based on the final alignment of a(60+100+60)m continuous beam bridge along the Shenyang to Baihe Railway.An entire bridge simulation model was established using Midas/Civil to analyze alignment errors during different construction stages and to evaluate the applicability of various concrete creep and temperature gradient standards.By integrating the characteristics of the bridge alignment and the adjustment limits of ballast thickness,an optimization strategy for track alignment based on the bridge alignment was proposed.The results indicate that the maximum absolute error between the actual and theoretical alignment is 5.58 mm,demonstrating good agreement and meeting construction requirements.Among the standards,the CCCC 18 standard and the CHD 15 standard are more suitable for predicting concrete creep and temperature gradient effects,respectively,with the smallest mean square error of 2.54×10-5 between predicted and measured values.Furthermore,an optimization strategy for track alignment was proposed based on the actual final alignment,ensuring compliance with static track smoothness requirements.After optimization,the maximum short-wave irregularity of the track alignment is 1.61 mm/5 m,which satisfies the requirement.This research provides new insights and practical experience for alignment control during the construction of high-speed railway bridges.关键词
高速铁路连续梁桥/成桥线形/轨道平顺性Key words
high-speed railway continuous beam bridge/bridge alignment/track regularity引用本文复制引用
任怀平..高速铁路大跨度连续梁桥线形控制对轨道静态平顺性影响分析[J].地震地磁观测与研究,2025,46(1):177-186,10.
