摘要
为了更好地评估铁路钢轨焊缝平直度,本文提出一种平直尺+塞尺组合测量的数值模拟方法。首先采用移动式平直度测量仪测量线路多个钢轨焊缝附近5 m范围内的几何不平顺波形并计算焊缝真实幅值,然后利用本文提出的数值模拟方法,模拟1 m平直尺以重力自平衡状态放置在焊缝处的姿态特征,并计算塞尺可以塞入的最大幅值;最后将模拟结果与现场1 m平直尺+塞尺组合测量结果进行对比,检测1 m平直尺+塞尺组合方式对不同形式焊缝的平直度测量效果。结果表明:本文提出的平直尺+塞尺组合测量的数值模拟方法与现场1 m平直尺+塞尺组合测量结果基本一致,相差不超过0.05 mm;1 m平直尺+塞尺组合测量能够反映出对称焊缝和低接头焊缝平直度的真实状态,但是难以评估非对称焊缝的真实几何幅值。
In order to better evaluate the flatness of railway rail welded seam,a numerical simulation method combining a straightedge+a feeler measurement was proposed.Firstly,a mobile flatness measuring instrument was used to measure the geometric irregularity waveforms within a 5 m range near multiple rail welded seams on the line and calculate the true amplitude of the welded seam.Then,using the numerical simulation method proposed in this paper,the posture characteristics of a 1 m straightedge placed in a gravity self balancing state at the welding was simulated,and the maximum amplitude that the feeler can be inserted was calculated.Finally,the simulation results were compared with the on-site measurement results of a combination of a 1 m straightedge+a feeler,and the measurement effect of the combination of a 1 m straightedge+a feeler on the flatness of different forms of welded seam was tested.The results show that the numerical simulation method proposed in this article for the combination measurement of a straightedge+a feeler is basically consistent with the on-site measurement results of a 1 m straightedge+a feeler,which has a difference of no more than 0.05 mm.The combination measurement of a 1 m straightedge+a feeler can reflect the true state of the flatness of symmetrical and low joint welded seams,but it is difficult to evaluate the true geometric amplitude of asymmetric welded seam.
作者
高天赐
梁永超
王刘翀
史一帆
王源
刘晓舟
罗钦
王平
GAO Tianci;LIANG Yongchao;WANG Liuchong;SHI Yifan;WANG Yuan;LIU Xiaozhou;LUO Qin;WANG Ping(College of Urban Transportation and Logistics,Shenzhen Technology University,Shenzhen Guangdong 518118,China;Shenzhen Metro Operation Group Co.Ltd,Shenzhen Guangdong 518031,China;Zhejiang Rail Transit Operation Management Group Co.Ltd.,Hangzhou 310005,China;MOE Key Laboratory of High-speed Railway Engineering,Southwest Jiaotong University,Chengdu 610031,China;Shenzhen Eborail Technology Co.Ltd.,Shenzhen Guangdong 518052,China)
出处
《铁道建筑》
2026年第1期37-43,共7页
Railway Engineering
基金
国家自然科学基金(52208441)
广东省普通高校创新团队(2022KCXTD027)。
关键词
钢轨焊缝
平直度检测
数值模拟
焊缝平直度评估
焊缝几何不平顺
rail welded seam
flatness detection
numerical simulation
assessment of welded seam flatness
geometric irregularity of welded seam
