地锚拉杆服役状态对铁路无缝线路稳定性的影响  

Influence of Ground Anchor Rod Service Status on the Stability of Railway Seamless Line

作　　者：赵隆隆 ZHAO Longlong(Hebei Construction Investment Transportation Investment Co.,Ltd,Shijiazhuang 050001,China)

机构地区：[1]河北建投交通投资有限责任公司,石家庄050001

出　　处：《交通工程》2024年第10期105-109,共5页Journal of Transportation Engineering

摘　　要：为解决在现场作业时工务人员不能准确判断地锚拉杆服役状态对无缝线路稳定性的影响,造成安全隐患问题,建立了无缝线路稳定性有限元分析模型,分析地锚拉杆不同服役状态对钢轨横向位移的影响。研究结果表明:在地锚拉杆间隔为6 m基础上,增加杆间布置间距会减弱轨道结构稳定性,尤其在大偏移角度下更为明显;布置间隔从20.4 m加密至6 m,失稳临界温升提高5.19%;地锚拉杆布置间距一定时,偏移角度增大会进一步降低稳定性,容许温升阈值将出现最大达35.28%的降幅。In the field operation,the public works personnel often can not accurately judge the influence of the ground anchor rod service status on the stability of seamless line,resulting in security risks.In order to solve this problem,the finite element analysis model of seamless line stability is established,and the influence of different service states of ground anchor rod on rail lateral displacement is analyzed.The results show that the stability of the track structure will be weakened by increasing the spacing between the rods when the spacing between the rods is 6 m,especially at the large deviation Angle.The placement interval is encrypted from 20.4 m to 6 m,and the critical temperature rise of instability is increased by 5.19%.When the spacing of the anchor rod is fixed,the stability will be further reduced with the increase of the deviation Angle,and the allowable temperature rise threshold will decrease by up to 35.28%.

关 键 词：无缝线路 地锚拉杆 稳定性 允许温升 有限元 

分 类 号：U216[交通运输工程—道路与铁道工程]