市域快轨无砟轨道18号无缝道岔设计参数研究  

Research on Design Parameters of No.18 Ballastless Jointless Switch in Urban Rapid Rail Transit

作　　者：孙大新 曲村 刘铁旭 SUN Daxin;QU Cun;LIU Tiexu(Beijing Urban Construction Design&Development Group Co.,Ltd.,Beijing 100037,China;Beijing Engineering Research Center of Track Structure,Beijing 100037,China;National Engineering Research Center of Green&Safe Construction Technology in Urban Rail Transit,Beijing 100037,China)

机构地区：[1]北京城建设计发展集团股份有限公司,北京100037 [2]北京市轨道结构工程技术研究中心,北京100037 [3]城市轨道交通绿色与安全建造技术国家工程研究中心,北京100037

出　　处：《现代交通技术》2022年第2期82-86,共5页Modern Transportation Technology

摘　　要：跨区间无缝线路是与市域快轨相适应的轨道结构,是我国铁路建设必须采用的关键技术。道岔基本轨的焊接接头位置和道岔区扣件阻力参数的选择直接影响到市域快轨无缝道岔的铺设质量。建立市域快轨无砟轨道18号无缝道岔有限元仿真模型,对选取不同的道岔基本轨焊接接头位置及扣件阻力参数条件下的主要计算结果进行计算分析。结果表明:目前设计方案中采用的基本轨焊接位置与尖轨跟端位置相同基本为最合理位置;在条件允许时,增大里轨扣件阻力,有利于控制无缝道岔的受力与变形。Trans-sectional jointless track is the track structure adapted to urban rapid rail transit,and the key technology for railway construction in China.The laying quality of jointless switch in urban rapid rail transit would be affected directly by the welding joint position of jointless switch stock rail and fastener resistance.Finite element simulation model of No.18 ballastless jointless switch in urban rapid rail transit is established to calculate and analyze the main calculation results under different welding joint positions and fastener resistances of jointless switch.Analysis result shows that the welding joint position of stock rail similar to rear end of switch rail in the present design scheme is optimum position;if conditions permit,fastener resistance would be increased to control the force and deformation of jointless switch.

关 键 词：市域快轨 无砟轨道 18号无缝道岔 焊缝位置 扣件阻力 

分 类 号：U213.6[交通运输工程—道路与铁道工程] U213.91