作　　者： (张英）; (张露）; (王少华）; (曾刚）;

机构地区： 中铁山桥集团有限公司,河北秦皇岛066205

出　　处： 《铁道建筑》 2017年第9期34-38,共5页

摘　　要： 以中车青岛四方机车车辆股份有限公司的空轨试验线用单开自动道岔梁为例,应用ANSYS软件建立道岔梁的有限元模型,研究道岔梁的自振频率以及在车辆过直线和过曲线状态下道岔梁的强度和刚度。结果表明:道岔梁的一阶自振频率为8.11 Hz,符合中车青岛四方机车车辆股份有限公司企业标准《悬挂式空轨车辆试验线规划方案》的规定;道岔梁最大变形量为21.1 mm,符合《铁路桥涵设计基本规范》(TB 10002.1—2005)的规定;原设计的道岔梁带条形槽的横向加劲板存在严重的应力集中现象,最大集中应力为918.4 MPa,远大于材料容许应力;对道岔梁横向加劲板结构进行改进后,应力集中现象消除,道岔梁最大等效应力符合规范规定。 Taking the single open automatic turnout beam for suspended monorail system test line of CRRC Qingdao Sifang Vehicle Co.,Ltd.as an example,the finite element model of turnout beam was established by ANSYS software.The natural frequency of the turnout beam and the strength and rigidity of the turnout beam under the conditions of the vehicle crossing the straight line and crossing the curve line were studied respectively.The results show that the first-order natural frequency of the turnout beam is8.11Hz,conforming to enterprise standard of Suspended Monorail Vehicle Test Line Planning Scheme.The maximum deformation of the turnout beam is21.1mm,conforming to Fundamental Code for Design on Railway Bridge and Culvert(TB10002.1-2005).In the original design,the transverse stiffening plate with striped groove of turnout beam has serious stress concentration.The maximum concentrated stress is918.4M Pa,which is much greater than the allowable stress of the material.After improving the transverse stiffening plate structure,the stress concentration phenomenon is eliminated.The maximum equivalent stress of the turnout beam meets the specifications.

关 键 词： 空轨 道岔梁 有限元分析 安全性 模态分析 静力分析