新型高速道岔结构研发及列车过岔安全性分析  

Research and Development of New High Speed Turnout Structure and Safety Analysis While Train Passing Through Turnout

作　　者：张鹏飞[1] 杨奥闯 张庆欢 ZHANG Pengfei;YANG Aochuang;ZHANG Qinghuan(State Key Laboratory of Performance Monitoring Protecting of Rail Transit Infrastucture,East China Jiaotong University,Nanchang 330013,China;Suzhou Rail Transit Operation Co.Ltd.,Suzhou Jiangsu 215004,China)

机构地区：[1]华东交通大学轨道交通基础设施性能监测与保障国家重点实验室,南昌330013 [2]苏州轨道交通运营有限公司,江苏苏州215004

出　　处：《铁道建筑》2024年第1期34-39,共6页Railway Engineering

基　　金：国家自然科学基金(52178425,52368063);2022年江西省科技专项(国家科技奖后备培育项目)(20223AEI91004);江西省高层次高技能领军人才培养工程项目(1600223003)。

摘　　要：为了减小尖轨对列车高速运行安全性的影响,研发了一种新型高速道岔转辙器结构。新型转辙器去掉了既有结构中的尖轨,全部采用标准60 kg/m钢轨的轨头断面;转辙轨一端固定,另一端可左右转动,从而实现转向。基于车辆-道岔耦合动力学理论,分别建立标准18号道岔、新型道岔模型以及CRH_(2)型车的单车模型;通过与标准道岔对比,分析列车侧逆向通过新型道岔的安全性。结果表明:与标准道岔相比,列车侧逆向通过新型道岔时,在转辙器区域脱轨系数由0.49降为0.32,降低34.69%;轮轨横向力峰值由40.24 kN降为26.51 kN,降低34.12%;轮轨垂向力峰值由90.71 kN降到84.66 kN,降低6.67%。列车通过新型道岔时轮重减载率在跟端轨缝位置出现突变,在转辙器区域优于标准道岔。In order to reduce the impact of switch rails on the safety of high speed train operation,a new type of high speed turnout switch structure was developed.The new type of switch removes the pointed rails from the existing structure and adopted a standard 60 kg/m track rail head section.One end of the switch track is fixed,and the other end can rotate left and right to achieve turning.Based on the theory of vehicle-turnout coupling dynamics,the models for standard No.18 turnout,new turnout,and single vehicle models for CRH_(2) type vehicles were establish.By comparing with standard turnouts,the safety of new turnouts when trains pass in the opposite direction was analyzed.The results show that compared with the standard turnout,when the train passes through the new turnout in the opposite direction,the derailment coefficient in the turnout area decreases from 0.49 to 0.32,which is a decrease of 34.69%,the peak wheel-rail lateral force decreases from 40.24 kN to 26.51 kN,which is a decrease of 34.12%,and the peak wheel-rail vertical force decreases from 90.71 kN to 84.66 kN,which is a decrease of 6.67%.The wheel load reduction rate of the new turnout shows a sudden change in the position of rail gap at the heel,and the switch area is still better than the standard turnout.

关 键 词：高速铁路 道岔 动力学仿真 新型转辙器 安全性评价 跟端轨缝 

分 类 号：U213.61[交通运输工程—道路与铁道工程]