CAJ | 학술논문

为研究中低速磁浮交通低置线路的动力特性，依托株洲车辆厂的试验线开展现场试验，目的是测试在列车荷载作用下基床动应力分布和轨道梁的动力响应。测试结果表明：当列车达到试验最高速度80 km/ h时，基床动应力约为静止荷载（无悬浮力）的1.1～1.2倍，最大值约为14 kPa。其随深度衰减较快，在1 m 深度时衰减值约为40％～50％。轨道梁梁端处动位移值较跨中大，最大值为0.066 mm。顶板竖向加速度、腹板横向加速度、腹板纵向加速度均能满足设计要求。3种轨道梁在整体刚度上有所差异，但在不同梁型连接过渡时，对行车没有明显的影响。
위연구중저속자부교통저치선로적동력특성，의탁주주차량엄적시험선개전현장시험，목적시측시재열차하재작용하기상동응력분포화궤도량적동력향응。측시결과표명：당열차체도시험최고속도80 km/ h시，기상동응력약위정지하재（무현부력）적1.1～1.2배，최대치약위14 kPa。기수심도쇠감교쾌，재1 m 심도시쇠감치약위40％～50％。궤도량량단처동위이치교과중대，최대치위0.066 mm。정판수향가속도、복판횡향가속도、복판종향가속도균능만족설계요구。3충궤도량재정체강도상유소차이，단재불동량형련접과도시，대행차몰유명현적영향。
In order to research the dynamic characteristics of low set line structure of medium and low speed maglev tran-sit,the field test was implemented relying on the experiment line of Zhuzhou Electric Locomotive Co. Ltd,to test the dynamic stress distribution of bedding and the dynamic response of the track-beam under the train load. Results of the trial indicate that:The maximum value of the dynamic stress in bedding is about 14 kPa which is about 1. 1 ~ 1. 2 times of the static loading(without suspension force)when the train reaches the maximum testing?speed of 80 km/ h,it atten-uates quickly with the depth and the attenuation value is about 40% ~ 50% when the depth is 1m. The dynamic dis-placement value at the end of the track-beam is bigger than that at the center and the maximum value is 0. 066 mm. The vertical acceleration of the top plate,lateral acceleration and longitudinal acceleration of the web plate can meet the re-quirements of design. Three types of track-beam are different in integral rigidity,but the connection transition of differ-ent beam types has no obvious effect to the train operation.