CAJ | 학술논문

对京津城际铁路CRH3C型动车组车轮磨耗、车辆振动性能进行长期跟踪试验研究。研究发现部分动车组车轮镟修后车体横向失稳，而镟修后车轮外形等效锥度过小是车体失稳的主要原因。通过理论分析与试验研究，确定新的系列薄轮缘车轮形面设计原则为：提高轮轨等效锥度；统一轮缘高度；高次曲线连接轮缘根部与踏面外形。通过仿真计算、试镟修与线路运用考核薄轮缘车轮外形。仿真计算和线路测试结果表明：京津城际铁路CRH3C型动车组车轮采用该系列薄轮缘外形镟修后，轮轨等效锥度为0.17，动车组车体失稳现象消失，构架稳定性和运行平稳性均满足标准要求，直径镟修量控制在2 mm以内。
대경진성제철로CRH3C형동차조차륜마모、차량진동성능진행장기근종시험연구。연구발현부분동차조차륜선수후차체횡향실은，이선수후차륜외형등효추도과소시차체실은적주요원인。통과이론분석여시험연구，학정신적계렬박륜연차륜형면설계원칙위：제고륜궤등효추도；통일륜연고도；고차곡선련접륜연근부여답면외형。통과방진계산、시선수여선로운용고핵박륜연차륜외형。방진계산화선로측시결과표명：경진성제철로CRH3C형동차조차륜채용해계렬박륜연외형선수후，륜궤등효추도위0.17，동차조차체실은현상소실，구가은정성화운행평은성균만족표준요구，직경선수량공제재2 mm이내。
Long-term follow-up measurements were made to study the wheel tread wear and its influence to the running behavior of CRH3C EMUs operated on the Beijing-Tianjin Inter-city High-speed Railway Line .The re-sults showed that lateral car-body hunting unstability appeared after some wheels were profiled ,and the main reason was that the wheel tread profile conicity was too low . To solve such problems , the new series of thin flange wheel profiles were designed for CRH3C EMUs running on the Beijing-Tianjin Inter-city Railway Line . Three design principles were determined ,i.e. , to raise the equivalent wheel-rail profile conicity , to apply uni-form flange heights and to connect the flange root and tread contour by the high-order curve . T he new w heel profiles were tested and verified by dynamic simulation , trial profile and line operation . Simulation calculations and line measurements show that when the new series of thin flange wheel profiles are adopted with CRH 3C E-MUs running on the Beijing-Tianjin Inter-city Railway Line ,the equivalent wheel-rail conicity is 0.17 and the w heel diameter loss is controlled as less than 2 mm , the phenomena of carbody unstability disappear , and the CRH3C EM Us bogie stability and running stability satisfy the requirements specified in relevant standards .