CAJ | 학술논문

重载铁路朝大轴重、高运量、高密度的方向发展，对轨道结构提出了更高的需求。轨道结构在列车荷载作用下的受力特性与轨道部件尺寸、材料参数等有关。在已有研究基础上，充分结合朔黄铁路现场实测数据，采用有限元方法建立重载铁路轨道结构仿真模型，计算分析了不同轴重及不同轨道参数下的重载铁路轨道结构的受力特性（包括钢轨、轨枕、道床、路基面的弯矩、应力、变形等）。研究结果表明：列车轴重对钢轨位移与应力影响最大；采用Ⅲ型轨枕、减小轨枕间距有利于减小轨道结构受力；道床弹性模量对钢轨位移影响较大，而道床厚度对受力特性影响较小。
중재철로조대축중、고운량、고밀도적방향발전，대궤도결구제출료경고적수구。궤도결구재열차하재작용하적수력특성여궤도부건척촌、재료삼수등유관。재이유연구기출상，충분결합삭황철로현장실측수거，채용유한원방법건립중재철로궤도결구방진모형，계산분석료불동축중급불동궤도삼수하적중재철로궤도결구적수력특성（포괄강궤、궤침、도상、로기면적만구、응력、변형등）。연구결과표명：열차축중대강궤위이여응력영향최대；채용Ⅲ형궤침、감소궤침간거유리우감소궤도결구수력；도상탄성모량대강궤위이영향교대，이도상후도대수력특성영향교소。
With the development of heavy axle load, high volume and high density for heavy haul railways, there are higher demands on track structure. The mechanical characteristics of track structure under train loads are relat?ed to track dimensions and material parameters. Combined with field data of Shuohuang Railway, this study uses fi?nite element analysis method to make modeling and simulation of heavy haul railway track structure. The mechani?cal characteristics(including moment, stress and displacement)of heavy haul railway track structure under diffi?dent axle loads and diffident track parameters are calculated and analyzed. Results show that axle load has a huge influence on the displacement and stress of rail, the use of III-type sleeper and smaller sleeper spacing can help reduce the stress of track structure and elastic modulus has great impact on displacement of rails while ballast bed thickness has little impact on mechanical characteristics.