CAJ | 학술논문

对于土质路基上无砟轨道的研究我国尚处于理论研究与分析试验阶段，而CRTS1型无砟轨道在土质路基上的应用相对板式轨道又显滞后，因此对土质路基上 CRTS1型无砟轨道的受力分析与参数研究具有很重要的现实意义。本文基于通用有限元软件 ANSYS，建立 CRTS1型板式无砟轨道结构计算模型，计算轨道扣件刚度取值不同时，轨道结构各参数的动力响应。以此来确定高速铁路 CRTSⅠ型板式无砟轨道结构扣件刚度的取值。结果表明：随着扣件刚度的增大，钢轨的垂向位移逐渐减小，道床板和支承层垂向位移变化不大，道床板纵横向弯矩均增大。扣件刚度从60kN／mm 逐渐递增时，轨道结构的位移与加速度变化均趋于平缓；扣件的弹性模量取值建议在60 kN／mm左右选取。这对高速铁路轨道结构优化设计提供了计算依据。
대우토질로기상무사궤도적연구아국상처우이론연구여분석시험계단，이CRTS1형무사궤도재토질로기상적응용상대판식궤도우현체후，인차대토질로기상 CRTS1형무사궤도적수력분석여삼수연구구유흔중요적현실의의。본문기우통용유한원연건 ANSYS，건립 CRTS1형판식무사궤도결구계산모형，계산궤도구건강도취치불동시，궤도결구각삼수적동력향응。이차래학정고속철로 CRTSⅠ형판식무사궤도결구구건강도적취치。결과표명：수착구건강도적증대，강궤적수향위이축점감소，도상판화지승층수향위이변화불대，도상판종횡향만구균증대。구건강도종60kN／mm 축점체증시，궤도결구적위이여가속도변화균추우평완；구건적탄성모량취치건의재60 kN／mm좌우선취。저대고속철로궤도결구우화설계제공료계산의거。
Studies on soil sub-grade for ballasted track is in China are still in the theoretical research and the experimental analysis stage .Compared with the slab track , CRTS1 ballasted track is much less ap-plied to the soil sub-grade.So the force analysis and parameters research of CRTS 1 ballasted track on soil roadbed has great significance .This study builds the CRTS 1 slab track structure model through ANSYS—a general-purpose finite element software —and calculates the dynamic responses of each parameter of the track structure when the different values of the rail fastener stiffness are given so as to determine the high-speed railway CRTS1 Slab Track Structure fastener stiffness values .The results show that when the fastener stiffness increases ,the vertical displacement of the rail decreases ,the road bed board and the sup-porting layer vertical displacement changes little ,and both the vertical and horizontal mattress moment in-creases.Stiffness gradually increases from 60kN/mm,the displacement and the acceleration changes are leveling off track structure .Elastic modulus values suggest fasteners are set at about 60kN/mm.Optimal design of high-speed railway track structure provides a basis for the calculation .