CAJ | 학술논문

文章基于轮轨系统耦合动力学理论,结合我国城际客运专线的运营特点,建立了城际客运专线车辆-减振型双块式无砟轨道耦合动力学分析模型,分析了列车在速度为120~200km/h时的轮轨动力响应,得出以下结论:(1)同时兼顾减振效果、扣件(减振垫)的使用寿命,建议减振型双块式无砟轨道的钢轨允许垂向位移控制在2.6mm以内,钢轨的垂向变形均匀分配到扣件和减振垫上;(2)减振垫刚度是决定底座板加速度及道床板位移的决定性因素,其对钢轨动弯应力的影响也很显著;(3)计算结果表明,城际客运专线列车运行速度在120~200km/h时,减振型双块式无砟轨道减振垫的合理刚度应取为0.03N/mm3.
문장기우륜궤계통우합동역학이론,결합아국성제객운전선적운영특점,건립료성제객운전선차량-감진형쌍괴식무사궤도우합동역학분석모형,분석료열차재속도위120~200km/h시적륜궤동력향응,득출이하결론:(1)동시겸고감진효과、구건(감진점)적사용수명,건의감진형쌍괴식무사궤도적강궤윤허수향위이공제재2.6mm이내,강궤적수향변형균균분배도구건화감진점상;(2)감진점강도시결정저좌판가속도급도상판위이적결정성인소,기대강궤동만응력적영향야흔현저;(3)계산결과표명,성제객운전선열차운행속도재120~200km/h시,감진형쌍괴식무사궤도감진점적합리강도응취위0.03N/mm3.
Inordertoinvestigatetherationalityrigidityofvibration-absorbingdouble-blocktrackofintercityrailway, basedonverticalvehicle/trackdynamicsandtheactualsituationinChina,amodelforvehicle-vibration-absorbingdoub-le-blocktrackcouplingdynamicsisestablished,thisthesisanalysesthetrainsdynamicresponseat120~200km/h. Thecalculatingresultsareasfollows:(1)Considerationtodampingeffectandservicelifeoffastenings(dampingpad), thewritersuggestsinthispaperthatthemaximumverticaldisplacementsofrailshouldbecontrolledwithin2.6mm,the verticaldisplacementsofrailshouldbedistributedtofasteningsanddampingpaduniformly;(2)Therigidityofdamping padisthedecisivefactorofbaseslabsaccelerationsanddeckslabsdisplacements,andithasasignificanteffectonrail flexstress;(3)Therationalityrigidityofvibration-absorbingdouble-blocktrackis0.03N/mm3,whenintercitytrains speedis120~200km/h.