现代城市轨道交通
現代城市軌道交通
현대성시궤도교통
MODERN URBAN TRANSIT
2013年
4期
44-47,51
,共5页
无砟轨道%扣件%钢轨振动%有限元分析
無砟軌道%釦件%鋼軌振動%有限元分析
무사궤도%구건%강궤진동%유한원분석
non-ballasted track%fasteners%rail vibration%ifnite element analysis
#建立一般弹性扣件、粘结板式弹性扣件和轨道减振器扣件下的轨道模型，用有限元法模拟分析列车移动荷载作用下，不同扣件刚度、不同行车速度时钢轨的振动和荷载的传递情况。计算结果表明，随着行车速度提高，钢轨振动加剧，扣件支反力增大；随着扣件刚度减小，钢轨振动增加，扣件支反力减小，冲击荷载传递减小。
#建立一般彈性釦件、粘結闆式彈性釦件和軌道減振器釦件下的軌道模型，用有限元法模擬分析列車移動荷載作用下，不同釦件剛度、不同行車速度時鋼軌的振動和荷載的傳遞情況。計算結果錶明，隨著行車速度提高，鋼軌振動加劇，釦件支反力增大；隨著釦件剛度減小，鋼軌振動增加，釦件支反力減小，遲擊荷載傳遞減小。
#건립일반탄성구건、점결판식탄성구건화궤도감진기구건하적궤도모형，용유한원법모의분석열차이동하재작용하，불동구건강도、불동행차속도시강궤적진동화하재적전체정황。계산결과표명，수착행차속도제고，강궤진동가극，구건지반력증대；수착구건강도감소，강궤진동증가，구건지반력감소，충격하재전체감소。
Establishing a track model under conditions of track with common elastic fasteners, bond plate type fasteners and rail damper plate, using ifnite element method, rail vibration and loads transfer at different train running speeds and different fastener stiffness under dynamics of train moving loads are simulated and analyzed. The result shows that with increase of train speed, rail vibration is intensified, fastener support reaction force increases. With fastener stiffness decreases, rail vibration increases, fastener support reaction force decreases, and the impact of load transfer is reduced.
