CAJ | 학술논문

对于一种新型组合式道床试验系统的结构，进行了静动态试验，研究组合式道床系统在承受大载荷作用下，钢轨以及道床板结构受力变化规律，并将静态试验数据与理论计算结果相互对比。在负载状态下对该系统进行了动态锤击试验，验证安装谐振浮轨减振扣件及道床隔振垫组合道床系统的总体减振效果。静态力学特性数据表明：谐振浮轨扣件及道床隔振垫组合式系统理论计算与实际实验值基本一致；动态试验结果得到该组合道床系统在实验室等效轴载14 t～16 t条件下20 Hz～200 Hz频率范围，平均减振量可达到25 dB。
대우일충신형조합식도상시험계통적결구，진행료정동태시험，연구조합식도상계통재승수대재하작용하，강궤이급도상판결구수력변화규률，병장정태시험수거여이론계산결과상호대비。재부재상태하대해계통진행료동태추격시험，험증안장해진부궤감진구건급도상격진점조합도상계통적총체감진효과。정태역학특성수거표명：해진부궤구건급도상격진점조합식계통이론계산여실제실험치기본일치；동태시험결과득도해조합도상계통재실험실등효축재14 t～16 t조건하20 Hz～200 Hz빈솔범위，평균감진량가체도25 dB。
A new type of combined slab track system with good performance and low vibration is introduced and the method for vibration reduction evaluation of this system is presented. The new track system is optimized with resilient base plates on a floating slab panel using a continuous elastic mat. Dynamic excitation can be applied by using an exciter over the pre-loading. Track deflection and vibration can be measured at different positions to demonstrate the vibration performance with different track structures. Results obtained from this process are compared with those of simulation. This study describes the testing methods used to investigate static and dynamic behavior of the new system. The deflection of rails and slab components of the new type of the track system under heavy loads are studied. Results of the static test are compared with those of theoretical analysis and the results agree well. To investigate the vibration reduction performance, the dynamic hammering excitation tests are also carried out to the system under the loading conditions between 14 tones and 16 tones. Results of the tests show that the vibration level can be reduced by 25 dB in average in the frequency range from 20 Hz to 200 Hz.