CAJ | 학술논문

为研究磁浮车辆-悬浮控制-桥梁系统垂向耦合振动，基于相似原理建立磁浮车辆-悬浮控制-弹性桥梁垂向耦合动力学模型。结合磁浮车辆及桥梁参数，确定系统各参数的相似比例系数，最终通过系统仿真比较分析原型桥梁与比例桥梁的振动频率及车辆运行时桥梁的动态响应。研究结果表明：基于相似原理的原型桥梁与比例桥梁对车辆运行激扰的动态响应基本一致，两者的一阶振动频率工程意义上基本保持一致。由于比例桥梁的抗弯刚度相对于原型桥梁较小，故其跨中加速度较大约为原型桥梁的5倍。比例桥梁振动加速度最大值出现在车辆进出桥梁阶段。
위연구자부차량-현부공제-교량계통수향우합진동，기우상사원리건립자부차량-현부공제-탄성교량수향우합동역학모형。결합자부차량급교량삼수，학정계통각삼수적상사비례계수，최종통과계통방진비교분석원형교량여비례교량적진동빈솔급차량운행시교량적동태향응。연구결과표명：기우상사원리적원형교량여비례교량대차량운행격우적동태향응기본일치，량자적일계진동빈솔공정의의상기본보지일치。유우비례교량적항만강도상대우원형교량교소，고기과중가속도교대약위원형교량적5배。비례교량진동가속도최대치출현재차량진출교량계단。
Aiming at the study of vertical coupling vibration of maglev vehicle-suspension control-bridge,the maglev vehicle-suspension control-bridge vertical coupling dynamic model was established based on the simi-larity theory.The similar proportion coefficients with respect of the parameters in simulation systems were deter-mined through combining the existing maglev vehicle with bridge parameters.The comparative analysis of vibra-tion frequency and dynamic response between the experimental bridge and the real bridge was accomplished by system simulation.The results show that,based on the similarity theory,the first resonance frequencies are prac-tical same between the experimental bridge and the real bridge.The dynamic responses representing the vehicle runs are also consistent.Due to the weaker flexural rigidity of experimental bridge,the vibration acceleration at the midspan is about four times larger than that in the actual bridge.And the peek of the vibration acceleration occurs when vehicles ingress or egress the bridge.