横梁效应对车-桥耦合振动的影响研究
发布时间：2018-07-23 18:57
【摘要】：提出了由横梁效应引起的附加不平整度的简化计算模型,给出了考虑横梁效应的车-桥耦合振动问题求解方法,解决了模态综合法因采用截断模态无法反映桥梁结构如横梁、桥面板等局部构件振动情况的问题,并通过算例对横梁效应考虑与否进行了对比分析,同时引入描述横梁效应桥面系刚度变化幅度的无量纲参数γ,研究了其对考虑车-桥耦合振动的影响。研究结果表明:横梁效应与车-桥振动系统存在耦合关系,其效应值随参数γ增加而增加,呈高次变化规律。
[Abstract]:In this paper, a simplified calculation model of additional irregularity caused by beam effect is proposed, and a method to solve the vehicle-bridge coupling vibration problem considering the cross-beam effect is given. The method of modal synthesis can not reflect the bridge structure such as beam because of the truncated mode. The vibration of local members, such as deck slab, is analyzed and compared with an example of whether the cross beam effect is considered or not. At the same time, the dimensionless parameter 纬 is introduced to describe the stiffness variation amplitude of the bridge deck system under the crossbeam effect, and the effect of the parameter 纬 on the consideration of the vehicle-bridge coupling vibration is studied. The results show that there is a coupling relationship between the cross-beam effect and the vehicle-bridge vibration system, and the effect value increases with the increase of the parameter 纬.
【作者单位】： 林同h旯使こ套裳，
本文编号：2140347
[Abstract]:In this paper, a simplified calculation model of additional irregularity caused by beam effect is proposed, and a method to solve the vehicle-bridge coupling vibration problem considering the cross-beam effect is given. The method of modal synthesis can not reflect the bridge structure such as beam because of the truncated mode. The vibration of local members, such as deck slab, is analyzed and compared with an example of whether the cross beam effect is considered or not. At the same time, the dimensionless parameter 纬 is introduced to describe the stiffness variation amplitude of the bridge deck system under the crossbeam effect, and the effect of the parameter 纬 on the consideration of the vehicle-bridge coupling vibration is studied. The results show that there is a coupling relationship between the cross-beam effect and the vehicle-bridge vibration system, and the effect value increases with the increase of the parameter 纬.
【作者单位】： 林同h旯使こ套裳，
本文编号：2140347
本文链接：https://www.wllwen.com/kejilunwen/daoluqiaoliang/2140347.html
