作　　者： (杨双双）; (王建平）; (赵志波）; (殷勤）;

机构地区： 解放军理工大学野战工程学院,南京210007

出　　处： 《兵器装备工程学报》 2017年第8期50-53,共4页

摘　　要： 针对装配式钢桁桥跨度逐渐增大引起的结构振动问题,应用调谐质量阻尼器(Tuned mass damper,TMD)进行振动控制。运用ANSYS软件建立了某型装配式钢桁桥的有限元模型,通过模态分析和谐响应分析确定了受控模态。根据Den Hartog理论对TMD的参数进行设计,分别对无控模型和有控模型进行瞬态动力分析,计算结果表明,在TMD控制下该桥的位移响应和加速度响应均得到了有效抑制。进一步研究发现随着质量比的增大,TMD的控制效果逐渐增强,但增强的幅度逐渐降低。 In order to solve the vibration problem of prefabricated steel truss bridge caused by the increase of span,the tuned mass damper（ TMD） is used to control the vibration in this paper. The finite element model of a prefabricated steel truss bridge is established with ANSYS. Modal analysis and harmonic response analysis are carried out to determine the controlled mode. According to the theory of Den Hartog,the parameters of TMD are designed. The transient dynamic analysis of the uncontrolled model and the controlled model are carried out. The results show that under the control of TMD,the displacement response and acceleration response of the bridge are effectively suppressed. Finally,the influence of mass ratio on the vibration reduction effect of TMD was further studied. It is found that with the increase of mass ratio,the control effect of TMD gradually increases,but the amplitude of the enhancement gradually decreases.

关 键 词： 装配式钢桁桥 有限元分析 调谐质量阻尼器 振动控制