【摘要】 为了研究调谐质量阻尼器(TMD)对大跨度拱桥地震响应的控制效果,以某拱桥为例,基于MIDAS/Civil有限元软件建立设置TMD的结构有限元模型,研究了TMD系统的最优参数的取值,并对比分析了设置所求参数的TMD前后该拱桥拱圈顶部横桥向在安评地震波作用下的位移反应,结果表明该TMD系统的减振率到达了25.5%,控制效果十分明显。更多还原

【Abstract】 In order to verify the effect of tuned mass dampers(TMD) on seismic response of long-span arch bridge,a long span arch bridge was taken as an example.and the FEA(Finite Element Analysis) model of the bridge was established by considering the effect of TMD by MIDAS /Civil.The optimal parameter values study on the TMD was carried out.The performance of TMD on seismic control was analyzed based on the comparison of the lateral displacements of the arch bridge top under earthquake wave of safety assessment between the original sttucture and the TMD-installed structure.The results showed that,after the TMD system was installed,the damping ratio of the arch bridge could reach up to 25.5%,the system has high control effect.更多还原