大跨度桥梁中液压阻尼器的减震研究

为了分析研究液压阻尼器对大跨度桥梁地震效应的控制作用,以一座斜拉桥为例,在相同的地震波作用下,对三种不同的塔梁连接形式分别进行时程分析,比较了三种连接形式下桥梁跨中及桥塔的纵向位移、主梁及桥塔的受力情况,指出液压阻尼器能够改善大跨度桥梁的动力特性。

Study on the seismic response reduction of fluid Viscous damper in long-span bridge

This thesis based on an example of cable-stayed to analyze the effects of the fluid viscous damper in seismic response of long-span bridge.Under the same seismic excitation,time-history analysis is used to the elastic juncture between pylon and deck,the horizontal displacement restriction,and the horizontal displacement of the middle of deck and pylon and the stress of the bridge tower of three systems are compared.The researches show that the fluid viscous damper can mend the dynamical characteristic of long-span bridge system,by this it can not only minimize both the displacement and stress of thissystem.