中文摘要：

东北二环东西主线南幅桥主桥的桥址所在地的地震基本烈度为8度、设计基本地震加速度值为0.20g。为了解决其抗震问题,采用了粘滞流体阻尼器的减震技术。本文通过商用有限元软件Ansys对其进行有限元动力分析,对桥梁在减震状态下的地震反应进行了反应谱分析和时程分析,通过对减震桥梁与非减震桥梁的减震效果进行对比,从理论上验证了采用粘滞流体阻尼器后,有效地降低了结构的地震力,提高了桥梁的安全性,使其在大震作用下基本处于弹性状态。

英文摘要：

The basic seismic intensity of the east-north urban Bridge site is 8 degrees,a nd the basic design earthquake acceleration is 0.20g.In order to address th e seismic issues,the vibration energy dissipation technology of viscous fluid d ampers is used.In this study,the finite element dynamic analysis of the seismi c response is conducted depends on the commercial finite element software of ANS YS,the seismic bridge do earthquake response spectrum analysis and time histor y analysis.By comparing the results of the analysis,theoretically verified tha t the fluid viscous damper effectively reduces the seismic forces and improve th e safety of the bridge.The bridge can be elastic state under strong earthquakes.