大跨度连续梁桥减、隔震设计与分析

Design and Analysis on Seismic Isolation & Reduction for Large Span Continuous Beam Bridges

以两港公路大治河桥为例,针对大跨度连续梁桥结构的特点,在对E型阻尼器滞回耗能性能研究的基础上,采用E型阻尼器进行大跨度连续梁桥的减、隔震设计,并应用非线性时程方法研究了E型阻尼器的减震效果。结果表明:E型阻尼器构造简单,能有效减小大跨度连续梁桥的地震反应。

With the background of Lianggang Highway Dazhi River Bridge, aiming at the characteristics of large-span continuous beam bridge structure, E-type steel damper is adopted in the seismic isolation & reduction design at the basis of its hysteretic energy dissipation performance research. And moreover, the nonlinear time-history response method is used in studying the seismic reduction effect of E-type steel damper. The results show that being of simple structure, E-type steel damper can effectively reduce the seismic response of the large-span continuous beam bridge.