【摘要】 总结了6种半主动控制算法,采用黏滞阻尼器,对一座三跨简支梁桥进行了不同地震动输入下的半主动控制地震反应计算分析,比较分析了不同地震动输入和半主动控制算法对简支梁桥地震反应控制效果的影响。结果表明,半主动控制能有效地减小桥梁结构的大部分地震反应,同时可能会放大另外部分地震反应,这与地震动输入密切相关,不同地震动输入下的控制效果各不相同。所提六种半主动控制算法中,算法2、5、6对该简支梁桥地震反应的减震效果相对最好,这与各种算法的阻尼器耗能大小有关。更多还原

【Abstract】 Six semi-active control algorithms are summarized.The semi-active control analysis of seismic responses for a three-span simply supported beam bridge is performed with viscous dampers under different ground motion inputs.Influences of different ground motion inputs and semi-active control algorithms on control effect of seismic response are compared for simply supported beam bridge.The results indicate that the semi-active control can make most seismic responses of the bridge less,but can perhaps make some other seismic responses larger.This is due to the ground motion input,and the control effectiveness is different under different ground motion inputs.In the six semi-active control algorithms presented,vibration suppressing effectiveness of No.2,No.5 and No.6 control algorithms is the best,which is due to the energy consuming of each control algorithm.更多还原