【摘要】 总结了六种半主动控制算法,采用磁流变阻尼器,对一座大跨刚构-连续桥梁进行了半主动控制和主动控制地震反应分析,比较分析了半主动控制算法对地震反应控制效果的影响。结果表明,半主动控制和主动控制并不能使桥梁全部地震反应都能得到控制,而是使得桥梁部分地震反应减小,同时却放大另外部分地震反应;半主动最优bang-bang控制算法和最大开关控制算法的减震效果相对最好,且二者的控制效果非常接近;半主动界限滑动控制算法能够最好地跟踪主动控制的减震效果。更多还原

【Abstract】 Six semi-active algorithm are summarized.The semi-active control and active control analysis of seismic responses for a longspan rigid-continuous bridge is performed,and the influences of the semi-active algorithms on the control effect of the seismic response are compared.The results indicate that semi-active control and active control can not make all the seismic responses of the bridge less.They make its some seismic responses reduced,but make its some other seismic responses larger.The vibration-suppressing effect of NO.2 and NO.3 semi-active algorithm is the best,and the control effects of the two algorithm are very close to each other.The NO.6 semi-active algorithm can follow active control well for suppressing the seismic responses of the bridge,and can almost approach the vibration-suppressing effect of active control.更多还原