桥墩—梁体系横向半主动变阻尼控制研究  

Study on semi-active control for transverse vibration of bridge pier-beam system with variable damper

作　　者：王博[1] 韩星星[1] 徐建国[1] 陈淮[2] 

机构地区：[1]郑州大学环境与水利学院水工抗震研究所,河南郑州450002 [2]郑州大学土木工程学院,河南郑州450002

出　　处：《世界地震工程》2009年第2期88-93,共6页World Earthquake Engineering

基　　金：河南省高校杰出科研人才创新工程基金项目(2003KYCX011);河南省自然科学基金项目(2004570002)

摘　　要：针对桥梁横桥向抗震条件相对较差的情况,提出利用变阻尼控制装置对典型桥梁结构横向振动进行控制的方法,探讨其基于LQR算法的半主动控制效果。将被控结构作为多自由度体系,建立了结构—变阻尼系统力学模型和运动微分方程,进而结合实例利用Matlab软件仿真分析了各种半主动控制算法和被动控制策略的控制效果。研究结果表明:采用半主动变阻尼控制装置有效的降低了桥梁结构横向地震反应,控制效果明显。In this paper, the method of semi-active control with variable damper is presented to deal with the rela- tively poor transversal seismic condition of a bridge. Based on the LQR control algorithm, the control effectiveness for transverse vibration of the bridge is discussed. Taking the structure as a multiple-degree of freedom system, the calculating model of the structure-variable damper system is set up and its differential equation is derived. Combined with practical example, the control system is simulated and studied by various semi-active control algorithms and passive strategy with MATLAB. The results show that the semi-active control with variable damper can decrease the transverse vibration of the bridge effectively, and the control effect is obvious.

关 键 词：桥墩-梁体系 振动控制 横向振动 变阻尼控制 半主动控制算法 LQR算法 

分 类 号：U441.3[建筑科学—桥梁与隧道工程]