摘要
用橡胶材料制成的粘弹性隔震器 (阻尼器 )作为结构抗震的被动控制 ,其控制器的行为用 Kelvin- Voigt-type模型来模拟 ;根据最优二次控制律 ,采用液压伺服作动器作为结构抗震的主动控制 ;同时使用上述两种控制系统构成杂交控制。对一个大跨度铁路高墩连续梁桥研究并评估了上述三种控制系统的减震效果。计算表明 。
A viscoelastic type connection isolator (damper), made of elastomeric material, is presented in this paper as passive aseismic protection system, and a Kelvin Voigt type model was adopted to simulate the behavior of the connection. Based on the quadric optimal control rules, a control system using the hydraulic servo actuator is also proposed as the active aseismic protection system. Combinations of the above two systems, known as the hybrid control system, have also been investigated to some extent. The effectiveness of the above three control systems is evaluated. A numerical example is illustrated for a long span continuous girder bridge with high bridge piers. It is shown that the reduction performance of the hybrid control system presented herein is more remarkable than that of the active control system or the passive control system alone.
出处
《铁道学报》
EI
CSCD
北大核心
2000年第5期81-84,共4页
Journal of the China Railway Society
基金
国家自然科学基金资助项目! ( 596780 2 7)
