摘要
本文针对目前国内外关于流体阻尼器的研究现状,对输出力与运动速度不同关系的阻尼器的结构控制效果进行了理论分析和计算对比。分析中对于罕遇地震采用结构损伤为分析依据,对于多遇地震作用下则以层间最大剪力为依据。分析计算表明,流体阻尼器在罕遇下和多遇地震下均能大幅削减结构的地震反应,且流体阻尼器的输出力与速度次数的关系对阻尼器的控制效果有很大的影响,次数越小的阻尼器的滞回耗能效果越好,并且更能适应结构层间相对运动速度的变化,在实际控制设计中也更为方便。
Based on the assessment of various liquid dampers, a theoretical analysis and numerical comparison on the dampers is presented in the paper. Each liquid damper is characterized by its distinct relationship between output force and movement velocity. The analysis is performed based on structural damage for rare earthquakes and maximum interlayer shear force for frequent earthquakes. The results indicate that liquid dampers reduce structural seismic response greatly during earthquake, and a dampers control effect is strongly dependent upon the relationship between the output force of damper and the exponent of speed. The smaller the exponent, the better the dissipation effect of energy. In addition, dampers with smaller speed exponent adapt to the change of interlayer relative motion velocity and are more advantageous for actual control design.
出处
《工程力学》
EI
CSCD
北大核心
2002年第6期159-165,共7页
Engineering Mechanics
基金
国家自然科学基金(59978009)
教育部跨世纪人才基金资助
