摘要
为了分析加入磁流变阻尼器(MRD)框架结构的多维减震性能和扭转振动特性,基于杆系模型建立了MRD受控框架结构的空间杆系计算模型。以十层钢筋混凝土(RC)框架结构为例,采用Matlab软件开发了无控和MRD受控RC框架结构的空间杆系计算模型程序,在地震荷载作用下分别进行了动力时程分析,对未控和有控下框架典型节点X、Y、Z向的位移、加速度时程响应和结构的空间扭转振动响应进行了对比。结果表明,MRD可有效减小RC框架结构的多维位移和加速度时程响应,若阻尼器位置设置不当,将会增大结构的扭转振动响应。结果验证了MRD受控框架结构的空间杆系计算模型及其Matlab程序的正确性和有效性。
In order to analyze the multi-dimensional earthquake mitigation performance and the torsional vibration characteristics of a frame structure with Magnetorheological Damper （MRD） , the spatial beam element calculation model of MRD controlled frame structure was established based on the beam elements model. Taking a ten-story Reinforced Concrete （ RC ） frame structure as an example, the spatial beam element calculation model programs of the RC frame structure with and without MRD were developed by Matlab software. The dynamic time history analysis was carried out under the earthquake load. The displacement, acceleration response of typical nodes in X , F, Z direction and the spatial torsional vibration response of structure was compared under an uncontrolled and controlled frame. The results show that： MRD can effectively reduce the displacement and acceleration time history response of the RC frame structure. If the damper position is not set properly, the torsional vibration response of the structure will be increased. The results verify the validity of the spatial beam element calculation models and the Matlab program of the MRD controlled frame structure.
出处
《振动与冲击》
EI
CSCD
北大核心
2017年第16期176-181,206,共7页
Journal of Vibration and Shock
基金
国家自然科学基金(51408555)
河南省高校科技创新团队(15IRTSTHN026)
河南省高等学校重点科研项目(16A560011)
郑州市科技攻关项目(153PKIGG096)
关键词
磁流变阻尼器
杆系模型
空间结构
多维减震
动力分析
扭转振动
magnetorheological damper
beam element model
spatial structure
multi-dimensional earthquake mitigation
dynamic analysis
torsional vibration
