悬臂张弦立体桁架的减震控制研究  

Vibration Control in Cantilever Spatial Truss String Structure

作　　者：薛晓峰[1] 吴彦霖[1] 李晓飞[1] 李慧[2] 

机构地区：[1]甘肃农业大学工学院,甘肃兰州730070 [2]兰州理工大学防震减灾研究所,甘肃兰州730050

出　　处：《甘肃科学学报》2011年第2期91-95,共5页Journal of Gansu Sciences

摘　　要：通过输入三向El-Centro波,采用时程分析法,对悬臂张弦立体桁架结构进行有控和无控状态的研究,探讨粘弹性阻尼器在悬臂张弦立体桁架结构中的减震性能.结果表明,粘弹性阻尼器对悬臂张弦立体桁架结构的节点位移和杆件轴力都有很好的控制效果,并提出了实用性的工程建议.By taking El-Centro wave and adopting time history analysis,the vibration control in cantilever spatial truss string structure under earthquake excitation is analyzed.A comparison is made for nodal displacements and internal forces of members between with control and without control.It is shown that the viscoelastic damper is very effective to mitigate earthquake responses of long span roofs.Thus it can give a reference to design,research and application of this structure.

关 键 词：悬臂结构 立体桁架 粘弹性阻尼器 减震控制 

分 类 号：TU311.3[建筑科学—结构工程] TU435