张弦拱桁架结构在多维地震作用下的抗震性能  

Seismic Performance of Tensioned Arch Truss Structures Under Multi-Dimensional Earthquakes

作　　者：黄坤涛 刘辉 班庆荣 尹玉光 HUANG Kuntao;LIU Hui;BAN Qingrong;YIN Yuguang(China QiyuanEngineering Design and Research Institute Co.,Ltd,Xi′an 710018,China)

机构地区：[1]中国启源工程设计研究院有限公司,陕西西安710018

出　　处：《洛阳理工学院学报（自然科学版）》2023年第3期26-33,70,共9页Journal of Luoyang Institute of Science and Technology：Natural Science Edition

摘　　要：利用SAP2000软件建立张弦拱桁架结构整体模型,研究了隔震结构与铰接结构在多维地震作用下的底部剪力、杆件内力及结构变形等特性。隔震结构除低阶振型以结构整体振动为主外,具有显著的空间扭转振动特性;相比于铰接张弦拱桁架结构,采用隔震技术后张弦拱桁架结构的基底剪力有所减小,表现出了不同程度的减震效果;多维地震输入对隔震结构的基底剪力无明显影响,但隔震结构由于拱脚缺少侧向约束,导致隔震结构在地震作用下的最大竖向位移比铰接结构更大,且在水平方向上的空间扭转变形特性也较为明显。The integral model of tensioned arch truss structure is established by SAP2000 software,and the characteristics of bottom shear force,member internal force and structural deformation of seismic isolation structure and hinged structure under multi-dimensional earthquake action are studied.The analysis results show that the seismic isolation structure not only has the low order vibration mode mainly based on the overall vibration of the structure,but also has significant spatial torsional vibration characteristics.Compared with the tensioned arch truss hinged structure,the base shear force of the tensioned arch truss structure is reduced after the isolation technology is adopted,showing different degrees of seismic damping effect.Moreover,the multi-dimensional seismic input has no obvious effect on the base shear force of the seismic isolation structure.However,the seismic isolation structure lacks lateral constraint at the arch foot,resulting in its maximum vertical displacement under earthquakes is larger than that of the hinged structure,and the characteristic of spatial torsional deformations in the horizontal direction is also obvious.

关 键 词：张弦拱桁架结构 多维地震作用 结构地震响应 抗震性能 

分 类 号：TU352[建筑科学—结构工程]