作　　者： ; ; ; (范峰）;

机构地区： 广州大学

出　　处： 《土木工程学报》 2014年第S1期214-220,共7页

摘　　要： 对钢支承柱间设置防屈曲支撑的网壳结构开展灾变控制研究。首先在网壳结构的支承钢柱间设置防屈曲支撑,系统地考察防屈曲支撑对网壳结构失效特征响应的影响规律,通过对比不同支撑体系时结构的全过程响应,得到防屈曲支撑的灾变控制效果;通过对典型算例的统计归纳,得到柱间设置防屈曲支撑的网壳结构三种失效模式,提出通过合理选取防屈曲支撑截面面积的方式达到控制结构失效模式的目的;最后,通过大规模的参数分析,讨论防屈曲支撑的设计参数以及结构参数对网壳结构强震失效特征的影响,并提出应用防屈曲支撑时参数的合理取值技术。 This paper carried out the study on catastrophe control of reticulated domes with buckling restrained braces in steel substructure. Firstly, characteristic responses of reticulated domes without braces, with common braces and with bucking restrained braces in the substructure are investigated. Catastrophe control mechanism and effect are illustrated by a series of parameter analysis. Secondly, three structural failure modes of reticulated domes with bucking restrained braces in steel substructure are illustrated. Finally, the influence of parameters including the area of bucking restrained braces, yielded strength, size of the substructure, rise-span ratio of reticulated shell, arrangement of bucking restrained braces within the substructure on catastrophe control mechanism is illustrated.

关 键 词： 网壳结构 防屈曲支撑 强震作用 失效模式 灾变控制

领　　域： [建筑科学] [建筑科学]