A Simplified Method for Analyzing Overall Stability of Flexural-Type Braced Frame Structures

doi:10.17559/TV-20220505073935

CORC > 力学研究所 > 中国科学院力学研究所 > 非线性力学国家重点实验室

	A Simplified Method for Analyzing Overall Stability of Flexural-Type Braced Frame Structures
	Lan, Shuwei ; Xiao C(肖驰); Chen, Xu ; Wang, Chunhua
刊名	TEHNICKI VJESNIK-TECHNICAL GAZETTE ; 3
	2023-04
卷号	30 页码:724-732
关键词	critical factor critical force flexural-type braced structures frame lateral stiffness load stiffness
ISSN号	1330-3651
DOI	10.17559/TV-20220505073935
英文摘要	It is difficult to determine the effective length coefficient of weakly braced frame columns using the effective length coefficient method. When the stability of braced frame structures is calculated using the effective length coefficient method, it cannot reflect the effect of the brace on the frame, the mutual support of columns on the same floor, and vertical interactions between different floors, which is easy to lead to unreasonable design. In this study, based on a spring-rocking column model, the structural transformation concept was used to transform the second-order problem of determining the critical force of braced frame structures into a first-order problem of calculating the lateral stiffness of the structure. First, the repetitive frame element was used to obtain the lateral stiffness of each floor, and the second-order effect coefficient was used to determine the load stiffness of the floor. Next, the lateral stiffness and load stiffness of each floor was assembled. Finally, the principle in which the load stiffness reduces the lateral stiffness of the structure to zero when the braced frame structure buckles laterally were applied to derive a formula to directly calculate the critical force of the flexural-type brace frame structure. This formula reflects the interactions between the braced structure and the frame, the mutual support of columns on the same floor, and the vertical interactions between different floors. Therefore, it can compensate for the deficiency in which the criterion cannot calculate the critical force of braced frame structures and is suitable for quantitatively analyzing the vertical interactions between different floors of braced frame structures.
分类号	Q4
WOS研究方向	WOS:000975513400004
语种	英语
资助机构	youth project of joint special fund for local universities in Yunnan province of China [202101BA070001-003] ; National Natural Science Foundation of China [51868034]
其他责任者	Xiao, C
内容类型	期刊论文
源URL	[http://dspace.imech.ac.cn/handle/311007/92267]
专题	力学研究所_非线性力学国家重点实验室
作者单位	1.(Xiao Chi) Chinese Acad Sci Inst Mech 15 North Fourth Ring West Rd Beijing 100080 Peoples R China 2.(Lan Shuwei, Chen Xu, Wang Chunhua) Kunming Univ Fac Architecture & Civil Engn 2 Puxin RdEcon & Technol Dev Zone Kunming 650214 Yunnan Peoples R China
推荐引用方式 GB/T 7714	Lan, Shuwei,Xiao C,Chen, Xu,et al. A Simplified Method for Analyzing Overall Stability of Flexural-Type Braced Frame Structures[J]. TEHNICKI VJESNIK-TECHNICAL GAZETTE, 3,2023,30:724-732.
APA	Lan, Shuwei,肖驰,Chen, Xu,&Wang, Chunhua.(2023).A Simplified Method for Analyzing Overall Stability of Flexural-Type Braced Frame Structures.TEHNICKI VJESNIK-TECHNICAL GAZETTE,30,724-732.
MLA	Lan, Shuwei,et al."A Simplified Method for Analyzing Overall Stability of Flexural-Type Braced Frame Structures".TEHNICKI VJESNIK-TECHNICAL GAZETTE 30(2023):724-732.