[1]苏明周,李 慎,连 鸣,等.K 形偏心支撑钢框架的弹性抗侧刚度与极限承载力[J].西安建筑科技大学学报:自然科学版,2014,46(06):791-799.[doi:10.15986/j.1006-7930.2014.06.005]
　SU Mingzhou,LI Shen,LIAN Ming,et al.The elastic lateral stiffness and ultimate capacity of K-eccentric braced steel frames[J].J.Xi’an Univ. of Arch. & Tech.:Natural Science Edition,2014,46(06):791-799.[doi:10.15986/j.1006-7930.2014.06.005]
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K 形偏心支撑钢框架的弹性抗侧刚度与极限承载力()
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西安建筑科技大学学报:自然科学版[ISSN:1006-7930/CN:61-1295/TU]

卷:
46
期数:
2014年06期
页码:
791-799
栏目:
出版日期:
2014-12-31

文章信息/Info

Title:
The elastic lateral stiffness and ultimate capacity of K-eccentric braced steel frames
文章编号:
1006-7930(2014)06-0791-09
作者:
苏明周; 李 慎; 连 鸣; 李 蕾
(西安建筑科技大学结构与抗震教育部重点实验室,陕西 西安 710055)
Author(s):
SU Mingzhou ;  LI Shen ;  LIAN Ming ;  LI Lei
(Key Laboratory of Structural Engineering and Earthquake Resistance of the Ministry of Education, Xi’an Univ. of Arch. & Tech., Xi’an 710055, China)
关键词:
弹性抗侧刚度; K 形偏心支撑; 耗能连梁; 极限承载力; 屈服机制
Keywords:
elastic lateral stiffness;  K-eccentric braced frame;  link;  ultimate bearing capacity;  yielding mechanism
分类号:
TU391
DOI:
10.15986/j.1006-7930.2014.06.005
文献标志码:
A
摘要:
为了明确K 形偏心支撑的传力路径和内力分配,便于计算层间侧移和耗能连梁转角,依据结构力学基本假定,给出了K 形偏心支撑框架各构件在侧向力作用下的内力表达式,进而推导出K 形偏心支撑弹性抗侧刚度的近似计算公式,通过试验数据和ANSYS 有限元分析,验证了公式的精确性,并提出了K 形偏心支撑构件的简便设计方法;基于虚功原理和小变形假定,当已知外力分布时,依据偏心支撑达到极限状态时的典型屈服机制,推导出K 形偏心支撑极限承载力公式,利用SAP2000 对10 层算例进行推覆分析,验证了极限承载力公式,为工程设计提供参考依据.
Abstract:
In order to identify the loading path and internal force distribution of K-eccentric braced steel frames, and compute story drift and link rotation conveniently, based on the fundamental assumption of structural mechanics, the formulas of elastic internal forces of K-eccentric braced steel frames subjected to lateral loads have been proposed. The elastic lateral stiffness approximate formula of K-eccentric braced steel frames is then derived, and the formulas are well-supported by the experimental data and finite element analysis. Simple and convenient design method of K-eccentric braced frames is proposed. When lateral load distribution was known, the formula of ultimate capacity of K-eccentric braced steel frames is derived based on virtual work principle, small deformation assumption and typical yielding mechanism of ultimate state. Pushover analysis of 10-storey K-eccentric braced steel frame is conducted by finite element software SAP2000, and the analysis result confirmed well with the calculation of formula. The formula of ultimate capacity can provide a reference for structure design of K-eccentric braced steel frames.

参考文献/References:

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相似文献/References:

[1]苏明周,李 慎,樊瑞昌,等.单斜杆偏心支撑的弹性抗侧刚度[J].西安建筑科技大学学报:自然科学版,2014,46(02):194.[doi:10.15986/j.1006-7930.2004.02.008]
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备注/Memo

备注/Memo:
收稿日期:2014-04-04   修改稿日期:2014-12-03
基金项目:国家自然科学基金项目(51178382)
作者简介:苏明周(1971-),男,教授,博导,主要从事新型结构体系受力性能和设计理论研究.E-mail:sumingzhou@163.com
更新日期/Last Update: 2015-09-01