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요약정보
柔性钢框架结构受力性能分析 / Analysis of Mechanical Performance of Steel Frames Composed of Non-Compact Members
Resource Type
Academic Journal
Authors
唐强
;
刘强
;
王连坤
;
杨惠贤
;
郭语
;
严自强
;
王吉琮
;
Qiang Tang
;
Qiang Liu
;
Liankun Wang
;
Huixian Yang
;
Yu Guo
;
Ziqiang Yan
;
Jicong Wang
Source
钢结构 / Steel Construction
. 36(11):8-13
Subject
柔性钢框架;抗震性能;有限元分析
Language
Chinese
ISSN
1007-9963
Online Access
Find it @ DONGA
초록
为了分析强弱轴、梁柱截面宽厚比、高跨比、轴压比对柔性框架结构在低周往复荷载作用下初始刚度、承载力、变形能力的影响,首先对一榀双层无轴压条件下的柔性钢框架进行拟静力试验研究,以试验结果为依据,在此基础上建立非线性有限元模型,并对以下内容进行了研究:1)轴压比为0.1、0.2、0.3、0.4时对结构的峰值位移、峰值荷载、初始刚度及变形能力的影响;2)通过分别改变结构层高和跨度来改变高跨比,研究结构受力性能变化;3)通过分别改变腹板和翼缘宽厚来改变宽厚比,研究其对结构受力性能的影响;4)柱的强、弱轴对构件受力性能的影响.结果表明:1)增大轴压比时,承载力、变形能力和初始刚度均降低;2)结构的承载能力、初始刚度与高跨比成反相关,变形能力随着高跨比的增大而增大;3)随宽厚比增大,承载能力、初始刚度均增大;4)强、弱轴方向的改变对结构整体性能的影响较大,当钢柱从强轴方向变为弱轴方向时,承载能力下降了40%,初始刚度下降了65%.
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