|本期目录/Table of Contents|

[1]晏巧玲,陈宝春,薛建阳.钢管混凝土平缀管格构柱换算长细比计算方法[J].建筑科学与工程学报,2016,33(06):98-105.
　YAN Qiao-ling,CHEN Bao-chun,XUE Jian-yang.Calculation Method on Equivalent Slenderness Ratio of Concrete-filled Steel Tube Battened Columns[J].Journal of Architecture and Civil Engineering,2016,33(06):98-105.
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《建筑科学与工程学报》[ISSN:1673-2049/CN:61-1442/TU]

卷:
33卷
期数:
2016年06期
页码:
98-105
栏目:
出版日期:
2016-11-30

文章信息/Info

Title:
Calculation Method on Equivalent Slenderness Ratio of Concrete-filled Steel Tube Battened Columns
作者:
晏巧玲，陈宝春，薛建阳
福州大学土木工程学院
Author(s):
YAN Qiao-ling, CHEN Bao-chun, XUE Jian-yang
College of Civil Engineering, Fuzhou University
关键词:
钢管混凝土; 平缀管格构柱; 换算长细比; 剪切系数
Keywords:
concrete-filled steel tube;  battened column;  equivalent slenderness ratio;  shear flexibility parameter
分类号:
-
DOI:
-
文献标志码:
A
摘要:
分析了现有钢管混凝土平缀管格构柱换算长细比计算方法的假定条件和计算式，并将各方法计算的极限承载力与试验结果进行对比；以格构柱剪切柔度理论为基础，对钢管混凝土平缀管格构柱各变形项与总剪切变形量的比值进行分析，指出现有换算长细比计算方法的不合理之处。借鉴钢管混凝土（斜缀条）格构柱换算长细比乘法算法的计算思路，在剪切系数计算式中采用考虑节点构造参数影响的剪切柔度简化计算式，拟合得到放大系数与剪切系数的关系式。结果表明：采用所提出的换算长细比计算方法及GB 50923—2013中稳定系数计算方法得到的计算结果与试验结果吻合良好，证明该方法简单、实用且具有足够的精度。
Abstract:
The assumptions and formulas of existing calculation methods for equivalent slenderness ratio of concrete-filled steel tube（CFST）battened columns were analyzed. The calculated ultimate load capacity results were compared with test results. Based on the shear deformation theory of battened columns, each shear deformation item and its proportion in the whole deformation of CFST battened columns were analyzed. The unreasonableness in the existing method was pointed out. According to the calculation method of multiplication algorithm for equivalent slenderness ratio of CFST battened columns,the simplified formula of shear flexibility parameter was introduced to shear factor formula. The relationship between the amplification coefficient and shear flexibility parameter was obtained through the fitting analysis. The results show that the ultimate load carrying capacity can be calculated by adopting the calculation method for equivalent slenderness ratio and stability coefficient formula in GB 50923—2013. The calculated ultimate load carrying capacity agrees well with the test result, which indicates that the proposed method on the equivalent slenderness ratio of CFST battened columns is simple, practical and enough accurate.

参考文献/References:

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备注/Memo

备注/Memo:
更新日期/Last Update: 2016-12-07