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《建筑科学与工程学报》[ISSN:1673-2049/CN:61-1442/TU]

卷:

27卷

期数:

2010年01期

页码:

43-48

栏目:

出版日期:

2010-03-20

文章信息/Info

Title:

Experimental Study of Bond Strength of Concrete-filled Square Steel Tube

作者:

黄一杰^1,2,薛建阳²,赵鸿铁²,仵建斌²

1. 同济大学 建筑工程系,上海 200092; 2. 西安建筑科技大学 土木工程学院,陕西 西安 710055

Author(s):

HUANG Yi-jie^1,2, XUE Jian-yang², ZHAO Hong-tie², WU Jian-bin²

1. Department of Buiding Engineering, Tongji University, Shanghai 200092, China; 2. School of Civil Engineering, Xi'an University of Architecture and Technology, Xi'an 710055, Shaanxi, China

关键词:

方钢管混凝土;  粘结强度;  影响因素;  弹性模量

Keywords:

concrete-filled square steel tube;  bond strength;  influence factor;  elastic modulus

分类号:

TU392.3

DOI:

-

文献标志码:

A

摘要:

为了得出方钢管混凝土构件的粘结强度计算公式,进行了不同长宽比、宽厚比方钢管混凝土柱的轴心推出试验,得到了方钢管混凝土的粘结强度变化规律; 总结并分析了各国相关试验,提出了当核心混凝土周边的薄壁混凝土破坏之后试件破坏这一思路,利用弹性力学与材料力学的相关理论,推导了方钢管混凝土粘结强度的半经验半理论公式。分析结果表明:方钢管混凝土的粘结强度受构件宽厚比影响较大,受长宽比影响较小; 所得公式的计算结果与试验值吻合良好,为方钢管混凝土粘结强度计算提供了新思路。

Abstract:

To obtain the bond strength calculating formula of concrete-filled square steel tube specimens, push-out experiments were carried outunder different slendernesses and width-thickness ratios, and the change principle of bond strength of concrete-filled square steel tube specimens was obtained. According to domestic and foreign experiments, authors proposed that when the thin-walled concrete damaged, the sample was destoryed. Base on this principle, a semiemprical theory formula was deduced using elastic mechanics and material mechanics methods. Analytical results show that bond strength of concrete-filled square steel tube specimen is more affected by width-thickness ratio, and is less affected by the slenderness. The results of formula match well with those of experiments, which provide a new way to calculate bond strength of concrete-filled square steel tube columns.

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备注/Memo

备注/Memo:

收稿日期:2009-12-05
基金项目:国家自然科学基金项目(50478044)
作者简介:黄一杰(1983-),男,山东济南人,同济大学工学博士研究生,E-mail:302huangyijie@163.com。

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更新日期/Last Update: 2010-03-20