«上一篇/Previous Article|本期目录/Table of Contents|下一篇/Next Article»

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

卷:

26卷

期数:

2009年02期

页码:

63-67

栏目:

出版日期:

2009-06-20

文章信息/Info

Title:

Calculation Method of Axial Bearing Capacity of Concrete-filled Square Steel Tubular Columns Reinforced by Inner Circular Steel Tube

作者:

张志权¹,赵胜民²,张玉芬¹,吴涛¹

1.长安大学建筑工程学院,陕西西安710061;2.陕西省第八建筑工程公司,陕西西安710068

Author(s):

ZHANG Zhi-quan¹, ZHAO Sheng-min², ZHANG Yu-fen¹, WU Tao¹

1. School of Civil Engineering, Chang'an University, Xi'an 710061, Shaanxi, China; 2. The Eighth Building Engineering Co., Ltd. of Shaanxi Province, Xi'an 710068, Shaanxi, China

关键词:

内圆钢管;  方钢管混凝土柱;  轴压;  极限承载力;  径厚比

Keywords:

inner circular steel tube;  concrete-filled square steel tubular column;  axial compression;  ultimate bearing capacity;  diameter-to-thickness ratio

分类号:

TU312

DOI:

-

文献标志码:

A

摘要:

考虑内外钢管对核心混凝土的双层约束作用以及钢管因环向受拉导致纵向应力降低的影响,对内圆钢管增强方钢管混凝土组合柱的核心混凝土和内外薄壁钢管的轴向极限应力分别进行了理论分析。利用双剪统一强度理论和薄壁圆筒理论计算了钢管的轴压承载力及混凝土在三向受压状态下的轴压承载力,并通过分析内圆钢管径厚比和直径的变化对组合柱轴压承载力的影响,将内圆钢管增强方钢管混凝土的承载力与试验中纯方钢管混凝土柱进行了比较。结果表明:所得组合柱的轴压承载力与文献的试验结果吻合较好; 内圆钢管对方钢管混凝土柱的增强作用主要体现在有效增强对核心混凝土的约束作用,大大提高了组合柱的力学性能。

Abstract:

With consideration of the double confinement and the decrease of longitudinal stress because of the hoop tension, the ultimate stress of the inner and outer steel tube as well as the inner concrete under axial ultimate stress state were analyzed respectively. The bearing capacity of steel tube was calculated by using the twin shear unified strength theory and the theory of thin-wall cylinder, and the axial bearing capacity of concrete under three-direction compression was also got. Through analyzing that the axial bearing capacity of compound column was influenced by diameter-to-thickness ratio and diameter of inner circular steel tube, a comparison was conducted between the results of the bearing capacity of the concrete-filled square steel tubular columns and that reinforced by the inner circular steel tube. The results show that the axial bearing capacities of the compound column under axial compression agree well with the experimental results of reference. Strength contribution of the inner circular steel tube is that provides particular reinforcement for the inner concrete, so that the concrete-confined square steel tubular column reinforced by inner circular steel tube is greatly improved in mechanics behavior.

参考文献/References:

[1] 赵均海.强度理论及其工程应用[M].北京:[KG*7]科学出版社,2003.
ZHAO Jun-hai.Strength Theory and Its Engineering Application[M].Beijing:Science Press,2003.
[2]王 菁,关 罡,李四平,等.方钢管砼轴压柱承载力的计算[J].建筑结构,1997(5):13-15.
WANG Jing,GUAN Gang,LI Si-ping,et al.Computation of Critical Loading for Concrete Filled Square Steel Tubular Columns Under Axial Compression[J].Building Structure,1997(5):13-15.
[3]裴万吉.复式钢管混凝土柱力学性能分析[D].西安:长安大学,2005.
PEI Wan-ji.Analysis on Mechanics Behavior of Composite Concrete-filled Steel Tubes[D].Xi'an:Chang'an University,2005.
[4]王志浩,成 戎.复合方钢管混凝土短柱的轴压承载力[J].清华大学学报:自然科学版,2005,45(12):1596-1599.
WANG Zhi-hao,CHENG Rong.Axial Bearing Cap-acity of Composite-sectioned Square Concrete-filled Steel Tubes[J].Journal of Tsinghua University:Science and Technology,2005,45(12):1596-1599.
[5]俞茂宏.混凝土强度理论及其应用[M].北京:高等教育出版社,2002.
YU Mao-hong.Strength Theory for Concrete and Its Application[M].Beijing:Higher Education Press,2002.
[6]翟 越,赵均海,计 琳,等.钢管混凝土轴向受压短柱承载力的统一解[J].长安大学学报:自然科学版,2006,26(3):55-58.
ZHAI Yue,ZHAO Jun-hai,JI Lin,et al.Unified Solutions on Axial Compressive Strength of Concrete Filled Steel Tu[HJ1.75mm]be[J].Journal of Chang'an University:Natural Science Edition,2006,26(3):55-58.
[7]张淑云,白国良,高志刚.高层组合框架-混凝土筒体混合结构静力数值分析[J].西安科技大学学报,2009,29(1):36-40.
ZHANG Shu-yun,BAI Guo-liang,GAO Zhi-gang.Static Characteristics of Core-RC and Compostite Frame Hybrid Structure in High-rise Buildings[J].Journal of Xi'an University of Science and Technology,2009,29(1):36-40.
[8]蔡绍怀,焦占拴.复式钢管混凝土柱的基本性能和承载力计算[J].建筑结构学报,1997,18(6):20-25.
CAI Shao-huai,JIAO Zhan-shuan.Behavior and Ul-timate Load Analysis of Multi Barrel Tube-confined Concrete Columns[J].Journal of Building Structures,1997,18(6):20-25.
[9]SAKINO K,NAKAHARA H,MORINO S,et al.Behavior of Centrally Loaded Concrete-filled Steel-tube Short Columns[J].Journal of Structural Engineering,2004,130(2):180-188.
[10]韩林海.钢管混凝土结构--理论与实践[M].北京:科学出版社,2004.
HAN Lin-hai.Concrete-filled Steel Tubular Structures-Theory and Practice[M].Beijing:Science Press,2004.
[11]吕西林,余 勇,陈以一,等.轴心受压方钢管混凝土短柱的性能研究:试验[J].建筑结构,1999(10):41-43.
LU Xi-lin,YU Yong,CHEN Yi-yi,et al.Studies on the Behavior of Concrete-filled Rectangular Tubular Short Column:Experiment[J].Building Structure,1999(10):41-43.

相似文献/References:

备注/Memo

备注/Memo:

收稿日期:2009-03-29
基金项目:国家自然科学基金项目(50608004); 陕西省自然科学基础研究计划项目(SJ08E₂14)
作者简介:张志权(1973-),男,陕西岐山人,讲师,工学硕士,E-mail:zzqca@163.com。

常用功能

更新日期/Last Update: 2009-06-20