东北大学学报（自然科学版）

东北大学学报(自然科学版) ›› 2010, Vol. 31 ›› Issue (4): 589-592+608.DOI: -

• 论著 • 上一篇    下一篇

钢管-钢骨混凝土组合短柱轴压承载力研究

刘晓;王连广;王兵;   

  1. 东北大学资源与土木工程学院;沈阳大学建筑工程学院;
  • 收稿日期:2013-06-20 修回日期:2013-06-20 出版日期:2010-04-15 发布日期:2013-06-20
  • 通讯作者: -
  • 作者简介:-
  • 基金资助:
    辽宁省自然科学基金资助项目(20092044);;

On the axial-load bearing capacity of short steel tube column reinforced with structural steel and concrete

Liu, Xiao (1); Wang, Lian-Guang (1); Wang, Bing (2)   

  1. (1) School of Resources and Civil Engineering, Northeastern University, Shenyang 110004, China; (2) School of Architectural and Civil Engineering, Shenyang University, Shenyang 110044, China
  • Received:2013-06-20 Revised:2013-06-20 Online:2010-04-15 Published:2013-06-20
  • Contact: Liu, X.
  • About author:-
  • Supported by:
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摘要： 为了研究钢管-钢骨混凝土这种新型重载柱的力学性能,基于核心混凝土抗压强度与侧压力之间的非线性关系,分析了组合柱各部分应力状态.采用极限平衡理论建立组合柱截面的力学方程,确定了短柱轴压承载力计算方法;并进一步分析了提高组合柱轴心抗压承载力的主要影响因素,确定了极限状态下各部分应力值与套箍指标之间的关系.计算结果表明,试验值与本文理论计算结果吻合良好;套箍指标和钢管用钢量对提高承载力有显著的贡献,为工程应用提供了重要的理论依据.

关键词: 组合柱, 极限平衡法, 轴压, 套箍指标

Abstract: To investigate the mechanical properties of the newly-developed heavy-load short steel tube column reinforced with structural steel and concrete, the stress states of the three different components of the column were analyzed according to the nonlinear relationship between concrete's compression resistance and side pressure. Based on the ultimate equilibrium theory, the ultimate cross-section bearing capacity formula of the column under axial-load was given. Moreover, the main influencing factors on increasing the axial-load bearing capacity were analyzed to determine the relationships between the stress of different components and hoop confining index. The calculated results conform highly with the tested values as shown in earlier works. The hoop confining index and steel quantity used in the column play indispensable roles in enhancing the axial-load bearing capacity, which offers a theoretical basis to the design in engineering applications.

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