Performance of Concrete-Filled Steel Tubes subjected to Eccentric Tension
Performance of Concrete-Filled Steel Tubes subjected to Eccentric Tension
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DOI：
10.1061/(asce)st.1943-541x.0001304
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发表时间：
2015-03
期刊：
影响因子：
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通讯作者：
Wei Li;Lin-Hai Han;T. Chan
中科院分区：
文献类型：
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作者：
Wei Li;Lin-Hai Han;T. Chan
摘要 钢管混凝土（CFST）构件已应用于各种建筑项目中。当它们用作桁架中的弦杆或在建筑柱中承受拉力和弯曲的组合时，它们可能会受到拉力。然而，迄今为止，对偏心张力下CFST成员行为的研究仍然有限。因此，本文对偏心加载的钢管混凝土受拉构件进行了实验和数值研究。实验参数包括荷载偏心距和截面配筋率。破坏模式表明，内填充混凝土与钢管有效配合，外管改善了混凝土的裂缝模式。还开发了有限元 (FE) 模型并通过实验结果进行验证。然后使用经过验证的有限元模型来评估载荷和力矩分布以及载荷-力矩相互作用关系。最后，CFST成员的承载能力在e...
AbstractConcrete-filled steel tubular (CFST) members have been used in various kinds of construction projects. They can be subjected to tension when they are used as chord members in trusses or subjected to combined tension and bending in building columns. However, to date research on the behavior of CFST members under eccentric tension is still limited. This paper thus presents both experimental and numerical investigations on the eccentrically loaded CFST tensile members. The experimental parameters include the eccentricity of the load and the steel ratio of the cross section. The failure modes show that the in-filled concrete works effectively with the steel tube, and the outer tube improves the crack pattern of the concrete. The finite-element (FE) model is also developed and validated by experimental results. The validated FE model is then used to assess the load and moment distributions as well as the load-moment interaction relationship. Finally, the load-carrying capacities of CFST members under e...