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介绍不锈钢-碳钢管混凝土(CFSCT)柱这种新型的组合构件。这种将不锈钢和钢管混凝土(CFST)结构的优点结合在一起的组合件被认为具有更高的抗腐蚀性、承载力和更低的成本。对新提出的组合柱进行了一系列的抗压试验,提出一个关于改进混凝土芯的应力-应变模型,建立一个三维的非线性有限元(FE)模型并验证了试验结果。在荷载-变形响应方面的试验结果与数值结果相当一致。对包括钢管厚度、直径和碳钢管屈服强度在内的参数进行了研究,从而更清晰地认识这种组合柱的性能。
Describes the stainless steel - carbon steel tube concrete (CFSCT) column of this new combination of components. This assembly, which combines the advantages of stainless steel and concrete filled steel tube (CFST) structures, is believed to have higher corrosion resistance, load bearing capacity and lower costs. A series of compressive tests were conducted on the newly proposed composite columns. A stress-strain model was proposed to improve the concrete core. A three-dimensional nonlinear finite element model was established and the experimental results were verified. The test results in load-deformation response are in good agreement with the numerical results. The parameters including the tube thickness, diameter and yield strength of carbon steel tube were studied to understand the performance of the composite column more clearly.