Experimental behaviour of box concrete-encased CFST eccentrically loaded column
Experimental behaviour of box concrete-encased CFST eccentrically loaded column
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DOI：
10.1680/macr.13.00067
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发表时间：
2013-10
影响因子：
2.7
通讯作者：
Yu-Feng An;Lin-Hai Han;X. Zhao
中科院分区：
文献类型：
--
作者：
Yu-Feng An;Lin-Hai Han;X. Zhao
箱形钢管混凝土桥墩近年来在我国高地震烈度区的桥梁中得到了广泛的应用。由于组合箱形截面角部钢管混凝土的贡献，它们有望比普通箱形钢筋混凝土构件具有更高的强度和更好的延性。然而，这类组合墩的研究是有限的。本文对钢管混凝土箱形柱偏心受压性能进行了试验研究。试验共进行了14个试件，包括12个箱形外包钢管混凝土试件和2个基准箱形钢筋混凝土试件。试验中的主要参数是高宽比和荷载偏心率。提出了一种计算钢管混凝土箱形柱承载力的简化方法。
Box concrete-encased, concrete-filled steel tube (CFST) piers have been used in bridges in high-earthquake-intensity regions in China in recent years. They are expected to have higher strength and better ductility than normal box reinforced concrete members owing to the contribution of CFSTs in the corners of the composite box section. However, studies on this type of composite piers are limited. This paper presents an experimental study on the behaviour of box concrete-encased CFST columns under eccentric compression. A total of 14 specimens, including 12 box concrete-encased CFST specimens and two reference box reinforced concrete specimens are tested. The main parameters in the test are height-to-width ratio and load eccentricity. A simplified method is proposed to predict the load capacity of the box concrete-encased CFST columns.