《Earthquake Engineering and Structural Dynamics》杂志刊登“矩形截面钢筋混凝土柱在双轴循环加载作用下性态的实验评估”

作者：Hugo Rodrigues, António Arêde, Humberto Varum, Aníbal G. Costa

刊物：《Earthquake Engineering and Structural Dynamics》，2013年，42卷第2期，231-259页

关键词：钢筋混凝土柱的循环加载行为；双轴实验；刚度退化；强度退化；极限承载力；延性

摘要：近年来有很多关于测量钢筋混凝土柱循环加载行为的实验研究。然而，大部分的研究是在关于方形截面柱在单向恒定荷载下进行的。本研究对四个全级配的矩形截面柱进行不同类型的加载，包括单轴和双轴加载条件，前两个柱分别进行强循环加载和弱循环加载，其他柱使用不同的加载路径进行双向加载试验。所有的柱都在恒定轴向荷载作用下进行试验的。本文给出了实验的结果，分析全部柱的加载行为，重点关注了因增加循环荷载而造成的刚度退化和强度退化问题。最后计算了欧洲规范8的第三部分提出的基于变形的柱的性能极限并将其与本实验结果进行比较。

Experimental evaluation of rectangular reinforced concrete column behaviour under biaxial cyclic loading

Authors: Hugo Rodrigues, António Arêde, Humberto Varum, Aníbal G. Costa

Journal: Earthquake Engineering and Structural Dynamics, Volume 42, Issue 2, pages 231–259, February 2013

Key words: RC column cyclic behaviour; biaxial testing; stiffness degradation; strength degradation; ultimate capacity; ductility

Abstract: The cyclic behaviour of reinforced concrete columns has been the subject of many experimental studies in recent years. However, most of these studies have focused on the unidirectional loading of columns with square cross-sections under constant axial loading conditions. In the present study, four types of full-scale quadrangular building columns were tested under different types of loading, including uniaxial and biaxial loading conditions. The first two specimens of each column type were independently cyclically tested in the strong and weak directions. Bidirectional tests using different loading paths were performed on the other column specimens. All columns were tested under constant axial loading conditions. In this paper, the experimental results are presented, and the global behaviour of tested columns is discussed, particularly focusing on the stiffness and strength degradation because of the increasing cyclic demand. Finally, the deformation-based performance limits proposed in Part 3 of Eurocode 8 were calculated and compared with the experimental results. 

原文链接：http://onlinelibrary.wiley.com/doi/10.1002/eqe.v42.2/issuetoc