ESTIMATION OF PLASTIC DEFORMATION CAPACITY FOR H-SHAPED BEAMS ON LOCAL BUCKLING UNDER COMPRESSIVE AND TENSILE FORCES
ESTIMATION OF PLASTIC DEFORMATION CAPACITY FOR H-SHAPED BEAMS ON LOCAL BUCKLING UNDER COMPRESSIVE AND TENSILE FORCES
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H型梁在压拉力作用下局部屈曲的塑性变形能力估算
DOI：
10.3130/aijs.81.2133
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发表时间：
2016
期刊：
影响因子：
--
通讯作者：
K. Kasai
中科院分区：
文献类型：
--
作者：
Y. Kimura;A. Suzuki;K. Kasai
安装在支撑结构中的H型钢梁承受来自防屈曲支撑的压力和拉力。在我们之前的论文中，对具有不同梁截面的H型钢梁在压力和拉力作用下进行了试验。然而，对于H型钢梁在这两种力作用下的承载能力的评估尚未进行详细研究。在本文中，进行了额外的试验和数值分析，以揭示梁截面和轴向力大小对性能的影响。基于所获得的结果，本文提出了用于估算最大强度、塑性变形能力和累积塑性变形能力的评估公式。最后，提出了一个预测包辛格效应系数的经验公式，以便将累积塑性变形能力转换为滞回耗能。
H-shaped beams installed in a braced structure are subjected to compressive and tensile forces from buckling restrained braces. In our previous paper, experiments on H-shaped beams which possess various beam sections under compressive and tensile forces were conducted. However, evaluations for the capacities of H-shaped beams under these two forces have not been scrutinized yet. In this paper, additional experiments and numerical analyses are carried out to reveal the influences of beam sections and magnitudes of axial forces on the performances. Based on the obtained results, this paper presents evaluation formulae for estimating the maximum strength, plastic deformation capacity, and cumulative plastic deformation capacity. In the end, an empirical formula to predict the Bauschinger effect coefficient is proposed to convert the cumulative plastic deformation capacity to the hysteretic energy absorption.