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首页> 外文期刊>Journal of structural engineering >Experimental and Numerical Investigations on the Seismic Behavior of Lightly Reinforced Concrete Beam-Column Joints
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Experimental and Numerical Investigations on the Seismic Behavior of Lightly Reinforced Concrete Beam-Column Joints

机译：轻钢混凝土梁柱节点的抗震性能试验与数值研究

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摘要

The experimental and analytical investigations carried out on lightly reinforced concrete beam-column joints subjected to seismic loading are presented in this paper. Five 3/4-scale reinforced concrete beam-column joints were tested to investigate the seismic behavior of the joints. The variables in the tested specimens include column orientations and the presence of slabs on the top of beams. The specimens were subjected to quasi-static load reversals to simulate earthquake loadings. Experimental results obtained include joint shear stresses, joint shear strains, observed cracking and initial stiffness. The test results provided some information about the seismic behavior of the specimens. However, due to the unique nature of the specimens, several key parameters could not be varied. Therefore, to elucidate further information, a numerical study consisting of three-dimensional nonlinear finite-element (FE) models was carried out. The FE models were then validated with the experimental results. This was followed by parametric studies, carried out to understand the effects of several critical fattors, including column axial load, ratio of column depth to beam reinforcement bar diameter, and effective slab width, on the complex behavior of the joints.
机译：本文介绍了轻型钢筋混凝土梁柱节点在地震荷载作用下的试验和分析研究。对五个3/4比例尺的钢筋混凝土梁柱节点进行了测试，以研究节点的抗震性能。被测样品中的变量包括柱的方向和梁顶部是否存在平板。对样本进行准静态载荷反转以模拟地震载荷。获得的实验结果包括接头剪切应力，接头剪切应变，观察到的开裂和初始刚度。测试结果提供了有关标本抗震性能的一些信息。但是，由于样品的独特性质，几个关键参数无法更改。因此，为了阐明更多信息，进行了由三维非线性有限元（FE）模型组成的数值研究。然后用实验结果验证了有限元模型。随后进行了参数研究，以了解几种关键胖子对接头复杂行为的影响，包括柱轴向载荷，柱深与梁钢筋直径的比率以及有效平板宽度。

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