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首页> 外文期刊>Journal of Civil, Construction and Environmental Engineering >Study of Eccentric and Buckling-Restrained Bracing Systems Used in Frames
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Study of Eccentric and Buckling-Restrained Bracing Systems Used in Frames

机译：框架中使用的偏心和屈曲束缚的支撑系统研究

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The present paper studies eccentric braces (EBs) and buckling-restrained braces (BRBs) used in steel frames. The eccentrically braced frames (EBFs) and buckling-restrained braced frames (BRBFs) that have respectively employed the EBs and BRBs are considered with different types of links as shear, moment-shear and moment links depending on their link length which is an important factor in the design of the EBFs and BRBFs. The BRB consists of a steel core and its surrounding steel tube filled with concrete. The concrete confinement prevents buckling of the steel core. The analysed EBFs and BRBFs by the finite element software ABAQUS under earthquake records are taken into account. Effects of the links of the EBFs and BRBFs on the performance of the frames are discussed. The results uncover that most of the lateral displacements of the EBFs and BRBFs having the shear link are smaller than their counterparts having the moment-shear and moment links, whilst, all the base shear capacities of the former are the greatest. However, majority of the EBFs and BRBFs with the moment link dissipate less energy than their counterparts with the shear and moment-shear links, whereas, most of the link rotations of the former are smaller than the latter. In addition, the BRBFs generally demonstrate better performance than their EBF counterparts.
机译：本文研究了钢框架中使用的偏心支架（EBS）和屈曲束缚的括号（BRB）。分别使用EBS和BRB的偏心支撑框架（EBFS）和屈曲束缚的支撑帧（BRBF）是用不同类型的链接作为剪切，力矩剪切和时刻连杆，这取决于它们的连杆长度，这是一个重要因素在设计EBFS和BRBFS。 BRB由钢芯及其周围的钢管组成，填充混凝土。混凝土限制可防止钢芯屈曲。通过有限元软件ABAQUS在地震记录下进行分析的EBFS和BRBFS。讨论了EBF和BRBFS对框架性能的影响。结果揭示了具有剪切连杆的EBF和BRBF的大多数横向位移小于其同时剪切和时刻环节的对应物，而前者的所有基本剪切容量最大。然而，大多数EBF和BRBFS的瞬间链接比具有剪切和力矩剪切链接的对应物的能量更少，而前者的大多数连杆旋转小于后者。此外，BRBFS通常表现出比其EBF对应物更好的性能。

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