Investigating the Effect of Low-Yield Yielding Dampers on the Seismic Behavior of Steel Frames

IF 1.4 4区工程技术 Q3 ENGINEERING, CIVIL

Periodica Polytechnica-Civil Engineering Pub Date : 2023-05-17 DOI:10.3311/ppci.21804

Kambiz Cheraghi, M. H. Tavana, R. Aghayari

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引用次数: 2

Abstract

Yielding dampers operate based on plastic deformations and energy dissipation. Given its low yield stress point and high ductility, low-yield steel is a suitable choice to build yielding dampers. In the present study, using the ABAQUS software, a number of pushover analyses have been carried out on a steel frame equipped with low-yield yielding dampers (LYDs). Therefore, using 40 pushover analyses, the effects of the number of the LYDs and the column’s axial force have been evaluated. All of the models were analyzed and their force-displacement curves were obtained. Using the obtained, different seismic aspects of the frame – i.e., ductility, strength, energy dissipation, stiffness – were assessed. Also, to calculate the values of effective stiffness and yield and ultimate strengths, a number of analytical relationships have been formulated. Finally, contour plots have been obtained which can be used to calculate the stiffness of the proposed LYD. Comparing results showed that the damper can, to an acceptable level, improve the seismic parameters of the structure. Also, if the stiffness and yield strength of all of the LYDs added to the frame are, respectively, 3.25 and 0.13 times those of the bare frame, the frame will have its best performance.

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低屈服屈服阻尼器对钢框架抗震性能影响的研究

屈服阻尼器的工作原理是基于塑性变形和能量耗散。低碳钢具有屈服应力点低、延展性好等特点，是制作屈服阻尼器的理想材料。在本研究中，使用ABAQUS软件，对装有低屈服屈服阻尼器(LYDs)的钢框架进行了一系列的推覆分析。因此，使用40个推覆分析，LYDs的数量和柱的轴向力的影响进行了评估。对所有模型进行了分析，得到了它们的力-位移曲线。使用得到的，不同的抗震方面的框架-即，延性，强度，能量耗散，刚度-进行了评估。此外，为了计算有效刚度、屈服和极限强度的值，已经制定了一些分析关系。最后，得到了用于计算LYD刚度的等高线图。对比结果表明，减振器能在可接受的范围内改善结构的抗震参数。同时，如果在框架中添加的所有LYDs的刚度和屈服强度分别是裸框架的3.25倍和0.13倍，则框架将具有最佳性能。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Periodica Polytechnica-Civil Engineering 工程技术-工程：土木

CiteScore

3.40

自引率

16.70%

发文量

审稿时长

12 months

期刊介绍： Periodica Polytechnica Civil Engineering is a peer reviewed scientific journal published by the Faculty of Civil Engineering of the Budapest University of Technology and Economics. It was founded in 1957. Publication frequency: quarterly. Periodica Polytechnica Civil Engineering publishes both research and application oriented papers, in the area of civil engineering. The main scope of the journal is to publish original research articles in the wide field of civil engineering, including geodesy and surveying, construction materials and engineering geology, photogrammetry and geoinformatics, geotechnics, structural engineering, architectural engineering, structural mechanics, highway and railway engineering, hydraulic and water resources engineering, sanitary and environmental engineering, engineering optimisation and history of civil engineering. The journal is abstracted by several international databases, see the main page.