Seismic design and performance evaluation of prestressed prefabricated frame with martensitic SMA buckling-restrained rods

IF 4.2 2区工程技术 Q1 ENGINEERING, GEOLOGICAL

Soil Dynamics and Earthquake Engineering Pub Date : 2025-04-10 DOI:10.1016/j.soildyn.2025.109434

Zhao-Hui Gong , Jin Zhang , Bin Zeng , Chun-Lin Wang

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引用次数: 0

Abstract

Prestressed prefabricated frames have been one of the research hotspots of seismic structures because of their excellent self-centering ability. Prestressed prefabricated Frame with Martensitic SMA Buckling-Restrained Rods (PF-MBRR) and Prestressed prefabricated Frame with Steel Buckling-Restrained Rods (PF-SBRR) had been designed in this paper. The nonlinear dynamic time-history analysis of the two frames were carried out by Opensees software. The results showed that the inter-story drift ratio and residual inter-story drift ratio of PF-MBRR were smaller than those of PF-SBRR under Maximum Considered Earthquake (MCE) intensity, indicating that the Martensitic SMA Buckling-Restrained Rod (MBRR) was more advantageous in controlling the seismic response of the frame under rare earthquake. The design method considered the role of MBRR core strengthening stage in PF-MBRR, which made the post-yield stiffness of PF-MBRR was 3.4 times higher than that of PF-SBRR. MBRR had better energy dissipation effect per unit volume compared with SBRR, and MBRR could be made shorter to improve material utilization efficiency.

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马氏体SMA抗屈曲约束杆预应力装配式框架抗震设计及性能评价

预应力装配式框架由于具有优异的自定心能力，一直是抗震结构研究的热点之一。本文设计了马氏体SMA抗屈曲棒预应力预制框架（PF-MBRR）和钢抗屈曲棒预应力预制框架（PF-SBRR）。利用Opensees软件对两榀框架进行了非线性动力时程分析。结果表明，在最大考虑地震烈度下，PF-MBRR的层间漂移比和剩余层间漂移比小于PF-SBRR，表明马氏体SMA抗屈曲杆（MBRR）在罕见地震下更有利于控制框架的地震反应。该设计方法考虑了MBRR核心强化阶段在PF-MBRR中的作用，使得PF-MBRR的屈服后刚度比PF-SBRR高3.4倍。与SBRR相比，MBRR具有更好的单位体积耗散效果，并且MBRR可以缩短以提高材料利用效率。

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

Soil Dynamics and Earthquake Engineering 工程技术-地球科学综合

CiteScore

7.50

自引率

15.00%

发文量

446

审稿时长

8 months

期刊介绍： The journal aims to encourage and enhance the role of mechanics and other disciplines as they relate to earthquake engineering by providing opportunities for the publication of the work of applied mathematicians, engineers and other applied scientists involved in solving problems closely related to the field of earthquake engineering and geotechnical earthquake engineering. Emphasis is placed on new concepts and techniques, but case histories will also be published if they enhance the presentation and understanding of new technical concepts.