Cyclic behavior of steel self-centering prestressed beam-column connection with weakened FCP

IF 4 2区工程技术 Q1 CONSTRUCTION & BUILDING TECHNOLOGY

Journal of Constructional Steel Research Pub Date : 2024-11-17 DOI:10.1016/j.jcsr.2024.109153

Zi-Qin Jiang , Zi-Yao Niu , Xiao-Feng Yang , Zhong-Shuai Yang , Taichiro Okazaki

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引用次数: 0

Abstract

A self-centering prestressed beam-column connection (SCPBCC) with weakened flange cover plate (FCP) is proposed to achieve self-centering features and post-earthquake recoverability at reasonable cost. The self-centering and energy dissipation capacity of SCPBCC are controlled respectively by the prestressed cable and FCP, and the bearing capacity of SCPBCC is controlled by adjusting the bearing ratio of the cable and FCP. Five SCPBCC specimens were subjected to large and small-amplitude, cyclic-loading tests. The test results demonstrated that the new SCPBCC can meet requirements of stiffness and strength, achieve excellent self-centering features, survive multiple aftershocks and allows for replacement. The connection can supply ample energy dissipation through cyclic yielding of the FCPs. Reasonable variable section and limited prestress can protect beams and the column from plastic deformation. The proposed design methodology ensures good bearing and self-resetting capacity for SCPBCCs.

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削弱 FCP 的钢自定心预应力梁柱连接的循环行为

本文提出了一种带有削弱翼缘盖板（FCP）的自定中心预应力梁柱连接（SCPBCC），以合理的成本实现自定中心功能和震后恢复能力。SCPBCC 的自定心和耗能能力分别由预应力拉索和 FCP 控制，而 SCPBCC 的承载能力则通过调整拉索和 FCP 的承载比来控制。对五个 SCPBCC 试件进行了大振幅和小振幅循环加载试验。试验结果表明，新型 SCPBCC 能够满足刚度和强度要求，具有出色的自定心功能，可经受多次余震并允许更换。通过 FCP 的周期性屈服，该连接可提供充足的能量消耗。合理的变截面和有限的预应力可以保护梁和柱不发生塑性变形。建议的设计方法可确保 SCPBCC 具有良好的承载能力和自复位能力。

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

Journal of Constructional Steel Research 工程技术-工程：土木

CiteScore

7.90

自引率

19.50%

发文量

550

审稿时长

46 days

期刊介绍： The Journal of Constructional Steel Research provides an international forum for the presentation and discussion of the latest developments in structural steel research and their applications. It is aimed not only at researchers but also at those likely to be most affected by research results, i.e. designers and fabricators. Original papers of a high standard dealing with all aspects of steel research including theoretical and experimental research on elements, assemblages, connection and material properties are considered for publication.