新型内嵌U型耗能件自复位耗能支撑抗震性能研究

白正仙; 于鹏; 姜子钦; 张硕; 郭小农

doi:10.13206/j.gjgS25021501

新型内嵌U型耗能件自复位耗能支撑抗震性能研究

doi: 10.13206/j.gjgS25021501

白正仙^1,2,
于鹏¹,
姜子钦^1,2,
张硕¹,
郭小农³

1. 北京工业大学建筑工程学院, 北京 100124;
2. 北京工业大学, 北京市高层和大跨度预应力钢结构工程技术研究中心, 北京 100124;
3. 同济大学土木工程防灾减灾全国重点实验室, 上海 200092

基金项目:

国家自然科学基金项目（52078013）。

详细信息

作者简介:
白正仙,博士,副教授,主要从事新型预应力钢结构优化及防火研究。Email:zxbai@bjut.edu.cn

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出版历程
- 收稿日期: 2025-02-15

Seismic Performance of a Novel Self-Centering Energy-Dissipation Brace with Embedded U-Shaped Dampers

1. Faculty of Architecture, Civil and Transportation Engineering, Beijing University of Technology, Beijing 100124, China;
2. Beijing Engineering Research Center of High-Rise and Large-Span Prestressed Steel Structure, Beijing University of Technology, Beijing 100124, China;
3. State Key Laboratory for Disaster Reduction in Civil Engineering, Tongji University, Shanghai 200092, China

摘要

摘要: 为控制地震作用下结构的残余变形，提出了一种新型内嵌U型耗能件自复位耗能支撑，采用组合碟簧作为自复位系统提供复位能力，将U型耗能件作为耗能系统提供耗能能力。对支撑进行数值模拟，通过其滞回曲线分析不同设计参数对支撑滞回性能的影响。结果表明：新型自复位耗能支撑具有稳定的耗能能力和良好的自复位能力，且耗能能力、支撑极限承载力随着U型件厚度、U型件平直段长度、耗能板厚度的增加而增加，自复位能力随着钢绞线预应力的增大而增强，碟簧对合组数的增加可使支撑的极限变形能力显著提高，但碟簧刚度相对下降。
- 自复位耗能支撑 /
- 碟簧 /
- U型耗能件 /
- 抗震性能
Abstract: To mitigate residual deformation of structures under seismic action， a novel self-centering energy-dissipation brace with embedded U-shaped dampers （U-SCEDB） is proposed. The self-centering mechanism employs combined disc springs to provide self-centering capability， while a U-shaped damper serves as the energy dissipation system. Numerical simulations were performed on the brace， and the effects of various design parameters on its hysteretic behavior were systematically evaluated through analysis of the hysteretic curves. The results indicated that the proposed U-SCEDB exhibited stable energy dissipation capacity and superior self-centering capability. Specifically， the energy dissipation capacity and ultimate bearing capacity of the brace increased with the thickness of the U-shaped damper， the length of its straight segment， and the thickness of the energy dissipation plate. Additionally， the self-centering capability was enhanced with a higher pre-tension force applied to the steel strands. Increasing the number of disc spring stacks in series significantly enhanced the ultimate deformability of the brace， but the stiffness of the disc springs decreased relatively.
- self-centering energy-dissipation brace /
- disc springs /
- U-shaped damper /
- seismic performance

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