基于钢框架耗能减震需求的外置位移放大式自复位耗能机构研究

王正川; 连鸣

doi:10.3724/j.gyjzG24120304

基于钢框架耗能减震需求的外置位移放大式自复位耗能机构研究

doi: 10.3724/j.gyjzG24120304

王正川¹,
连鸣^1,2, ,

1. 西安建筑科技大学土木工程学院, 西安 710055;
2. 西安建筑科技大学结构工程与抗震教育部重点实验室, 西安 710055

基金项目:

国家自然科学基金项目（52478205）。

详细信息

作者简介:
王正川，硕士，主要从事可恢复功能钢结构体系抗震性能的研究工作。

通讯作者:
连鸣，博士，教授，博士生导师，主要从事可恢复功能钢结构体系抗震机理与设计方法方面的研究工作，lianming@xauat.edu.cn。

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出版历程
- 收稿日期: 2024-12-03
- 网络出版日期: 2026-07-06

Research on External Displacement-Amplification Self-Resetting Energy Dissipation Mechanism Based on the Energy Dissipation and Damping Requirements of Steel Frames

WANG Zhengchuan¹,
LIAN Ming^{1,2
, ,}

1. School of Civil Engineering, Xi'an University of Architecture and Technology, Xi'an 710055, China;
2. Key Lab of Structural Engineering and Earthquake Resistance, Ministry of Education, Xi'an University of Architecture and Technology, Xi'an 710055, China

摘要

摘要: 已有位移型阻尼器的位移放大机构常布置于钢框架的层间，但结构层间位移有限且位移型阻尼器在经历大位移后存在显著的残余变形。为解决上述问题，将位移放大装置和摩擦型自复位阻尼器相结合，提出了位移放大式自复位耗能机构（EDAS），该机构通过跨楼层并外置于结构外立面的形式与钢框架连接。首先介绍了EDAS的基本构造和工作原理，推导了EDAS的位移放大系数γ计算公式。随后建立了安装EDAS钢框架和传统钢框架子结构的有限元模型，对比了两者的滞回性能，并通过安装EDAS钢框架子结构有限元模型的参数分析，验证了所提γ计算公式的准确性。结果表明：EDAS可有效放大摩擦型自复位阻尼器的耗能能力，使EDAS兼具高耗能与自复位能力；安装EDAS可显著提升钢框架的耗能与震后残余变形控制能力；参数分析结果表明所提出的γ计算公式具有较高的准确性。
- 位移放大 /
- 钢框架 /
- 耗能减震 /
- 自复位 /
- 数值模拟
Abstract: Displacement amplification mechanisms for existing displacement-dependent dampers are typically arranged between the inter-story spaces of steel frames， but the inter-story displacement of the structure is limited， and such dampers exhibit significant residual deformation after experiencing large displacements. To address these issues， a displacement amplification device was combined with a friction-based self-resetting damper to propose the external displacement amplification self-resetting energy dissipation system （EDAS）， which is connected to the frame in an inter-story， externally mounted configuration on the building facade. The basic structure and working principle of EDAS were first introduced， and the formula for calculating the displacement amplification coefficients of EDAS was derived. Finite element models of steel frames with EDAS installed and traditional steel frame substructures were subsequently developed to compare their hysteretic performance. Through parametric analysis of the finite element model of the EDAS-installed steel frame substructure， the accuracy of the proposed displacement amplification coefficient formula was validated. The results show that EDAS can effectively enhance the energy dissipation capacity of friction-based self-resetting dampers， giving EDAS both high energy dissipation and self-resetting capabilities. Installing EDAS significantly improves the energy dissipation and post-earthquake residual deformation control of steel frames. The parametric analysis results confirm the high accuracy of the proposed displacement amplification coefficient formula.
- displacement amplification /
- steel frame /
- energy dissipation and damping /
- self-resetting /
- numerical simulation

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