建筑钢结构进展2025，Vol.27Issue(7)：21-30,10.DOI:10.13969/j.jzgjgjz.20240304001
自复位双肢剪切型耗能段的滞回性能与力学模型
Hysteretic Performance and Mechanical Model for An Innovative Self-Centering Coupled Shear Link
摘要
Abstract
Based on the coupled shear link,shape memory alloy(SMA)bars and disc springs,an innovative self-centering coupled shear link(SC-CSL)is developed,which can effectively improve the seismic performance and seismic resilience capacity for the concentrically braced steel frame structure.The mechanical property of the SC-CSL was analyzed by the validated finite element method,so the hysteretic performance and failure mode can be obtained.Then ten numerical models were established to investigate the influence of SMA bar diameters and disc spring stiffness.Numerical results show that the SC-CSLs have excellent bearing capacity and self-centering capacity with low residual deformation.The SMA bars mainly sustain tension with the static disc springs under tension,and the disc springs mainly sustain compression with the static SMA bars under compression,while the coupled shear link can provide the bearing force during the whole loading process.Increasing the SMA bar diameters and disc spring stiffness of SC-CSL can improve the bearing capacity,secant stiffness and self-centering capacity,and reduce the residual deformation and equivalent viscous damping ratio simultaneously.Finally,the proposed mechanical model can accurately predict the maximum loads,which can provide the theoretical basis for the design and analysis of the SC-CSL.关键词
中心支撑钢框架结构/自复位双肢剪切型耗能段/滞回性能/力学模型/形状记忆合金/抗震性能Key words
concentrically braced steel frame structure/self-centering coupled shear link(SC-CSL)/hysteretic performance/mechanical model/shape memory alloy(SMA)/seismic performance分类
建筑与水利引用本文复制引用
朱剑波,曾思智,常丽青,邵铁峰,胡淑军..自复位双肢剪切型耗能段的滞回性能与力学模型[J].建筑钢结构进展,2025,27(7):21-30,10.基金项目
国家自然科学基金(52468025),江西省自然科学基金项目(20224BAB204062),江西省地质局青年科学技术带头人培养计划项目(2022JXDZKJRC09),江西省主要学科学术和技术带头人培养项目(20232BCJ23065) （52468025）
