混合形状记忆合金及屈曲约束支撑系统自复位抗震研究

李春祥;汤钰新

振动与冲击 ›› 2014, Vol. 33 ›› Issue (10) : 152-156.

PDF(1407 KB)
PDF(1407 KB)
振动与冲击 ›› 2014, Vol. 33 ›› Issue (10) : 152-156.
论文

混合形状记忆合金及屈曲约束支撑系统自复位抗震研究

  • 李春祥,汤钰新
作者信息 +

Self-centering earthquake-resistance of hybrid shape memory alloy and buckling-restrained brace system

  • LI Chun-xiang,TANG Yu-xin
Author information +
文章历史 +

摘要

提出混合形状记忆合金(SMA)及屈曲约束支撑(BRB)系统混合自复位装置。在混合自复位装置中,BRB发挥耗能作用,而SMA提供自复位功能以减小结构震后残余变形。据SMA一维宏观唯象本构模型,编制用于ABAQUS有限元分析的用户材料子程序SMA-UMAT;用ABAQUS及子程序SMA-UMAT分别对设置BRB及混合自复位装置钢框架(简称BRBF,SC-BRBF)进行低周反复与动力弹塑性地震反应分析。数值结果表明,虽SC-BRBF峰值层间位移角、峰值基底剪力及峰值楼层加速度较BRBF有一定程度放大,但与BRBF相比,SC-BRBF可减小结构残余位移50%以上。故该混合自复位装置在大跨结构及高烈度抗震设防地区具有一定工程应用前景。

Abstract

In the present paper, a hybrid self-centering device is proposed, which consists of both the shape memory alloy (SMA) and buckling-restrained brace (BRB). In this hybrid self-centering device, the BRB play a role in dissipating seismic energy while the SMA provides the self-centering function to decrease the residual deformations. Based on the commercially available finite-element software package ABAQUS, a user-defined material mechanical behavior subroutine (SMA-UMAT) is firstly established for one-dimensional phenomenological constitutive model of SMA. Low cyclic analysis and dynamic elasto-plastic seismic analysis of the steel frames with BRBs and hybrid self-centering devices, referred respectively to as BRBF and SC-BRBF, are then implemented with resorting to ABAQUS with SMA-UMAT. Numerical results show that with respect to BRBF, the SC-BRBF can decrease the residual deformations by more than 50%, though in a certain extent, magnifying the peak interstorey drift ratios (IDRs), peak base shear, and peak floor accelerations (PFAs). Therefore, the present hybrid self-centering device has certain engineering application prospect for large span structures and the zones of high seismic fortification intensity.


关键词

地震 / 自复位 / 形状记忆合金 / 屈曲约束支撑 / 低周反复分析 / 动力弹塑性地震反应分析

Key words

earthquakes / self-centering / shape memory alloy / buckling-restrained brace / low cyclic analysis / dynamic elasto-plastic seismic analysis

引用本文

导出引用
李春祥;汤钰新. 混合形状记忆合金及屈曲约束支撑系统自复位抗震研究[J]. 振动与冲击, 2014, 33(10): 152-156
LI Chun-xiang;TANG Yu-xin. Self-centering earthquake-resistance of hybrid shape memory alloy and buckling-restrained brace system[J]. Journal of Vibration and Shock, 2014, 33(10): 152-156

PDF(1407 KB)

Accesses

Citation

Detail

段落导航
相关文章

/