自复位磁流体阻尼支撑滞回特性及其结构抗震性能

谢行思; 张长春; 高未未

doi:10.3724/j.gyjzG23061405

自复位磁流体阻尼支撑滞回特性及其结构抗震性能

doi: 10.3724/j.gyjzG23061405

1. 北京交通大学土木建筑工程学院, 北京 100044;
2. 中冶检测认证有限公司, 北京 100088

基金项目:

国家自然科学基金项目（52208455）；中国博士后科学基金（2022M710340）。

详细信息

作者简介:
谢行思，男， 1992年出生，博士，讲师，主要从事结构抗震减震与韧性提升的研究。电子信箱： xiexingsi@bjtu.edu.cn

计量
- 文章访问数: 34
- HTML全文浏览量: 7
- PDF下载量: 0
- 被引次数: 0
出版历程
- 收稿日期: 2023-06-14
- 网络出版日期: 2024-05-29

Hysteretic Characteristics and Structural Seismic Performance of Magnetorheological Damping Self-Centering Braces

1. School of Civil Engineering, Beijing Jiaotong University, Beijing 100044, China;
2. Inspection and Certification Co., Ltd., MCC, Beijing 100088, China

摘要

摘要: 对能够同时提供库仑阻尼和黏滞阻尼的自复位磁流体阻尼支撑（Magnetorheological DampingSelf-Centering Brace，简称MR-SCB）开展动力性能试验，结果表明：支撑表现出饱满的旗形滞回曲线，复位和耗能能力出色。支撑半圈耗能随碟簧组预压力和刚度改变而产生的变化幅度不大，极限承载力随预压力和刚度的增大而增加，残余位移随预压力的增大而减小。当加载频率和位移分别为0.7 Hz和22 mm时，支撑等效黏滞阻尼比和残余位移分别为0.215和5.3 mm，相较0.3 Hz激励下分别增长了14.4%和61.1%。对布置MR-SCB的钢框架结构进行非线性模拟分析，发现MR-SCB耗散更多地震输入能量，相较传统自复位支撑可实现更好的位移控制效果。在罕遇地震时，残余位移响应离散度更低，最大结果由0.061%减小至0.049%。结构层间位移和残余位移均随支撑黏滞阻尼占比的增大而减小。
- 自复位支撑 /
- 磁流体 /
- 动力性能试验 /
- 滞回响应 /
- 支撑-框架结构 /
- 抗震性能
Abstract: A dynamic performance test was conducted on a magnetorheological damping self-centering brace (MR-SCB) that can provide both Coulomb damping and viscous damping simultaneously. The results showed that the brace exhibited a full flag-shaped hysteretic curve, with excellent recentering and energy dissipation capabilities. Its energy dissipation in half-cycle did not change significantly with the change of the pre-pressed force and stiffness of disc spring group. The ultimate bearing capacity increased with the increase of the pre-pressed force and stiffness, while the residual displacement decreased with the increase of pre-pressed force. When the loading frequency and displacement were 0.7 Hz and 22 mm, respectively, the equivalent viscous damping ratio and residual displacement of brace were 0.215 and 5.3 mm, respectively, increasing by 14.4% and 61.1% compared with those under 0.3 Hz excitation. A nonlinear simulation analysis was conducted on a steel frame structure with MR-SCBs, and it was found that compared with traditional self-centering braces, MR-SCB dissipated more input seismic energy, achieving better control effect on the displacement of frame. Under rarely occurred earthquakes, the statistical dispersion of residual displacement response was lower, and the maximum result was reduced from 0.061% to 0.049%. The interstory drift and residual displacement of the structure decreased with the increase of proportion of viscous damping force of braces.
- self-centering brace /
- magnetorheological fluid /
- dynamic performance test /
- hysteretic response /
- braced frame structure /
- seismic performance

HTML全文

参考文献(18)

[1]	葛元辉,李延昌,韩良君,等.自复位装配式结构的研究现状[J].工业建筑, 2022, 52(2):158-168.
[2]	马园泽,符宇欣,陈亮,等.加设自复位支撑冷弯型钢龙骨剪力墙滞回性能研究[J].工业建筑, 2023, 53(1):135-143 , 200.
[3]	FANG C, WANG W, QIU C X, et al. Seismic resilient steel structures:a review of research, practice, challenges and opportunities[J]. Journal of Constructional Steel Research, 2022, 191, 107172.
[4]	KAMMULA V, EROCHKO J, KWON O S, et al. Application of hybrid-simulation to fragility assessment of the telescoping self-centering energy dissipative bracing system[J]. Earthquake Engineering and Structural Dynamics, 2014, 43(6):811-830.
[5]	刘璐,吴斌.自复位防屈曲支撑钢框架减振效果分析[J].建筑结构学报, 2016, 37(4):93-101.
[6]	ZHOU Z, XIE Q, LEI X C, et al. Experimental investigation of the hysteretic performance of dual-tube self-centering bucklingrestrained braces with composite tendons[J]. Journal of Composites for Construction, 2015, 19(6), 04015011.
[7]	CHOU C C, CHEN Y C. Development of steel dual-core self-centering braces:quasi-static cyclic tests and finite element analyses[J]. Earthquake Spectra, 2015, 31(1):247-272.
[8]	XIE Q, ZHOU Z, HUANG J H, et al. Influence of tube length tolerance on seismic responses of multi-storey buildings with dualtube self-centering buckling-restrained braces[J]. Engineering Structures, 2016, 116:26-39.
[9]	OZBULUT O E, HURLEBAUS S. Application of an SMAbased hybrid control device to 20-story nonlinear benchmark building[J]. Earthquake Engineering and Structural Dynamics, 2012, 41(13):1831-1843.
[10]	张会,何斌,王春林.地震波特性对形状记忆合金自复位支撑框架响应影响[J].工业建筑, 2019, 49(12):177-182.
[11]	ZHU S Y, ZHANG Y F. Seismic analysis of concentrically braced frame system with self-centering friction damping braces[J]. Journal of Structural Engineering, 2008, 134(1):121-131.
[12]	EATHERTON M R, FAHNESTOCK L A, MILLER D J. Computational study of self-centering buckling-restrained braced frame seismic performance[J]. Earthquake Engineering and Structural Dynamics, 2014, 43(13):1897-1914.
[13]	DONG H H, DU X L, HAN Q, et al. Performance of an innovative self-centering buckling restrained brace for mitigating seismic responses of bridge structures with double-column piers[J]. Engineering Structures, 2017, 148:47-62.
[14]	PING Y W, FANG C, SHI F, et al. Experimental and numerical studies on SMA-viscoelastic hybrid self-centering braces[J]. Smart Materials and Structures, 2022, 31(9), 095048.
[15]	XU L H, FAN X W, LI Z X. Development and experimental verification of a pre-pressed spring self-centering energy dissipation brace[J]. Engineering Structures, 2016, 127:49-61.
[16]	WANG J S, GUO T, SONG L L, et al. Performance-based seismic design of RC moment resisting frames with friction-damped self-centering tension braces[J]. Journal of Earthquake Engineering, 2022, 26(4):1723-1742.
[17]	徐龙河,王坤鹏,樊晓伟.具有复位功能的阻尼耗能支撑设计与滞回性能研究[J].天津大学学报(自然科学与工程技术版), 2017, 50(9):907-914.
[18]	谢行思.自复位支撑-高层韧性钢结构抗震性能与设计方法[D].北京:北京交通大学, 2021.