[1]谢钦,周臻,孟少平,等.SMA预拉杆式自定心屈曲约束支撑的滞回性能分析[J].东南大学学报(自然科学版),2014,44(4):799-804.[doi:10.3969/j.issn.1001-0505.2014.04.021]
 Xie Qin,Zhou Zhen,Meng Shaoping,et al.Hysteretic performance analysis of self-centering buckling-restrained braces with pretensioned SMA tendons[J].Journal of Southeast University (Natural Science Edition),2014,44(4):799-804.[doi:10.3969/j.issn.1001-0505.2014.04.021]
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SMA预拉杆式自定心屈曲约束支撑的滞回性能分析()
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《东南大学学报(自然科学版)》[ISSN:1001-0505/CN:32-1178/N]

卷:
44
期数:
2014年第4期
页码:
799-804
栏目:
土木工程
出版日期:
2014-07-16

文章信息/Info

Title:
Hysteretic performance analysis of self-centering buckling-restrained braces with pretensioned SMA tendons
作者:
谢钦周臻孟少平王维影
东南大学混凝土及预应力混凝土结构教育部重点实验室, 南京 210096
Author(s):
Xie Qin Zhou Zhen Meng Shaoping Wang Weiying
Key Laboratory of Concrete and Prestressed Concrete Structures of Ministry of Education, Southeast University, Nanjing 210096, China
关键词:
屈曲约束支撑 自定心 SMA 流变模型 滞回性能
Keywords:
buckling-restrained brace self-centering shape memory alloy(SMA) rheological model hysteretic performance
分类号:
TU352.1
DOI:
10.3969/j.issn.1001-0505.2014.04.021
摘要:
基于屈曲约束支撑(BRB)的流变模型和形状记忆合金(SMA)的分段线性本构模型,建立了可用于分析SMA预拉杆式自定心屈曲约束支撑(SMA-SC-BRB)滞回性能的流变模型和控制方程.然后,运用流变分析方法对一种新型的SMA-SC-BRB构件进行数值模拟,通过对比可知基于流变模型的模拟结果与文献试验结果吻合较好.最后,利用该流变模型对SMA-SC-BRB的滞回性能进行参数分析.结果表明:当初始预张力超过奥氏体相变的结束应力时,其变化对支撑的滞回性能影响较小;增加SMA杆的截面面积,能同时提高支撑的自定心效果和耗能能力;随着核心板截面面积的增加,支撑耗能能力增强,但自定心能力减弱;提高SMA杆的温度能有效提升支撑的自定心能力.
Abstract:
Based on the rheological model of buckling-restrained brace(BRB)and the piecewise linear constitutive relation of shape memory alloy(SMA), a rheological model and the corresponding control equation are established to analyze the hysteretic performance of self-centering buckling-restrained braces with pretensioned SMA tendons(SMA-SC-BRB). Then, the numerical simulation for a novel type of SMA-SC-BRB specimen is carried out by the rheological analysis method. Comparison shows that the simulation results of the proposed rheological model matches the experimental results in the paper well. Finally, the parametric analysis of the hysteretic performance of SMA-SC-BRB is studied based on the proposed theological model. The results show that when the initial prestressing force exceeds the completion force of austenite phase transformation, its variation has small influence on the hysteretic performance of the brace. The increase of the cross section area of the SMA tendon can improve the self-centering effect and energy dissipation capacity. With the increase of the area of the core plate, the energy dissipation capacity increases while the self-centering capacity decreases. The increase of the temperature of the tendon can effectively increase the self-centering capacity of the brace.

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备注/Memo

备注/Memo:
收稿日期: 2014-01-14.
作者简介: 谢钦(1988—),男,博士生;周臻(联系人),男,博士,副教授,博士生导师,seuhj@163.com.
基金项目: 国家自然科学基金资助项目(51208095)、中央高校基本科研业务费专项资金资助项目(3205003203)、江苏省“青蓝工程”资助项目.
引用本文: 谢钦,周臻,孟少平,等.SMA预拉杆式自定心屈曲约束支撑的滞回性能分析[J].东南大学学报:自然科学版,2014,44(4):799-804. [doi:10.3969/j.issn.1001-0505.2014.04.021]
更新日期/Last Update: 2014-07-20