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一种抗震性能化设计方法及在防屈曲支撑钢框架结构中的应用

邱灿星 杜修力

邱灿星, 杜修力. 一种抗震性能化设计方法及在防屈曲支撑钢框架结构中的应用[J]. 工程力学, 2022, 39(11): 63-72. doi: 10.6052/j.issn.1000-4750.2021.06.0463
引用本文: 邱灿星, 杜修力. 一种抗震性能化设计方法及在防屈曲支撑钢框架结构中的应用[J]. 工程力学, 2022, 39(11): 63-72. doi: 10.6052/j.issn.1000-4750.2021.06.0463
QIU Can-xing, DU Xiu-li. A NOVEL PERFORMANCE-BASED SEISMIC DESIGN METHOD AND ITS APPLICATION IN BRB STEEL FRAMES[J]. Engineering Mechanics, 2022, 39(11): 63-72. doi: 10.6052/j.issn.1000-4750.2021.06.0463
Citation: QIU Can-xing, DU Xiu-li. A NOVEL PERFORMANCE-BASED SEISMIC DESIGN METHOD AND ITS APPLICATION IN BRB STEEL FRAMES[J]. Engineering Mechanics, 2022, 39(11): 63-72. doi: 10.6052/j.issn.1000-4750.2021.06.0463

一种抗震性能化设计方法及在防屈曲支撑钢框架结构中的应用

doi: 10.6052/j.issn.1000-4750.2021.06.0463
基金项目: 国家自然科学基金项目(51808317,52178267);国家自然科学基金创新研究群体项目(51421005);教育部创新团队项目(IRT13044)
详细信息
    作者简介:

    杜修力(1962−),男,四川人,教授,博士,主要从事地震工程方面的研究(E-mail: duxiuli@bjut.edu.cn)

    通讯作者:

    邱灿星(1987−),男,江西人,教授,博士,主要从事地震工程方面的研究(E-mail: qiucanxing@bjut.edu.cn)

  • 中图分类号: TU318+.1

A NOVEL PERFORMANCE-BASED SEISMIC DESIGN METHOD AND ITS APPLICATION IN BRB STEEL FRAMES

  • 摘要: 该文围绕防屈曲支撑钢框架结构提出了一种新的抗震性能化设计方法。在选取性能目标时,为了兼顾建筑中结构主体和非结构成分的地震安全,该方法选取了峰值层间位移角、峰值楼面加速度和残余层间位移角共同作为性能目标。以等效单自由度体系的弹塑性时程分析计算结果进行参数分析,掌握防屈曲支撑钢框架结构随基本周期和强度折减系数变化的地震响应规律;根据结构动力学理论将单自由度体系的计算结果推广至多自由度体系;基于此发展出一种新的抗震性能化设计方法。为演示和论证该方法的有效性,该文选取了一栋六层防屈曲支撑钢框架结构的基准模型进行抗震设计,并开展一组地震动作用下的弹塑性时程分析。抗震性能评估的结果表明:由该方法设计的结构能够较好地同时满足多个设计目标的要求。该文的设计方法对于其他类型结构的抗震设计也具有一定的借鉴价值。
  • 图  1  BRB的示意图

    Figure  1.  Schematic view of BRB

    图  2  单自由度体系

    Figure  2.  SDOF system

    图  3  地震动输入

    Figure  3.  Ground motion input

    图  4  SDOF体系的计算结果平均值

    Figure  4.  Mean demands of the SDOF systems

    图  5  BRB框架

    Figure  5.  BRB frame

    图  6  一阶模态推覆分析结果

    Figure  6.  First-mode pushover result

    图  7  地震响应的概率分布

    Figure  7.  Probability distribution of the seismic response indexes

    图  8  地震响应沿楼层高度的分布

    Figure  8.  Height-wise seismic responses

    表  1  BRB的力学性能

    Table  1.   Mechanical properties of BRB

    楼层力学性能
    屈服强度/kN轴向刚度/(kN/mm)
    6246.436.4
    5386.457.1
    4487.872.1
    3561.182.9
    2610.790.2
    1754.494.4
    下载: 导出CSV
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出版历程
  • 收稿日期:  2021-06-18
  • 录用日期:  2021-12-10
  • 修回日期:  2021-11-18
  • 网络出版日期:  2021-12-10
  • 刊出日期:  2022-11-01

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