层间铰连抗侧力桁架的抗震性能计算研究

任彧; 吴雨君

doi:10.13204/j.gyjzG21012404

层间铰连抗侧力桁架的抗震性能计算研究

doi: 10.13204/j.gyjzG21012404

任彧,
吴雨君

福建建工装配式建筑研究院有限公司, 福州 350001

基金项目:

福建省科技重大专项(2019HZ07011)。

详细信息

作者简介:
任彧,男,1974年出生,教授级高级工程师。电子信箱:fzrenyu@qq.com

计量
- 文章访问数: 29
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- PDF下载量: 6
- 被引次数: 0
出版历程
- 收稿日期: 2021-01-24

Seismic Behavior of the Inter-Story Hinged Lateral Resistance Braced Frame

REN Yu,
WU Yujun

Fujian Construction Engineering Prefabricated Building Research Institute Co., Ltd., Fuzhou 350001, China

摘要

摘要: 基于框架发生侧移时呈现的杆件挠曲特征,提出一种可对框架层间变形进行有效约束的层间铰连抗侧力桁架体系(RBF体系)。采用SAP 2000程序,对RBF体系在多遇地震下的内力与变形进行分析,使用Pushover方法对罕遇地震下的屈服机制进行研究。结果显示,RBF体系具有显著的刚度增强效应,可以实现结构刚度可控退化,保证结构的抗震延性。RBF体系不会改变原结构竖向力的传递路径,还可适用于对已有建筑进行抗震加固。
- 抗侧力体系 /
- R-Brace抗侧子单元 /
- 刚度增强效应 /
- 抗震延性
Abstract: Based on the deflection of structural components occurring at the lateral deformation of moment frames, the author proposed a new lateral resistance RBF (R-Brace Frame) system, which is capable of effectively limiting the drift of tall buildings. To evaluate internal force distribution and deformation of the RBF system, FEM program SAP2000 was used. Pushover method and capacity spectrum method were used to assess yielding mechanism of seismic performance of the structure under rare earthquake. The findings revealed that the RBF system had a major impact on improving the structure's lateral stiffness. The stiffness deterioration of the RBF system is controllable, and the seismic ductility of the structure can be guaranteed by the RBF system. The RBF system would not alter the direction of propagation of the vertical force of the initial structure. It is ideal for existing buildings for seismic retrofitting.
- lateral-force resisting system /
- R-Brace lateral-force resisting sub-unit /
- effect on enhancing the stiffness /
- seismic ductility

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参考文献(8)

[1]	DEHGHANI S,FATHIZADEH S F,YANG T Y, et al. Performance evaluation of curved damper truss moment frames designed using equivalent energy design procedure[J/OL].Engineering Structures,2021,226[2021-01-07].https://doi.org/10.1016/j.engstruct.2020.111363.
[2]	FATHIZADEH S. DEHGHANI F,S, YANG T Y, et al. Trade-off Pareto optimum design of an innovative curved damper truss moment frame considering structural and non-structural objectives[J]. Structures, 2020,28: 1338-1353.
[3]	FARAMARZI S, TAGHIKHANY M T. Direct performance-based seismic design of strongback steel braced systems[J]. Structures, 2020,28: 482-495.
[4]	LAI J W, MAHIN S A. Strongback system: a way to reduce damage concentration in steel-braced frames[J/OL]. Journal of Structural Engineering, 2015,141(9)[2021-07-09]. https://doi.org/10.1061/(ASCE)ST.1943-541X.0001198.
[5]	CHEN L, TREMBLAY R,TIRCA L. Practical seismic design procedure for steel braced frames with segmental elastic spines[J]. Journal of Constructional Steel Research, 2019,153: 395-415.
[6]	CHEN L, TREMBLAY R, TIRCA L. Determination of optimum configurations for steel-braced frames with segmental elastic spines[J/OL]. Journal of Structural Engineering, 2019,145(11)[2021-08-05]. https://doi.org/10.1061/(ASCE)ST.1943-541X.0002398.
[7]	POLLINO M,SLOVENEC D, QU B,et al. Seismic rehabilitation of concentrically braced frames using stiff rocking cores[J/OL]. Journal of Structural Engineering, 2017,143(9)[2021-01-10]. https://doi.org/10.1061/(ASCE)ST.1943-541X.0001810.
[8]	任彧, 马千帆. 竖向抗侧力构件以及带该构件的建筑物: CN210342840U[P]. 2019-09-06.