两种设计原则下自定心屈曲约束支撑框架的抗震性能分析

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振动与冲击 ›› 2017, Vol. 36 ›› Issue (3) : 125-131.

论文

谢钦1.2，周臻1.2，王维影1.2，孟少平1.2

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Aseismic performance analysis for braced frame systems with self-centering buckling-restrained braces with two different design criteria

XIE Qin1,2,ZHOU Zhen1,2,WANG Weiying1,2,MENG Shaoping1,2

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文章历史 +

摘要

基于9层支撑抗弯钢框架和支撑铰接钢框架，分别采用与屈曲约束支撑(BRB)的等强原则和等核心板面积原则设计自定心屈曲约束支撑(SC-BRB)框架，并对建立的6个支撑框架模型进行10条地震波下的非线性时程分析，结果表明：与BRB框架相比，SC-BRB能有效控制结构的残余变形；因为支撑铰接钢框架由地震引起的主体结构损伤较支撑抗弯钢框架小，所以结构的自定心效果也更好；基于等强原则的SC-BRB框架由于支撑刚度较小，因此其结构层加速度和支撑轴力小于按等核心板面积原则设计的SC-BRB框架；基于等核心板面积原则的SC-BRB框架凭借支撑较强的耗能能力，其层间位移角的控制要优于按等强原则设计的SC-BRB框架，且其较大的预张力和预拉杆截面面积也更利于提高结构的自定心效果和限制薄弱层的出现。

Abstract

Based on a nine-story moment-resisting braced steel frame and a nonmoment-resisting braced steel frame, a self-centering buckling-restrained brace (SC-BRB) frame was designed with the equivalent strength criterion and the equivalent core plate area criterion, respectively. The nonlinear time history analyses were conducted for six braced frame models under ten different seismic waves. The results demonstrated that compared to a BRB frame, a SC-BRB frame has a stronger capacity of restraining its residual deformation; since the structure damage caused by earthquakes of the nonmoment-resisting braced steel frame is smaller than that of the moment-resisting braced steel frame, the former exhibits a better self-centering performance; the floor acceleration and axial bracing force of the SC-BRB frame designed with the equivalent strength criterion are smaller than those of the SC-BRB frame designed with the equivalent core plate area criterion because the brace stiffness of the former is smaller; compared to the SC-BRB frame designed with the equivalent strength criterion, the SC-BRB frame designed with the equivalent core plate area criterion has a stronger capacity of restraining story drifts due to its stronger capacity of energy dissipation; furthermore, the bigger pretension force and cross-section area of braces are helpful to the improvement of the frame's self-centering performance and the restrainment of weak stories.

导出引用

谢钦1.2，周臻1.2，王维影1.2，孟少平1.2. 两种设计原则下自定心屈曲约束支撑框架的抗震性能分析[J]. 振动与冲击, 2017, 36(3): 125-131

XIE Qin1,2,ZHOU Zhen1,2,WANG Weiying1,2,MENG Shaoping1,2. Aseismic performance analysis for braced frame systems with self-centering buckling-restrained braces with two different design criteria[J]. Journal of Vibration and Shock, 2017, 36(3): 125-131

参考文献

[1] 李国强, 胡宝琳, 孙飞飞, 等. 国产TJI型屈曲约束支撑的研制与试验[J]. 同济大学学报(自然科学版), 2011, 39(5): 631-636.
Li Guoqiang, Hu Baolin, Sun Feifei, et al. Development and experimental study on domestic TJI buckling-restrained brace [J]. Journal of Tongji University (Natural Science Editor), 2011, 39(5): 631-636.
[2] 邓雪松, 陈真, 周云. 开孔三重钢管防屈曲耗能支撑影响因素分析[J]. 振动与冲击, 2012, 31(2): 101-108.
Deng Xuesong, Chen Zhen, Zhou Yun. Analysis of influence factors on behavior of a buckling-restrained brace with perforated triple-steel tube [J]. Journal of Vibration and Shock, 2012, 31(2): 101-108.
[3] 吴克川, 陶忠, 韦光兰, 等. 地震作用下防屈曲支撑减震结构附加有效阻尼比计算及变化规律研究[J].振动与冲击, 2016,35(2): 146-152.
Wu Kechuan, Tao Zhong, Wei Guanglan, et al. Calculation of the additional damping ratio of buckling-restrained brace structure and its variation under earthquake[J]. Journal of Vibration and Shock, 2016, 35(2): 146-152.
[4] Sabelli R, Mahin S A., Chang C. Seismic demands on steel braced-frame buildings with buckling-restrained braces [J]. Engineering Structures, 2003, 25(2003): 655–666.
[5] Christopoulos C, Tremblay R, Kim H-J, et al. Self-centering energy dissipative bracing system for the seismic resistance of structure: development and validation [J]. Journal of Structural Engineering, 2008, 134(1): 96-97.
[6] Miller D J, Fahnestock L A, Eatherton M R. Development and experimental validation of a nickel-titanium shape memory alloy self-centering buckling-restrained brace [J]. Engineering Structures, 2012, 40(2012): 288-298.
[7] 刘璐, 吴斌, 李伟等. 一种新型自复位防屈曲支撑的拟静力试验[J]. 东南大学学报, 2012, 42(3): 536-544
Liu Lu, Wu Bin, Li Wei, et al. Cyclic tests of novel self-centering buckling-restrained brace [J]. Journal of Southeast University (Natural Science Edition), 2012, 42(3):536-541.
[8] Zhou Z, He X T, Wu, J, et al. Development of a novel self-centering buckling-restrained braces with BFRP composite tendons [J]. Steel and Composite Structures, 2014, 16(5): 491–506.
[9] Zhou Z, Xie Q, Lei X C, et al. Experimental investigation of the hysteretic performance of dual-tube self-centering buckling-restrained braces with composite tendons [J]. J Compos Constr, 2015; 10.1061/(ASCE)CC.1943-5614.0000565, 04015011.
[10] Tremblay R, Lacerte M, Christopoulos C. Seismic response of multistorey buildings with self-centering energy dissipative steel braces [J]. Journal of Structural Engineering, 2008;134(1):108–120.
[11] Ohtori Y, Christenson R E, Spencer B F. Benchmark Control Problems for Seismically Excited Nonlinear Buildings [J]. Journal of Engineering Mechanics. 2004, 130(4): 366-385.
[12] 贾明明. 抑制屈曲支撑(BRB)及采用BRB的钢框架抗震性能分析与设计[D]. 哈尔滨: 哈尔滨工业大学, 2008.
Jia Mingming. Seismic performance anslysis and design of buckling-restrained brace (BRB) and the steel frame with BRB [D]. Harbin: Harbin Institute of Technology, 2008.
[13] 赵林. 屈曲约束支撑框架设计及抗震性能研究[D]. 西安: 西安建筑科技大学, 2011.
Zhao Lin. The design and seismic performance analysis of buckling restrained braced steel frame [D]. Xi' an: Xi' an University of Architecture & Technology，2011.
[14] Erochko J A. Improvements to the Design and Use of Post-Tensioned Self-Centering Energy-Dissipative(SCED) Braces [D]. Toronto, Canada, University of Toronto, 2013.
[15] ASCE/SEI 7-10. Minimum design loads for buildings and other structures [S]. Reston: ASCE, 2010.
[16] 曲哲. 摇摆墙-框架结构抗震损伤机制控制及设计方法研究[D]. 北京: 清华大学, 2010.
Qu Zhe. Study on seimic damage mechanism control and design of rocking wall-frame structures [D]. Peking, Tsinghua University, 2010.