摇摆防屈曲支撑钢框架抗震性能分析
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北京建筑大学 工程结构与新材料北京市高等学校工程研究中心,北京 100044

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北京未来城市设计高精尖创新中心(UDC2016030200)和QN03青年教师卓越支持计划(X18099)


SIMULATION ON SEISMIC PERFORMANCE OF THE ROCKING BUCKLING-RESTRAINED BRACED STEEL FRAME
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Beijing University of Civil Engineering and Architecture, Beijing Higher Institution Engineering Research Center of Structural Engineering and New Materials, Beijing 100044, China

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The project supported by the Beijing Advanced Innovation Center for Future Design (UDC2016030200)and QN03 Young Teacher Excellence Support Program(X18099)

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    摘要:

    基于防屈曲支撑钢框架(BRBSF)和摇摆防屈曲支撑钢框架(RBRBSF)拟静力试验,建立BRBSF和RBRBSF的有限元模型,利用OpenSees有限元软件对试验框架中采用的梁端削弱截面(RBS)进行分析,研究RBS对BRBSF和RBRBSF性能影响,并基于有限元模型进一步分析BRB参数对RBRBSF的影响.研究结果表明,梁端设置RBS可减小BRBSF梁柱节点弯矩,实现塑性铰外移,但对RBRBSF梁柱节点弯矩影响较小,BRB参数的改变对RBRBSF屈服荷载和承载能力有一定影响,但对框架柱轴力影响较小.

    Abstract:

    Based on the quasi-static tests of the buckling-restrained steel frame (BRBSF) and the rocking buckling-restrained steel frame (RBRBSF), the finite element models of BRBSF and RBRBSF are established, using opensees to analyze the reduced beam section (RBS) in the test frame, studying the influence of RBS on the performance of BRBSF and RBRBSF, and further studying the influence of BRB parameters on the RBRBSF based on the finite element model. The results show that the setting of RBS at the end of the beam can reduce the bending moment of BRBSF beam-column joints and realize the plastic hinge external movement, but it has little effect on the bending moment of RBRBSF beam-column joints, and the change of BRB parameters has a certain influence on the RBRBSF yield load and bearing capacity, but has little effect on the axial force in the column.

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孙祚帅,张国伟,丁梦婷.摇摆防屈曲支撑钢框架抗震性能分析[J].动力学与控制学报,2020,18(5):40~45; Sun Zuoshuai, Zhang Guowei, Ding Mengting. SIMULATION ON SEISMIC PERFORMANCE OF THE ROCKING BUCKLING-RESTRAINED BRACED STEEL FRAME[J]. Journal of Dynamics and Control,2020,18(5):40-45.

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  • 收稿日期:2019-08-25
  • 最后修改日期:2019-11-12
  • 录用日期:2020-09-29
  • 在线发布日期: 2020-11-24
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