Study on structural influencing coefficient of eccentrically braced steelframe with replaceable energy dissipation links based on IDA method

Abstract

Abstract: To investigate the effects of cross-section size, beam length, number of stiffeners, and number of floors on the structural influence coefficient (R) and the displacement amplification factor (C_d) of eccentrically braced frames with replaceable double-channel shear links, incremental dynamic analysis (IDA) was conducted on 18 models with varying parameters using the OpenSees finite element software. The structural influence coefficients and displacement amplification factors were calculated for each respective model. The results indicate that the seismic performance and deformation capacity of the eccentrically braced frame with replaceable double-channel shear links can be enhanced through the judicious design of the shear link structural parameters. Additionally, proposed values of R and C_d are provided to serve as a reference for further studies on the structural influence coefficient of eccentrically braced frames.

Key words: replaceable double-channel shear links, incremental dynamic analysis, structural influencing coefficient

CLC Number:

TU391

YIN Zhan-zhong, LI Xin-wei, FENG Da-zhe. Study on structural influencing coefficient of eccentrically braced steelframe with replaceable energy dissipation links based on IDA method[J]. Journal of Lanzhou University of Technology, 2024, 50(5): 133-138.

References

[1] FUJIMOTO M,AOYAGI T,UKAI K,et al.Structural characteristics of eccentric k-braced frames[J].Architectural Institute of Japan,1972(195):39-49.
[2] TANABASHI R,NANETA K,ISHIDA T.On the rigidity and ductility of steel bracing assemblage[C].Proc. 5th World Conference of Earthquake Engineering,1974(1):834-840.
[3] 任亚歌.偏心支撑钢框架可替换耗能梁段的抗震性能研究[D].兰州:兰州理工大学,2016.
[4] 王立功.带可替换耗能梁段的偏心防屈曲支撑钢框架受力性能研究[D].兰州:兰州理工大学,2017.
[5] NEWMARK N M,HALL W J.Earthquake spectra and design[M].Earthquake Engineering Research Institute,1982.
[6] 翟长海,谢礼立.考虑设计地震分组的强度折减系数的研究[J].地震学报,2006,28(3):284-294.
[7] 杨文侠.Y形偏心支撑钢框架的结构影响系数[D].上海:上海交通大学,2011.
[8] 杨文侠,顾强,宋振森,等.基于IDA的Y形偏心支撑钢框架地震反应折减系数和超强系数[J].西安建筑科技大学学报(自然科学版),2011,43(6):795-802.
[9] 杨文侠,顾强,宋振森,等.Y形偏心支撑钢框架的地震反应折减系数和超强系数[J].工程力学,2012,29(10):129-136.
[10] 程倩倩,苏明周,连鸣.带可更换剪切型耗能梁段高强钢组合框筒的结构影响系数研究[J].工程力学,2020,37(2):145-158.
[11] 蔡克铨,黄彦智,翁崇兴.双管式挫屈束制(屈曲约束)支撑之耐震行为与应用[J].建筑钢结构进展,2005,7(3):1-8.
[12] 殷占忠,王秀丽,李晓东.带接触环的双钢管约束屈曲支撑有限元分析[J].兰州理工大学学报,2008,34(5):122-126.
[13] 殷占忠,陈伟,陈生林,等.改进型双钢管约束屈曲支撑试验研究[J].建筑结构学报,2014,35(9):90-97.
[14] LEVENBERG K.A method for the solution of certain non-linear problems in least squares[J].Quarterly of Applied Mathematics,1944,2(2):164-168.