Seismic Performance Analysis of Rocking Wall Frame Structure with Bucking-Restrained Braces in Base
FENG Yu-long 1 WU Jing 1 MENG Shao-ping1 WANG Qiang 1,2 FU Kang 1
1. School of Civil Engineering, Southeast University, Nanjing 210096；
2. Hong Kong Hua Yi Design Consultants (Shenzhen) LTD. Nanjing Branch, Nanjing 210037
Abstract：Based on the damage concentrated model, a rocking wall frame (RWF) structure system with bucking-restrained braces (BRBs) in base is put forward to reduce the displacement response of RWF under a strong earthquake and mitigate the damage concentration effect of buckling-restrained braced frame (BRBF). Taking a 9-storey steel frame as the benchmark model, pushover analysis and dynamic time history analysis were conducted to comparatively study seismic performance of the proposed structure system. The results show that: before BRBs yield, this structure performs similarly to the shear wall frame (SWF), in which additional lateral stiffness is provided by BRBs and transferred by the rocking wall; after BRBs yield, the structure tends to rock, in which the rocking wall control the lateral mode and BRBs consume seismic energy, leading to full use of the seismic capacity of each part.
[1] Housner G W. The behavior of inverted pendulum structures during earthquakes [J]. Bulletin of the seismological society of America, 1963, 53(2): 403-417.
[2] Uang C M, Nakashima M, Tsai K C. Research and application of buckling-restrained braced frames [J]. International Journal of Steel Structures, 2004, 4(4): 301-313.
[3] 周颖, 吕西林. 摇摆结构及自复位结构研究综述[J]. 建筑结构学报, 2011, 32(9): 1-10.
ZHOU Ying, LU Xi-lin. State-of-the-art on rocking and self-centering structures [J]. Journal of Building Structures, 2011, 32(9): 1-10.
[4] 蒋欢军, 刘其舟. 可恢复功能剪力墙结构研究进展[J]. 振动与冲击, 2015, 34(7): 51-58.
JIANG Huan-jun, LIU Qi-zhou State-of-the-art of the research advances on resilient shear walls [J]. Journal of vibration and shock, 2015, 34(7): 51-58.
[5] 孙逊,崔永平,黄明,等. 人民日报社报刊综合业务楼结构设计[J]. 建筑结构. 2012, 42(9): 52-55.
Sun Xun, Cui Yong-ping, Huang Ming, et al. Structural design of the People's Daily office building [J]. Building Structure . 2012, 42(9): 52-55.
[6] Jones P, Zareian F. Seismic response of a 40-storey buckling-restrained braced frame designed for the Los Angeles region [J]. The Structural Design of Tall and Special Buildings, 2013, 22(3): 291-299.
[7] 曹海韵, 潘鹏, 叶列平. 基于推覆分析混凝土框架摇摆墙结构抗震性能研究[J]. 振动与冲击, 2011, 30(11): 240-244.
CAO Hai-yun, PAN Peng, YE Lie-ping. Pushover analysis of RC frame rocking wall structure [J]. Journal of vibration and shock, 2011, 30(11): 240-244.
[8] Qu Z, Wada A, Motoyui S, et al. Pin-supported walls for enhancing the seismic performance of building structures [J]. Earthquake Engineering & Structural Dynamics, 2012, 41(14): 2075-2091.
[9] Sabelli R, Mahin S, Chang C. Seismic demands on steel braced frame buildings with buckling-restrained braces [J]. Engineering Structures, 2003, 25(5): 655-666.
[10] Tremblay R, Lacerte M, Christopoulos C. Seismic response of multistory 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 Jr B F, et al. Benchmark control problems for seismically excited nonlinear buildings [J]. Journal of Engineering Mechanics, 2004, 130(4): 366-385.
[12] 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: 41-43
