Seismic responses of multistory buildings with self-centering buckling-restrained braces: Influence of the pretension force

2021 ◽  
Vol 238 ◽  
pp. 112249
Author(s):  
Yuan Qing ◽  
Chun-Lin Wang ◽  
Zhen Zhou ◽  
Bin Zeng
Keyword(s):  
Seismic Responses ◽  
Multistory Buildings ◽  
Buckling Restrained Braces

scholarly journals Effect of Buckling Restrained Braces Locations on Seismic Responses of High-Rise RC Core Wall Buildings

2016 ◽  
Vol 2016 ◽  
pp. 1-15 ◽  
Author(s):  
Munir Ahmed ◽  
Shahzadi Tayyaba ◽  
Muhammad Waseem Ashraf
Keyword(s):  
Plastic Hinge ◽  
Bending Moment ◽  
Structural Components ◽  
Seismic Responses ◽  
Coupling Beams ◽  
High Rise ◽  
The Core ◽  
Energy Demands ◽  
Conventional Design ◽  
Buckling Restrained Braces

Conventionally, a flexural plastic hinge is designed and detailed at the core wall base and coupling beams ends to control the seismic responses. This strategy is based on allowing the damage to be concentrated on main structural components. To avoid such damage, an alternative strategy using energy dissipating devices (EDDs) such as buckling restrained braces (BRBs) is being studied and implemented nowadays. In this study, effect of BRBs locations on forty- (40-) story high-rise RC core wall case study building has been studied in detail using Nonlinear Response History Analysis (NLRHA) for seven spectrally matched ground motions. BRBs have been installed at critical locations identified with respect to the maximum DBE elastic modal racking shear deformation demands and force (shear and moment) demands in three different options. The force, deformation, and energy demands on structural components are compared for conventional design and different options of BRBs. The comparison with conventional design shows that BRBs not only are effective for reducing shear force demand along wall height, bending moment demand at mid height, and deformation demands by 10%, 45%, and 45%, respectively, but significantly reduce the rotation and energy demands in the core wall by 90% and 250%, respectively.

Seismic Responses of a Full-Scale Steel Structure Using Multi-Curved Buckling Restrained Braces

2007 ◽  
Author(s):  
C. S. Tsai ◽  
Wen-Shin Chen ◽  
Yung-Chang Lin ◽  
Chen-Tsung Yang ◽  
Ching-Pei Tsou
Keyword(s):  
Earthquake Engineering ◽  
Ground Motions ◽  
Steel Structure ◽  
Full Scale ◽  
Experimental Results ◽  
Shaking Table ◽  
Shaking Table Tests ◽  
Seismic Responses ◽  
Buckling Restrained Brace ◽  
Buckling Restrained Braces

Since 1970’s, many types of braces have been developed without buckling under large compressive forces called the buckling restrained brace BRB, or unbonded brace. Recently, many investigators have made a lot of efforts to look into the behaviors of the buckling restrained brace under quasi-static forces, but few experimental results about shaking table tests of a structure with buckling restrained braces have been published. Therefore, in this study, a series of shaking table tests were carried out in the National Center for Research on Earthquake Engineering, and the issue is focused on observing the seismic responses of a full-scale three-story steel structure with multi-curved reinforced buckling restrained braces subjected to earthquake ground motions. Experimental results show that most column shear forces and displacements had been reduced by the RBRB devices. In addition, the absolute accelerations had also been favorably diminished during earthquakes. It can be proven that the proposed device is suitable for applications of seismic mitigation for structures.

Seismic responses of reinforced concrete frames with buckling restrained braces in zigzag configuration

2015 ◽  
Vol 105 ◽  
pp. 12-21 ◽  
Author(s):  
Zhe Qu ◽  
Shoichi Kishiki ◽  
Yusuke Maida ◽  
Hiroyasu Sakata ◽  
Akira Wada
Keyword(s):  
Reinforced Concrete ◽  
Seismic Responses ◽  
Concrete Frames ◽  
Reinforced Concrete Frames ◽  
Buckling Restrained Braces

Research on the inelastic seismic responses of shear-type multistory buildings with regular asymmetry

2001 ◽  
Vol 22 (11) ◽  
pp. 1252-1259
Author(s):  
Cai Xian-hui ◽  
Wu Rui-feng ◽  
Xu Shi-bin
Keyword(s):  
Seismic Responses ◽  
Multistory Buildings ◽  
Shear Type

Impact of Reservoir Pressure Changes on 4D Seismic Responses in Carbonates: Special Rock Physics Core Study

2007 ◽  
Author(s):  
William L. Soroka ◽  
Taha Al-Dayyani ◽  
Christian J. Strohmenger ◽  
Hafez H. Hafez ◽  
Mahfoud Salah Al-Jenaibi
Keyword(s):  
Rock Physics ◽  
Reservoir Pressure ◽  
Seismic Responses ◽  
Core Study ◽  
Pressure Changes ◽  
4D Seismic

Low-Cycle Fatigue Performance of Buckling Restrained Braces and Assessment of Cumulative Damage under Severe Earthquakes

2018 ◽  
Vol 763 ◽  
pp. 867-874
Author(s):  
Yu Shu Liu ◽  
Ke Peng Chen ◽  
Guo Qiang Li ◽  
Fei Fei Sun
Keyword(s):  
Fatigue Life ◽  
Energy Dissipation ◽  
Structural Reliability ◽  
Low Cycle Fatigue ◽  
Engineering Application ◽  
Fatigue Performance ◽  
Cycle Fatigue ◽  
Variable Amplitude ◽  
Buckling Restrained Braces ◽  
Energy Dissipation Devices

Buckling Restrained Braces (BRBs) are effective energy dissipation devices. The key advantages of BRB are its comparable tensile and compressive behavior and stable energy dissipation capacity. In this paper, low-cycle fatigue performance of domestic BRBs is obtained based on collected experimental data under constant and variable amplitude loadings. The results show that the relationship between fatigue life and strain amplitude satisfies the Mason-Coffin equation. By adopting theory of structural reliability, this paper presents several allowable fatigue life curves with different confidential levels. Besides, Palmgren-Miner method was used for calculating BRB cumulative damages. An allowable damage factor with 95% confidential level is put forward for assessing damage under variable amplitude fatigue. In addition, this paper presents an empirical criterion with rain flow algorithm, which may be used to predict the fracture of BRBs under severe earthquakes and provide theory and method for their engineering application. Finally, the conclusions of the paper were vilified through precise yet conservative prediction of the fatigue failure of BRB.

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