Comparison of seismic design provisions for buckling restrained braced frames in Canada, United States, Chile, and New Zealand

Structures ◽  
2016 ◽  
Vol 8 ◽  
pp. 183-196 ◽  
Author(s):  
R. Tremblay ◽  
M. Dehghani ◽  
L. Fahnestock ◽  
R. Herrera ◽  
M. Canales ◽  
...  
Keyword(s):  
United States ◽  
New Zealand ◽  
Seismic Design ◽  
Braced Frames ◽  
Buckling Restrained Braced Frames

Drift-based seismic design procedure for Buckling Restrained Braced Frames

Structures ◽  
2021 ◽  
Vol 30 ◽  
pp. 62-74
Author(s):  
Seyed Amin Mousavi ◽  
Seyed Mehdi Zahrai ◽  
Ali Akhlagh Pasand
Keyword(s):  
Seismic Design ◽  
Design Procedure ◽  
Braced Frames ◽  
Buckling Restrained Braced Frames

Seismic design and analysis of precast concrete buckling-restrained braced frames

PCI Journal ◽  
2021 ◽  
Author(s):  
Shane Oh ◽  
Yahya Kurama ◽  
Jon Mohle ◽  
Brandt Saxey
Keyword(s):  
Seismic Design ◽  
Precast Concrete ◽  
Braced Frames ◽  
Buckling Restrained Braced Frames

scholarly journals On the European Norms of Design of Buckling Restrained Braced Frames

2017 ◽  
Vol 11 (1) ◽  
pp. 513-530 ◽  
Author(s):  
Ádám Zsarnóczay ◽  
Tamás Balogh ◽  
László Gergely Vigh
Keyword(s):  
Seismic Design ◽  
Structural Reliability ◽  
Design Procedure ◽  
Material Model ◽  
Eurocode 8 ◽  
Braced Frames ◽  
Reliability Indices ◽  
Buckling Restrained Braces ◽  
Buckling Restrained Braced Frames ◽  
Ground Motion Records

The application of buckling restrained braced frames is hindered in Europe by the absence of a standardized design procedure in Eurocode 8, the European seismic design standard. The presented research aims to develop a robust design procedure for buckling restrained braced frames. A design procedure is proposed by the authors. Its performance has been evaluated for buckling restrained braced frames with two-bay X-brace type brace configurations using a state-of-the-art methodology based on the recommendations in the FEMA P695 document. A special numerical material model was developed within the scope of this research to represent the behavior of buckling restrained braces more appropriately in a numerical environment. A total of 24 archetype designs were prepared and their nonlinear dynamic response was calculated using real ground motion records in incremental dynamic analyses. Evaluation of archetype collapse probabilities confirms that the proposed design procedure can utilize the advantageous behavior of buckling restrained braces. Resulting reliability indices suggest a need for additional regulations in the Eurocodes that introduce reasonable structural reliability index limits for seismic design.

scholarly journals Evidence collected for peer review of buckling-restrained braced frames in New Zealand

2021 ◽  
Vol 54 (3) ◽  
pp. 197-210
Author(s):  
Dan Court-Patience ◽  
Mark Garnich
Keyword(s):  
New Zealand ◽  
Peer Review ◽  
Guidance Document ◽  
Braced Frames ◽  
Premature Failure ◽  
Regulatory Standards ◽  
Global Buckling ◽  
Buckling Restrained Braced Frames ◽  
Strength And Stiffness ◽  
Bracing System

Buckling-restrained braces (BRBs) form a bracing system that provides lateral strength and stiffness to a building. These systems have been shown to provide larger energy dissipation in severe earthquake events compared to concentrically and eccentrically braced frames (CBFs and EBFs). However, unlike CBFs and EBFs there is no guidance document or specific instructions in regulatory standards for the design of buckling-restrained braced frames (BRBFs) in New Zealand. This makes it difficult for structural engineers to be aware of all the strength and stability considerations required for the safe design of BRBFs. Currently, structural designs that include BRBFs require a peer-review to gain building compliance. The American standard ANSI/AISC 341-16 is the adopted document used in New Zealand for guidance in how to collect evidence showing a BRBF system will perform as intended. However, as ANSI/AISC 341-16 is not a governing document in New Zealand, instructions within the document are not enforced and can be made to fit within the constraints of a building project. By way of example, this paper presents the experimental test process and results acquired from pre-qualification testing of three different commercially available BRB architypes. Of the three BRB designs investigated, one failed prematurely due to global buckling. A manufacturing error was the likely cause of this premature failure. This failure highlights the need for strict quality control during fabrication. All remaining BRBs performed well, meeting the acceptance criteria set out in ANSI/AISC 341-16. Positive pre-qualification results meant the BRBs were installed in medium to high-rise buildings throughout New Zealand. The importance of sub-assemblage testing to assess the performance of a BRB and its frame components is also discussed. Finally, the capability of high fidelity modelling to supplemental physical testing is also presented.

Seismic design of buckling-restrained braced frames based on a modified energy-balance concept

2006 ◽  
Vol 33 (10) ◽  
pp. 1251-1260 ◽  
Author(s):  
Hyunhoon Choi ◽  
Jinkoo Kim ◽  
Lan Chung
Keyword(s):  
Energy Balance ◽  
Seismic Design ◽  
Response Spectrum ◽  
Design Procedure ◽  
Time History ◽  
Energy Performance ◽  
Braced Frames ◽  
Plastic Energy ◽  
Buckling Restrained Braces ◽  
Buckling Restrained Braced Frames

The conventional energy-based seismic design procedure based on the energy-balance concept was revised for performance-based design of buckling-restrained braced frames. The errors associated with the energy-balance concept were identified and were corrected by implementing proper correction factors. The design process began with the computation of the input energy from a response spectrum. Then the plastic energy computed based on the modified energy-balance concept was distributed to each story and the cross-sectional area of each brace was computed in such a way that all the plastic energy was dissipated by the brace. The proposed procedure was applied to the design of three-, six-, and eight-story steel frames with buckling-restrained braces for three different performance targets. According to the time-history analysis results, the mean values of the top story displacements of the model structures, designed in accordance with the proposed procedure, corresponded well with the given target displacements. Key words: energy-balance concept, buckling-restrained braces, hysteretic energy, performance-based seismic design.

Seismic design and test of gusset connections for buckling-restrained braced frames

2013 ◽  
Vol 43 (4) ◽  
pp. 565-587 ◽  
Author(s):  
Pao-Chun Lin ◽  
Keh-Chyuan Tsai ◽  
An-Chien Wu ◽  
Ming-Chieh Chuang
Keyword(s):  
Seismic Design ◽  
Braced Frames ◽  
Buckling Restrained Braced Frames

scholarly journals Comparison of recent New Zealand and United States seismic design provisions for reinforced concrete beam-column joints and test results from four units designed according to the New Zealand code

1983 ◽  
Vol 16 (1) ◽  
pp. 3-24 ◽  
Author(s):  
R. Park ◽  
J. R. Milburn
Keyword(s):  
United States ◽  
Reinforced Concrete ◽  
New Zealand ◽  
Seismic Design ◽  
Cyclic Load ◽  
Concrete Beam ◽  
Reinforced Concrete Beam ◽  
Test Results ◽  
Design Code ◽  
Load Tests

A comparison is made of the seismic design provisions for reinforced concrete beam-column joints required by the new New Zealand concrete design code NZS 3101 and recently proposed United States procedures. Large differences are shown to exist between these new provisions of the two countries. Results are reported
of cyclic load tests which were conducted according to the requirements of the new NZS 3101. The test results showed that location
of plastic hinges in beams away from the column faces may be of considerable advantage in the design of joints, when member sizes are small and joint shears are high, due to less congestion of reinforcement and better anchorage conditions.

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