Seismic design and experiment of single and coupled corner gusset connections in a full-scale two-story buckling-restrained braced frame

2015 ◽  
Vol 44 (13) ◽  
pp. 2177-2198 ◽  
Author(s):  
Pao-Chun Lin ◽  
Keh-Chyuan Tsai ◽  
An-Chien Wu ◽  
Ming-Chieh Chuang ◽  
Chao-Hsien Li ◽  
...  
Keyword(s):  
Seismic Design ◽  
Full Scale ◽  
Braced Frame

Seismic Design and Hybrid Tests of a Full-Scale Three-Story Concentrically Braced Frame using In-Plane Buckling Braces

2013 ◽  
Vol 29 (3) ◽  
pp. 1043-1067 ◽  
Author(s):  
Ching-Yi Tsai ◽  
Keh-Chyuan Tsai ◽  
Pao-Chun Lin ◽  
Wai-Hang Ao ◽  
Charles W. Roeder ◽  
...  
Keyword(s):  
Seismic Design ◽  
Axial Strain ◽  
Local Buckling ◽  
Full Scale ◽  
Dynamic Tests ◽  
Braced Frame ◽  
Concentrically Braced Frame ◽  
Nonlinear Responses ◽  
Highly Nonlinear ◽  
Concentrically Braced

This research investigates the brace-to-gusset connection designs to allow the braces buckle in the plane (IP) of the frame. In order to study the performance of the IP buckling brace connections with different design details, five 3,026 mm–long A36 H 175 × 175 × 7.5 × 11 mm braces were tested using cyclically increasing axial displacements. All specimens failed at an average axial strain less than 0.025 due to the brace fracture at the mid-length where severe local buckling had occurred. Pseudo-dynamic tests on a three-story special concentrically braced frame (SCBF) using the proposed brace end connection details for six A36 H 150 × 150 × 7 × 10 mm braces were conducted using the PGA = 597 cm/s2 LA03 record to confirm with the component tests. The knife plates and IP buckling braces sustained a peak 0.049 rad interstory drift under the design base earthquake without fracture. The highly nonlinear responses were satisfactorily predicted by OpenSees. Recommendations on the seismic design of the IP buckling brace connections are provided.

scholarly journals Seismic design and hybrid tests of a full-scale three-story buckling-restrained braced frame using welded end connections and thin profile

2011 ◽  
Vol 41 (5) ◽  
pp. 1001-1020 ◽  
Author(s):  
Pao-Chun Lin ◽  
Keh-Chyuan Tsai ◽  
Kung-Juin Wang ◽  
Yi-Jer Yu ◽  
Chih-Yu Wei ◽  
...  
Keyword(s):  
Seismic Design ◽  
Full Scale ◽  
Braced Frame ◽  
Thin Profile

Code provisions for seismic design for concentrically braced steel frames

1992 ◽  
Vol 19 (6) ◽  
pp. 1025-1031 ◽  
Author(s):  
R. G. Redwood ◽  
A. K. Jain
Keyword(s):  
Seismic Design ◽  
Structural Engineering ◽  
Steel Frames ◽  
Braced Frames ◽  
Concentrically Braced Frames ◽  
Braced Frame ◽  
Concentrically Braced ◽  
Interstorey Drift ◽  
Available Information ◽  
Steel Braced Frame

Extensive research into the inelastic seismic response of concentrically braced frames and their components has been carried out in the last two decades. This knowledge has now been incorporated into seismic design practice in several countries, notably the U.S.A., Canada, and New Zealand. In this paper, design specifications from these three countries, which derive largely from the same body of research, are compared. The basic design philosophy for concentrically braced steel frames, loading, and member detailing are examined. It is concluded that, in general, the Canadian specifications are in conformity with the available information and have many similar features to codes of the other countries. Significant differences exist in the classification of braced frames, between interstorey drift requirements, in the treatment of dual structural systems, and to a lesser extent in member detailing requirements. Some features of Canadian codes meriting review are identified. Key words: structural engineering, earthquakes, standards, steel, braced frame, ductility, concentric bracing, dual system.

SEISMIC DESIGN AND ANALYSIS OF A KNEE BRACED FRAME BUILDING

2004 ◽  
Vol 8 (4) ◽  
pp. 523-543 ◽  
Author(s):  
DENIS E. CLEMÉNT ◽  
MARTIN S. WILLIAMS∗
Keyword(s):  
Seismic Design ◽  
Braced Frame ◽  
Frame Building

scholarly journals Full-Scale Blast Tests on a Conventionally Designed Three-Story Steel Braced Frame with Composite Floor Slabs

Vibration ◽  
2021 ◽  
Vol 4 (4) ◽  
pp. 865-892
Author(s):  
Michalis Hadjioannou ◽  
Aldo E. McKay ◽  
Phillip C. Benshoof
Keyword(s):  
Full Scale ◽  
Frame Structure ◽  
Blast Loads ◽  
Braced Frames ◽  
Test Program ◽  
Braced Frame ◽  
Earthquake Loads ◽  
Floor Slabs ◽  
Minimal Damage ◽  
Steel Braced Frame

This paper summarizes the findings of two full-scale blasts tests on a steel braced frame structure with composite floor slabs, which are representative of a typical office building. The aim of this research study was to experimentally characterize the behavior of conventionally designed steel braced frames to blast loads when enclosed with conventional and blast-resistant façade. The two tests involved a three-story, steel braced frame with concentrical steel braces, which are designed to resist typical gravity and wind loads without design provisions for blast or earthquake loads. During the first blast test, the structure was enclosed with a typical, non-blast-resistant, curtainwall façade, and the steel frame sustained minimal damage. For the second blast test, the structure was enclosed with a blast-resistant façade, which resulted in higher damage levels with some brace connections rupturing, but the building did not collapse. Observations from the test program indicate the appreciable reserved capacity of steel brace frame structures to resist blast loads.

Seismic Design, Analysis and Testing of a Friction Steel Braced Frame System for Multi-Storey Buildings in Vancouver

2018 ◽  
Vol 763 ◽  
pp. 1077-1086 ◽  
Author(s):  
Lucia Tirca ◽  
Ovidiu Serban ◽  
Robert Tremblay ◽  
Yan Jiang ◽  
Liang Chen
Keyword(s):  
Energy Dissipation ◽  
Seismic Response ◽  
Dynamic Testing ◽  
Seismic Energy ◽  
Elastic Stiffness ◽  
Full Scale ◽  
Experimental Program ◽  
Test Program ◽  
Braced Frame ◽  
Seismic Displacement

This article describes the application of the Friction Braced Frames (FBF) system for 4-and 10-storey buildings located in Vancouver, BC, in Canada. The FBF is coupled with a secondary moment resisting frame that provides back-up elastic stiffness and re-centring capacity that contribute to reduce storey drifts and more evenly distribute seismic energy dissipation over the frame height. In this study, the energy dissipation components consist of Pall friction devices and the system was designed using a conventional force-based method. The moment frame was proportioned to remain essentially elastic under the design seismic displacements. The seismic response of the system is examined through nonlinear response history dynamic analysis. An exhaustive test program was developed to verify the capacity of the system to sustain the anticipated seismic demand. Full-scale testing was performed on brace sub-assemblages and individual brace specimens equipped with friction elements. The experimental program included full-scale dynamic testing under real-time seismic displacement histories as obtained from response history analysis. The numerical simulations and test program showed that the dual FBF system represents an effective system for enhanced seismic response of multi-storey building applications in high seismic regions.

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