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Seismic design and hybrid tests of a full-scale three-story concentrically braced frame using in-plane buckling braces

Ching-Yi Tsai, Keh-Chyuan Tsai, Pao-Chun Lin, Wai-Hang Ao, Charles W. Roeder, Stephen A. Mahin, Chih-Han Lin, Yi-Jer Yu, Kung-Juin Wang, An-Chien Wu, Jia-Chian Chen and Te-Hung Lin
Seismic design and hybrid tests of a full-scale three-story concentrically braced frame using in-plane buckling braces
Earthquake Spectra (August 2013) 29 (3): 1043-1067

Abstract

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 X 175 X 7.5 X 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 X 150 X 7 X 10 mm braces were conducted using the PGA = 597 cm/s (super 2) 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.


ISSN: 8755-2930
EISSN: 1944-8201
Serial Title: Earthquake Spectra
Serial Volume: 29
Serial Issue: 3
Title: Seismic design and hybrid tests of a full-scale three-story concentrically braced frame using in-plane buckling braces
Affiliation: National Taiwan University, Department of Civil Engineering, Taipei, Taiwan
Pages: 1043-1067
Published: 201308
Text Language: English
Publisher: Earthquake Engineering Research Institute, Berkeley, CA, United States
References: 23
Accession Number: 2021-002071
Categories: SeismologyEngineering geology
Document Type: Serial
Bibliographic Level: Analytic
Illustration Description: illus. incl. 6 tables
Secondary Affiliation: National Center for Research in Earthquake Engineering, TWN, TaiwanUniversity of Washington, USA, United StatesUniversity of California Berkeley, USA, United States
Country of Publication: United States
Secondary Affiliation: GeoRef, Copyright 2020, American Geosciences Institute. Reference includes data from GeoScienceWorld, Alexandria, VA, United States
Update Code: 2021
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