Pseudo-dynamic tests of a full-scale CFT/BRB frame - Part I: Specimen design, experiment and analysis

Keh Chyuan Tsai*, Po Chien Hsiao, Kung Juin Wang, Yuan Tao Weng, Min Lang Lin, Ker Chun Lin, Chui-Hsin Chen, Jiun Wei Lai, Sheng Lin Lin

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

110 Scopus citations

Abstract

A series of pseudo-dynamic tests (PDTs) of a full-scale 3-story 3-bay buckling-restrained braced frame (BRBF) using concrete-filled tube columns was tested in the Taiwan National Center for Research on Earthquake Engineering using networked PDT techniques in October 2003. During the tests, real-time experimental responses and video were webcasted to Internet viewers. The input ground motions adopted for the PDTs were chosen from the 1999 Chi-Chi and the 1989 Loma Prieta earthquakes and scaled to represent three seismic hazard levels. This paper is in two parts, focusing on the investigations of the overall structure and the local members. This paper constitutes Part I and discusses the design, analytical investigations, and key experimental results of the specimen frame, such as the buckling of the brace-to-gusset joints. Part II of the paper, the companion paper, describes the gusset stiffening schemes and detailed experimental behavior of the BRBs and their connections. Experimental peak inter-story drifts of 0.019 and 0.023 radians, prescribed for the design basis and the maximum credible earthquakes, respectively, are within the target design limits of 0.020 and 0.025 radians. These tests confirmed that the PISA3D and OpenSees nonlinear structural analysis computer programs can simulate the experimental peak shears and floor displacements well.

Original languageEnglish
Pages (from-to)1081-1098
Number of pages18
JournalEarthquake Engineering and Structural Dynamics
Volume37
Issue number7
DOIs
StatePublished - 1 Jan 2008

Keywords

  • Buckling-restrained brace
  • Concrete-filled tube (CFT)
  • Displacement-based seismic design
  • Networked pseudo-dynamic test
  • Nonlinear structural analysis

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