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An experimental study on inelastic behavior for exposed-type steel column bases under three-dimensional loadings

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Abstract

Considerable damage occurred to steel structures during the Kobe earthquake in Japan. Numerous exposed-type column bases failed in several consistent patterns caused by brittle base plate fracture, excessive anchor bolt elongation, unexpected early anchor bolt failure, and inferior construction work. An exposed-type column base receives axial force and biaxial bending when receiving an arbitrary multidirectional earthquake motion. Up to now, numerous researchers have examined methods to identify their stiffness and strength, but those studies have heretofore been restricted to in-plane behaviors. Therefore, it is necessary to clarify the inelastic behavior of exposed type steel column bases under biaxial lateral loading and axially compressive-tensile loading, which is a closer simulation of the real seismic excitation. In this study, exposed type steel column bases with different failure types, anchor bolt yielding and base plate yielding, are tested under different loading programs, then moment resisting mechanisms and failure modes are investigated.

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Authors and Affiliations

  1. School of Architecture, Chosun University, Gwangju, 501-759, Korea

    Jae-Hyouk Choi

  2. School of Architecture & Civil Engineering, Kyungpook National University, Daegu, 702-7012, Korea

    Yeol Choi

Authors
  1. Jae-Hyouk Choi
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  2. Yeol Choi
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Correspondence to Jae-Hyouk Choi.

Additional information

Recommended by Associate Editor Seong Beom Lee

Jae-Hyouk Choi is associate professor of Chosun University. He received his B.E. and M.S. from Kyung-pook National University, Korea. He received Dr of Engineering from Tokyo University, Japan, in 2003. He is currently engaged on a large government funded research project on the development of Smart Green Construction Technology as well as being involved in ongoing development of the steel seismic-resisting system of buildings.

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Choi, JH., Choi, Y. An experimental study on inelastic behavior for exposed-type steel column bases under three-dimensional loadings. J Mech Sci Technol 27, 747–759 (2013). https://doi.org/10.1007/s12206-012-0901-x

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  • DOI: https://doi.org/10.1007/s12206-012-0901-x

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