Ultimate state and design of thin-walled circular steel columns under bi-directional seismic excitations

• Goto Yoshiaki

  名古屋工業大学大学院　社会工学専攻

• Muraki Masayuki

  株式会社日建設計シビル　設計管理部

• Ebisawa Takemasa

  名古屋工業大学大学院　社会工学専攻

Bibliographic Information

Other Title

• 2方向地震動を受ける円形断面鋼製橋脚の限界値と動的耐震照査法に関する考察

Abstract

An investigation is made on how the coupling of bi-directional horizontal seismic excitations affects the ultimate behavior of thin-walled circular steel columns used as bridge piers. First, an instability criterion is derived to identify the ultimate limit state of columns under bi-directional horizontal loads. Then, an ultimate interaction curve expressed in terms of two horizontal restoring force components is derived based on the so-called pushover analysis. The accuracy of the proposed ultimate interaction curves is confirmed by carrying out an extensive materially and geometrically nonlinear dynamic analysis under various bi-directional seismic excitations. Finally, in view of the application to practical design, the derivation method of some partial safety factors is also discussed.

Journal

• Journal of Structural Engineering, A

  Journal of Structural Engineering, A 55A 629-642, 2009

  Japan Society of Civil Engineers

Keywords

• steel bridge pier
• seismic design
• dynamic
• bi-directional
• ultimate state
• instability

Details

• CRID: 1390282680260759552
• NII Article ID: 130004950484
• NII Book ID: AN10122872
• ISSN: 09108009
• ISSN: 1881820X
• DOI: 10.11532/structcivil.55a.629
• Web Site: http://id.nii.ac.jp/1476/00005422/
• Data Source:
  • JaLC
  • IRDB
  • CiNii Articles
  • KAKEN
• Abstract License Flag: Disallowed