SHEAR AND BENDING BEHAVIOR OF RUBBER BEARINGS AND THEIR BOLTED CONNECTIONS IN CONTINUOUS ELEVATED-GIRDER BRIDGES SUBJECTED TO MULTI-DIRECTIONAL SEISMIC ACCELERATIONS

• GOTO Yoshiaki

  名古屋工業大学 次世代耐震工学研究所

• OKUMURA Toru

  (株)地震工学研究開発センター 構造工学研究室

• EBISAWA Takemasa

  名古屋工業大学 大学院工学研究科社会工学専攻

Bibliographic Information

Other Title

• 連続高架橋の多方向地震動下でのゴム支承と支承取付部の曲げせん断挙動

Abstract

 The multi-directional seismic behavior of rubber bearings installed in elevated-girder bridges was investigated by a bi-directional shake table test on a relatively large 2-span continuous elevated-girder bridge model, together with an advanced FE analysis of a realistic bridge model. The investigation was focused on the behavior of the rubber bearings and their fixing bolts under biaxial shear forces and bending moments that are ignored in the current seismic design. From this investigation, it was shown that the fixing bolts of the rubber bearings under negative reaction forces may fail by the bending moments around the transverse bridge axis before the shear strain of the rubber bearings attains its allowable value of 250%. A similar phenomenon was observed in the 2016 Kumamoto earthquakes.

Journal

• Journal of Japan Society of Civil Engineers, Ser. A1 (Structural Engineering & Earthquake Engineering (SE/EE))

  Journal of Japan Society of Civil Engineers, Ser. A1 (Structural Engineering & Earthquake Engineering (SE/EE)) 73 (3), 532-551, 2017

  Japan Society of Civil Engineers

Keywords

• rubber bearing
• continuous elevated-girder bridge
• fixing bolts
• multi-directional seismic acceleration

Details

• CRID: 1390282680328068608
• NII Article ID: 130006086097
• DOI: 10.2208/jscejseee.73.532
• ISSN: 21854653
• Web Site: https://www.jstage.jst.go.jp/article/jscejseee/73/3/73_532/_pdf
• Text Lang: ja
• Data Source:
  • JaLC
  • Crossref
  • CiNii Articles
  • KAKEN
• Abstract License Flag: Disallowed