DEVELOPMENT OF HYSTERETIC MODEL FOR HIGH-DAMPING RUBBER BEARINGS UNDER BI-DIRECTIONAL AND LARGE STRAIN DOMAIN LOADING

• DANG Ji

  埼玉大学 大学院理工学研究科

• IGARASHI Akira

  京都大学 防災研究所

• MURAKOSHI Yuta

  西日本旅客鉄道株式会社

Bibliographic Information

Other Title

• 高減衰ゴム支承の水平2方向・大ひずみ変形時の挙動を表現した2方向復元力モデルの開発

Abstract

 In this study, the hysteretic behavior of High Damping Rubber (HDR) bearings under bi-directional loading condition is discussed and a new numerical model is proposed for accurate seismic response simulation of isolated bridges. The difference of hysteretic behavior of HDR under horizontal uni- and bi-directional loading was analyzed based on results of loading tests. Representative simple numerical models, such as the orthogonal combination of bi-linear hysteretic models, Multiple Shearing Spring (MSS) model and the Park-Wen model were found having significant different in simulating the tests results. As a consequence of discussion on the source of the difference of numerical and test results, a modified version of Park-Wen model is developed and proposed. The modified Park-Wen model allows effective representation of effect of the bi-directional shear strain components to the increase of hysteretic energy dissipation at high strain levels, with a minimal number of model parameters. Validity of the modified Park-Wen model is shown by comparison with bi-directional static loading test results, as well as pseudo-dynamic tests of high-damping rubber bearings.

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)) 72 (1), 250-262, 2016

  Japan Society of Civil Engineers

Keywords

• elastomeric bearing
• high damping rubber
• bi-directional
• modified Park-Wen model

Details

• CRID: 1390282680326705664
• NII Article ID: 130005148044
• DOI: 10.2208/jscejseee.72.250
• ISSN: 21854653
• Web Site: https://www.jstage.jst.go.jp/article/jscejseee/72/1/72_250/_pdf
• Text Lang: ja
• Data Source:
  • JaLC
  • Crossref
  • CiNii Articles
  • KAKEN
• Abstract License Flag: Disallowed