Synthesis of spectrum-matched bi-directional ground motion with designated elliptical component of polarization

• Igarashi Akira

  京都大学防災研究所

• Gigyu Subaru

  京都大学大学院工学研究科

Bibliographic Information

Other Title

• 楕円偏極指標を規定したスペクトル適合水平２方向地震動の作成
• ダエンヘンキョク シヒョウ オ キテイ シタ スペクトル テキゴウ スイヘイ 2 ホウコウ ジシンドウ ノ サクセイ

Abstract

The spectrum-matched uni-directional accelograms are generally used to assess the seismic performance of regular bridge structures. However, since actual earthquakes are of bi-directional nature in horizontal components, performance assessment with spectrum-matched bi-directional accelerograms is regarded as advantageous. In this study, a procedure to synthesize spectrum-matched bi-directional acceleroograms from a spectrum-matched uni-directional accelerogram and its Hilbert transform by specifying the ellipitical component of poralization is proposed. Moreover, in order to examine the nature of the synthesized acclerograms, the response of bi-directional nonlinear elasto-plastic dynamic model with a single mass is investigated. As the result, it is found out that the influence of the ellipitical component of poralization on the nonlinear response can be computed with the proposed accelerograms.

Journal

• Journal of Structural Engineering, A

  Journal of Structural Engineering, A 62A (0), 273-279, 2016

  Japan Society of Civil Engineers

Keywords

• bi-directional ground motion
• spectrum-matched accelerogram
• elliptical component of polarization
• Hilbert transform

Details

• CRID: 1390001205283532032
• NII Article ID: 130005607931
• NII Book ID: AA12210243
• ISSN: 18816614
• ISSN: 1881820X
• DOI: 10.11532/structcivil.62a.273
• NDL BIB ID: 027287192
• Web Site: http://id.ndl.go.jp/bib/027287192
• Web Site: https://ndlsearch.ndl.go.jp/books/R000000004-I027287192
• Text Lang: ja
• Data Source:
  • JaLC
  • NDL
  • CiNii Articles
  • KAKEN
• Abstract License Flag: Disallowed