Effect of revised design earthquake ground motions considering zones factors on nonlinear response of steel bridge piers

S. Kitaichi, K. Ono, S. Okada

研究成果: Paper

抜粋

In 2012, Level 2 Earthquake Ground Motions (Type I) and 'modification factor for zones (zone factor)' in the seismic design specifications for highway bridges in Japan were revised. Design earthquake ground motions should be multiplied by zone factors to evaluate the seismic performance. Regarding one of zones, Type I design earthquake ground motions are remarkably changed from the former earthquake ground motions multiplied by "0.85" to the revised ones multiplied by "1.2". The purpose of this paper is to investigate the effect of design earthquake ground motions considering zone factors on nonlinear response of steel bridge piers. The time-history dynamic analysis on the single-degree-of-freedom system was adopted in order to identify whether the bridges have enough seismic performance. Comparing obtained maximum response displacements of two kinds of earthquake ground motions (Type I and Type II), this paper came to conclusions. The results revealed that, regarding some zones, the Type I design earthquake ground motions have generally caused larger maximum response displacement than that of Type II.

元の言語English
出版物ステータスPublished - 2013 1 1
外部発表Yes
イベント13th East Asia-Pacific Conference on Structural Engineering and Construction, EASEC 2013 - Sapporo, Japan
継続期間: 2013 9 112013 9 13

Other

Other13th East Asia-Pacific Conference on Structural Engineering and Construction, EASEC 2013
Japan
Sapporo
期間13/9/1113/9/13

ASJC Scopus subject areas

  • Civil and Structural Engineering
  • Building and Construction

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  • これを引用

    Kitaichi, S., Ono, K., & Okada, S. (2013). Effect of revised design earthquake ground motions considering zones factors on nonlinear response of steel bridge piers. 論文発表場所 13th East Asia-Pacific Conference on Structural Engineering and Construction, EASEC 2013, Sapporo, Japan.