STRUCTURAL AND AERO-DYNAMIC CHARACTERISTICS OF CABLE-SUPPORTED BRIDGES USING STEEL PIPE GIRDERS

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Other Title
  • 鋼管桁を用いた吊り形式橋梁の構造と耐風特性
  • コウカン ケタ オ モチイタ ツリ ケイシキ キョウリョウ ノ コウゾウ ト タイフウ トクセイ

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Abstract

Two types of new cable-supported bridges using pipe girders and steel orthotropic decks were proposed; two-pipe-girder bridges with two cable planes and three-pipe-girder bridges with one cable plane. The suspension bridge with a main span of 750m and the cable-stayed bridge with a main span of 500m were designed and validated to be feasible. Wind tunnel tests were then conducted for these bridges. The torsional flutter occurred at the non-dimensional wind speed of about 4.5 for the two-pipe-girder bridge, which was higher than that of the pipe girder with RC slabs. The three-pipe-girder bridge shows superb aero-dynamic properties.

Journal

  • Doboku Gakkai Ronbunshu

    Doboku Gakkai Ronbunshu 2005 (805), 805_91-805_103, 2005

    Japan Society of Civil Engineers

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