Vibration characteristics identification and FE modeling of a GFRP truss pedestrian bridge

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  • Hayashi Gen
    京都大学大学院 工学研究科社会基盤工学専攻
  • Goi Yoshinao
    京都大学大学院 工学研究科社会基盤工学専攻
  • Kim Chul-Woo
    京都大学大学院 工学研究科社会基盤工学専攻
  • Sugiura Kunitomo
    京都大学大学院 工学研究科社会基盤工学専攻

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  • GFRP 下路トラス橋梁の振動特性評価および FE モデル構築に関する一検討
  • GFRP カロ トラス キョウリョウ ノ シンドウ トクセイ ヒョウカ オヨビ FE モデル コウチク ニ カンスル イチ ケントウ

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Abstract

<p>This paper presents the results of a real bridge field experiment, carried out on a glass fiber reinforced polymer (GFRP) pedestrian truss bridge of which nodes are reinforced with stainless steel plates. The aim of this paper is to identify the modal properties of this bridge by using both conventional techniques and a model updating algorithm. Pedestrian-induced vibrations are also measured and utilized to identify modal properties of the bridge. A stochastic subspace identification combined with stabilization diagram was utilized to identify modal properties of the bridge. Moreover, an FE model capable of reproducing experimental results was constructed using the cross-entropy method.</p>

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