剥離干渉法を用いた鋼２主桁斜張橋の耐風安定性に関する検討

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  • A Study on Wind Resistance of Cable-Stayed Bridges with Two Steel Girders Using the Separation Interference Method
  • ハクリ カンショウホウ オ モチイタ コウ 2 シュゲタ シャチョウキョウ ノ タイフウ アンテイセイ ニ カンスル ケントウ

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Characteristics of wind-induced response of cable-stayed bridges with two steel edge girders were studied experimentally, and the effects of the Separation Interference Method and its applicability regarding the structural rationality were discussed. Two types of edge girders, i.e., I section and box girders, were considered. The vertical wind-induced responses of two I section girders were suppressed by locating the girders at the inner position. However, this requires additional bracket beams that anchor the stay cables, and may not be economical. The wind-induced responses of two box girders were generally suppressed by applying the Separation Interference Method without additional aerodynamic appendages such as fairings. This case does not require additional bracket beams and can possibly be used as an economical choice.

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