PRACTICAL ANALYSIS OF CONTINUOUS GIRDERS AND CABLE STAYED BRIDGES WITH CORRUGATED STEEL WEB

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  • KATO Hisato
    社団法人 土木学会 日本鋼管(株)橋梁建設部大阪橋梁設計室
  • NISHIMURA Nobuo
    社団法人 土木学会 大阪大学大学院工学研究科土木工学専攻

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  • 波形鋼板ウェブを有する連続桁および斜張橋の実用解析法
  • ハケイ コウハン ウェブ オ ユウスル レンゾク ケタ オヨビ シャチョウキョウ ノ ジツヨウ カイセキホウ

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Abstract

Recently, a developed form of the PC box girders using corrugated steel web are flourishingly under construction at many sites. The form begins to be used for the continuous girders and the usage expected to be developed even for the cable stayed bridges. Since the corrugated web does not possess rigidity along the span axis, the influence due to shear deformation strongly appears under bending. The authors have developed an elastic equation extending beam-bending theory considering shear deformation. Expanding the equation, the advanced structural analysis by the theorem of dual three-moment method and the CWB (Corrugated Web Beam) matrix displacements-method are formularized. The knowledge introduced through the analysis is so important that the practical bridge engineers should take it into their consideration.

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