EVALUATION OF HORIZONTAL SEISMIC COEFFICIENT FOR CAST IN PLACE PILE UNDER THE CONSIDERATION OF UNCERTAINTIES IN REINFORCED CONCRETE BRIDGE SYSTEMS

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  • 鉄筋コンクリート橋梁システムに介在する不確定要因を考慮した場所打ち杭基礎の設計水平震度評価に関する研究
  • テッキン コンクリート キョウリョウ システム ニ カイザイ スル フカクテイ ヨウイン オ コウリョ シタ バショウチ クイ キソ ノ セッケイ スイヘイ シンド ヒョウカ ニ カンスル ケンキュウ

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Abstract

It is necessary that the occurrence of the limit states which are undesirable for the bridge systems should be prevented under the consideration of uncertainties in case of seismic design. In this study, firstly, the effect of uncertainties in reinforced concrete (RC) bridge systems on the response of the RC bridge pier and cast in place pile were statistically and analytically studied, and quantitative evaluations of variations in that response were obtained. Then seismic design method was discussed in which such uncertainties were considered in order to keep cast in place pile from yielding. Finally, the horizontal seismic coefficient for cast in place pile was proposed based on the system reliability theory and dynamic analysis for the bridge systems.

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