鉄筋で補強した円形コンクリート充填鋼管柱の耐火性能

書誌事項

タイトル別名
  • FIRE RESISTANCE OF CIRCULAR STEEL TUBE COLUMNS INFILLED WITH REINFORCED CONCRETE
  • テッキン デ ホキョウ シタ エンケイ コンクリート ジュウテン コウカン チュウ ノ タイカ セイノウ

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抄録

This study deals with the elasto-plastic beam-column behavior of circular steel tube columns infilled with reinforced concrete subjected to fire. Based upon the stress-strain characteristics of materials at high temperatures and the mechanics of column deflection curves, a numerical analysis method has been developed to simulate the time historical response. This method can provide a fairly good estimation for the fire resistant performance of the column. It is found that, comparing a proposed simpler superposed strength theory with the above refined numerical solution, the theory gives a satisfactory approximation to predict reinforcement effects of both steel bars and hoops on the ultimate strength of such columns.

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