ULTIMATE STRENGTH OF SLEEVE JOINT BETWEEN CONCRETE-FILLED CIRCULAR STEEL PIPES WITH SHEAR CONNECTOR

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  • ずれ止めを用いたコンクリート充填鋼管ソケット接合部の耐力評価
  • ズレドメ オ モチイタ コンクリート ジュウテン コウカン ソケット セツゴウブ ノ タイリョク ヒョウカ

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Abstract

As a method of connecting two concrete-filled circular steel pipes, a simple sleeve joint in which a small diameter pipe is inserted with the specific length to a large diameter pipe with concrete filling the gap between two pipes has been proposed as an economical and effective joint system. Joint specimens with shear connectors on pipe faces as well as those using a base plate at the tail end of the inserted steel pipe were tested in order to investigate the effect of loading method and the ratio of larger pipe diameter to smaller one. The test results indicate that the loading method, cyclic or monotonic, has little effect on the load-defection curves up to maximum load and failure mechanism of the joint system changes with the increase of pipe diameter ratio. In this paper, a modified equation for calculating the ultimate strength is developed to encompass those of more general configuration than the equation prposed previously.

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