Experimental study on slip coefficient and destruction mechanism of high strength bolted friction type joints with metallic thermal spraying surface coating on one side

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  • 片面に金属溶射を用いた高力ボルト摩擦接合継手のすべり係数とすべりメカニズムに関する実験的研究
  • カタメン ニ キンゾク ヨウシャ オ モチイタ コウリョク ボルト マサツ セツゴウ ツギテ ノ スベリ ケイスウ ト スベリ メカニズム ニ カンスル ジッケンテキ ケンキュウ

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Abstract

High strength bolted friction type joints are often used on steel bridge. On the other hand, the number of rows of bolts has tended to increase as a result of the thicker steel plate. In addition, corrosion is actualizing on the existing bridge on the bolted joints. In response to this problem, the authors have investigated the use of thermal spraying for the surfaces in order to achieve a high slip coefficient. In this study, we have performed on the tensile tests in order to examine the effect of the slip resistance with metallic thermal spraying surface coating on one side. It was concluded from the experimental result that the slip coefficient of the surface coating is about 10% higher than inorganic zinc paint on both sides and its slip coefficient depends on the destruction Mechanism.

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