TEH EFFECT OF SURFACE ROUGHNESS OF HIGH STRENGTH BOLT FRICTIONAL JOINTS ON SLIP RESISTANCE

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  • KAMURA Takashi
    Dept. of Architecture, Faculity of Engineering, Nippon Institute of Technology
  • HOKUGO Hisashi
    Dept. of Architecture, Faculity of Engineering, Nippon Institute of Technology

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Other Title
  • 高力ボルト摩擦接合の接合面粗さがすべり耐力へ及ぼす影響
  • コウリョク ボルト マサツ セツゴウ ノ セツゴウメン アラサ ガ スベリ タ

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Ths present paper investigates the effect of surface roughness of high strength bolt factional joints on slip resistance, as well as the relationship between surface rouehness and the slip coefficient. The main results are as follows: 1. Sufficient surface rouehness can be achieved without rust on the frictional surface using Shot or Grit Blast Process. However, adequate rust on the frictional surface is required for the grinder process. 2. The effect of surface roughness on relaxation is slight 3. A sufficient slip coefficient can be achieved without rust on the frictional surface by using the Shot or Grit Blast Process. 4. If no rust is present on the frictional surface, the surface roughness and slip coe伍dent correlate. However, if rust is present on the frictional surface, both the surface roughness and slip coefficient are limited.

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