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作者:

Zhang, Tianxiong (Zhang, Tianxiong.) | Bu, Yidu (Bu, Yidu.) | Wang, Yuanqing (Wang, Yuanqing.) | Chen, Zhihua (Chen, Zhihua.) | He, Wei (He, Wei.)

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摘要:

The conventional surface treatments on stainless steel plates yield slip factors less than the required value for a friction grip, which hinders the application of stainless steel high-strength bolts. The slip factor and the treatment process of stainless steel surfaces are not clearly specified in most of the existing design codes. Existing studies also show different slip factors from similarly treated surfaces. In this paper, a new surface treatment is proposed: the two touching surfaces of the bolted connection are grit-blasted on one side and coated with high-velocity oxygen fuel (HVOF) on the other side. The slip behaviour of the new method was compared with four conventional methods. The roughness and hardness of different surfaces were measured prior to a total of 30 slip tests where the slip factors of multiple stainless steel surfaces were tested. It was shown that the new proposed surface treatment method can yield a slip factor of 0.61, much higher than the conventional surface treatments, meeting the requirements as a slip-resistant connection. The preload relaxation of stainless steel high-strength bolts was also monitored and compared to standard grade 10.9 high-strength bolts. We found that the preload relaxation in stainless steel high-strength bolts is negligible.

关键词:

test slip factor stainless steel high-strength bolted connection preload faying surface treatment method

作者机构:

  • [ 1 ] [Zhang, Tianxiong]Tianjin Univ, Sch Civil Engn, Tianjin 300072, Peoples R China
  • [ 2 ] [Chen, Zhihua]Tianjin Univ, Sch Civil Engn, Tianjin 300072, Peoples R China
  • [ 3 ] [Bu, Yidu]Beijing Univ Technol, Dept Civil Engn, Beijing 100124, Peoples R China
  • [ 4 ] [Bu, Yidu]Tsinghua Univ, Sch Civil Engn, Beijing 100084, Peoples R China
  • [ 5 ] [Wang, Yuanqing]Tsinghua Univ, Sch Civil Engn, Beijing 100084, Peoples R China
  • [ 6 ] [He, Wei]Chinese Acad Sci, Inst High Energy Phys, Beijing 100049, Peoples R China

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来源 :

MATERIALS

年份: 2022

期: 16

卷: 15

3 . 4

JCR@2022

3 . 4 0 0

JCR@2022

ESI学科: MATERIALS SCIENCE;

ESI高被引阀值:66

JCR分区:2

中科院分区:3

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SCOPUS被引频次: 3

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