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This work is licensed under a Creative Commons Attribution-NonCommercial 4.0 International License
Article
Establishment of Slip Coefficient for Slip Resistant Connection
Author(s)
Hwan-Seon Nah and Kang-Sik Kim
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DOI:10.17265/1934-7359/2011.02.003
Affiliation(s)
Green Growth Lab., Korea Electric Power Corporation Research Institute, Daejon 305-380, Republic of Korea
ABSTRACT
A slip critical connection has various values to adopt the proper slip coefficient in various conditions of faying surfaces in AISC, AIJ and Eurocode3. The Korean Building Code regulates the unique slip coefficient, from 0.45 to 0.5 without consideration of the diverse faying conditions in 2009. In this study, the slip resistance test, including five kinds of surface treatments were conducted to obtain the proper slip coefficients available to steel plate KS SM490A. The slip coefficient of specimens over zinc primer thickness of 128 μm exhibit was 0.42. The clean mill treated surface had prominently lower values as slip coefficient, 0.27. For red lead painted treatment, it is suggested to setup a minimum slip coefficient, 0.21, below a coating thickness of 65 μm. The slip coefficient of one faced lap connection was higher 1.4 times than the slip coefficient of two faced lap connection.
KEYWORDS
Bolt, slip, coefficient, faying surface, coating, torque, tension.
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