Location

London

Event Website

http://www.csce2016.ca/

Description

Metallizing has emerged as an effective protective coating for steel bridge members, providing a physical barrier and a galvanic protection. Recent research has shown that metallized faying surfaces used in high strength bolted connections provide higher slip resistance than specified values for uncoated blast-cleaned faying surfaces in North American design standards. As a particularity, relaxation of the clamping force is observed in the slip-critical connections with metallized faying surfaces. In this study, tests were designed to evaluate the effect of relaxation on the slip resistance of metallized faying surfaces in high strength bolted connections. Some design parameters included in this study are the coating thickness, the amount of bolt preload, the type of bolt and the presence of burrs. Test results showed that the relaxation of the clamping force does not adversely affect the slip resistance of connections with metallized faying surfaces.


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Jun 1st, 12:00 AM Jun 4th, 12:00 AM

STR-818: THE EFFECT OF RELAXATION ON THE SLIP RESISTANCE OF METALLIZED FAYING SURFACES IN SLIP-CRITICAL CONNECTIONS

London

Metallizing has emerged as an effective protective coating for steel bridge members, providing a physical barrier and a galvanic protection. Recent research has shown that metallized faying surfaces used in high strength bolted connections provide higher slip resistance than specified values for uncoated blast-cleaned faying surfaces in North American design standards. As a particularity, relaxation of the clamping force is observed in the slip-critical connections with metallized faying surfaces. In this study, tests were designed to evaluate the effect of relaxation on the slip resistance of metallized faying surfaces in high strength bolted connections. Some design parameters included in this study are the coating thickness, the amount of bolt preload, the type of bolt and the presence of burrs. Test results showed that the relaxation of the clamping force does not adversely affect the slip resistance of connections with metallized faying surfaces.

http://ir.lib.uwo.ca/csce2016/London/Structural/12