n Journal of the South African Institution of Civil Engineering = Joernaal van die Suid-Afrikaanse Instituut van Siviele Ingenieurswese - Bearing capacities and modes of failure in single-bolt lap joints : technical paper
|Article Title||Bearing capacities and modes of failure in single-bolt lap joints : technical paper|
|© Publisher:||South African Institution Of Civil Engineering (SAICE)|
|Journal||Journal of the South African Institution of Civil Engineering = Joernaal van die Suid-Afrikaanse Instituut van Siviele Ingenieurswese|
|Publication Date||Jan 2001|
|Pages||13 - 18|
Premature failures have been observed to occur in single-bolt lap joints in bearing, particularly where the connected plates are relatively thin and washers are not provided. A series of 28 tests conducted under the author's supervision, as well as 12 tests conducted in Australia, are described covering a range of bolt diameters, plate thicknesses and washer arrangements. In many of these specimens the mode of bearing failure involves rotation and pull-through of the bolt associated with eccentricity of the lap joint. The bearing capacity of many of these joints was found to be well below the strength predicted for conventional bearing failure in the Canadian/South African design code, although within the range predicted in the clause for screws or hollow rivets in lap joints. Revised design criteria are proposed in which the presence of standard or large washers is important in achieving adequate bearing resistance.
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