Double shear tests of single 7/8-in. and 1-in. high-strength bolts are reported. Altogether, ninety-six A325 bolts were tested in A7 steel jigs or in A440 steel jigs. Eighty-four A354BC, A354BD, and A490 bolts were tested in jigs made of A440 or constructional alloy steel. The effect of a number of variables on the shear strength and deformation at ultimate load was studied. The study showed that bolts tested in tension jigs had shear strengths 10% lower than bolts tested in compression jigs. Initial preload, faying surface condition, and type of connected material had no significant influence on shear strength. The shear resistance of a bolt was directly reflected by the available shear area. Also, it was found that the ultimate shear stress was approximately 73% of the tensile strength for A325 bolts tested in compression jigs and approximately 68% when these bolts were tested in tension jigs. For A354BC, A354BD, and A490 bolts, the corresponding values were 69% and 62%.

Shear strength of high-strength bolts

Evaluation of the current resistance factors for high-strength bolts

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Slip critical bolted connections : a reliability analysis for design at the ultimate limit state

Load–deformation prediction for eccentrically loaded bolt groups by a kinematic hardening approach

In 1997, fatigue cracking was found in the deck of the movable part of an important highway bridge near Rotterdam (one of the two Van Brienenoord Bridges, figure 1). Figure 2 gives an impression of the cross-section and the layout of the bridge where the cracks were found.

Stiffness of Lap Joints with Preloaded Bolts

Tests of large butt joints, fabricated from A7 steel and fastened with A325 bolts arranged in compact patterns, indicate that present design specifications are unduly conservative with respect to shear strength of bolts; test setup and procedure.

Robert T. Foreman

Papers

Static Tension Tests of Compact Bolted Joints

Static Tension Tests of Compact Bolted Joints