The Structural Engineer > Archive > Volume 68 (1990) > Issues > Issue 19 > Strength and Stiffness of Shear Connections for Discrete U-Frame Action in Composite Plane Girders
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Strength and Stiffness of Shear Connections for Discrete U-Frame Action in Composite Plane Girders

It is known that continuous inverted-U frame action can be effective in stabilising the bottom flanges of continuous composite plate girders near internal supports, because the shear connection usually has sufficient strength and stiffness in transverse bending. But when the girders have web stiffeners, concentrated moments act on the shear connections above the stiffeners. An experimental study of the resistance of typical shear connections to these moments is presented. Use of discrete U-frame action that relies on the shear connection appears to be feasible, but more research is needed to provide the basis of a general design method. Professor R.P. Johnson and Ir. N. Molenstra