Friction coefficient between concrete and bridge bearing shock pad
Friction coefficient between concrete and bridge bearing shock pad
(OP)
Railroad Bridge: Fixed, High-Load, Multi-Rotational Disc Bearing
Per AISC - Modern Steel Construction - OCtober 2004 - Steel Quiz - Question #9:
Part or all of the shear may be absorbed by the friction between the base plate and the foundation. In the rail bridge application the friction would be between the Masonry plate and the shock pad or the shock pad and the concrete pier cap.
Does anybody have any data on friction coefficients between these materials?
Per AISC - Modern Steel Construction - OCtober 2004 - Steel Quiz - Question #9:
Part or all of the shear may be absorbed by the friction between the base plate and the foundation. In the rail bridge application the friction would be between the Masonry plate and the shock pad or the shock pad and the concrete pier cap.
Does anybody have any data on friction coefficients between these materials?





RE: Friction coefficient between concrete and bridge bearing shock pad
At first glance, I'm not sure if the thickness will affect this, but I've heard that the coefficient of friction between concrete or steel and elastomer is about 0.20. I think this is the basis for the Horiz. Load < (1/5)(Vert. Load) anchorage check in AASHTO 14.6.6.4, AASHTO LRFD 14.7.6.4, and AREMA (1999 - only one I have) Vol. 2 Chap. 19, Section 1.6.3.10.
RE: Friction coefficient between concrete and bridge bearing shock pad