chariot de dilatation

CONT: The most common type of steel expansion bearings … or shoes used by INDOT [Indiana Department of Transportation] consist of three major parts: a top shoe, an expansion roller, and an expansion plate. The top shoe, sometimes called a sole plate, connects the expansion roller to the beam or girder. The expansion roller is curved at the top and bottom to accommodate longitudinal movement through a rocking motion. The expansion shoe, sometimes referred to as a masonry plate, connects the expansion roller to the bridge seat or to a recessed anchor plate.