Bridging system over expansion joint - has tapped bushes sliding in lengthwise T=section grooves in upright flanges of anchor rails.

摘要

Anchor rails (5,6) are fixed to the edges of the joint (2) in the building (3,4), and joint strips (22) with drillings (23) and forming layers one above the other are screwed to them. The strips in the topmost layer (26) at least are coupled together by bridge-pieces (15,16, 27,28) over the joint and which allow their relative movement. The anchor rails are of L-section and each in one piece. Their upright flanges (7,8) contain lengthwise undercut T-section grooves in which tapped bushes (24) of mating cross-section slide.The ends of the drillings in the strips towards the anchor rails can be counterbored (35) to accommodate the bush ends protruding above the tops of the upright rail flanges. Each bush can be cylindrical, with a radial collar (25) at one end. USE/ADVANTAGE - Simple and adaptable bridging system for expansion joint in road.