ROADWAY TRANSITION FOR EXPANSION JOINTS ON ROAD BRIDGES ETC.

摘要

A roadway transition for expansion joints on road bridges and the like includes intermediate bars extending parallel to the joint edges. The bars are supported at at least two points along their lengths by vertically oriented lazy tongs having their hinges extending parallel to the joint edges, these lazy tongs forming supporting beams for the intermediate bars. The upper end hinges of the lazy tongs are fixedly articulated at points in the range of the joint edges, so that the upper and lower intermediate hinges are in common vertical planes, with the upper intermediate hinges lying, in any position of the lazy tongs, in the horizontal plane of the upper end hinges. Each intermediate bar has at least one supporting member engageable with another intermediate bar to prevent tilting. The lower end hinges of the lazy tongs may be mounted in vertical guide slots.