Rail to post fixing for open box beam highway guard rail - uses conical sleeves with bolts to wedge flanges of rail slot onto U=section retainer

摘要

The connection fixes an open box-beam guard rail (1) to a post (2) and utilises wedge-shaped sleeves (5) to promote friction between connected components. The guard rail may be used in the highway field at the top of embankments or at bridge piers. The rail n1) may be of square hollow section with a central continuous slot on the rear face, and internal squarely returned flanges (1b) delineate the slot. The post (2) is of a channel section, and the connection incorporates a 'U' section retaining plate (3), three bolts (4), and two conical sleeves (5). The central bolt (4) passes through the web of the post and through the slot to engage a threaded hole (3a) in the retainer (3).