Road safety barrier

摘要

A wire rope road safety barrier including at least one wire rope, a plurality of posts configured to be supported in the ground along a roadside or central reservation, the posts including a cut-out provided in respective ones of the posts, and a retainer. The retainer includes an arm for embracing at least half of a circumference of the post whereby the retainer can be held on the post at a position along its length, the arm defining a plane, and a tab extending perpendicularly from the plane of the arm for retaining the at least one wire rope against the post, the tab being configured to yield at a break point at which the tab is attached to the arm when subjected to a lateral force by the at least one wire rope that exceeds a predetermined amount to permit separation of the rope from the barrier within a predetermined impact zone.

主权项

1. A wire rope road safety barrier comprising:
at least one wire rope; a plurality of posts configured to be supported in the ground along a roadside or central reservation, said posts comprising a cut-out provided in respective ones of the posts for supporting the at least one wire rope, wherein the cut-out is recessed within an outer periphery of the post and has a substantially flat portion that extends transversely to the longitudinal axis of the post and a curved portion extending from a part of the flat portion that is innermost relative to the outer periphery of the post to the outer periphery, wherein the substantially flat portion resists downward movement of the rope during vehicle impact whereas the curved portion permits upward movement thereof; and a retainer comprising: an arm defining a plane, the arm for embracing at least half of a circumference of the post whereby the retainer can be held on the post at a position along its length, and a tab extending perpendicularly from the plane of the arm for retaining the at least one wire rope against the post, the tab being configured to yield at a break point at which the tab is attached to the arm when subjected to a lateral force by the at least one wire rope that exceeds a predetermined amount to permit separation of the rope from the barrier within a predetermined impact zone, wherein the at least one wire rope is retained captive within the cut-out by the retainer.