System and method of installing and removing a temporary concrete barrier from a bridge deck

摘要

A system for installing and removing a temporary concrete barrier from a bridge deck includes a bolt, a star washer, a flat washer, a two-part sleeve, and a barbed nut. A method of using the system includes the steps of positioning the temporary concrete barrier at a desired location on the bridge deck; drilling a mounting hole in the bridge deck; filling the mounting hole with epoxy; inserting the barbed nut and two-part sleeve into the mounting hole and epoxy; inserting the bolt into the two-part sleeve and the barbed nut; waiting for the epoxy to set, tightening the system so that the temporary concrete barrier is held in place with respect to the bridge deck; loosening the system and removing the concrete harrier when it is no longer needed; and filling the mounting hole with epoxy after the concrete barrier is removed.

主权项

1. A system for installing and removing a temporary concrete barrier from a bridge deck, the temporary concrete barrier having at least one mounting opening, the system comprising:
a bolt having a bolt head and a bolt shaft including a threaded portion; a star washer having an inner portion, a large locking tab extending perpendicularly outward from the inner portion, a small locking tab extending perpendicularly outward from the inner portion in an opposite direction, and a plurality of stop tabs extending horizontally outward from the inner portion; a flat washer having a washer body including a bolt shaft opening and a locking recess defined on one side of the washer body adjacent to the bolt shaft opening; a two-part sleeve including a cylindrical upper portion spliced together with a cylindrical lower portion at a splice point; a barbed nut having a nut body including a threaded inner portion and barbs extending outward from the nut body; and wherein the inner portion of the star washer is circular and sized to allow the bolt shaft to pass therethrough but to prevent the bolt head from passing therethrough, the bolt shaft opening of the flat washer is sized to allow the bolt shaft to pass therethrough but to prevent the star washer from passing therethrough, the mounting opening defined in the concrete barrier is sized to allow the two-part sleeve and bolt shaft to pass therethrough but to prevent the flat washer from passing therethrough, the locking recess defined in the flat washer is sized to receive the small locking tab of the star washer, the two-part sleeve is sized to receive the bolt shaft, and the threaded inner portion of barbed nut is sized to receive the threaded portion of the bolt shaft.