Hydraulic Performance of Culverts with Safety Grates

摘要

The purpose of this research was to establish through an experimental study, the hydraulic characteristics of culvert end treatments (safety grates) on both box and pipe culverts. A significant amount of work has been performed in the past to establish the hydraulic characteristics of culverts, but there has been very little effort to study the hydraulics of culverts with grates. A 1:4 scale model was built to simulate flow conditions in a 5 x 8-ft box culvert. Investigators also tested a 1:4 scale model simulating flow in a 60-in. helical corrugated metal pipe culvert. The slopes of the culverts, the flowrates and the elevations of the tailwater were varied to simulate the various types of flow conditions which can exist in a highway culvert.