Precast leveling segment below a traffic barrier atop an earth retaining wall system

摘要

Disclosed herein are embodiments of a roadside barrier segment to sit on top of a retaining wall to provide impact resistance to vehicular traffic. Concrete traffic barriers are pre-cast in a controlled manufacturing environment then transported as a modular precast concrete segment to the jobsite and installed interlocking directly on top of an earth retaining wall. The precast concrete segment is designed to have a counterweight from soil backfill on a stem of the precast segment that resists overturning pressures from vehicle impact on the traffic barrier segment that extends above the roadway surface. The stem may be triangular in shape to capture more of the backfill soil. A vertical node may be placed on one side of the segment and a receiving channel on the opposite side of the segment to allow the interaction of adjacent segments to share impact loads from motor vehicles.

主权项

1. A precast leveling segment placed above a top portion of an underlying concrete earth retaining wall and below a sloped roadway, the precast leveling segment comprising:
a front portion comprising a front surface, a rear surface, a top surface, and a bottom surface, wherein:
the front surface is parallel to the rear surface;the top surface is parallel to the sloped roadway;the bottom surface is perpendicular to the front surface; andthe top surface is nonparallel to the bottom surface; a horizontal stem extending outwardly from the rear surface of the front portion and extending from the top surface to the bottom surface, a lower portion of the horizontal stem comprising a triangular portion extending outwardly from a first side and a second side of the horizontal stem, and the triangular portion of the horizontal stem comprising one or more cavities disposed along a face of at least one side of the triangular portion; and an alignment seat extending along at least a portion of the horizontal stem, the alignment seat being configured to lock into the underlying retaining wall system, wherein the underlying concrete earth retaining wall is not level with the sloped roadway, and wherein the precast leveling segment is situated between a traffic barrier segment and the underlying concrete earth retaining wall, at least a portion of the traffic barrier segment being above the sloped roadway.