| 摘要 |
<p>Disclosed herein is an embodiment of a roadside barrier to sit on top of a retaining wall to provide impact resistance to vehicular traffic. The precast concrete traffic barrier unit is designed to have a counterweight from soil backfill on the horizontal stem portion of the precast unit that acts to resist overturning pressures from vehicle impact on the precast traffic barrier portion which extends above the roadway surface. The horizontal stem is an exemplary designed triangular in shape to capture more of the backfill soil than typically what soil backfill rest directly above the horizontal stem or counterweight portion. Therefore, the triangular horizontal stem with its arching effect between adjacent units will allow more of the soil backfill to resist impact loading and reduce the amount of concrete needed to provide adequate vehicle restraint protection. An alignment seat locks the traffic barrier unit to the retaining wall below.</p> |
