| 摘要 |
<p>A highway traffic lane barrier is composed of precast, reinforced concrete barricades which are joined together in alignment with each other by a horizontally and vertically tapered, vertical tongue-and-groove coupling arrangement which is integrally molded on the ends of each barricade, with the wider portion of the taper at the bottom to facilitate the removal or replacement of one of the barricades within an installation. A modified form of the coupling includes an impactresistant insert to protect against chipping, cracking or breaking caused by repeated use when a barricade is moved from place to place for temporary service.</p> |
