| 摘要 |
1324383 Demountable bridges; expansion joints CREUSOT-LOIRE 21 Oct 1970 [23 Dec 1969] 49962/70 Headings E1B and E1G A decking member for a demountable bridge comprises an assembly of longitudinal steel reinforcements 3, of trough-section, and transverse steel reinforcements 2, welded together, a floor-plate 4. fixed to the assembly and stopping short of the ends of the longitudinal reinforcements 3, and end plates 6 welded to the projecting ends of the longitudinal reinforcements 3 and to the transverse reinforcements, each end plate 6 having a wavy edge 7 providing teeth, the teeth at the two ends of the decking member being laterally offset in opposite directions such that they interfit as shown, with a gap being left for expansion. The decking members rest on underlying supports 1. Road surfacing 5 covers the floorplate 4 to a depth such that it is flush with the surfaces of the end plates 6. A gutter 8 and deflector 9 are secured respectively to the two juxtaposed transverse reinforcements 2 for drainage purposes. |
