| 摘要 |
PROBLEM TO BE SOLVED: To prevent a depression and an upheaval from being caused by peeling of a road surface, by making the amount of expansion/contraction of a concrete floor slab surely absorbed by a drainage pavement with which an expansion/contraction part of a bridge is lined. SOLUTION: An almost truncated chevron-shaped expansion joint (J) sandwiching and an expansion spacing (S1) of the concrete slab (2) in between, which is embedded in an opposed state, and post-cast concrete (6), which is placed in the state of being almost flush with an upper end of the joint (J), are lined with the single drainage pavement (7) with a fixed thickness (T3) from above; a part in a position corresponding to the expansion spacing (S1) of the drainage pavement (7) is cut out and separated as a joint (10) with a necessary opening width (O), which can follow the expansion/contraction action of the expansion spacing (S1); and only a compacting part zone (Z) with a fixed width (W1), which is compacted by a passing vehicle, on the periphery of the joint (10) for expansion/contraction is solidified in a high-strength manner by a grout material (11) which permeates a porous body of the drainage pavement (7). COPYRIGHT: (C)2005,JPO&NCIPI |
