| 摘要 |
PROBLEM TO BE SOLVED: To provide a bridge structure smoothly expanded/contracted even in the bridge structure with a gradient. SOLUTION: In an earthwork section B, the lower face of a floor slab 40 is arranged in a horizontal direction to constitute a floor slab horizontal face 40A. The upper face of the floor slab 40 forms an upward gradient toward the bridge section A side from the earthwork section B side. In the earthwork section B, the thickness of the floor slab 40 is thicker toward the bridge section A side from the earthwork section B side. A bottom plate 30 is arranged under the earthwork section B side of the floor slab 40, and a tread slab 32 is arranged under the bottom plate 30. The upper face of the bottom plate 30 is arranged in a horizontal direction to constitute a bottom plate horizontal face 30A. The floor slab horizontal face 40A is placed on the bottom plate horizontal face 30A, and a sliding face S is formed between both horizontal faces. The floor slab 40 is slid along the sliding face S to move in a bridge axis direction X when expanded/contracted. COPYRIGHT: (C)2007,JPO&INPIT
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