| 摘要 |
PROBLEM TO BE SOLVED: To simplify constitution, reduce cost, and sufficiently impart a girder- axial prestress to a concrete slab, and further, increase stability of the connecting strength of the concrete floor slab and the corrugated steel plate web. SOLUTION: This introduced prestress type composite box-girder is constituted of upper and lower parallel concrete floor slabs 1, 2 and corrugated steel plate webs 3, 3 of both sides. In this case, many connection members 5, (50) are protrusively provided to the lateral direction to the inside face or the outside face of the upper and lower sides 3a, 3b of respective steel plate webs 3. The upper and lower concrete floor slabs 1, 2 are conected to each other through the connection members 5 (50) to the inside face or the outside face of the upper and lower side parts 3a, 3b in the respective steel plate webs 3.
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