Corrugated steel sheet web PC box spar bridge

摘要

PROBLEM TO BE SOLVED: To simplify the manufacture and control of a corrugated steel plate and improve executability and economical efficiency by making the height of the corrugated steel plate constant and forming a concrete web on the lower concrete floor slab in the vicinity of the support point to increase the height of the web.;SOLUTION: The upper concrete floor slab 1 and the lower concrete floor slab 2 are connected to each other by a corrugated steel plate 3 to form a continuous box girder bridge. In this bridge, the height of the corrugated steel plate 3 is made constant. Web concrete 4 is formed to rise at both ends of the lower concrete floor slab 2 in order to increase the height of the web in accordance with the bending moment increasing in the vicinity of the supporting point and the lower end of the corrugated steel plate 3 is connected to the concrete 4. A flange plate is welded to the upper and lower ends of the corrugated steel plate 3 in the connection part of the corrugated steel plate 3 and the concrete floor slabs 1, 2. A holed steel plate dowel or stud dowel welded to its surface is embedded in the floor slab 1, 2. In this way, the height of the corrugated steel plate 3 is made constant and the manufacture and control is simplified and further, executability and economical efficiency can be improved.;COPYRIGHT: (C)2000,JPO