Large-span prestressed trough composite slab used as roof of basement
A basement roof and large-span technology, applied to roofs, underwater structures, buildings where cars are parked, etc.
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[0011] The present invention will be further described below in conjunction with the accompanying drawings.
[0012] as the picture shows:
[0013] The present invention is a groove-shaped laminated slab with a span of 12-22 meters, a slab width of about 1.2m, a slab height of about 0.9m, and a bearing capacity of 3-9T / m 2 In between, there may be overlapping marks or reserved exposed steel bars on the surface of the board. In the design and production, prestressed steel strands are used as the main reinforcement on the ribs of the grooved laminated slabs, and the width of the slabs is small, and the shape of the troughs is similar to that of a double T plate, and the flanges on both sides are removed, thereby reducing the height of the ribs. Made of small ribs, embedded steel bars and concrete. Use the conventional method to pour the columns and L beams, break the slab on the L beams, make a cast-in-situ layer on it, and fill the slab joints. If it is necessary to make a f...
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