Large steel bridge deck and manufacture method thereof

Abstract

The invention relates to a large steel bridge deck and a manufacture method thereof. The large steel bridge deck is made by welding a plurality of steel bridge deck blocks. Each steel bridge deck block is made by welding two or more steel bridge deck units. Each steel bridge deck unit is composed of a plurality of U-shaped ribs and a face plate; the U-shaped ribs are welded on the face plate at equal intervals; a transverse partition joint plate is welded to the U-shaped ribs and the face plate. The large steel bridge deck has the advantages that operation is simple, and the single-side welding double-side forming technique with high requirements on operating skill is avoided; welding materials are saved, expensive waterproof ceramic pads are not used, and gas shielded welding wires and protective gases are not used; no rigid jig plate is used, steel is saved, damage of the face plates by the jig plates is avoided, and great amount of work such as dismantling the jig plates and repairing is decreased.

Description

technical field [0001] The invention relates to a large-scale steel bridge deck that can connect 2 to 4 plate units with a width of one time to form a large plate to participate in the assembly of steel bridge decks and a manufacturing method thereof, belonging to the field of steel bridge manufacturing. Background technique [0002] Existing highway steel box girders and railway steel bridge integral bridge decks are composed of a huge deck, longitudinal U-shaped ribs and diaphragm connecting plates, and the three are perpendicular to each other to form an orthotropic bridge deck. steel bridge deck structure. The width of the large-scale steel girder bridge deck is 30-40m, and the bridge deck is subdivided into multiple plate units during manufacture, and then the plate units are welded together on the general tire frame. Due to the limitation of the width and length of the steel plate supply, at present, all steel bridge manufacturers use U-shaped ribs 2 and diaphragm con...

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Problems solved by technology

Its disadvantages: First, because there is a gap reserved for the V-shaped groove on one side, the welding filling amount is not fixed, and its lateral shrinkage and angular deformation are relatively large. There is a large amount of damage to the bridge deck, and there is a large amount of repair welding and grinding after welding, and the welding of the interlocking section of the diaphragm is operated in the supine position; second, the single-sided welding and double-sided forming technology requires groove processing and welder operation skills Higher, the overall production efficiency is low, ceramic backing, gas shielded welding wire, submerged arc welding wire, submerged arc flux, shielding gas and other materials are used in welding, and there are many types of materials and high cost

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