Assembly of integral flat-plate type or hood face section steel hollow lattice construction and production method

Abstract

The invention relates to a wholly assembled flat or curved steel vierendeel grid structure and a producing method thereof. The producing method comprises the steps: firstly, the two ends of a cylinder steel pipe are welded with a supporting plate respectively; the surface of the supporting plate and the pipe wall of the cylinder steel pipe are taken as welding points, 8 chords with T-shaped sections are respectively welded at the two ends of the cylinder steel pipe to form a double-layer assembling crisscross unit; chords of two or more double-layer assembling crisscross units are connected by a double spicing plate on the construction site so as to assemble the flat or curved grid structure. The flat or curved grid structure produced by the method has dexterous and firm structure; the welding technique is finished in factories, thus being capable of improving the precision and quality of production; the grid is formed by a vierendeel beam rather than a vierendeel truss rod so that water pipelines and electrical wires can go through the grids conveniently, takes regular grid shapes and plays a role of hanging floors and roofs.

Description

Technical field: [0001] The invention relates to a steel grid structure for construction and a manufacturing method thereof, in particular to an assembled integral flat or curved steel hollow grid structure and a manufacturing method. technical background: [0002] At present, in addition to the steel frame beams, the existing domestic and foreign large-column net (9m ~ 12m) high-rise building steel structure floors still need to add intermediate steel beams, cross-shaped or well-shaped steel beams in the column net, and intermediate steel beams. Beams, cross-shaped or well-shaped steel beams generally adopt H-shaped steel, such as office buildings with a column network of 12m×12m that can be flexibly divided into rooms, and the height of the steel frame I-shaped cross-section beam is 800 (L / 15) and the middle well-shaped grid beam (Grid 4000×4000) section height 6700 (L / 20), 4m grid beam upper flange cast-in-situ (100mm~120mm) reinforced concrete slab, the total thickness o...

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Problems solved by technology

However, the comprehensive cost of H-shaped steel grid plate is higher than that of the middle cross beam or middle well-shaped beam structure of large-column grid steel frame (10% to 15%). Although the storey height is saved, the steel consumption is increased, and its shortcomings are summarized. As follows: first, the amount of steel used is relatively large; second, the water inside the floor structure is inconvenient, and the wires and tubes are inconvenient; third, there are many grids, and there are many solder joints for welding connection nodes, such as 12m×12m grid plate, When the grid is 1.5m×1.5m, the grid plate has 81 intersection nodes, that is, 1944 welding seams. Not only the welding workload on site is heavy, but also the quality is difficult to control due to the influence of welding deformation

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