Fabricated frame system adopting hot-rolling unequal-thickness U-shaped steel composite beams

Abstract

The invention relates to an assembled frame system using hot-rolled unequal-thickness U-shaped steel composite beams, belonging to the technical field of structural engineering. The components and materials included in the frame system are as follows: hot-rolled unequal-thickness U-shaped steel main beam, hot-rolled unequal-thickness U-shaped steel secondary beam, frame columns (can be steel tube columns, steel tube concrete columns or H-shaped steel columns), concrete Slab, floor concrete, ring plate, lug plate, high-strength bolts, studs, partitions. The hot-rolled unequal-thickness U-shaped steel girder is fixed on the described frame column through the described ring plate, lug plate, partition plate and high-strength bolts; the described concrete slab is placed on the hot-rolled unequal-thickness U The upper part of the shaped steel is connected by studs; the bottom plate concrete is poured inside the hot-rolled unequal-thickness U-shaped steel in the negative bending moment area of ​​the node, and the connection of the two is ensured by studs. The frame system has superior mechanical performance, can realize assembly construction and has good indoor architectural effect, and has broad engineering application prospects.

Description

technical field [0001] The invention relates to the field of structural engineering, in particular to the field of assembled structures. Background technique [0002] Steel frame structure or steel-concrete composite frame structure has superior mechanical properties and remarkable assembly construction characteristics, and has broad development prospects. Most frame beams in traditional steel frame structures or steel-concrete composite frame structures use I-shaped cross-sections. However, steel beams with I-shaped cross-sections often require later cladding and decoration, which not only increases construction costs, but also causes problems with indoor convex beams. If the frame beam adopts the traditional equal-thickness U-shaped steel section, the area ratio between the web and the flange will be unreasonable, resulting in waste of materials. In addition, the lower flange of the steel girder in the negative moment zone of the node is under compression, but lacks effec...

AI Technical Summary

Problems solved by technology

[0005] In order to solve the deficiencies in the existing steel frame and steel-concrete composite structure frame, the present invention proposes a prefabricated frame system using hot-rolled unequal-thickness U-shaped steel composite beams, which can effectively avoid the existing I-beam - Concrete composite beams need to be clad and decorated in the later stage and the disadvantages of indoor convex beams, and effectively improve the ability of the composite beam node area to resist negative bending moments, ensure the reliability of the structure, combined with superior assembly performance, the invention can be widely used in assembly steel structure building

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