Perforating grout anchoring prefabricated assembly-type concrete-filled steel tubular frame structure

Abstract

The invention discloses a perforating grout anchoring prefabricated assembly-type concrete-filled steel tubular frame structure, which comprises a square steel tube concrete lower column, a square steel tube concrete upper column, a semi-open steel box concrete composite beam, a prefabricated slab corner unit, a prefabricated slab edge unit, a prefabricated slab middle unit, column-beam post-pouring joints, column-column bolted connection joints, a prefabricated concrete slab and post-pouring concrete. The square steel tube concrete lower column, the square steel tube concrete upper column, the semi-open steel box concrete composite beam and the prefabricated concrete slab are connected into a whole in a grout anchoring mode, the pouring amount is less, the assembling rate is high, all components are in a prefabricated assembly form, onsite splicing is conducted, the construction speed is high, the construction process is simplified, and the construction environment is optimized; and secondly, the requirements of grout anchoring for the construction precision are low, operation by workers is convenient, the beam-column components are in a combined structural form, the self-weight is low, force bearing is more reasonable, the material property can be exerted sufficiently, the bearing capacity is high, the fire-resisting property is good, and shock resistance is good.

Description

technical field [0001] The invention relates to the technical field of prefabricated building structures, in particular to a perforated grout anchor prefabricated steel pipe concrete frame structure. Background technique [0002] Since the Twelfth Five-Year Plan, my country has vigorously developed prefabricated structures, striving to reduce the amount of on-site construction work, improve the quality of residential construction, reduce construction costs, and realize the industrialization and intensive development of residential construction. Compared with the reinforced concrete structure system and light steel structure system widely used in residential industrialization at the present stage, the steel tube concrete composite structure system has the advantages of fast construction speed of steel structure, high rigidity of concrete structure, low cost, and high bearing capacity. It has good shaping and toughness, convenient manufacture and construction, good fire resist...

AI Technical Summary

Problems solved by technology

The former increases the workload of on-site welding, while the latter has higher requirements for the installation accuracy of the nodes, and the installation is extremely inconvenient

In addition, after this kind of frame structure adopts steel beams, the slab members can only generally use cast-in-place composite floor slabs, which will greatly reduce the assembly rate

If you want to use prefabricated concrete beams, you need to set a large-sized ring beam platform at the joints of concrete filled steel tubes, and arrange a large number of stirrups in the ring beams, which makes the construction very complicated

[0004] In addition, some people have proposed a frame structure in the form of joints between square steel tube concrete columns and outer U-shaped steel-concrete composite beams. In this form of frame structure, the concrete in the composite beams needs to be cast in situ, which reduces the assembly rate and increases on-site construction. workload

In addition, installing partitions at the beam-column joints will reduce the integrity, the welding volume will be large, the welding quality cannot be guaranteed, and the construction is extremely inconvenient

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