Fabricated concrete frame structure locally reinforced through prefabricated ultra-high performance concrete (UHPC) shells

Abstract

The invention discloses a fabricated concrete frame structure locally reinforced through prefabricated ultra-high performance concrete (UHPC) shells. The fabricated concrete frame structure comprisesthe annular prefabricated UHPC shell at the column foot, a prefabricated concrete column, the U-shaped UHPC shell at the beam end and a prefabricated concrete laminated beam; the annular prefabricatedUHPC shell is arranged at the column foot of the prefabricated concrete column; the annular prefabricated UHPC shell at the column foot, a stirrup and grouting sleeves are prefabricated into a whole;the beam end of the prefabricated concrete laminated beam forms a U-shaped key groove through the U-shaped prefabricated UHPC shell; the U-shaped UHPC shell at the beam end and the stirrup are prefabricated into a whole; the lower portion of the prefabricated concrete laminated beam adopts small-specification high-strength rebars; and after the laminated beam is placed in place, beam upper rebarsare bound, and then laminated layer concrete is poured on site to form an overall structure. The prefabricated UHPC shell with excellent performance is used for the maximum force-bearing position ofthe fabricated frame component, advantages of the prefabricated UHPC shell and the fabricated frame component are combined, the manufacturing cost is reduced, the structural form of the fabricated concrete frame structure is innovated, and the seismic performance of the fabricated frame structure is improved.

Description

technical field [0001] The invention relates to a prefabricated UHPC shell partially reinforced assembled concrete frame structure, which belongs to the field of construction engineering. Background technique [0002] Under the new development situation, the country is actively promoting the transformation and upgrading of the construction industry, and prefabricated buildings have developed rapidly with their good economic, environmental and social benefits. Prefabricated concrete frame structure can greatly improve construction capacity and construction speed, and is one of the most common and widely used prefabricated structural systems. At present, the prefabricated concrete frames mainly used in China include prefabricated beam bottom bar anchoring type, beam end keyway lapping type and overall prefabricated joints and other structural systems. These systems often have high precision processing requirements, insufficient applicability, and poor construction. Problems s...

AI Technical Summary

Problems solved by technology

It solves the problems of insufficient adaptability of the existing prefabricated frame structure, difficult construction and high cost of UHPC materials

Combining the advantages of the two, it solves the problem that the joints between the beam column and the column base of the invention in the assembled concrete frame structure are prone to concentrated damage and destruction

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