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

A technology of prefabricated concrete and local reinforcement, applied in truss structures, building structures, joists, etc., can solve the problems of difficult construction of UHPC materials, concentrated damage of beams and columns, and insufficient adaptability, so as to reduce the difficulty of fabrication and construction, increase Structural ductility, effect of improving efficiency

Pending Publication Date: 2018-10-02
SOUTHEAST UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

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

Method used

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

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Embodiment Construction

[0035] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments.

[0036] Such as figure 1 As shown, the prefabricated annular UHPC shell at the base of the column is made first, and the annular shell is surrounded by four UHPC surfaces 1; the annular UHPC shell is prefabricated with the grouting sleeve 2 and the composite stirrup 3 at the column base; the annular prefabricated UHPC shell at the base of the column is high A short distance from the grouting sleeve 2 can be within the range of the connection height of the column feet, so that the section stiffness and strength gradually change in steps, so as to avoid local damage of ordinary concrete at the section change position and affect the performance of the component.

[0037] figure 1 The annular prefabricated UHPC shell of the column foot is made of a detachable assembled formwork; the manufacturing process is as follows: Figure 2-3As shown, the det...

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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...

Claims

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Application Information

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IPC IPC(8): E04B1/19E04B1/58E04C3/20E04C3/34
CPCE04B1/1903E04C3/20E04C3/34E04B2001/1993
Inventor 管东芝郭正兴吴梧鸿
Owner SOUTHEAST UNIV
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