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Composite concrete prefabricated beam

A prefabricated assembly and concrete technology, which is applied in the direction of structural elements, building components, and long-strip structural components for load-bearing, to achieve the effects of reducing beam cross-section, good synergistic workability, and reducing beam self-weight

Inactive Publication Date: 2017-03-15
YANGZHOU UNIV
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  • Abstract
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  • Application Information

AI Technical Summary

Problems solved by technology

[0007] The purpose of the present invention is to develop a composite concrete prefabricated assembly beam aiming at the shortcomings of the existing prefabricated assembly beam

Method used

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  • Composite concrete prefabricated beam
  • Composite concrete prefabricated beam
  • Composite concrete prefabricated beam

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Embodiment Construction

[0020] Such as figure 1 , 2 , shown in 3, the present invention comprises the beam housing 1 that is cuboid, and beam housing 1 adopts active powder concrete casting molding, and active powder concrete is made of Portland cement, silica fume, admixture, fine aggregate, high-efficiency water-reducing Among them, Portland cement has a strength grade of 42.5 and above, the SiO2 content in silica fume is more than 90%, the admixture is ultra-fine slag powder or finely ground Class I fly ash, and the fine aggregate is the largest particle size Quartz sand or washed river sand not larger than 2.5mm, high-efficiency water reducer is polycarboxylate water reducer, water reducing rate is more than 30%, compressive strength of active powder concrete is 130MPa ~ 150MPa, flexural strength is 20MPa ~ 30MPa, active powder Concrete is self-compacting and poured without vibration.

[0021] The beam shell 1 is provided with a reinforcement cage 2, and the reinforcement cage 2 protrudes upwar...

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Abstract

A composite concrete prefabricated beam relates to the field of building construction. The composite concrete prefabricated beam comprises a rectangular beam shell, two sides of which are respectively provided with secondary beam grooves. Through the secondary beam grooves, the beam shell is separated into a bottom shell body and a left shell body, a middle shell body and a right shell body which are arranged on the bottom shell body. A steel reinforcement cage is disposed inside the beam shell and extends upwards out of the upper surface of the beam shell. The beam shell is equipped with a grouting hole. The beam shell is filled with lightweight aggregate concrete through the grouting hole. By pouring the active powdery concrete material into the beam shell, the beam is endowed with high strength and high toughness and sectional dimension of the beam can be reduced. The steel reinforcement cage main-body is imbedded in the active powdery concrete shell, and the cooperative workability is good. As the active powdery concrete is used as a reinforcement protective layer, the bean is endowed with durability. By using the lightweight aggregate concrete as a core material, self-weight of the beam is effectively reduced.

Description

technical field [0001] The invention relates to the field of building construction, in particular to a composite concrete prefabricated assembly beam. Background technique [0002] The main components of the prefabricated structure are prefabricated in the factory and assembled on site. Its advantages lie in factory production, standardized operations, modern functions, diversified designs, flexible bays, good fire and earthquake resistance, clear and distinctive facades, and high quality assurance rates. The national development strategy of energy conservation, emission reduction and construction industrialization solves the problems of high building energy consumption, large resource and energy consumption, low technological content in the construction industry and low production efficiency existing in traditional construction production methods. [0003] CN204645415U patent document discloses a kind of prefabricated beam with liner, comprises prefabricated beam body, the ...

Claims

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Application Information

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IPC IPC(8): E04C3/293
CPCE04C3/293
Inventor 张鸣陈龙修王付鸣周明耀王永超宋琳钱晨
Owner YANGZHOU UNIV
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