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Prefabricated concrete floor

A prefabricated concrete and concrete technology, which is applied to floors, manufacturing tools, building components, etc., can solve problems such as poor compressive capacity and excessive weight of concrete beams, so as to improve service life, reduce relative weight of plates, and increase tensile strength Effect

Active Publication Date: 2017-11-10
绿砼(江苏)建筑科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the compressive capacity of the floor in other directions is poor, and the concrete beams are not easy to be too heavy, and the strength requirements must also be met.

Method used

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  • Prefabricated concrete floor
  • Prefabricated concrete floor
  • Prefabricated concrete floor

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] A prefabricated concrete floor slab, comprising a plurality of longitudinal channel steels, two channel steels are facing away from each other and the openings are set outwards to form a pair of channel steels, the channel steels are provided with a back plate, upper and lower symmetrical upper and lower plates, and a pair of channel steels There are connecting holes on the steel back plate, and the connecting pieces pass through the connecting holes in two horizontal crosses to connect a pair of channel steels. The longitudinal channel steels are poured with concrete to form precast concrete slabs.

[0023]The manufacturing method of the prefabricated concrete floor slab comprises the following steps: First, the channel steel is manufactured, and the chemical composition of the channel steel is: C 0.2%, Zn 4%, Ti 2.5%, V 0.6%, Nb 0.4%, Mg 0.2%, Si 0.2 %; Mn 0.05%; Co 0.045%, Sn 0.01wt%; P ≤ 0.02%; The molten steel is obtained by refining, and the temperature of the mol...

Embodiment 2

[0029] A prefabricated concrete floor slab, comprising a plurality of longitudinal channel steels, two channel steels are facing away from each other and the openings are set outwards to form a pair of channel steels, the channel steels are provided with a back plate, upper and lower symmetrical upper and lower plates, and a pair of channel steels There are connecting holes on the steel back plate, and the connecting pieces pass through the connecting holes in two horizontal crosses to connect a pair of channel steels. The longitudinal channel steels are poured with concrete to form precast concrete slabs.

[0030] The manufacturing method of the prefabricated concrete floor slab comprises the following steps: First, the channel steel is manufactured, and the chemical composition of the channel steel is by weight percentage: C 0.25%, Zn 6%, Ti 2%, V 0.6%, Nb 0.5%, Mg 0.35%, Si 0.35 %; Mn 0.07%; Co 0.04%, Sn 0.02wt%; P ≤ 0.02%; The molten steel is obtained by refining, and the ...

Embodiment 3

[0036] A prefabricated concrete floor slab, comprising a plurality of longitudinal channel steels, two channel steels are facing away from each other and the openings are set outwards to form a pair of channel steels, the channel steels are provided with a back plate, upper and lower symmetrical upper and lower plates, and a pair of channel steels There are connecting holes on the steel back plate, and the connecting pieces pass through the connecting holes in two horizontal crosses to connect a pair of channel steels. The longitudinal channel steels are poured with concrete to form precast concrete slabs.

[0037]The manufacturing method of the prefabricated concrete floor slab comprises the following steps: First, the channel steel is manufactured, and the chemical composition of the channel steel is by weight percentage: C 0.3%, Zn 4%, Ti 2%, V 0.5%, Nb 0.5%, Mg 0.3%, Si 0.25 %; Mn 0.07%; Co0.04%, Sn 0.01wt%; P≤0.02%; RH refining to obtain molten steel, control the temperat...

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Abstract

The invention provides a prefabricated concrete floor. The prefabricated concrete floor comprises a plurality of longitudinal U steel, wherein every two pieces of U steel are arranged back to back and provided with outward openings so as to form a pair of U steel; each U steel is provided with a back plate and an upper plate and a lower plate arranged in up-down symmetry; the back plates of every pair of U steel are provided with connection holes; connecting pieces pass through the connection holes so as to connect a pair of U steel, every two connecting pieces form a group and are arranged in a cross manner, and each group of the connecting pieces is parallel to the other; and concrete is casted out of the longitudinal U steel so as to form the prefabricated concrete floor. According to the invention, paired U steel is formed by connecting each pair of U steel via the parallel groups of two crossed connecting pieces, so the floor is locally reinforced, good strength is obtained in the transverse axial direction of the prefabricated concrete floor; thus, the comprehensive strength of the prefabricated concrete floor is improved, and the relative weight of the floor is reduced. The concrete used in the invention has effectively improved compressive strength and tensile strength.

Description

technical field [0001] The invention relates to a prefabricated concrete floor, which belongs to the field of floor technology. Background technique [0002] Concrete slabs generally have longitudinal reinforcement, which is distributed inside the beam. Most of the beams are the most important tensile reinforcement. The reinforcement resists negative bending moments at both ends of the beam. The reinforcement is located in the compression zone in the middle of the beam and bears the compressive stress. , which is in the shape of a mouth, fixes the upper and lower steel bars and resists shear force at the same time. When the height of the beam is large, according to the structure, it is necessary to arrange long steel bars on both sides of the middle of the beam, and use tie bars to connect. However, the compressive capacity of the floor slab in other directions is poor, and the concrete beams are not easy to be too heavy, and the strength requirements must also be met. Co...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B28/00E04B5/02C22C38/02C22C38/04C22C38/10C22C38/12C22C38/14C22C33/04B22D11/18B28B7/22B28B23/02
CPCB22D11/18B28B7/22B28B23/02C04B28/00C22C33/04C22C38/002C22C38/008C22C38/02C22C38/04C22C38/10C22C38/12C22C38/14E04B5/02C04B14/047C04B14/042C04B22/064C04B22/145C04B14/06C04B14/02C04B16/0633C04B24/2623C04B22/148C04B24/04C04B2103/302C04B22/002
Inventor 周新亚
Owner 绿砼(江苏)建筑科技有限公司
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