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Prestressed assembled frame joint structure and its construction method

A node structure, prefabricated technology, applied in the direction of building structure, construction, etc., can solve the problems of the reserved pipe holes cannot correspond, the beams and columns cannot be squeezed together, and the beams and columns are poorly positioned, so as to improve the connection. capacity and seismic capacity, the effect of improving seismic capacity and improving overall performance

Inactive Publication Date: 2018-08-07
广西华宇建工有限责任公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, in engineering practice, due to the wrong installation position of the reserved pipe or the poor positioning of the beam and column during the construction site, the hole position of the reserved pipe does not correspond to the corresponding situation, resulting in the failure of normal installation of the prestressed tendon, making the beam and column can't squeeze together

Method used

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  • Prestressed assembled frame joint structure and its construction method
  • Prestressed assembled frame joint structure and its construction method
  • Prestressed assembled frame joint structure and its construction method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] Embodiment 1: as Figure 1-5 As shown, a prestressed assembled frame node structure includes a prefabricated reinforced concrete column 1 and a prefabricated reinforced concrete beam 2. The prefabricated reinforced concrete column 1 and the prefabricated reinforced concrete beam 2 are effectively connected by unbonded prestressed bars, Both ends of the reinforced concrete beam 2 are pre-embedded with I-beams 4, and the upper flange 401 and the lower flange 403 of the I-beam 4 are respectively provided with two tunnels 404. Corresponding two end faces are provided with steel plates 501, and the steel plates 501 are provided with channels 504 corresponding to the channels 404 on the I-beam 4, prefabricated reinforced concrete columns 1 are provided with prestressed tendon reserved pipes, prefabricated reinforced concrete beams 2 is provided with a prestressed tendon reserved pipe 3, the reserved pipe 3 in the beam, the hole 404 on the I-beam end of the beam, the reserved ...

Embodiment 2

[0035] Embodiment 2: The difference with Embodiment 1 is: as Figure 6-7 As shown, a tunnel 505 is also provided in the steel plate 502 supporting the prefabricated reinforced concrete column 1, which is used as a tunnel for prestressing tendons and penetrates through the tunnel 504 of the steel plate 501 . The purpose of this is twofold: one is to improve the prestressed tendons embedded in the I-beam in the column, so that the axial compressive strength of the column can be enhanced without using spiral tendons in the column; the other is to further facilitate the prestressed tendons installation.

Embodiment 3

[0036] Embodiment 3: as Figure 8 As shown, on the basis of Embodiment 1 or 2, the I-beam 4 in the prefabricated reinforced concrete beam 2 is provided with shear studs 406, so as to increase the bond strength between the I-beam 4 and concrete, and the number of studs It is determined according to the ultimate strength of the bond between the beam and the concrete.

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Abstract

The invention relates to a prestress fabricated frame joint structure and a construction method thereof. H-shaped steel is embedded in one end of a prefabricated reinforced concrete beam. First ducts are arranged in flanges and / or a web of the H-shaped steel and used for embedding unbonded prestressed steel. A protrusion extending out of the concrete beam is arranged on the surface of the H-shaped steel. A steel plate is arranged on the face, opposite to the beam, of a prefabricated concrete column. Second ducts for unbonded prestressed steel to pass through and an insertion hole matched with the protrusion are formed in the steel plate. The positions of the second ducts correspond to the positions of the first ducts. Passageways which correspond to the second ducts and are used for embedding unbonded prestressed steel are further arranged in the concrete column. During installation time, the protrusion is inserted in the insertion hole, the prestressed steel ducts in the beam and the column are automatically connected together, and construction is facilitated.

Description

technical field [0001] The patent of the invention relates to a prestressed assembled frame node structure and a construction method thereof. Background technique [0002] The prefabricated assembly structure system has the advantages of saving steel, reducing self-weight, high production efficiency, good product quality, low labor intensity of workers, protecting the environment, and improving comprehensive economic benefits, which are conducive to the sustainable development of society. Therefore, the development of assembly structure system is the construction industrialization One of the best choices. However, in the past, some large-space prefabricated concrete frame structures were loosely connected among components, and the structure was scattered and severely damaged during earthquakes, so their use in earthquake areas was limited. Patent documents CN104032840U, CN2797476Y, CN101029503A, etc. set prestressed tubes in prefabricated beams and prefabricated columns, an...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E04B1/21E04B1/22
CPCE04B1/21E04B1/215E04B1/22
Inventor 梁书玲娄培杰范虎盛真丁志强杨旭东
Owner 广西华宇建工有限责任公司