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Column-through assembled prestressed concrete frame system and construction method thereof

A frame system and prestressing technology, which is applied in the direction of architecture and building construction, can solve problems such as unsatisfactory seismic performance, easy damage to column feet, and complicated construction, so as to improve the level of green construction, improve the seismic resistance of structures, and improve construction efficiency. The effect of build speed

Active Publication Date: 2017-03-15
CHINA STATE CONSTRUCTION ENGINEERING CORPORATION
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] The purpose of the present invention is to provide a prestressed concrete frame system and its construction method with column through assembly, to solve the complex construction, unsatisfactory anti-seismic performance, The column foot is easy to be damaged, and the energy-dissipating steel bar is installed in the beam, which is costly and complicated to manufacture.

Method used

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  • Column-through assembled prestressed concrete frame system and construction method thereof
  • Column-through assembled prestressed concrete frame system and construction method thereof
  • Column-through assembled prestressed concrete frame system and construction method thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0085] Example as image 3 and Figure 4 As shown, the energy-dissipating steel bars are unbonded steel bars 7.1 in the column, and the prefabricated reinforced concrete column 1 and the top cast-in-place laminated reinforced concrete layer 3.2 are connected within the column body with a prestressed channel 1.1 Column energy-dissipating reinforcement tunnels 1.2 parallel to and through the column body, the column energy-dissipating reinforcement tunnels 1.2 are intersected and staggered along the height direction of the column to form two vertical layers of space, and the energy-dissipating reinforcement bars 7 penetrate the column energy-dissipating Inside the steel bar channel 1.2, along the column height direction of the prefabricated reinforced concrete column 1, the intersecting and staggered arrangement is two vertical floors. The energy-dissipating steel bar partly runs through the energy-dissipating steel bar channel 1.2 of the column, while the other part is anchored ...

Embodiment 2

[0087] Example two such as image 3 and Figure 5 As shown, the energy-dissipating steel bar is an unbonded steel bar 7.2 outside the column, including an anchor section 7.2a inside the column, an unbonded section 7.2b outside the column, and a bonded section 7.2c outside the column. The prefabricated reinforced concrete column 1 On the column body, within the height range of the connection with the top cast-in-place laminated reinforced concrete layer 3.2, an energy-dissipating steel bar taper thread connection joint 8 is embedded in the side of the column body, and the anchor section 7.2a inside the column is not bonded to the outside of the column The segment 7.2b is mechanically connected and lengthened at the column edge through the energy-dissipating steel bar taper thread connection joint 8, and the non-bonded segment 7.2b outside the column and the bonded segment 7.2c outside the column are continuous steel bars. The column of the prefabricated reinforced concrete col...

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Abstract

The invention discloses a column-through assembled prestressed concrete frame system and a construction method thereof. The system comprises a foundation, a prefabricated reinforced concrete column, a prefabricated reinforced concrete beam, a superimposed floor slab and an external hung prefabricated wallboard, wherein a column prestressed duct is formed in the prefabricated reinforced concrete column; a beam prestressed duct is formed in the prefabricated reinforced concrete beam; post-tensioned unbonded prestressed tendons are penetrated into the beam prestressed duct and the column prestressed duct; energy-dissipation steel bars are anchored between the prefabricated reinforced concrete column and the superimposed floor slab. The structure provided by the invention has a good seismic performance; the lower part of a beam-column joint is subjected to unreinforced connection so that the structure is simple; the post-tensioned unbonded prestressed tendons and a replaceable column base energy dissipater are used so that the structure is less damaged and easy to be repaired in the earthquake; a construction manner of using the prefabricated superimposed floor slab and prestressed assembly makes site construction convenient and rapid and saves a lot of supports compared with a traditional prefabricated assembly structure; the column-through assembled prestressed concrete frame system provided by the invention is used in combination with lateral supports, shear walls and other lateral force resisting members, and is applicable to most high-rise public buildings.

Description

technical field [0001] The invention belongs to the field of prefabricated structures, in particular to a post-through assembled prestressed concrete frame system and a construction method. Background technique [0002] At present, the domestic prefabricated concrete frame structure system mainly adopts the prefabricated integral structural system cast in the beam-column joint area. The dry connection of beam-column joints is limited to the setting of corbels supporting prefabricated beams on prefabricated columns. The two are usually welded by steel plate embedded parts, and are mainly used in industrial plant structures. The United States and Japan have prefabricated prestressed frame dry connection nodes without corbels that are used in civil buildings. However, the existing system mainly has the following problems, resulting in a small application range: [0003] 1. In the beam-to-column connection node area, energy-dissipating steel bars are installed on the upper and...

Claims

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Application Information

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IPC IPC(8): E04B1/19E04B1/21E04B1/22
CPCE04B1/1903E04B1/21E04B1/22
Inventor 郭海山蒋立红刘康齐虎王冬雁李黎明田力达耿娇李明张海涛李桐杨晓杰范昕侯学颖
Owner CHINA STATE CONSTRUCTION ENGINEERING CORPORATION
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