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Prefabricated special-shaped central column, assembled beam-column joint and its construction method

A technology of beam-column joints and prefabricated assembly, applied in the direction of columns, pillars, pier columns, etc., can solve the problems of no special-shaped concrete columns, inapplicability, low axial pressure, etc., and achieve the effect of improving self-resetting ability and improving construction efficiency

Active Publication Date: 2019-03-01
鸿昊建设集团有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the method proposed in this document is only suitable for conventional prefabricated special-shaped column-beam structures, and is not suitable for prestressed beam-column structures suitable for large spans
[0003] CN103669567A discloses a new type of post-earthquake repair steel special-shaped column-prestressed eccentric support frame, the steel special-shaped column is used in conjunction with steel strands, but this document does not have how to apply prestress to the concrete special-shaped column
This technology needs to solve the following technical problems: 1) The special-shaped column is different from the regular-shaped column, and its axial compression ratio is lower, and the damage of the special-shaped column is mainly caused by the limbs; Where is it; 3) How to achieve "strong node, weak member" in the special-shaped column-beam joint structure; 4) How to fix the upper column, lower column, and beam when the joint is cast-in-place

Method used

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  • Prefabricated special-shaped central column, assembled beam-column joint and its construction method
  • Prefabricated special-shaped central column, assembled beam-column joint and its construction method
  • Prefabricated special-shaped central column, assembled beam-column joint and its construction method

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Effect test

Embodiment 1

[0044] Embodiment 1: as Figure 1-6As shown, a special-shaped column is shaped like a "+", rectangular steel pipes (1-1) are arranged in its core area and limbs, and connecting members (1-1) are connected between adjacent rectangular steel pipes (1-1). 2) The connecting member adopts a symmetrical X-shaped unit, wherein the member and the horizontal plane form an angle of 30-45°, the connecting member adopts a corrugated steel plate or a strip, and the plane where the X-shaped unit is located is vertical to the vertical plane; the following The mechanical principle that the arrangement of the special-shaped central column connection member 1-2 can improve the shear bearing capacity is explained:

[0045] (1) with Figure 10 a is a comparative example, when the connecting member adopts vertical steel plate, that is, the plane where the steel plate is located is parallel to the vertical plane where the rectangular steel pipe is located, at this time, the shear bearing capacity ...

Embodiment 2

[0063] Embodiment 2 is different from Embodiment 1 in that, as Figure 7-8 As shown, steel plates (1-6) are embedded on both sides of the rectangular steel pipe (1-1) of the prefabricated column (1), and the steel plate (1-6) on the surface of the rectangular steel pipe (1-1) and the steel pipe connector (3) The lower steel plates (3-2) are connected by bolt assemblies (1-5), wherein the bolts are pre-embedded in the lower column. The steel pipe connector (3) is different from the separation method of the embodiment. In this embodiment, the steel pipe connector (3) corresponding to the rectangular steel pipe of the special-shaped center column is connected to the steel pipe (3-5) and the horizontal steel pipe (3-5). 4) Connect together; preferably, the connecting steel plate (3-5) is arranged on the lower side of the steel pipe connector and bolt holes are set, and the corresponding lower column is also embedded with bolts, and is fixed with the connecting steel plate through ...

Embodiment 3

[0070] Embodiment three, such as Figure 9 As shown, as in the second embodiment, the steel pipe connector adopts an integral type, the difference is that a horizontal steel plate (3-6) is also arranged on the steel pipe connector, and the horizontal steel plate (3-6) is arranged on the branch of the lower column. The outside of the steel pipe connector corresponding to the rectangular steel pipe of the limb, and there is no gap with the upper surface of the lower column; during construction, the prefabricated beam (2) is placed on the horizontal steel plate (3-6), and the end of the prefabricated beam touches the On the vertical steel plate of the steel pipe connection.

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Abstract

The invention provides a prefabricated special-shaped middle concrete column. Rectangular steel pipes are arranged in a core area and four limb portions of the '+'-shaped column, and a connection component is connected between the rectangular steel pipe and every rectangular steel pipe on the limb portion and is provided with a plurality of symmetrical X-shaped units along the corresponding rectangular steel pipe. The invention further discloses a prefabricated concrete beam-column joint applied to the special-shaped column and a prefabricated concrete beam-column joint construction method. The prefabricated special-shaped middle concrete column, the prefabricated beam-column joint and the prefabricated beam-column joint construction method have the advantage that shear capacity, joint connection strength and construction efficiency of the special-shaped middle column can be improved effectively.

Description

technical field [0001] The patent of the invention belongs to the field of construction engineering, and specifically relates to a prefabricated special-shaped center column, an assembled beam-column node and a construction method thereof. Background technique [0002] CN103850350A discloses a prefabricated assembly integral special-shaped column structure and its splicing construction method. The structure includes a prefabricated upper column, a prefabricated lower column and a prefabricated composite beam; the prefabricated upper column and the prefabricated lower column are embedded with channel steel, and the channel There are reserved bolt holes on the steel, and the adjacent prefabricated upper columns and prefabricated lower columns are connected together by bolts through channel steel to form a special-shaped column with a cast-in-place area that runs through up and down, and the cast-in-place area is partially equipped with encryption Stirrups; the prefabricated co...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E04C3/34E04B1/21
CPCE04B1/21E04C3/34
Inventor 王昆
Owner 鸿昊建设集团有限公司
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