Connecting method of steel beam and existing reinforced concrete column

A technology for reinforced concrete columns and connection methods, which is applied in building maintenance, construction, building construction, etc., can solve problems such as poor reliability of force transmission in node areas, large concrete damage in core areas, and difficulty in ensuring quality, avoiding crack exposure, Superior seismic ductility and convenient materials

Inactive Publication Date: 2013-03-13
TSINGHUA UNIV
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Problems solved by technology

[0003] The traditional connection method between the steel beam and the existing reinforced concrete column is the outer steel plate plus the tension bolt or planting reinforcement, which is not only complicated in construction, but also causes great damage to the concrete in the core area, poor seismic ductility, and poor reliability of force transmission in the node area. And the quality is difficult to guarantee

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  • Connecting method of steel beam and existing reinforced concrete column
  • Connecting method of steel beam and existing reinforced concrete column
  • Connecting method of steel beam and existing reinforced concrete column

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Embodiment Construction

[0020] The structure, processing and use of the present invention will be further described below in conjunction with the accompanying drawings.

[0021] figure 1 Shown is the overall schematic diagram of the present invention. The specific construction steps are as follows:

[0022] 1) Chiseling the surface around the connection area of ​​the original reinforced concrete column 1 node, and planting L-shaped short steel bars 2 in the chiseled area, such as figure 2 As shown, the steel mesh sheet 3 is bound on the periphery of the L-shaped short steel bar, such as image 3 shown.

[0023] 2) if Figure 4 As shown, two channel steels 4 are processed, and stud connectors 5 are welded on the inner side of the channel steel; the outer side of the channel steel 4 that needs to be connected to the steel beam 14 side is welded with an outstretched corbel 6, and the outrigger 6 Composed of upper flange plate 7, lower flange plate 8 and web 9, holes are punched at the correspondin...

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Abstract

The invention relates to a connecting method of a steel beam and an existing reinforced concrete column, which can be used for reinforced modification of an existing reinforced concrete structure, and belongs to the technical field of structural engineering. The method comprises the steps of: scabbling, planting bars and binding reinforced mesh pieces on the surface around with a node connection domain of the original reinforced concrete column; processing two pieces of channel steel and welding a stud connection piece inside; extending an extending bracket and external reinforcing plate on the channel steel connected to the steel beam; buckling the two pieces of channel steel and wrapping the original reinforced concrete column; welding in an abut manner; pouring node area concrete; and finally connecting the steel beam. The method overcomes the deficiencies of the conventional connection method, is simple in structure, quick and convenient to construct, good in stress performance of the connecting node, reliable in force transfer, and can efficiently prevent a node core area from cracking and being exposed. The core area concrete is wrapped by a steel plate so that the concrete is strongly constrained, and the quake-proof ductility of the node is good. The method has high practicality and wide application prospect.

Description

technical field [0001] The invention relates to a connection method between a steel beam and an existing reinforced concrete column, and belongs to the technical field of structural engineering. Background technique [0002] Reinforcement and transformation of existing buildings is an effective way to improve structural bearing capacity, stiffness and durability, prolong service life, and improve use functions. Steel structure or steel-concrete composite structure has the advantages of light weight, convenient construction and hoisting, good seismic performance, high degree of industrialization, and good environmental effects. It has broad application prospects for reinforcement and reconstruction of existing buildings; while traditional concrete structures are economical It has good performance and good compression resistance, and it still has advantages when used in columns mainly for compression resistance. Therefore, for the reinforcement and transformation of existing ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E04G23/02
Inventor 聂建国杨悦陶慕轩樊健生
Owner TSINGHUA UNIV
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