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Connecting structure of side plate type concrete filled steel tube special-shaped column and concrete beam

A technology of steel pipe concrete and reinforced concrete beams, which is applied in the direction of building components, protected buildings/shelters, building types, etc., can solve problems such as difficulty in reinforcing steel bars to surround force, affect the force of nodes, and weaken the steel pipe section, etc., to achieve load bearing High force, local buckling prevention, high ductility and high energy dissipation effect

Pending Publication Date: 2022-05-03
FUJIAN UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Reinforced concrete beams are important structural components, and their rigidity, stability and fire resistance are superior to steel beams. There is no good connection method for the connection between steel pipe concrete special-shaped columns and reinforced concrete beams. If the traditional steel pipe concrete columns and concrete beams are the same It is difficult to surround the steel bar and the force transmission is unreliable; if the steel bar is passed through, it will inevitably weaken the section of the steel pipe and affect the force of the node. Therefore, it is necessary to find an effective connection method between the special-shaped steel tube concrete column and the reinforced concrete beam

Method used

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  • Connecting structure of side plate type concrete filled steel tube special-shaped column and concrete beam
  • Connecting structure of side plate type concrete filled steel tube special-shaped column and concrete beam
  • Connecting structure of side plate type concrete filled steel tube special-shaped column and concrete beam

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Experimental program
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Effect test

Embodiment 1

[0038] Refer to attached Figure 1-4 As shown, a side-plate type concrete-filled steel pipe special-shaped column and concrete beam connection structure, including steel-filled steel pipe special-shaped column 1, reinforced concrete beam 2, steel pipe concrete special-shaped column 1 is composed of steel pipe 11 and column concrete 12, wherein the steel pipe 11 is composed of several steel plates Or cold-formed steel welded. Forming an L-shaped, T-shaped or cross-shaped cross-section, the column concrete 12 is filled into the interior of the steel pipe 11 .

[0039] The reinforced concrete beam 2 is composed of beam longitudinal bars 21, beam stirrups 22, and beam concrete 23. The beam longitudinal bars 21 are arranged in plural along the direction of the beam section, and the beam stirrups 22 are arranged at intervals along the beam span direction, surrounding the beam longitudinal bars 21. Form a reinforcement cage, beam concrete 23 fills the reinforcement cage, and beam lo...

Embodiment 2

[0047] Refer to attached Figure 5-7 As shown, the connection structure between the side plate concrete filled steel pipe special-shaped column and the concrete beam provided in this embodiment is basically the same as that in Embodiment 1, the only difference is that the side plate 4 is provided with a reinforcement member 5 on the side facing the steel corbel 3, wherein, The reinforcement part 5 adopts the form of cross reinforcement, specifically:

[0048] The transverse ribs 51 and the vertical ribs 52 perpendicular to the transverse ribs 51 are welded on the opposite side walls of the side plates 4 . The transverse rib 51 and the vertical rib 52 form a cross shape to prevent the side plate 4 from buckling locally.

Embodiment 3

[0050] Refer to attached Figure 8-10 As shown, the connection structure between the side plate concrete filled steel pipe special-shaped column and the concrete beam provided in this embodiment is basically the same as that in Embodiment 1, the only difference is that the side plate 4 is provided with a reinforcement member 5 on the side facing the steel corbel 3, wherein, The strengthening part 5 adopts the reinforcement form of lacing bars, specifically:

[0051] Several tie bars 53 are welded between the side plate 4 and the web 32 of the steel corbel 3 to prevent the side plate 4 from buckling locally.

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Abstract

The invention belongs to the field of buildings, and particularly relates to a side plate type concrete-filled steel tube special-shaped column and concrete beam connecting structure which comprises a concrete-filled steel tube special-shaped column and a reinforced concrete beam, the concrete-filled steel tube special-shaped column is composed of a steel tube and column concrete, and the steel tube is filled with the column concrete; the reinforced concrete beam is composed of beam longitudinal bars, beam stirrups and beam concrete, the multiple beam longitudinal bars are arranged in the beam section direction, the beam stirrups are arranged in the beam span direction at intervals, the beam longitudinal bars are surrounded to form a reinforcement cage, the reinforcement cage is filled with the beam concrete, and the beam longitudinal bars and the beam stirrups are wrapped. The width of the reinforced concrete beam is consistent with the limb width of the concrete filled steel tube special-shaped column; a steel corbel is arranged between the concrete filled steel tube special-shaped column and the reinforced concrete beam, the steel corbel comprises two flanges and a web plate connected between the two flanges, and the web plate is perpendicular to the flanges; the connecting structure provided by the invention can be suitable for various forms of concrete filled steel tube special-shaped columns, and is suitable for further popularization and application.

Description

technical field [0001] The invention relates to the field of construction, in particular to a connection structure between a side plate type concrete filled steel pipe special-shaped column and a concrete beam. Background technique [0002] The use of special-shaped columns in traditional building structures can prevent the columns from protruding from the wall and save space. It is widely used in engineering. Its typical cross-section forms include L, T and cross-shaped sections; however, currently more reinforced concrete special-shaped columns are used to carry The strength is insufficient, the seismic performance and ductility are poor, and the construction is complicated. Therefore, special-shaped columns made of concrete filled steel tubes can be used. Previous research results have shown that special-shaped columns made of concrete filled steel tubes have good mechanical properties. [0003] The connection between column and beam is a key part of the structure, and wh...

Claims

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Application Information

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IPC IPC(8): E04H9/02E04B1/98
CPCE04H9/021E04H9/025E04B1/98
Inventor 郑永乾林益豪麻双双梁王赓罗才松
Owner FUJIAN UNIV OF TECH
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