CN203878774U - Shearing resisting steel pipe concrete beam column joint connecting structure - Google Patents

Abstract

The utility model relates to a shear-resistant steel pipe concrete beam-column node connection structure, which belongs to the technical field of building structure engineering. Concrete-filled steel tube beam-column node connection structure, the adopted technical scheme is that the upper concrete-filled steel tube column and the lower steel tube concrete column are fixedly connected through a node structure, and steel beams are fixed on the circumference of the node structure, and the connection node includes an upper through-slab, The lower through plate, the shear diaphragm and the steel pipe plate, two shear diaphragms are vertically arranged between the upper through plate and the lower through plate, the shear diaphragms are arranged crosswise, the upper through plate, The space surrounded by the lower through plate and the shear partition is provided with steel pipe plate parts; the utility model has reasonable structure and strong shear resistance, and is widely used in node connection of steel pipe concrete beams and columns.

Description

A shear-resistant concrete-filled steel tube beam-to-column connection structure

technical field

The utility model relates to a shear-resistant steel pipe concrete beam-column node connection structure, which belongs to the technical field of building structure engineering.

Background technique

The steel pipe concrete structure is composed of steel pipes filled with concrete. It is developed and evolved on the basis of steel concrete and reinforced concrete with spiral stirrups. The existence of steel pipes can prevent premature cracking of concrete, and the existence of concrete can prevent premature buckling of steel pipes. Working together, the two can give full play to the advantages of high tensile properties of steel and good compressive properties of concrete, so they have high bearing capacity, plasticity and It has many advantages such as good toughness, good seismic performance, significant economic benefits, and construction environmental protection. It has a good application prospect in high-rise and super high-rise buildings, and has been widely valued by domestic and foreign engineering fields.

But the connection joint of CFST column is a difficult point in the engineering application of CFST. At present, the most commonly used joints between concrete filled steel tube columns and beams are different in performance due to different connection methods. The main joint forms are outer rib ring plate type, inner diaphragm type and diaphragm through type. In these nodes, the force of the steel beam web cannot be effectively transmitted through the nodes, especially the connection between the column and the beam, which is damaged due to the insufficient shear bearing capacity of the nodes under the action of a large earthquake load, which makes the whole The concrete-filled steel tube joints lose their bearing capacity and fail.

Utility model content

The utility model overcomes the deficiencies in the prior art, and the technical problem to be solved is to provide a shear-resistant steel pipe concrete beam-column node connection structure with reasonable structure, convenient manufacture, strong shear resistance and strong integrity.

In order to solve the above technical problems, the technical solution adopted by the utility model is: a shear-resistant concrete-filled steel pipe beam-column connection structure, including: an upper concrete-filled steel pipe column, a lower steel-filled concrete column, a node structure and a steel beam, and the upper steel pipe The concrete column and the lower concrete-filled steel pipe column are fixedly connected through a node structure, and steel beams are fixed on the circumference of the node structure. Two shear partitions are arranged vertically between the through-plate and the lower through-plate, the shear partitions are intersected, and the space surrounded by the upper through-plate, the lower through-plate and the shear partition is provided with a steel pipe plate pieces.

Preferably, the upper through-board and the lower through-board have the same structure, and both include a square plate and a rectangular plate, the edges of the square plate are butted with rectangular plates, the center of the square plate has a vent hole, and the square plate There are pouring holes at the four corners, the square plates of the upper through plate and the lower through plate are fixedly connected with the bottoms of the upper concrete filled steel pipe column and the lower steel filled concrete column respectively, and the rectangular plate is fixedly connected with the steel beam.

Preferably, the shear diaphragm includes a central plate and a flange web, the flange web is butt-fixed around the central plate, and the upper and lower edges of the shear diaphragm are respectively fixed to the upper through plate and the lower through plate connected, and a through hole is opened in the center of the center plate.

Preferably, the pouring holes are fan-shaped holes.

Preferably, the steel beam is an I-beam.

In the utility model, the core area of the concrete-filled steel pipe joint is divided by cross-set shear partitions, which strengthens the restraint ability of the concrete in the core area of the joint, increases the rigidity of the steel pipe concrete joint and enhances the integrity of the joint, and improves the concrete joint. carrying capacity.

In addition, the upper through-slab, the lower through-slab, and the shear diaphragm all protrude from the steel pipe concrete column wall, and the parts protruding from the wall are welded and fixed to connect with the steel beam, which effectively improves the shear capacity of the joints, and It can quickly and effectively transmit the bending moment, shear force and axial force on the web of the steel beam, making the force of the joint more clear.

In addition, the utility model has a simple and reasonable structure and is convenient to manufacture.

Description of drawings

Fig. 1 is a structural schematic diagram of a shear-resistant steel pipe concrete beam-column node connection structure of the present invention.

Fig. 2 is a schematic diagram of the node structure in the utility model.

Fig. 3 is a schematic diagram of the internal structure of the node structure in the utility model.

In the figure: 1 is the upper steel tube concrete column, 2 is the lower steel tube concrete column, 3 is the node structure, 4 is the steel beam, 5 is the upper through plate, 6 is the lower through plate, 7 is the shear diaphragm, 8 is the steel tube plate 9 is a square plate, 10 is a rectangular plate, 11 is a vent hole, 12 is a pouring hole, 13 is a center plate, 14 is a flange web, and 15 is a through hole.

Detailed ways

Specific embodiments of the present utility model will be further described below in conjunction with accompanying drawings.

As shown in Figure 1, a shear-resisting CFST beam-column joint structure includes: an upper CFST column 1, a lower CFST column 2, a node structure 3 and a steel beam 4, an upper CFST column 1, and a lower CFST column 2 is fixedly connected through the node structure 3, the circumference of the node structure 3 is fixed with a steel beam 4, the connection node 3 includes the upper through-slab 5, the lower through-slab 6, the shear diaphragm 7 and the steel pipe plate 8, the upper through-slab 5 and the Two shear partitions 7 are arranged vertically between the lower through-boards 6, and the shear partitions 7 are arranged crosswise, and the space surrounded by the upper through-wall 5, the lower through-board 6 and the shear partition 7 is provided with steel pipe plates 8. Concrete is poured into the upper concrete-filled steel tube column 1, and the concrete enters the interior of the joint structure 3 through the upper through-slab 5, and then enters the lower concrete-filled steel tube column 2 through the lower through-slab 6 to form a steel-steel concrete column, and then steel beams 4 are welded around the joint structure , the formed connection nodes have strong integrity, stable and reliable structure, and the steel beam 4 is an I-shaped steel beam.

As shown in Figure 2, in order to better make the internal pouring effect of the node structure 3 better and enhance the overall reliability, the upper through plate 5 and the lower through plate 6 have the same structure, including a square plate 9 and a rectangular plate 10. A rectangular plate 10 is butt-fixed around the edge of the plate 9, and the center of the square plate 9 is provided with a ventilation hole 11, and the four corners of the square plate 9 are provided with pouring holes 12, and the pouring hole 12 adopts a fan-shaped hole, and the upper through plate 5 and the lower through plate 6 The square plate is welded and fixedly connected to the bottom of the upper concrete-filled steel tube column 1 and the lower steel tube concrete column 2 respectively, and the rectangular plate 10 is fixedly connected to the steel beam 4 . Concrete enters the area divided by the corresponding shear partitions 7 through the pouring holes 12 at the four corners, and the air holes 11 are used for ventilation to facilitate pouring.

As shown in Figure 3, in order to enhance the overall reliability more effectively and enhance the shear capacity of the nodes, the shear diaphragm 7 includes a central plate 13 and a flange web 14, and the flanges are butted and fixed around the central plate 13 The web 14 , the upper and lower edges of the shear partition 7 are fixedly connected to the upper through plate 5 and the lower through plate 6 respectively, and a through hole 15 is opened in the center of the center plate 13 . Two shear partitions 7 are vertically intersected to divide the interior of the node into four areas. At the same time, the shear partitions 7 are welded and fixed to the upper through-plate 5 and the lower through-plate 6 respectively. The center plate 13 has a through hole 15. The four areas that are conveniently divided are connected to each other, and the pouring is integrated to enhance the overall reliability and bearing capacity. The flange web 14 is welded and fixedly connected with the upper through plate 5, the lower through plate 6, and the steel beam 4 to enhance the shear resistance of the joints. ability, and can quickly and effectively transmit the bending moment, shear force and axial force on the web of the steel beam, making the force of the joint more clear.

The above embodiments of the utility model have been described in detail in conjunction with the accompanying drawings, but the utility model is not limited to the above-mentioned embodiments. The various changes made below should also be regarded as the protection scope of the present utility model.

Claims (5)

1. a shearing resistance connecting structure for steel tube concrete beam and column node, comprise: upper steel core concrete column (1), lower steel core concrete column (2), node structure (3) and girder steel (4), described upper steel core concrete column (1), lower steel core concrete column (2) is fixedly connected with by node structure (3), on the circumference of described node structure (3), be fixed with girder steel (4), it is characterized in that: described connected node (3) comprises run-through board (5), lower run-through board (6), shearing resistance dividing plate (7) and steel pipe plate (8), between described upper run-through board (5) and lower run-through board (6), be vertically provided with two shearing resistance dividing plates (7), described shearing resistance dividing plate (7) is arranged in a crossed manner, described upper run-through board (5), the spatial placement that lower run-through board (6) and shearing resistance dividing plate (7) surround has steel pipe plate (8).

2. a kind of shearing resistance connecting structure for steel tube concrete beam and column node according to claim 1, it is characterized in that: described upper run-through board (5) is identical with the structure of lower run-through board (6), the side's of including plate (9) and rectangular slab (10), the edge docking of described side's plate (9) is fixed with rectangular slab (10), described side's plate (9) center has air vent (11), four jiaos of side's plate (9) have plug hole (12), the square plate of described upper run-through board (5) and lower run-through board (6) respectively with upper steel core concrete column (1), the bottom of lower steel core concrete column (2) is fixedly connected with, rectangular slab (10) is fixedly connected with girder steel (4).

3. a kind of shearing resistance connecting structure for steel tube concrete beam and column node according to claim 2, it is characterized in that: described shearing resistance dividing plate (7) comprises central plate (13) and edge of a wing web (14), the surrounding docking of described central plate (13) is fixed with edge of a wing web (14), the upper lower limb of described shearing resistance dividing plate (7) is fixedly connected with upper run-through board (5), lower run-through board (6) respectively, and the center of described central plate (13) has through hole (15).

4. a kind of shearing resistance connecting structure for steel tube concrete beam and column node according to claim 2, is characterized in that: described plug hole (12) is scallop hole.

5. a kind of shearing resistance connecting structure for steel tube concrete beam and column node according to claim 1, is characterized in that: described girder steel (4) is steel I-beam.