CN115977317B - A modular steel tube concrete column connection structure - Google Patents

Abstract

The invention discloses a modularized concrete filled steel tubular column connecting structure, which comprises a base, wherein the base is fixed on the surface of a foundation, a cannula is fixedly connected to the top end of the base, reinforcing pieces are fixedly connected to the four side walls of the cannula respectively, and extrusion parts are connected to the four side walls of the cannula in a sliding manner respectively; the steel tube concrete column is arranged above the base, the bottom end of the steel tube concrete column is provided with a raised head, the bottom end of the raised head is provided with a slot, the inner wall of the slot is matched with one side of the reinforcing piece far away from the insertion tube, the inner wall of the top end of the slot is fixedly connected with a driving frame, one end of the extrusion piece far away from the driving frame is abutted with the inner wall of the slot through the driving frame, and the bottom end of the steel tube concrete column is connected with the top end of the base through a connecting piece; grouting holes are formed in the side wall of the concrete filled steel tube column, the grouting ends of the grouting holes are communicated with the inside of the driving frame, and the inside of the driving frame is communicated with the outside of the insertion tube. The invention can improve the connection strength between the bottom end of the steel tube concrete column and the foundation.

Description

A modular steel tube concrete column connection structure

Technical field

The invention belongs to the technical field of steel tube concrete columns, and in particular relates to a modular steel tube concrete column connection structure.

Background technique

In recent years, modular steel tube concrete columns have become more and more popular due to their advantages such as fast construction speed. They are usually prefabricated in factories and then transported to the site for assembly through connecting structures.

In the existing technology, modular concrete-filled steel tube columns are fixed on the foundation. H-shaped steel is usually fixed on the surface of the foundation. An inner groove is provided at the bottom of the modular concrete-filled steel tube column to accommodate the H-shaped steel. The H-shaped steel is inserted into the inner groove and bolted Connect the concrete-filled steel tube column to the H-shaped steel, and finally pour concrete outside the connection between the two to realize the installation of the concrete-filled steel tube column.

Under this setting, the connection strength is poor only through bolt connection and concrete pouring. Therefore, a modular concrete-filled steel tube column connection structure is provided to improve the connection strength between the bottom end of the concrete-filled steel tube column and the foundation.

Contents of the invention

In order to solve the above technical problems, the present invention proposes a modular concrete-filled steel tube column connection structure, which can improve the connection strength between the bottom end of the concrete-filled steel tube column and the foundation.

In order to achieve the above object, the present invention provides a modular steel tube concrete column connection structure, including:

The base is fixed on the surface of the foundation. The top of the base is fixed with a cannula. The four side walls of the cannula are respectively fixed with reinforcements. The four side walls of the said cannula are respectively slidably connected with extrusion pieces;

A concrete-filled steel tube column is arranged above the base and has a protruding head at the bottom end. A slot is provided at the bottom end of the protruding head. The inner wall of the slot is adapted to the side of the reinforcement member away from the intubation tube. , a driving frame is fixedly connected to the inner wall of the top of the slot, the end of the extrusion piece away from the driving frame is in contact with the inner wall of the slot through the driving frame, and the bottom end of the concrete-filled steel tube column is connected to the inner wall of the slot through a connecting piece. The top of the base is connected;

A grouting hole is opened on the side wall of the concrete-filled steel tube column. The grouting end of the grouting hole is connected to the inside of the driving frame, and the inside of the driving frame is connected to the outside of the intubation tube.

Further, the extrusion piece is a plurality of extrusion plates, and a plurality of the extrusion plates are arranged sequentially from top to bottom on the side wall of the intubation tube. The extrusion plates penetrate the cannula and are connected with the intubation tube. Slidingly connected, one end of the extrusion plate close to the inner wall of the slot abuts against the inner wall of the slot.

Further, one end of the extrusion plate close to the inner wall of the slot is fixedly connected with an arc-shaped block, and one end of the arc-shaped block away from the extrusion plate is an arc-shaped structure. The inner wall of the slot is provided with an arc-shaped block. The end surface of the arc-shaped block is adapted to a groove, and the arc-shaped block is located in the groove and abuts against the inner wall of the slot.

Further, the driving frame includes an extrusion tube, the top end of the extrusion tube is fixed to the top end of the inner wall of the slot, and the bottom end of the extrusion tube is located in the insertion tube and between the top end of the base and the top end of the extrusion tube. There is a gap between them, the bottom end area of the extrusion tube is smaller than the top area of the extrusion tube, and one end of the extrusion plate is in contact with the outer wall of the extrusion tube.

Further, the side wall of the extruded tube is provided with a plurality of first through holes, the inside of the extruded tube is connected to the inside of the intubation tube through the first through holes, and the side wall of the intubation tube is provided with a plurality of second through holes. hole, the inside of the cannula is connected to the outside of the cannula through the second through hole, and the grouting end of the grouting hole is located above the extrusion tube and communicates with the inside of the extrusion tube.

Further, the reinforcement includes two reinforcement ribs fixed on the side wall of the cannula, the two reinforcement ribs are arranged oppositely, the extrusion plate is located between the two reinforcement ribs, and there are openings on the reinforcement ribs. There are several third through holes.

Further, a plurality of fourth through holes are opened on the reinforcing ribs, the third through holes are spaced apart from the fourth through holes, and a reinforcing steel bar is inserted through the fourth through holes at the same height, so The reinforcing steel bars are sleeved on the outside of the intubation tube.

Further, the connecting piece includes a connecting plate fixedly connected to the bottom end of the protruding head. A through-slot matching the bottom end of the slot is provided in the center of the connecting plate. The four corners of the connecting plate are threadedly connected to each other. Connecting bolts, the end of the connecting bolt is threadedly connected to the top of the base, the top of the connecting plate is fixed with an external connecting rib, the top of the external connecting rib is fixed with the bottom end of the concrete-filled steel tube column.

Compared with the existing technology, the present invention has the following advantages and technical effects:

By arranging the extrusion piece in the intubation tube, under the action of the drive frame, the extrusion piece abuts and squeezes the inner wall of the slot, and at the same time, a reinforcement is arranged outside the intubation tube. On the above basis, through injection The grouting hole is injected into the reinforcing frame, and the concrete is filled with the lower reinforcing frame, between the reinforcing frame and the inner wall of the intubation tube, and between the outer wall of the intubation tube and the inner wall of the slot. Compared with the existing connection and fixation only through connecting bolts, the connection is improved. strength.

Description of the drawings

The drawings that form a part of this application are used to provide a further understanding of this application. The illustrative embodiments and descriptions of this application are used to explain this application and do not constitute an improper limitation of this application. In the attached picture:

Figure 1 is a three-dimensional view of the connection relationship between the base and the concrete-filled steel tube column;

Figure 2 is an exploded view of the connection relationship between the base and the concrete-filled steel tube column;

Figure 3 is a perspective view of the connection relationship between the base and the cannula;

Figure 4 is a cross-sectional view of the connection relationship between the cannula and the extruded tube;

Figure 5 is a cross-sectional view of the connection relationship between the extruded tube and the protruding head;

Among them, 1-base, 2-intubation, 3-steel concrete column, 4-convex head, 5-slot, 6-grouting hole, 7-extrusion plate, 8-arc block, 9-groove , 10-Extruded tube, 11-First through hole, 12-Second through hole, 13-Reinforcing rib, 14-Third through hole, 15-Fourth through hole, 16-Reinforced steel bar, 17-Connecting plate, 18-Through slot, 19-Connecting bolt, 20-External connecting rib.

Detailed ways

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts fall within the scope of protection of the present invention.

In order to make the above objects, features and advantages of the present invention more obvious and understandable, the present invention will be described in further detail below with reference to the accompanying drawings and specific embodiments.

Referring to Figures 1-5, the present invention provides a modular steel tube concrete column connection structure, including a base 1, fixed on the surface of the foundation, an intubation tube 2 fixed on the top of the base 1, and the four side walls of the intubation tube 2 are fixed respectively. Reinforcements are connected, and the four side walls of the intubation tube 2 are respectively slidably connected with extrusion parts; the concrete-filled steel tube column 3 is arranged above the base 1 and has a protruding head 4 at the bottom, and a slot 5 is provided at the bottom of the protruding head 4 , the inner wall of the slot 5 is adapted to the side of the reinforcement away from the intubation tube 2, the top inner wall of the slot 5 is fixed with a drive frame, the end of the extrusion piece away from the drive frame is in contact with the inner wall of the slot 5 through the drive frame, and the steel tube concrete The bottom end of the column 3 is connected to the top of the base 1 through a connector; the grouting hole 6 is opened on the side wall of the concrete-filled steel tube column 3. The grouting end of the grouting hole 6 is connected to the inside of the driving frame, and the inside of the driving frame is connected to the outside of the intubation tube 2. Connected.

When installing the concrete-filled steel tube column 3, the base 1 is fixedly installed on the foundation in advance, and the intubation tube 2 is fixed on the base 1. The intubation tube 2 is a hollow structure with an inner wall, and is connected to the outer wall of the intubation tube 2 correspondingly. Reinforcing parts, place extruded parts on the side walls of the intubation tube 2, transport the concrete-filled steel tube column 3 to the construction site, lift the concrete-filled steel tube column 3 by a crane or other equipment, and align the slot 5 on the protruding head 4 The top of the tube 2, and manually adjust the position of the protruding head 4, so that the intubation tube 2 and the reinforcing member enter the slot 5. During the falling process of the protruding head 4, the side wall of the drive frame in the slot 5 comes into contact with the extrusion piece. , the drive frame pushes the extrusion piece to move and contact the inner wall of the slot 5. After the concrete-filled steel tube column 3 has finished falling, the bottom end of the concrete-filled steel tube column 3 and the top end of the base 1 are connected through the connector, and then the grouting hole 6 is injected. Slurry, the concrete slurry flows into the driving frame, and flows into the intubation tube 2 and out of the intubation tube 2 through the driving frame. After the filling is completed, concrete is poured and cured on the outside of the boss 4 and the outside of the base 1, and finally the concrete-filled steel tube column is realized. 3 installation.

In a specific embodiment of the present invention, when placing an extrusion piece on the side wall of the intubation tube 2, it is necessary to ensure that the outer end of the extrusion piece cannot protrude beyond the reinforcement to avoid the extrusion piece from affecting the installation of the concrete-filled steel tube column 3.

For further optimization, refer to Figures 2 and 3. The extrusion parts are a plurality of extrusion plates 7, which are arranged sequentially from top to bottom on the side wall of the cannula 2. The extrusion plates 7 penetrate the cannula 2 and are connected with the cannula 2. The tube 2 is slidably connected, and the end of the extrusion plate 7 close to the inner wall of the slot 5 is in contact with the inner wall of the slot 5 .

It can be understood that the extrusion plate 7 moves toward the inner wall of the slot 5 under the action of the drive frame. Under the preliminary design, after the concrete-filled steel tube column 3 is installed, the end of the extrusion plate 7 just contacts the inner wall of the slot 5. And exert a certain force without causing the concrete-filled steel tube column 3 to be unable to be sent to the predetermined position.

Furthermore, a number of through holes (not shown in the figure) are provided at the top of the extrusion plate 7, and the through holes are used to pass concrete mud, thereby improving the connection strength between the extrusion plate 7 and the concrete.

To further optimize the solution, refer to Figures 3 and 4. One end of the extrusion plate 7 close to the inner wall of the slot 5 is fixed with an arc block 8. The end of the arc block 8 away from the extrusion plate 7 is an arc structure. The inner wall of the slot 5 A groove 9 is provided that matches the end surface of the arc-shaped block 8 . The arc-shaped block 8 is located in the groove 9 and abuts against the inner wall of the slot 5 . A groove 9 is provided on the inner wall of the slot 5. On the one hand, it is convenient to position the arc block 8 and the extrusion plate 7. Under the push of the driving frame, the arc block 8 can move to a predetermined position. At the same time, the arc block 8 and the concave The slot 9 is suitable for snap connection. Under this setting, the arc-shaped block 8 is less likely to deviate, thereby improving the connection strength.

For further optimization, refer to Figure 5. The drive frame includes an extrusion tube 10. The top end of the extrusion tube 10 is fixedly connected to the top end of the inner wall of the slot 5. The bottom end of the extrusion tube 10 is located in the intubation tube 2 and between the top end of the base 1. There is a gap, the bottom area of the extrusion tube 10 is smaller than the top area of the extrusion tube 10 , and one end of the extrusion plate 7 is in contact with the outer wall of the extrusion tube 10 .

It can be understood that the squeeze tube 10 is located in the slot 5. When the 2 sets of insert tubes enter the slot 5, the bottom end of the squeeze tube 10 does not enter the insert tube 2. After the steel tube concrete column 3 moves a certain distance, the squeeze tube The pressing tube 10 enters the cannula 2 and presses the pressing plate 7 . Under this setting, when installing the concrete-filled steel tube column 3, it is only necessary to ensure the positioning of the intubation tube 2 and the slot 5. This connection method is easy to install and has a short construction period.

For further optimization, refer to Figure 5. A number of first through holes 11 are provided on the side wall of the extruded tube 10. The interior of the extruded tube 10 is connected to the inside of the intubation tube 2 through the first through holes 11. The side wall of the extruded tube 10 is provided with a number of first through holes 11. There are two through holes 12. The inside of the intubation tube 2 is connected to the outside of the intubation tube 2 through the second through hole 12. The grout outlet end of the grouting hole 6 is located above the extrusion tube 10 and communicates with the inside of the extrusion tube 10.

It can be understood that the first through hole 11 is used to connect the inside of the extrusion tube 10 and the inside of the intubation tube 2, grouting is injected into the extrusion tube 10 through the grouting hole 6, and then enters into the intubation tube 2 through the first through hole 11. The concrete slurry flows outside the insert tube 2 through the second through hole 12, that is, into the slot 5. After the concrete column is solidified, the concrete slurry fills the first through hole 11 and the second through hole 12, so that the squeeze tube 10, the insert tube 2, and the insert tube 2 are squeezed. The inner wall of the groove 5 forms an integral body, thereby improving its connection strength.

For further optimization, refer to Figures 2 and 3. The reinforcement includes two reinforcement ribs 13 fixed on the side wall of the cannula 2. The two reinforcement ribs 13 are arranged oppositely. The extrusion plate 7 is located between the two reinforcement ribs 13. The reinforcement ribs 13 A plurality of third through holes 14 are opened thereon.

The reinforcing rib 13 is used to increase the surface area of the intubation tube 2. At the same time, a third through hole 14 is opened on the reinforcing rib 13 so that the grouting operation can be performed between two adjacent reinforcing ribs 13 on different side walls. This arrangement makes the reinforcing rib 13 forms an integral body with the inner wall of slot 5 .

In one embodiment of the present invention, the reinforcing rib 13 and the cannula 2 are integrally formed structures, which are prefabricated in the factory to facilitate subsequent installation.

In another embodiment of the present invention, the reinforcing ribs 13 are welded to the intubation pipe 2 after the intubation pipe 2 is installed. The number of the reinforcing ribs 13 can be optionally increased according to actual construction conditions.

For further optimization, refer to Figure 3. A number of fourth through holes 15 are opened on the reinforcing ribs 13. The third through holes 14 and the fourth through holes 15 are spaced apart. The fourth through holes 15 at the same height are provided with a reinforcing steel bar. 16. The reinforcing steel bar 16 is set on the outside of the intubation tube 2. The fourth through hole 15 is used to pass through the reinforcing steel bar 16. The reinforcing steel bar 16 has a ring-shaped structure and is sleeved on the outside of the intubation tube 2, which can improve the connection effect of the multiple reinforcing ribs 13.

To further optimize the solution, refer to Figure 4. The connector includes a connecting plate 17 fixedly connected to the bottom end of the protruding head 4. The center of the connecting plate 17 is provided with a through slot 18 that matches the bottom end of the slot 5. The four corners of the connecting plate 17 are threaded. There are connecting bolts 19, and the ends of the connecting bolts 19 are threadedly connected to the top of the base 1. The top of the connecting plate 17 is fixedly connected with an external connecting rib 20, and the top of the external connecting rib 20 is fixedly connected to the bottom end of the concrete-filled steel tube column 3. Under this setting, on the basis of connecting the boss 4 and the base 1 through grouting, a connecting plate 17 is set, and the concrete-filled steel tube column 3 is placed at a predetermined position, that is, the bottom end of the connecting plate 17 is in contact with the top end of the base 1, and then through the connecting bolt 19 for connection and fixation to further improve the fixation effect.

Specifically, the connecting bolts 19 are preferably fixed with 10.9S grade high-strength bolts.

Further, after the above operations are completed, a hoarding is fixed on the outside of the bottom of the concrete-filled steel tube column 3 and the outside of the base 1, and concrete is poured into the cavity formed by the hoarding. After the final curing is completed, the installation of the concrete-filled steel tube column 3 is completed.

The above are only preferred specific implementations of the present application, but the protection scope of the present application is not limited thereto. Any person familiar with the technical field can easily think of changes or substitutions within the technical scope disclosed in the present application. All are covered by the protection scope of this application. Therefore, the protection scope of this application should be subject to the protection scope of the claims.

Claims (3)

1. A modular steel tube concrete column connection structure, characterized by: including, The base (1) is fixed on the surface of the foundation. The top of the base (1) is fixed with a cannula (2). The four side walls of the cannula (2) are respectively fixed with reinforcements. The cannula (2) is fixed on the surface of the foundation. (2) The four side walls are slidingly connected with extrusion pieces; The concrete-filled steel tube column (3) is arranged above the base (1) and has a protruding head (4) at the bottom. A slot (5) is provided at the bottom of the protruding head (4). The slot (5) 5) The inner wall is adapted to the side of the reinforcement member away from the intubation tube (2). A drive frame is fixed to the inner wall of the top end of the slot (5), and the end of the extrusion member away from the drive frame passes through The drive frame is in contact with the inner wall of the slot (5), and the bottom end of the concrete-filled steel tube column (3) is connected to the top end of the base (1) through a connector; The grouting hole (6) is opened on the side wall of the concrete-filled steel tube column (3). The grouting end of the grouting hole (6) is connected with the inside of the driving frame, and the inside of the driving frame is connected with the intubation tube. (2) External connectivity; The extrusion piece is a plurality of extrusion plates (7), which are arranged sequentially from top to bottom on the side wall of the intubation tube (2), and the extrusion plates (7) penetrate all the extrusion plates (7). The intubation tube (2) is slidably connected to the intubation tube (2), and one end of the extrusion plate (7) close to the inner wall of the slot (5) is in contact with the inner wall of the slot (5); The drive frame includes an extrusion tube (10). The top end of the extrusion tube (10) is fixedly connected to the top end of the inner wall of the slot (5). The bottom end of the extrusion tube (10) is located on the intubation tube. (2) There is a gap between the top of the base (1) and the bottom of the extrusion tube (10). The bottom area of the extrusion tube (10) is smaller than the top area of the extrusion tube (10). The extrusion plate (7) ) is in contact with the outer wall of the extruded tube (10); The connecting piece includes a connecting plate (17) fixedly connected to the bottom end of the protruding head (4), and a through slot (17) matching the bottom end of the slot (5) is provided in the center of the connecting plate (17). 18), the four corners of the connecting plate (17) are threaded with connecting bolts (19), the ends of the connecting bolts (19) are threadedly connected to the top of the base (1), and the top of the connecting plate (17) is fixed. It is connected with an external connecting rib (20), and the top end of the external connecting rib (20) is fixedly connected to the bottom end of the concrete-filled steel tube column (3); An arc-shaped block (8) is fixedly connected to one end of the extrusion plate (7) close to the inner wall of the slot (5), and an arc-shaped block (8) is connected to one end of the arc-shaped block (8) away from the extrusion plate (7). shaped structure, the inner wall of the slot (5) is provided with a groove (9) that matches the end face of the arc-shaped block (8), and the arc-shaped block (8) is located in the groove (9) and Contact with the inner wall of the slot (5); A number of first through holes (11) are provided on the side wall of the extruded tube (10), and the inside of the extruded tube (10) is connected to the inside of the intubation tube (2) through the first through holes (11). , the side wall of the cannula (2) is provided with a number of second through holes (12), the inside of the cannula (2) is connected to the outside of the cannula (2) through the second through holes (12), The grout outlet end of the grouting hole (6) is located above the extrusion tube (10) and communicates with the inside of the extrusion tube (10). 2. The modular steel tube concrete column connection structure according to claim 1, characterized in that: the reinforcement includes two reinforcement ribs (13) fixed on the side walls of the intubation tube (2), and the two reinforcements The ribs (13) are arranged oppositely, and the extrusion plate (7) is located between the two reinforcing ribs (13). A number of third through holes (14) are opened in the reinforcing ribs (13). 3. The modular steel tube concrete column connection structure according to claim 2, characterized in that: the reinforcing ribs (13) are provided with a number of fourth through holes (15), and the third through holes (14) are connected to The fourth through holes (15) are arranged at intervals, and a reinforcing steel bar (16) is inserted through the fourth through holes (15) at the same height. The reinforcing steel bar (16) is sleeved on the intubation tube (16). 2) Outside.