Fabricated concrete frame node connecting structure

Abstract

The utility model provides an assembly type concrete frame node connecting structure which comprises a prefabricated concrete upper column and a prefabricated concrete lower column, and an upper column steel pipe and a lower column steel pipe are embedded in the connecting end of the prefabricated concrete upper column and the connecting end of the prefabricated concrete lower column respectively. A plurality of correspondingly protruding upper column steel pipe flanges and lower column steel pipe flanges are arranged on the peripheral sides of the upper column steel pipe and the lower column steel pipe; two web connecting plates in mortise and tenon joint are arranged in the upper column steel pipe and the lower column steel pipe, the two sides of each web connecting plate are in mortise and tenon joint with the end of the upper column steel pipe and the end of the lower column steel pipe respectively, and the ends of the web connecting plates are used for being connected with precast beams. The flange connecting plates are locked and fixed with the flange positioning holes of the upper column and the lower column, then the steel pipes of the upper column and the lower column are welded and connected, the purposes of horizontal and vertical adjustment, self-fixing and self-supporting are achieved, and the problem that column corner longitudinal bars are difficult to overlap and weld on the double faces of the corners of the steel pipes is solved; the purposes of tension resistance, compression resistance, torsion resistance and bending resistance are achieved, and the overall stability of the structure is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to the field of assembly type building, concretely relates to a kind of assembly type concrete frame joint connecting structure. BACKGROUND

[0002] The steel component pre-buried at the upper column end and the lower column end can be used as a connecting medium and a force member of the joint, which facilitates installation and construction and enhances the performance of the structure. With the improvement of industrial automation and the wide application of assembly type concrete frame structure, the connection mode and structure of concrete frame structure are becoming more and more diverse.

[0003] In the prior art, a rectangular steel pipe is pre-buried at the column end, and the upper and lower columns are connected by bolts and flanges. Although this connection mode is reliable, it requires a large amount of steel and a large number of high-strength bolts, which makes the engineering application uneconomical. In addition, the rectangular steel pipe has no flange protrusion, and the longitudinal reinforcement at the corner of the column is welded to the steel pipe, which has obvious problems and the welding quality is difficult to guarantee. At the same time, in order to meet the requirements of bolt margin and spacing, the flange plate easily protrudes from the edge of the column or does not meet the requirements of the concrete cover.

[0004] Therefore, how to reduce the amount of steel and the number of high-strength bolts and achieve reliable connection of the joint, while solving the problems of unreasonable structure and stress, has become a technical problem that needs to be solved by technical personnel in the field. CONTENT OF THE UTILITY MODEL

[0005] The main purpose of the utility model is to provide an assembly type concrete frame joint connecting structure to solve the problems in the background art.

[0006] To solve the above technical problems, the utility model adopts the technical scheme of: including a prefabricated concrete upper column and a prefabricated concrete lower column, an upper column steel pipe and a lower column steel pipe are pre-buried at the connecting end of the prefabricated concrete upper column and the prefabricated concrete lower column, a plurality of upper column steel pipe flanges and lower column steel pipe flanges corresponding to the flanges are arranged on the circumferential side of the upper column steel pipe and the lower column steel pipe, and the corresponding flanges are locked and fixed by flange connecting plates and bolts.

[0007] The upper column steel pipe and the lower column steel pipe are provided with two web plates connected by mortise and tenon joints, the two sides of the web plate are mortise and tenon jointed at the end of the upper column steel pipe and the lower column steel pipe, and the end of the web plate is used for connecting with the prefabricated beam.

[0008] Preferably, the opposite side of the two web plates is provided with a second mortise and tenon groove, and the two web plates are cross mortise and tenon jointed through the second mortise and tenon groove.

[0009] The web connecting plate is provided with a plurality of first mortise and tenon grooves on both sides, a plurality of third mortise and tenon grooves and fourth mortise and tenon grooves are arranged on the end of the upper column steel pipe and the lower column steel pipe, and the first mortise and tenon grooves are mortised in the third mortise and tenon grooves and the fourth mortise and tenon grooves.

[0010] Preferably, the lower column steel pipe is provided with a lining plate on the inner side of the top of the lower column steel pipe.

[0011] In the installation, the lining plate is abutted against the inner wall of the upper column steel pipe.

[0012] Preferably, the bottom of the upper column steel pipe is abutted against the lower column steel pipe, and the bottom of the upper column steel pipe is provided with a bevel on each side for welding and fixing with the lower column steel pipe.

[0013] Preferably, the upper column steel pipe is provided with a plurality of upper column steel pipe flanges on the circumferential side, and the upper column steel pipe flanges are provided with a plurality of upper column flange positioning holes.

[0014] The lower column steel pipe is provided with a plurality of lower column steel pipe flanges on the circumferential side, and the lower column steel pipe flanges are provided with a plurality of lower column flange positioning holes.

[0015] The upper column steel pipe flanges correspond to the lower column steel pipe flanges, and the flange connecting plate is connected with the upper column steel pipe and the lower column steel pipe by penetrating the upper column flange positioning holes and the lower column flange positioning holes through bolts.

[0016] Preferably, the upper column steel pipe is provided with an upper column inner partition plate, and a gas outlet pipe and a grouting pipe are embedded in the prefabricated concrete upper column, one end of the gas outlet pipe and the grouting pipe is flush with the forming surface of the prefabricated concrete upper column, the other end of the gas outlet pipe is communicated with the upper column inner partition plate, and the other end of the grouting pipe penetrates through the upper column inner partition plate to the lower column steel pipe.

[0017] Preferably, the upper column middle part longitudinal reinforcement around the prefabricated concrete upper column is double-sided lap-welded on the outer wall of the upper column steel pipe, and the upper column corner part longitudinal reinforcement at four corners is double-sided lap-welded on one side of the outer wall of the upper column steel pipe and on the other side of the outer wall of the upper column steel pipe flange.

[0018] The lower column middle part longitudinal reinforcement around the prefabricated concrete lower column is double-sided lap-welded on the outer wall of the lower column steel pipe, and the lower column corner part longitudinal reinforcement at four corners is double-sided lap-welded on one side of the outer wall of the lower column steel pipe and on the other side of the outer wall of the lower column steel pipe flange.

[0019] Preferably, the upper column steel pipe and the lower column steel pipe are welded by four steel plates to form a rectangle, the protruding part of the steel plate is a flange, and the upper column steel pipe and the lower column steel pipe have the same structure.

[0020] Preferably, the web connecting plate is provided with a plurality of grouting holes in the middle.

[0021] The utility model provides a kind of assembled concrete frame joint connecting structure, and beneficial effect is as follows:

[0022] 1. The bolt flange connection is solved due to the bolt hole edge distance and the spacing requirement and the contradiction between the outermost edge of the flange plate and the insufficient concrete protective layer, which realizes that the column bolt hole opening meets the specification and meets the size requirement of the concrete protective layer;

[0023] 2. The column corner longitudinal reinforcement can be welded on the same steel plate when the rectangular steel pipe is double-sided lap welded, which avoids the overlapping of welds and welding quality problems;

[0024] 3. The upper and lower column steel pipes have flanges, and the flanges of the steel pipes extending out of the concrete column body part can adjust the horizontal and vertical problems of the upper and lower columns, without the need for separately welding the ear plates connecting the upper and lower column bodies on site, which can better adjust the horizontal and vertical degrees of the upper and lower columns and greatly reduce the construction cost and labor cost;

[0025] 4. The upper column and the lower column are fixed by using bolts and flange connecting plates, which can realize self-supporting, without the need for scaffolding and supporting devices during assembly, saving labor cost and shortening the construction period;

[0026] 5. The beam-column connection joint is connected by mortise and tenon connection and welding, which achieves the purposes of tensile, compression, torsion and bending, and improves the overall stability of the structure. BRIEF DESCRIPTION OF DRAWINGS

[0027] The utility model will be further described in connection with the drawings and embodiments:

[0028] Figure 1 is the overall structure of the utility model axial side view;

[0029] Figure 2 is the connection explosion view of the utility model Figure 1 ;

[0030] Figure 3 is the perspective view of the utility model Figure 1 ;

[0031] Figure 4 is the front view of the upper column steel pipe and the lower column steel pipe connection of the utility model;

[0032] Figure 5 is another sectional view of the utility model Figure 4 ;

[0033] Figure 6 is the first structure of the upper column steel pipe and the lower column steel pipe of the utility model ;

[0034] Figure 7 is the second structure of the upper column steel pipe and the lower column steel pipe of the utility model ;

[0035] Figure 8 is the third structure of the upper column steel pipe and the lower column steel pipe of the utility model

[0036] Figure 9 The fourth structure of the upper column steel pipe and the lower column steel pipe is provided in the utility model;

[0037] In the drawing: prefabricated concrete upper column 1; upper column corner longitudinal reinforcement 101; upper column stirrup 102; upper column middle longitudinal reinforcement 103; air outlet pipe 2; grouting pipe 3; web connecting plate 4; grouting hole 401; first mortise and tenon groove 402; second mortise and tenon groove 403; prefabricated concrete lower column 5; lower column corner longitudinal reinforcement 501; lower column stirrup 502; lower column middle longitudinal reinforcement 503; upper column steel pipe 6; bevel 601; upper column steel pipe flange 602; upper column flange positioning hole 603; upper column inner partition plate 604; third mortise and tenon groove 605; lower column steel pipe 7; lower column steel pipe flange 701; lower column flange positioning hole 702; lower column inner partition plate 703; fourth mortise and tenon groove 704; flange connecting plate 8; lining plate 9. DETAILED DESCRIPTION

[0038] As Figures 1-9 shown in the drawing, a fabricated concrete frame node connecting structure, comprising prefabricated concrete upper column 1 and prefabricated concrete lower column 5, upper column steel pipe 6 and lower column steel pipe 7 are respectively embedded at the connecting end of prefabricated concrete upper column 1 and prefabricated concrete lower column 5, a plurality of upper column steel pipe flanges 602 and lower column steel pipe flanges 701 corresponding to the protrusions are arranged on the circumferential side of upper column steel pipe 6 and lower column steel pipe 7, and the corresponding flanges are fixed by flange connecting plate 8 and bolt locking.

[0039] Two web connecting plates 4 are arranged in upper column steel pipe 6 and lower column steel pipe 7, and the two sides of web connecting plate 4 are respectively mortise and tenon connected at the end of upper column steel pipe 6 and lower column steel pipe 7, and the end of web connecting plate 4 is used for mounting and fixing the prefabricated beam.

[0040] Prefabricated concrete upper column 1 and prefabricated concrete lower column 5 are connected by abutting each other through upper column steel pipe 6 and lower column steel pipe 7, the upper column steel pipe flanges 602 and lower column steel pipe flanges 701 protruding on the circumferential side of upper column steel pipe 6 and lower column steel pipe 7 are connected and locked by flange connecting plate 8 and bolt, so that the locking is realized, the separate welding of the upper and lower ear plates on the site is not needed, the horizontal degree and vertical degree of the upper and lower columns can be better adjusted through the connection and locking of flange connecting plate 8, the problem of double-face welding of column corner longitudinal reinforcement is solved by embedding the flange steel pipe in the concrete part, the protruding part of the concrete column body achieves the adjustment of the horizontal and vertical problems of the upper and lower columns, and the construction cost and labor cost are greatly reduced.

[0041] The end of the two web connecting plates 4 mortise and tenon connected with upper column steel pipe 6 and lower column steel pipe 7 protrudes and is used for connecting the prefabricated beam, and the end of the prefabricated beam embedded with H-shaped steel is connected and locked with the end of web connecting plate 4 through bolt.

[0042] Preferably, the opposite sides of the two web connecting plates 4 are provided with second mortise and tenon grooves 403, and the two web connecting plates 4 are cross mortise and tenoned through the second mortise and tenon grooves 403.

[0043] The two sides of the web connecting plate 4 are provided with a plurality of first mortise and tenon grooves 402, and the end portions of the upper column steel pipe 6 and the lower column steel pipe 7 are provided with a plurality of third mortise and tenon grooves 605 and fourth mortise and tenon grooves 704 corresponding thereto, and the first mortise and tenon grooves 402 are mortise and tenoned in the corresponding third mortise and tenon grooves 605 and fourth mortise and tenon grooves 704.

[0044] The two web connecting plates 4 are cross mortise and tenoned with each other, and the two sides thereof are further mortise and tenoned on the upper column steel pipe 6 and the lower column steel pipe 7, and after being installed and fixed, the web connecting plate 4 is fixed firmly with the upper column steel pipe 6 and the lower column steel pipe 7 by welding. The end portion of the web connecting plate 4 protrudes for connecting the prefabricated beam, and the H-shaped steel embedded in the end portion of the prefabricated beam is connected and locked with the end portion of the web connecting plate 4 by bolts.

[0045] Through the design of multiple mortise and tenon and welding connection, the stability and bearing capacity of the node are greatly improved. The flange connecting plate can better adjust the levelness and perpendicularity of the upper and lower columns, improve the construction efficiency, and ensure the overall quality of the building.

[0046] Preferably, the inner side of the top of the lower column steel pipe 7 is fixedly provided with a lining plate 9, and the lining plate 9 protrudes from the top of the lower column steel pipe 7.

[0047] During installation, the lining plate 9 abuts against the inner wall of the upper column steel pipe 6.

[0048] The design of the lining plate 9 makes the upper and lower column steel pipes not only fixed by the external flange connecting plate 8 and bolts, but also provides early positioning of the upper and lower columns through the internal lining plate 9, which reduces the risk of failure and ensures the quality of the bevel welding.

[0049] Preferably, the bottom of the upper column steel pipe 6 abuts against the lower column steel pipe 7, and each side of the bottom of the upper column steel pipe 6 is provided with a bevel 601 for welding and fixing with the lower column steel pipe 7.

[0050] After the upper column steel pipe 6 is installed and fixed by abutting against the lower column steel pipe 7, it is further fixed by welding.

[0051] Through flange connection positioning and bevel welding and fixing, the connection strength between the upper and lower column steel pipes can be significantly improved, and it is ensured that there will be no loosening or failure when bearing a large load. The lining plate and the bevel make the welding operation easier to control, which can ensure the quality and uniformity of the weld, thereby improving the construction precision.

[0052] Preferably, the periphery of the upper column steel pipe 6 is provided with a plurality of upper column steel pipe flanges 602, and the upper column steel pipe flanges 602 are provided with a plurality of upper column flange positioning holes 603.

[0053] A plurality of lower column steel pipe flanges 701 are arranged on the side of the lower column steel pipe 7, and a plurality of lower column flange positioning holes 702 are arranged on the lower column steel pipe flanges 701;

[0054] The upper column steel pipe flanges 602 correspond to the lower column steel pipe flanges 701, and the flange connecting plates 8 are connected to the upper column steel pipe 6 and the lower column steel pipe 7 by passing through the upper column flange positioning holes 603 and the lower column flange positioning holes 702.

[0055] By arranging the flange positioning holes 603 and 702, the upper and lower column steel pipes can be accurately aligned during installation, avoiding deviation caused by construction errors and enhancing the stability of the overall structure. This design can effectively adjust and ensure the levelness and perpendicularity of the upper and lower columns, improving the overall quality of the building. Compared with the traditional on-site welding method, this connection method greatly simplifies the construction process, reduces the on-site operation time and difficulty, and improves the construction efficiency.

[0056] Preferably, the upper column steel pipe 6 is fixed with an upper column inner partition plate 604, the prefabricated concrete upper column 1 is embedded with an air outlet pipe 2 and a grouting pipe 3, one end of the air outlet pipe 2 and the grouting pipe 3 is flush with the forming surface of the prefabricated concrete upper column 1, the other end of the air outlet pipe 2 communicates with the upper column inner partition plate 604, and the other end of the grouting pipe 3 passes through the upper column inner partition plate 604 to the inside of the lower column steel pipe 7. A plurality of grouting holes 401 are arranged in the middle of the web connecting plate 4.

[0057] When pouring the joint, grouting material is poured into the upper column steel pipe 6 and the lower column steel pipe 7 through the grouting pipe 3, the grouting holes 401 are used for the flow of grouting material in the upper column steel pipe 6 and the lower column steel pipe 7, and the air outlet pipe 2 is used for exhaust.

[0058] The upper column inner partition plate 604 and the lower column inner partition plate 703 improve the stability and carrying capacity of the overall structure of the column. This design makes the construction process more simple and controllable, reduces the need for on-site adjustment, improves the construction efficiency and quality. It is suitable for various complex construction environments and conditions, especially suitable for building projects with high requirements for earthquake resistance and wind resistance.

[0059] Preferably, the upper column middle longitudinal reinforcement 103 around the prefabricated concrete upper column 1 is double-sided lap welded to the outer wall of the upper column steel pipe 6, and the upper column corner longitudinal reinforcement 101 at the four corners is lap welded to one side of the outer wall of the upper column steel pipe 6 and the other side of the outer wall of the upper column steel pipe flange 602.

[0060] The lower column middle longitudinal reinforcement 503 around the prefabricated concrete lower column 5 is double-sided lap welded to the outer wall of the lower column steel pipe 7, and the lower column corner longitudinal reinforcement 501 at the four corners is double-sided lap welded to one side of the outer wall of the lower column steel pipe 7 and the other side of the outer wall of the lower column steel pipe flange 701.

[0061] The design ensures that each position meets the thickness of the concrete protection layer required by the specification, and solves the contradiction between the requirements of the bolt hole edge distance and the spacing and the requirement that the outermost edge of the flange plate has sufficient concrete protection layer. By means of double-sided lap welding, the lap length is reduced and the eccentric stress of the reinforcement is reduced, thereby improving the quality and stability of the reinforcement connection and reducing the construction cost. The longitudinal reinforcement in the middle of the upper and lower columns and the longitudinal reinforcement at the corners of the columns are double-sided lap welded with the flange steel pipe and the flange of the steel pipe, respectively, thereby enhancing the stability and load-bearing capacity of the overall structure. The beam-column connection joint is connected by mortise and tenon connection combined with welding, achieves the purposes of resisting tension, compression, torsion and bending, and improves the overall stability.

[0062] Preferably, as shown in Figures 6-9 The upper column steel pipe 6 and the lower column steel pipe 7 are welded into a rectangle by four steel plates, the protruding part of the steel plate is a flange, and the upper column steel pipe 6 and the lower column steel pipe 7 have the same structure. The appropriate structure is selected according to the site working condition.

[0063] The above-mentioned embodiments are only preferred technical solutions of the present application, and should not be regarded as limiting the present application. The protection scope of the present application should be the technical solutions recited in the claims, including equivalent replacement solutions of the technical features recited in the claims. That is, equivalent replacement improvements within this range are also within the protection scope of the present application.

Claims

1. A fabricated concrete frame joint connection construction comprising a precast concrete upper column (1) and a precast concrete lower column (5), characterized in that: The connecting end of the prefabricated concrete upper column (1) and the prefabricated concrete lower column (5) is respectively embedded with an upper column steel pipe (6) and a lower column steel pipe (7), and the upper column steel pipe (6) and the lower column steel pipe (7) are provided with a plurality of corresponding protruding upper column steel pipe flanges (602) and lower column steel pipe flanges (701) on the circumferential side, and the corresponding flanges are fixed through flange connecting plates (8) and bolts. The upper column steel pipe (6) and the lower column steel pipe (7) are provided with two web connecting plates (4) connected with each other in a mortise and tenon joint manner, the two sides of the web connecting plate (4) are mortise and tenon jointed at the end of the upper column steel pipe (6) and the lower column steel pipe (7), and the end of the web connecting plate (4) is used for mounting and fixing with the prefabricated beam.

2. The prefabricated concrete frame joint connection construction according to claim 1, characterized in that: The opposite side of the two web connecting plates (4) is provided with a second mortise and tenon groove (403), and the two web connecting plates (4) are cross mortise and tenon jointed through the second mortise and tenon groove (403). The two sides of the web connecting plate (4) are provided with a plurality of first mortise and tenon grooves (402), and the end of the upper column steel pipe (6) and the lower column steel pipe (7) is provided with a plurality of corresponding third mortise and tenon grooves (605) and fourth mortise and tenon grooves (704) on the circumferential side, and the first mortise and tenon grooves (402) are mortise and tenon jointed in the corresponding third mortise and tenon grooves (605) and fourth mortise and tenon grooves (704).

3. The prefabricated concrete frame joint connection construction according to claim 2, characterized in that: The lower column steel pipe (7) is fixedly provided with a lining plate (9) on the inner side of the top, and the lining plate (9) protrudes from the top of the lower column steel pipe (7). During installation, the lining plate (9) abuts against the inner wall of the upper column steel pipe (6).

4. The prefabricated concrete frame joint connection construction according to claim 1, characterized in that: The bottom of the upper column steel pipe (6) abuts against the lower column steel pipe (7), and the bottom of the upper column steel pipe (6) is provided with a bevel (601) on each edge, which is used for welding and fixing with the lower column steel pipe (7).

5. The prefabricated concrete frame joint connection construction according to claim 1, characterized in that: The upper column steel pipe (6) is provided with a plurality of upper column steel pipe flanges (602) on the circumferential side, and the upper column steel pipe flanges (602) are provided with a plurality of upper column flange positioning holes (603); The lower column steel pipe (7) is provided with a plurality of lower column steel pipe flanges (701) on the circumferential side, and the lower column steel pipe flanges (701) are provided with a plurality of lower column flange positioning holes (702); The upper column steel pipe flanges (602) correspond to the lower column steel pipe flanges (701), and the flange connecting plates (8) are connected with the upper column steel pipe (6) and the lower column steel pipe (7) by penetrating the upper column flange positioning holes (603) and the lower column flange positioning holes (702) through bolts.

6. The prefabricated concrete frame joint connection construction according to claim 1, characterized in that: The upper column steel pipe (6) is fixedly provided with an upper column inner partition plate (604), the prefabricated concrete upper column (1) is embedded with an air outlet pipe (2) and a grouting pipe (3), one end of the air outlet pipe (2) and the grouting pipe (3) is flush with the molding surface of the prefabricated concrete upper column (1), the other end of the air outlet pipe (2) is communicated with the upper column inner partition plate (604), and the other end of the grouting pipe (3) penetrates through the upper column inner partition plate (604) to the inside of the lower column steel pipe (7).

7. The prefabricated concrete frame joint connection construction according to claim 1, characterized in that: The upper column middle part longitudinal reinforcement (103) around the prefabricated concrete upper column (1) is double-sided lap welded on the outer wall of the upper column steel pipe (6), and the upper column corner part longitudinal reinforcement (101) on the four corners is lap welded on one side of the outer wall of the upper column steel pipe (6) and on the other side of the outer wall of the upper column steel pipe flange (602). The lower column middle part longitudinal reinforcement (503) around the precast concrete lower column (5) is double-sided lap welded on the outer wall of the lower column steel pipe (7), and the lower column corner longitudinal reinforcement (501) at four corners is double-sided lap welded on one side of the outer wall of the lower column steel pipe (7) and lap welded on the other side of the outer wall of the lower column steel pipe flange (701).

8. The prefabricated concrete frame joint connection construction according to claim 1, characterized in that: The web connecting plate (4) is provided with a plurality of grout holes (401) in the middle part.

9. The prefabricated concrete frame joint connection construction according to claim 1, characterized in that: The upper column steel pipe (6) and the lower column steel pipe (7) are welded into a rectangle by four steel plates, and the convex part of the steel plate is a flange. The upper column steel pipe (6) and the lower column steel pipe (7) have the same structure.

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