Fabricated steel pipe concrete beam-column joint

Abstract

The application discloses a novel assembled steel pipe concrete beam-column joint, and belongs to the technical field of assembled buildings, which comprises a rectangular steel sleeve, a steel pipe concrete upper column and a steel pipe concrete lower column connected to the upper and lower ends of the rectangular steel sleeve, and a pre-pressing assembly used for pressing the vertical rectangular steel pipe, wherein the four corners of the vertical rectangular steel pipe are provided with clamping plates arranged along the vertical direction, the clamping plates extend outward along the radial direction of the vertical rectangular steel pipe, strip-shaped holes are formed in the corners of the vertical rectangular steel pipe for the clamping plates to pass through, elastic connecting devices are arranged between the clamping plates and the vertical rectangular steel pipe, the elastic connecting devices are used for providing the clamping plates with elastic pre-tightening forces along the radial outward direction, first connecting holes are formed in the vertical rectangular steel pipe, second connecting holes corresponding to the first connecting holes are formed in the rectangular steel sleeve, and the first connecting holes and the second connecting holes are connected through first bolts. The application can be used for the rapid positioning and installation at the joint, so that the assembling efficiency of the assembled building is improved.

Description

TECHNICAL FIELD

[0001] The present application belongs to the technical field of prefabricated buildings, and particularly relates to a prefabricated steel pipe concrete beam-column joint. BACKGROUND

[0002] The prefabricated building refers to building houses in batches and complete sets like machine production, that is, the prefabricated house components are transported to the site for assembly to complete the construction of the building. The standardization of design and the informatization of management make the components more standardized, the production efficiency higher, and the component cost lower. The beam-column joint in the building is the intersection point of beams and columns in different directions. The installation of the prefabricated beam-column joint directly affects the assembly efficiency and quality of the whole building. In order to improve the connection strength at the prefabricated beam-column joint, the building designers usually design multiple connected holes at the joint. Due to the influence of the precision of the prefabricated steel pipe structure, too many hole connections will seriously affect the assembly efficiency of the beam-column joint. Specifically, too many holes of the prefabricated steel pipe structure make it difficult to align the holes. After the steel pipe is positioned, the stability of the steel pipe hoisting construction is poor, and it needs to be repositioned and calibrated. SUMMARY

[0003] Therefore, the present application aims to provide a prefabricated steel pipe concrete beam-column joint which can be used for rapid positioning and installation at the joint to improve the assembly efficiency of the prefabricated building.

[0004] To achieve the above-mentioned purpose, the present application provides the following technical scheme:

[0005] The prefabricated steel pipe concrete beam-column joint comprises a rectangular steel sleeve, a steel pipe concrete upper column and a steel pipe concrete lower column connected to the upper and lower ends of the rectangular steel sleeve respectively, an upper partition plate and a lower partition plate fixed at the middle part of the rectangular steel sleeve, a pre-pressing assembly arranged on the upper side of the upper partition plate and the lower side of the lower partition plate, the steel pipe concrete upper column and the steel pipe concrete lower column having the same structure and comprising a vertical rectangular steel pipe, the pre-pressing assembly being used for pressing the vertical rectangular steel pipe, a clamping plate arranged at the four corners of the vertical rectangular steel pipe, the clamping plate being arranged along the vertical direction and extending outward along the radial direction of the vertical rectangular steel pipe, a strip-shaped hole provided at the corner of the vertical rectangular steel pipe for the clamping plate to pass through, an elastic connecting device arranged between the clamping plate and the vertical rectangular steel pipe, the elastic connecting device being used for providing the clamping plate with an elastic pre-tightening force along the radial direction outward, a first connecting hole provided on the vertical rectangular steel pipe, a second connecting hole provided on the rectangular steel sleeve and corresponding to the first connecting hole, and the first connecting hole and the second connecting hole being connected through a first bolt.

[0006] Further, the elastic connecting device comprises an inner end plate, a support plate and first springs, the clamping plate is fixedly connected with the inner end plate at one end of the vertical rectangular steel pipe, the inner end plate is perpendicular to the clamping plate, the support plate is fixed on the inner wall of the vertical rectangular steel pipe, and a plurality of first springs are distributed on both sides of the clamping plate, and the two ends of the first springs are fixedly connected with the inner end plate and the support plate respectively.

[0007] Further, the first bolt and the elastic connecting device are vertically staggered.

[0008] Further, first through holes are formed in the upper and lower partition plates, an opening is formed in the side of the rectangular steel sleeve between the upper and lower partition plates, a horizontal rectangular steel pipe is inserted into the opening, one end of the horizontal rectangular steel pipe is inserted into the rectangular steel sleeve, and a plurality of second through holes are formed in the surface of one end of the horizontal rectangular steel pipe.

[0009] Further, upper and lower limiting plates are arranged on the upper and lower sides of the horizontal rectangular steel pipe respectively, the upper and lower limiting plates are fixed on the side of the rectangular steel sleeve, and the upper and lower limiting plates are connected with the rectangular steel sleeve through a rib plate.

[0010] Further, first connecting plates are fixed on the inner wall of the rectangular steel sleeve at intervals, the first connecting plates are arranged vertically, one end of each first connecting plate is fixedly connected with the rectangular steel sleeve, the other end of each first connecting plate extends into the horizontal rectangular steel pipe along the length direction of the horizontal rectangular steel pipe, third connecting holes are formed in the first connecting plates, second connecting plates are fixed on the inner side of the horizontal rectangular steel pipe at intervals, the second connecting plates and the first connecting plates are alternately and intervally arranged, fourth connecting holes are formed in the second connecting plates and the horizontal rectangular steel pipe, fifth connecting holes are formed in the surface of the rectangular steel sleeve, the fifth connecting holes correspond to the third connecting holes and the fourth connecting holes, and the fifth connecting holes are connected through second bolts.

[0011] Further, the pre-pressing assembly comprises a support seat, a pressing head, a first connecting rod, a second connecting rod, a sliding seat, a center sliding rod, a bottom plate, an upper end plate and a lower end plate, the bottom plate is fixed to the upper partition plate or the lower partition plate, the center sliding rod slides through the bottom plate, the two ends of the center sliding rod are fixedly connected with the upper end plate and the lower end plate respectively, the sliding seat is slidably sleeved on the outside of the center sliding rod, a plurality of support seats are uniformly arranged on the outside of the sliding seat, one end of each support seat is hingedly connected to the first connecting rod, the other end of the first connecting rod is hingedly connected to one end of the second connecting rod, the other end of the second connecting rod is hingedly connected to the pressing head, and the middle part of the second connecting rod is hingedly connected to the support seat.

[0012] Further, a second spring is sleeved on the outside of the center sliding rod, and the two ends of the second spring are connected with the bottom plate and the sliding seat respectively.

[0013] Furthermore, a mounting block is fixed in the middle of the vertical rectangular steel pipe, a third through hole is provided on the mounting block, a threaded hole is provided in the center of the mounting block, a central screw is fitted in the threaded hole, and the central screw extends along the length direction of the vertical rectangular steel pipe.

[0014] The beneficial effects of this invention are as follows:

[0015] This invention discloses a prefabricated steel-concrete composite beam-column joint. By installing clamping plates at the four corners of a vertical rectangular steel pipe, and using an elastic connecting device to extend the clamping plates outwards, the vertical rectangular steel pipe has four outwardly extending quadrangular positioning structures. Each clamping plate can match the four inner corners of a rectangular steel sleeve, thus preventing torsion between the vertical rectangular steel pipe and the rectangular steel sleeve. This allows the plane of the first connecting hole to quickly become parallel to the plane of the second connecting hole, enabling rapid circumferential positioning. Furthermore, the partition plate allows for rapid vertical positioning of the vertical rectangular steel pipe. The combination of these two features facilitates the rapid fixing and installation of subsequent components.

[0016] This invention utilizes an elastic connecting device between a clamping plate and a vertical rectangular steel tube. Before the vertical rectangular steel tube is inserted into the rectangular steel sleeve, the clamping plate is partially retracted inside the tube, facilitating insertion. After insertion, the clamping plate extends outward under the action of the elastic connecting device, with its outer end elastically abutting against the inner wall of the rectangular steel sleeve. By slightly rotating the vertical rectangular steel tube, the clamping plate and the inner corner of the rectangular steel sleeve can quickly engage. After positioning, the elastic prestress of the elastic connecting device provides a certain degree of elastic positioning.

[0017] In this invention, by setting a pre-tightening component, the vertical rectangular steel pipe can be tightened simultaneously after positioning, which facilitates the installation of the first bolt and avoids the installation inconvenience caused by the inability of the rectangular steel sleeve to fully fix the vertical rectangular steel pipe.

[0018] This invention uses multiple sets of clamping plates arranged vertically. These clamping plates can be fixed within the interval between the vertical rectangular steel pipe and the rectangular steel sleeve during periodic concrete pouring, thereby increasing the connection effect between the vertical rectangular steel pipe and the rectangular steel sleeve and ensuring the connection strength of the joint.

[0019] Other advantages, objectives, and features of the invention will be set forth in the following description and will be apparent to those skilled in the art in some respects, or may be learned by practice of the invention. The objectives and other advantages of the invention can be realized and obtained through the following description. Attached Figure Description

[0020] In order to make the purposes, technical solutions and beneficial effects of the present application clearer, the present application is described below with the help of the following drawings:

[0021] Figure 1 The structural diagram of the beam-column joint of the present application;

[0022] Figure 2 The connection diagram of the horizontal rectangular steel pipe of the present application;

[0023] Figure 3 The plan view of the beam-column joint of the present application;

[0024] Figure 4 The cooperation diagram of the pre-pressing assembly and the steel pipe concrete upper column;

[0025] Figure 5 The Figure 4 The enlarged view at A;

[0026] Figure 6 The structural diagram of the horizontal rectangular steel pipe of the present application;

[0027] Figure 7 The structural diagram of the clamping plate of the present application;

[0028] Figure 8 The sectional view of the steel pipe concrete upper column of the present application;

[0029] Figure 9 The structural diagram of the pressing assembly of the present application.

[0030] The marks in the drawings are as follows: rectangular steel sleeve 1, steel pipe concrete upper column 2, steel pipe concrete lower column 3, upper partition plate 4, pre-pressing assembly 5, vertical rectangular steel pipe 6, clamping plate 7, strip-shaped hole 8, first connecting hole 9, second connecting hole 10, first bolt 11, inner end plate 12, supporting plate 13, first spring 14, first through hole 15, opening 16, horizontal rectangular steel pipe 17, second through hole 18, upper limiting plate 19, lower limiting plate 20, first connecting plate 21, second connecting plate 22, fourth connecting hole 23, fifth connecting hole 24, second bolt 25, supporting seat 26, pressing head 27, first connecting rod 28, second connecting rod 29, sliding seat 30, central sliding rod 31, bottom plate 32, upper end plate 33, lower end plate 34, second spring 35, mounting block 36, third through hole 37, central screw rod 38. DETAILED DESCRIPTION

[0031] As Figures 1-9As shown, the assembled steel pipe concrete beam column joint of the present application comprises a rectangular steel sleeve 1, a steel pipe concrete upper column 2 and a steel pipe concrete lower column 3 connected to the upper and lower ends of the rectangular steel sleeve 1 respectively, the cross section of the rectangular steel sleeve 1 is rectangular, and the whole is in the shape of a cylinder, and the upper and lower openings 16 are connected to the steel pipe concrete upper column 2 and the steel pipe concrete lower column 3 respectively. The upper and lower sides described herein are not strictly the upper and lower sides, and when the device is placed horizontally, they can also be the left and right sides, so as to facilitate the installation of the device, and those skilled in the art should be able to understand.

[0032] Among them, the middle part of the rectangular steel sleeve 1 is fixed with an upper partition plate 4 and a lower partition plate, the upper partition plate 4 and the lower partition plate are parallel to each other, and are respectively used for positioning the vertical position of the steel pipe concrete upper column 2 and the steel pipe concrete lower column 3. Among them, the upper side of the upper partition plate 4 and the lower side of the lower partition plate are provided with pre-pressing assemblies 5, except that the pre-pressing assemblies 5 on the lower side are arranged in reverse, that is, the two groups of pre-pressing assemblies 5 are symmetrical with respect to the center cross section of the rectangular steel sleeve 1; Correspondingly, the steel pipe concrete upper column 2 and the steel pipe concrete lower column 3 have the same structure, but the arrangement direction is reversed, the steel pipe concrete upper column 2 is inserted from the upper side, and the steel pipe concrete lower column 3 is inserted from the lower side.

[0033] Taking the steel pipe concrete upper column 2 as an example, the steel pipe concrete upper column 2 comprises a vertical rectangular steel pipe 6, the cross section of the vertical rectangular steel pipe 6 is also rectangular, as a prefabricated structure, the length-width ratio of the vertical rectangular steel pipe 6 is the same as that of the rectangular steel sleeve 1, and the pre-pressing assembly 5 is used for pressing the vertical rectangular steel pipe 6. By providing the pre-pressing assembly 5, the vertical rectangular steel pipe 6 can be pressed after positioning is completed, which can facilitate the installation of the first bolt 11 and avoid the inconvenience caused by the inability of the internal part of the rectangular steel sleeve 1 to fix the vertical rectangular steel pipe 6.

[0034] Specifically, the four corners of the vertical rectangular steel pipe 6 are provided with clamping plates 7, the clamping plates 7 are also in the shape of a rectangle as a whole, the clamping plates 7 are arranged along the vertical direction, that is, the plane where the clamping plates 7 are located is perpendicular to the horizontal plane, the clamping plates 7 extend outward along the radial direction of the vertical rectangular steel pipe 6, and the corners of the vertical rectangular steel pipe 6 are provided with strip-shaped holes 8 for the clamping plates 7 to pass through, the clamping plates 7 extend outward after passing through the strip-shaped holes 8 to contact the inner wall of the rectangular steel sleeve 1, so that they can be clamped at the inner corners of the rectangular steel sleeve 1 subsequently.

[0035] In the present application, an elastic connecting device is further provided between the clamping plate 7 and the vertical rectangular steel pipe 6, which is used for providing the clamping plate 7 with an elastic pre-tightening force along the radial direction outward, so that the clamping plate 7 can have a pre-tightening force extending outward, a first connecting hole 9 is provided on the vertical rectangular steel pipe 6, and a second connecting hole 10 corresponding to the first connecting hole 9 is provided on the rectangular steel sleeve 1, and the first connecting hole 9 and the second connecting hole 10 are connected through the first bolt 11.

[0036] The specific positioning process is that before the vertical rectangular steel pipe 6 is inserted into the rectangular steel sleeve 1, the clamping plate 7 is partially retracted in the vertical rectangular steel pipe 6, which can facilitate the insertion of the vertical rectangular steel pipe 6. Then the steel pipe concrete upper column 2 is inserted into the upper end opening 16 of the rectangular steel sleeve 1 until the steel pipe concrete upper column 2 is limited by the upper partition plate 4 or the structure installed on the upper partition plate 4. After the insertion is completed, the outer end of the clamping plate 7 elastically abuts against the inner wall of the rectangular steel sleeve 1 under the action of the elastic connecting device, and the vertical rectangular steel pipe 6 is rotated back and forth around the axis to a small extent, so that the clamping plate 7 is quickly clamped with the inner corner of the rectangular steel sleeve 1 until the vertical rectangular steel pipe 6 cannot be rotated, and the circumferential positioning is realized. After the positioning is completed, the elastic positioning effect can be achieved under the elastic prestress of the elastic connecting device.

[0037] In the embodiment, the elastic connecting device includes an inner end plate 12, a support plate 13 and a first spring 14, the clamping plate 7 is fixedly connected with the inner end plate 12 at one end of the vertical rectangular steel pipe 6, the inner end plate 12 is also rectangular, the inner end plate 12 is perpendicular to the clamping plate 7, the support plate 13 is fixed on the inner wall of the vertical rectangular steel pipe 6, the support plate 13 is parallel to the inner end plate 12, the support plate 13 is welded on the inner wall of the vertical rectangular steel pipe 6, and a plurality of first springs 14 are distributed on both sides of the clamping plate 7, and the two ends of the first spring 14 are fixedly connected with the inner end plate 12 and the support plate 13 respectively. Through the above structure, the installation and adjustment of the clamping plate 7 can be facilitated. The first bolt 11 and the elastic connecting device are vertically staggered to avoid interference, but will not affect the strength of anchoring. The clamping plate 7 can be fixed in the interval between the vertical rectangular steel pipe 6 and the rectangular steel sleeve 1 during the pouring of the periodic concrete, so as to increase the connection effect between the vertical rectangular steel pipe 6 and the rectangular steel sleeve 1, and cooperate with the first bolt 11 to ensure the connection strength of the joint.

[0038] In the embodiment, the first through hole 15 is arranged on the upper partition plate 4 and the lower partition plate, which can facilitate the flow of the slurry. During the pouring of the concrete, the concrete slurry can flow in the space between the first partition plate and the second partition plate through the first through hole 15, and the steel pipe concrete upper column 2 and the steel pipe concrete lower column 3 are connected, which can improve the connection strength. The opening 16 is arranged on the side surface of the rectangular steel sleeve 1 between the upper partition plate 4 and the lower partition plate, the opening 16 is rectangular, the horizontal rectangular steel pipe 17 is inserted into the opening 16, one end of the horizontal rectangular steel pipe 17 is inserted into the rectangular steel sleeve 1, and a plurality of second through holes 18 are arranged on the surface of the horizontal rectangular steel pipe 17 at one end of the rectangular steel sleeve 1. Through the arrangement of the second through hole 18, the horizontal rectangular steel pipe 17 and the rectangular steel sleeve 1 can be better connected to increase the connection strength.

[0039] In the embodiment, the upper side and the lower side of the horizontal rectangular steel pipe 17 are respectively provided with an upper limiting plate 19 and a lower limiting plate 20, and the upper limiting plate 19 and the lower limiting plate 20 are fixed to the side of the rectangular steel sleeve 1. The upper limiting plate 19 and the lower limiting plate 20 are connected with the rectangular steel sleeve 1 through a rib plate. The lower limiting plate 20 can be used to support the horizontal rectangular steel pipe 17 during installation, and the upper limiting plate 19 can be used to facilitate the installation of the horizontal rectangular steel pipe 17.

[0040] In the embodiment, the inner wall of the rectangular steel sleeve 1 is fixed with a first connecting plate 21 at intervals, the first connecting plate 21 is arranged vertically, one end of the first connecting plate 21 is fixedly connected with the rectangular steel sleeve 1, the other end of the first connecting plate 21 extends into the horizontal rectangular steel pipe 17 along the length direction of the horizontal rectangular steel pipe 17, a third connecting hole is formed in the first connecting plate 21, a second connecting plate 22 is fixedly arranged on the inner side of the horizontal rectangular steel pipe 17 at intervals, the second connecting plate 22 and the first connecting plate 21 are alternately arranged at intervals, a fourth connecting hole 23 is formed in the second connecting plate 22 and the horizontal rectangular steel pipe 17, and a fifth connecting hole 24 is formed in the surface of the rectangular steel sleeve 1. The fifth connecting hole 24 corresponds to the third connecting hole and the fourth connecting hole 23, and is connected through a second bolt 25. The second bolt 25 can more firmly connect the horizontal rectangular steel pipe 17 and the rectangular steel sleeve 1 together, avoid the problem of local instability of the steel pipe concrete beam column joint, and enhance the safety performance of the steel pipe concrete beam column joint.

[0041] In the embodiment, the pre-pressing assembly 5 includes a support seat 26, a pressing head 27, a first connecting rod 28, a second connecting rod 29, a sliding seat 30, a center sliding rod 31, a bottom plate 32, an upper end plate 33 and a lower end plate 34. The support seat 26 is 4 groups and is uniformly distributed on the upper partition plate 4 and the lower partition plate. The bottom plate 32 is fixed to the center of the upper partition plate 4 or the lower partition plate. The center sliding rod 31 slides through the bottom plate 32. The two ends of the center sliding rod 31 are respectively fixed with the upper end plate 33 and the lower end plate 34. The sliding seat 30 is slidably sleeved on the outside of the center sliding rod 31. A plurality of supports are uniformly arranged on the outside of the sliding seat 30. The supports are hingedly connected to one end of the first connecting rod 28. The other end of the first connecting rod 28 is hingedly connected to one end of the second connecting rod 29. The other end of the second connecting rod 29 is hingedly connected to the pressing head 27. The middle part of the second connecting rod 29 is hingedly connected to the support seat 26. The middle part of the vertical rectangular steel pipe 6 is fixed with a mounting block 36. A third through hole 37 is formed in the mounting block 36. A threaded hole is formed in the center of the mounting block 36. A center screw 38 is fitted in the threaded hole. The center screw 38 extends along the length direction of the vertical rectangular steel pipe 6. The pre-pressing assembly 5 can press the vertical rectangular steel pipe 6 after positioning, which facilitates the installation of the first bolt 11 and avoids the inconvenience caused by the inability to fix the vertical rectangular steel pipe 6 in the rectangular steel sleeve 1.

[0042] In use, the central screw 38 is rotated, and the central screw 38 is screwed with the mounting block 36, so that the central screw 38 moves downward to contact the central slide rod 31, the central slide rod 31 is driven by the central screw 38 to move downward, the upper end plate 33 of the central slide rod 31 contacts the sliding seat 30 to drive the sliding seat 30 to move downward. The sliding seat 30 moves downward to drive the first connecting rod 28 and the second connecting rod 29 to move inward, so that the pressure head 27 moves inward to clamp the vertical rectangular steel pipe 6.

[0043] In the embodiment, the outer side of the central slide rod 31 is sleeved with the second spring 35, and the two ends of the second spring 35 are connected with the bottom plate 32 and the sliding seat 30 respectively, so that the sliding seat 30 can be reset to adjust the position.

[0044] Finally, it should be pointed out that the above preferred embodiments are only used to illustrate the technical solutions of the present application and are not limiting. Although the present application has been described in detail through the above preferred embodiments, those skilled in the art should understand that various changes can be made in form and details without departing from the scope defined by the claims of the present application.

Claims

1. A fabricated steel tube concrete beam-column joint comprising a rectangular steel sleeve, a steel tube concrete upper column and a steel tube concrete lower column connected to upper and lower ends of the rectangular steel sleeve respectively, characterized in that: The middle part of the rectangular steel sleeve is fixed with an upper partition plate and a lower partition plate, the upper side of the upper partition plate and the lower side of the lower partition plate are provided with a pre-pressing assembly; the upper concrete column and the lower concrete column are the same in structure and each include a vertical rectangular steel pipe, the pre-pressing assembly is used for pressing the vertical rectangular steel pipe, the four corners of the vertical rectangular steel pipe are provided with a clamping plate, the clamping plate is arranged along the vertical direction, the clamping plate extends outward along the radial direction of the vertical rectangular steel pipe, a strip-shaped hole is formed at the corner of the vertical rectangular steel pipe for the clamping plate to pass through, an elastic connecting device is arranged between the clamping plate and the vertical rectangular steel pipe, the elastic connecting device is used for providing the clamping plate with an elastic pre-tightening force outward along the radial direction, a first connecting hole is formed on the vertical rectangular steel pipe, a second connecting hole corresponding to the first connecting hole is formed on the rectangular steel sleeve, and the first connecting hole and the second connecting hole are connected through a first bolt.

2. The fabricated steel tube concrete beam-column joint according to claim 1, wherein: The elastic connecting device includes an inner end plate, a support plate and a first spring, the clamping plate is fixedly connected with the inner end plate at one end of the vertical rectangular steel pipe, the inner end plate is perpendicular to the clamping plate, the support plate is fixed on the inner wall of the vertical rectangular steel pipe, and a plurality of first springs are distributed on both sides of the clamping plate, and the two ends of the first spring are fixedly connected with the inner end plate and the support plate respectively.

3. The fabricated steel tube concrete beam-column joint according to claim 2, wherein: The first bolt and the elastic connecting device are vertically staggered.

4. The fabricated steel pipe concrete beam-column joint according to claim 1, characterized in that: First through holes are formed on the upper partition plate and the lower partition plate, an opening is formed on the side of the rectangular steel sleeve between the upper partition plate and the lower partition plate, a horizontal rectangular steel pipe is inserted into the opening, one end of the horizontal rectangular steel pipe is inserted into the rectangular steel sleeve, and a plurality of second through holes are formed on the surface of the horizontal rectangular steel pipe at one end of the rectangular steel sleeve.

5. The fabricated steel tube concrete beam-column joint according to claim 4, wherein: Upper and lower limiting plates are arranged on the upper side and the lower side of the horizontal rectangular steel pipe respectively, the upper and lower limiting plates are fixed on the side of the rectangular steel sleeve, and the rib plates are connected between the upper and lower limiting plates and the rectangular steel sleeve.

6. The fabricated steel tube concrete beam-column joint according to claim 4, wherein: First connecting plates are fixed on the inner wall of the rectangular steel sleeve at intervals, the first connecting plates are arranged along the vertical direction, one end of the first connecting plate is fixedly connected with the rectangular steel sleeve, the other end of the first connecting plate extends into the horizontal rectangular steel pipe along the length direction of the horizontal rectangular steel pipe, a third connecting hole is formed on the first connecting plate, second connecting plates are fixed on the inner side of the horizontal rectangular steel pipe at intervals, the second connecting plates and the first connecting plates are alternately and intervaliy arranged, fourth connecting holes are formed on the second connecting plates and the horizontal rectangular steel pipe, and fifth connecting holes are formed on the surface of the rectangular steel sleeve, the fifth connecting holes correspond to the third connecting holes and the fourth connecting holes and are connected through a second bolt.

7. The fabricated steel tube concrete beam-column joint according to any one of claims 1-6, characterized in that: The pre-pressing assembly comprises a support base, a press head, a first connecting rod, a second connecting rod, a sliding base, a center sliding rod, a bottom plate, an upper end plate and a lower end plate, the bottom plate is fixed to an upper partition plate or a lower partition plate, the center sliding rod slides through the bottom plate, two ends of the center sliding rod are respectively fixed with the upper end plate and the lower end plate, the sliding base is slidably sleeved outside the center sliding rod, a plurality of support bases are uniformly arranged outside the sliding base, the support bases are hingedly connected to one end of the first connecting rod, the other end of the first connecting rod is hingedly connected to one end of the second connecting rod, the other end of the second connecting rod is hingedly connected to the press head, and the middle part of the second connecting rod is hingedly connected to the support base.

8. The fabricated steel tube concrete beam-column joint according to claim 7, wherein: A second spring is sleeved outside the center sliding rod, and two ends of the second spring are respectively connected to the bottom plate and the sliding base.

9. The fabricated steel tube concrete beam-column joint according to claim 8, wherein: A mounting block is fixed to the middle part of the vertical rectangular steel pipe, a third through hole is formed in the mounting block, a threaded hole is formed in the center of the mounting block, a center screw is matched in the threaded hole, and the center screw extends along the length direction of the vertical rectangular steel pipe.

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