Steel reinforced concrete transfer beam uplifting inclined steel pipe column base joint and construction method

Abstract

The invention discloses a steel reinforced concrete transfer beam upward-supporting inclined steel pipe column base joint and a construction method, and belongs to the technical field of building structures. The joint comprises a section steel intersection section distributed in a cross shape, a steel pipe column, an annular bracket plate, two steel reinforced concrete beams and a steel pipe encased concrete beam; the bottom end of the steel pipe column is welded to the top of the profile steel intersection section, and an annular bracket plate is arranged at the bottom of the steel pipe column. Two profile steel beams, top longitudinal bars and bottom longitudinal bars are arranged in the steel reinforced concrete beam, the top longitudinal bars and the bottom longitudinal bars are distributed on the upper sides and the lower sides of the two profile steel beams, the two profile steel beams are welded to the profile steel intersection section, the middle top longitudinal bar is welded to the annular bracket plate, and the top longitudinal bars on the two sides are arranged around the steel pipe column. The bottom of the steel pipe column is wrapped by the steel pipe encased concrete beam, column foot longitudinal bars are arranged in the steel pipe encased concrete beam, and the bottoms of the column foot longitudinal bars are anchored in the steel reinforced concrete beam. The inclined steel pipe column foot joint supported by the steel reinforced concrete transfer beam is reliable in anchoring and can meet the stress requirement of the inclined steel pipe column in a large-span space.

Description

Technical Field

[0001] This invention belongs to the field of building structure technology, specifically relating to a joint for supporting inclined steel pipe columns on a steel-concrete transfer beam and its construction method. Background Technology

[0002] With the rapid development of the construction industry, large-span, complex-shaped spatial steel structures are widely used in landmark buildings, large stadiums, convention centers, and other projects due to their aesthetic appeal and high space utilization. Due to architectural design limitations, the column grid of these steel structures often adopts a spatial, inclined steel pipe column design. Since these columns cannot be directly aligned with the lower, regular column grid, load transfer and structural connection are achieved through concrete transfer beams. Therefore, the reliability of the joint between the steel pipe column base and the concrete transfer beam directly determines the safe and stable operation of the entire large-span spatial steel structure.

[0003] Currently, there are two main approaches to address the rigid connection requirements of inclined steel column bases in beam-slab transfer systems: one is to add large-sized concrete piers to the joint, with the concrete piers tightly connected to the transfer joint by reinforcing bars, and the steel column base embedded in the piers; the other is to increase the volume of the concrete transfer joint by adding haunches to pre-embed the spatial steel column base. However, both of these construction methods suffer from problems such as insufficient anchorage strength and stress concentration at the joint. In particular, under the coupled influence of vertical loads, horizontal components, wind loads, and seismic forces, large-span inclined steel columns are prone to generating significant tensile forces at the column base. Insufficient anchorage strength can lead to relative slippage and pull-out between the steel column base and the concrete transfer beam, thereby affecting the stability and safety of the entire large-span complex spatial steel structure. Summary of the Invention

[0004] In response to one or more of the above-mentioned defects or improvement needs of the existing technology, the present invention provides a steel-concrete composite transfer beam supporting inclined steel pipe column foot joint and construction method, which has reliable anchorage, can form a whole with good stress performance, effectively adapts to the layout requirements of spatial inclined steel pipe columns, and can meet the stress requirements and flexible construction requirements of large-span spatial inclined steel pipe columns.

[0005] To achieve the above objectives, the present invention provides a steel-concrete transfer beam supporting an inclined steel pipe column foot joint, comprising: The steel sections intersect in a cross shape; A steel pipe column, the bottom end of which is welded to the top of the steel section junction, and the steel pipe column and the central axis of the steel section junction have a certain angle; An annular corbel plate is welded to the outer wall surface at the bottom of the steel pipe column; Two steel-concrete composite beams are provided, each of which contains two steel beams, top longitudinal bars and bottom longitudinal bars distributed on the upper and lower sides of the two steel beams. The two steel beams are respectively welded to the two opposite extended end faces of the steel beam intersection section. The top longitudinal bar in the middle is welded to the annular corbel plate, and the top longitudinal bars on both sides are arranged around the steel pipe column. A steel pipe encased in concrete beam, wherein the concrete encasing the steel pipe covers the bottom of the steel pipe column; the steel pipe encased in concrete beam is provided with column foot longitudinal reinforcement, the column foot longitudinal reinforcement includes two vertical sections and a horizontal section connecting the top of the two vertical sections, the bottom ends of the two vertical sections are respectively located on both sides of the steel section intersection and are both anchored in the steel-concrete beam.

[0006] As a further improvement of the present invention, the steel section includes a top plate, a cross-shaped web and a bottom plate arranged and welded in sequence along the vertical direction; the cross section of the steel beam is I-shaped, which includes an upper flange, a steel web and a lower flange, and the upper flange, the steel web and the lower flange are respectively welded to the top plate, the cross-shaped web and the bottom plate.

[0007] As a further improvement of the present invention, the steel section includes multiple arc-shaped ribs surrounding the cross-shaped web, with the two sides of each arc-shaped rib welded to the cross-shaped web, and the top and bottom of each arc-shaped rib welded to the top plate and bottom plate, respectively.

[0008] As a further improvement of the present invention, overflow holes are provided on the top plate, the bottom plate, the cross-shaped web plate, and the arc-shaped ribbed plate.

[0009] As a further improvement of the present invention, the bottom of the vertical section is bent and anchored to the bottom longitudinal reinforcement.

[0010] As a further improvement of the present invention, the bottom of the vertical section is anchored to the upper wing plate by a steel bar connector; A stiffening plate is provided below the rebar connector. One side of the stiffening plate is welded to the web of the I-shaped steel section, and its top and bottom are respectively welded to the upper and lower flanges of the I-shaped steel section.

[0011] As a further improvement of the present invention, the top and bottom surfaces of the steel beam are provided with a plurality of welding studs; and / or, the outer wall surface of the steel pipe column is provided with a plurality of welding studs.

[0012] As a further improvement of the present invention, the steel pipe column includes a lower section and an upper section. The bottom end of the lower section is welded to the top of the steel section junction, and the bottom of the upper section is welded to the top of the lower section. The steel pipe is encased in a concrete beam that surrounds the lower section and part of the upper section.

[0013] As a further improvement of the present invention, a haunch angle is provided at the connection between the two steel-concrete beams.

[0014] On the other hand, the present invention also provides a construction method for supporting inclined steel pipe column foot joints on steel-concrete transfer beams, comprising the following steps: (1) Precast four steel beams, steel section intersection, steel pipe column, and ring bracket plate; (2) Erect formwork on site, lay bottom longitudinal reinforcement, and position and fix the bottom longitudinal reinforcement; (3) Weld the four steel beams to the four extended end faces of the steel section, weld the annular bracket plate to the outer periphery of the bottom of the steel column, and weld the bottom of the steel column to the top of the steel section. (4) Lay the top longitudinal reinforcement and weld the top longitudinal reinforcement located in the middle to the ring bracket plate; (5) Tie the longitudinal reinforcement bars at the column base and pour concrete to form two steel-concrete composite beams and a steel-pipe-encased concrete beam; (6) Remove the formwork after the concrete has cured to the design strength, and complete the construction of the entire node.

[0015] The aforementioned improved technical features can be combined with each other as long as they do not conflict with each other.

[0016] In summary, the beneficial effects of the above-described technical solutions conceived by this invention compared with the prior art include: (1) The steel-concrete composite transfer beam supporting the inclined steel pipe column foot node of the present invention includes a cross-shaped steel section, a steel pipe column, an annular corbel plate, two steel-concrete composite beams and a steel pipe-encased concrete beam; the bottom end of the steel pipe column is welded to the top of the steel section, and the central axes of the two are at a certain angle, and an annular corbel plate is provided at the bottom of the steel pipe column; two steel beams are provided in each of the two steel-concrete composite beams, and top longitudinal bars and bottom longitudinal bars are distributed on the upper and lower sides of the two steel beams; the two steel beams are welded to the steel section; the top longitudinal bar in the middle is welded to the annular corbel plate; the top longitudinal bars on both sides are arranged around the steel pipe column; the steel pipe-encased concrete beam covers the bottom of the steel pipe column, and column foot longitudinal bars are provided inside it, and the bottom of the column foot longitudinal bars is anchored in the steel-concrete composite beam. The steel-concrete transfer beam supporting inclined steel pipe column foot joint of the present invention has reliable anchoring, good cooperative stress performance, convenient construction and strong adaptability. It can meet the stress requirements and flexible design and construction requirements of large-span spatial inclined steel pipe columns, and ensure the safe and stable operation of large-span spatial steel structures.

[0017] (2) The steel-concrete conversion beam of the present invention supports the inclined steel pipe column foot node. Overflow holes are set on each plate of the steel section to ensure the compactness of the concrete pouring, thereby ensuring that the steel beam, the steel section, the ring bracket plate, etc. are in synergy with the steel bars and concrete. The setting of welding studs further enhances the bonding performance between the steel components and the concrete, avoids relative slippage, improves the overall stiffness and ductility of the node, and can effectively avoid the hidden dangers of node deformation and concrete cracking, and ensure the long-term stability of the structure.

[0018] (3) The steel-concrete conversion beam of the present invention supports the inclined steel pipe column foot node. The steel pipe column adopts a segmented design. The steel pipe is wrapped with a concrete beam to effectively protect the steel pipe column, ensuring that the connection of each welded part of the steel pipe column is reliable. It can effectively resist the repeated load and the influence of environmental factors, improve the durability of the node, and extend the service life of the entire space steel structure.

[0019] (4) The inclined steel pipe column foot node of the steel-concrete conversion beam of the present invention effectively solves the problem of the continuity of some of the top longitudinal reinforcement by setting a haunch angle between the two steel-concrete beams to cover the top longitudinal reinforcement, and adapts to the arrangement requirements of the top longitudinal reinforcement.

[0020] (5) The construction method of the inclined steel pipe column foot node on the steel-concrete conversion beam of the present invention adopts the factory prefabrication and on-site assembly and welding method, which effectively controls the component size accuracy and welding quality, reduces the amount of on-site work, and solves the on-site hoisting and installation problems. Attached Figure Description

[0021] To more clearly illustrate the technical solutions in the embodiments of the present invention, the accompanying drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0022] Figure 1 This is a schematic diagram of the overall structure of the inclined steel pipe column foot node supported on the steel-concrete transfer beam in an embodiment of the present invention; Figure 2 This is a front view of the inclined steel pipe column foot node supported on the steel-concrete transfer beam in an embodiment of the present invention; Figure 3 This is a top view of the inclined steel pipe column foot node supported on the steel-concrete transfer beam in an embodiment of the present invention; In all the accompanying drawings, the same reference numerals denote the same technical features, specifically: 1. Steel pipe column; 11. Lower section of steel pipe column; 12. Upper section of steel pipe column; 2. Steel section intersection; 21. Top plate; 22. Cross-shaped web; 23. Bottom plate; 24. Arc-shaped ribbed plate; 25. Grout overflow hole; 3. Steel-concrete beam; 31. Steel beam; 311. Upper flange; 312. Steel web; 313. Lower flange; 32. Top longitudinal reinforcement; 33. Bottom longitudinal reinforcement; 4. Steel pipe encased in concrete beam; 41. Column base longitudinal reinforcement; 5. Circular corbel plate; 6. Rebar connector; 7. Stiffening plate; 8. Weld stud; 9. Armhole corner. Detailed Implementation

[0023] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the invention. Furthermore, the technical features involved in the various embodiments of this invention described below can be combined with each other as long as they do not conflict with each other.

[0024] In the description of this invention, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0025] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this invention, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0026] In this invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0027] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "over," and "on top" of the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0028] Example: Please see Figures 1-3 In a preferred embodiment of the present invention, the foot node supporting the inclined steel pipe column 1 on the steel-concrete transfer beam includes a cross-shaped steel intersection section 2, a steel pipe column 1, an annular corbel plate 5, two steel-concrete beams 3, and a steel pipe-encased concrete beam 4. The components work together to form a complete node structure, realizing effective load transfer and reliable anchoring.

[0029] The steel section 2, arranged in a cross shape, serves as the core load-bearing foundation of the node, connecting the steel pipe column 1 and the steel-concrete composite beam 3, dispersing the concentrated load transmitted from the column base, and avoiding stress concentration hazards. The bottom end of the steel pipe column 1 is welded to the top of the steel section 2, and the central axes of the steel pipe column 1 and the steel section 2 have a certain angle to accommodate the arrangement requirements of the spatial inclined steel pipe column 1. The annular corbel plate 5 is welded to the outer wall of the bottom of the steel pipe column 1, connecting the top longitudinal reinforcement 32 and strengthening the connection stiffness between the steel pipe column 1 and the steel section 2, realizing the coordinated stress of the reinforcement and steel components, and improving the anchorage reliability of the node. The two steel-concrete composite beams 3 serve as the core components for load transmission. Each steel-concrete composite beam 3 contains two steel beams 31, top longitudinal reinforcement 32 and bottom longitudinal reinforcement 33 distributed on the upper and lower sides of the two steel beams 31. The two steel beams 31 are respectively welded to the two opposite extended end faces of the steel section 2, and the top longitudinal reinforcement 32 in the middle is welded to the annular corbel plate 5. The bottom of the steel pipe column 1 is covered with concrete and has several column base longitudinal bars 41 inside. The column base longitudinal bars 41 include two vertical sections and a horizontal section connecting the top of the two vertical sections. The bottom ends of the two vertical sections are located on both sides of the steel section intersection 2 and are both anchored in the steel-concrete beam 3.

[0030] Specifically, within the two steel-concrete composite beams 3, the top longitudinal reinforcement 32 located in the middle is divided into two sections by the steel pipe column 1, and the opposite ends of the two sections are welded to the annular corbel plate 5; the top longitudinal reinforcement 32 located on both sides bypasses the steel pipe column 1 in a bypass manner to achieve continuous installation along the length direction of the steel-concrete composite beam 3; the bottom longitudinal reinforcement 33 is located below the steel beam 31 and is installed continuously along the length direction of the steel-concrete composite beam 3.

[0031] Preferably, a haunch angle 9 is provided between the two steel-concrete beams 3 to provide a through path for the top longitudinal reinforcement 32, without increasing the size of the column base node.

[0032] More preferably, the steel beam 31 is mainly used to increase the anchorage depth of the steel column base. It does not need to be set along the entire length of the steel-concrete beam 3. The distance between the end of the steel beam 31 away from the steel intersection section 2 and the central axis of the steel intersection section 2 is not less than three parts of the diameter of the steel pipe column 1.

[0033] Preferably, the steel section 2 includes a top plate 21, a cross-shaped web 22, and a bottom plate 23 arranged and welded in sequence along the vertical direction, which together constitute the load-bearing body of the steel section 2; the cross section of the steel beam 31 is I-shaped, and the steel beam 31 includes an upper flange 311, a steel web 312, and a lower flange 313, which are welded to the top plate 21, the cross-shaped web 22, and the bottom plate 23 respectively.

[0034] Furthermore, the steel section 2 preferably also includes multiple arc-shaped ribs 24 surrounding the cross-shaped web 22. The two sides of each arc-shaped rib 24 are welded to the cross-shaped web 22, and the top of the arc-shaped rib 24 is welded to the top plate 21 and the bottom plate 23, respectively, to enhance the overall stiffness and shear resistance of the steel section 2.

[0035] In actual installation, the top plate 21, bottom plate 23, cross-shaped web plate 22, and arc-shaped ribbed plate 24 are preferably provided with overflow holes 25, which are used to discharge air and overflow excess grout during concrete pouring to ensure the compactness of the concrete pouring.

[0036] More preferably, the bottom of the vertical section of the column base longitudinal reinforcement 41 can be anchored in two ways. Specifically, when the vertical section is located on the side of the steel beam 31, the vertical section extends to the bottom of the steel-concrete beam 3, and the bottom of the vertical section is bent and anchored to the bottom longitudinal reinforcement 33. The bending anchorage length of the vertical section is preferably not less than 15 times its diameter. When the vertical section is located directly above the steel beam 31, the vertical section cannot pass through the flange of the steel beam 31. The bottom of the vertical section is anchored to the upper flange 311 through the steel rebar connector 6. The steel rebar connector 6 is preferably welded to the top of the upper flange 311.

[0037] Furthermore, a stiffening plate 7 is provided below the rebar connector 6. One side of the stiffening plate 7 is welded to the web plate 312 of the I-shaped steel section to enhance the connection rigidity and load-bearing reliability of the rebar connector 6.

[0038] More preferably, the top and bottom surfaces of the steel beam 31 are provided with a plurality of welding studs 8; and / or, the outer wall surface of the steel pipe column 1 is provided with a plurality of welding studs 8. Preferably, the outer wall surface of the arc-shaped ribbed plate 24 is also provided with a plurality of welding studs 8.

[0039] Specifically, welding studs 8 are preferably evenly distributed on all surfaces to enhance the bonding performance between the steel component and the concrete, enabling them to work together to bear the load and further improve the overall load-bearing capacity of the joint.

[0040] Preferably, the steel pipe column 1 includes a lower section 11 and an upper section 12. The bottom end of the lower section 11 is welded to the top of the steel section junction 2, and the bottom of the upper section 12 is welded to the top of the lower section 11. A concrete-encased beam 4 surrounds the lower section 11 and part of the upper section 12. More specifically, the concrete-encased beam 4 completely covers the connection between the lower section 11 and the upper section 12, and the horizontal section of the column base longitudinal reinforcement 41 is located above the connection between the lower section 11 and the upper section 12. Preferably, the annular corbel plate 5 and the lower section 11 can be prefabricated separately and then welded together, or they can be integrally formed.

[0041] Preferably, the present invention also provides a construction method for supporting an inclined steel pipe column at the first foot of a steel-concrete transfer beam, characterized by comprising the following steps: (1) Precast four steel beams 31, steel intersection section 2, steel pipe column 1, and ring bracket plate 5; (2) Erect formwork on site, lay bottom longitudinal reinforcement 33, and position and fix the bottom longitudinal reinforcement 33; (3) Weld the four steel beams 31 to the four extended end faces of the steel section 2 respectively, weld the annular bracket plate 5 to the outer periphery of the bottom of the steel pipe column 1, and weld the bottom of the steel pipe column 1 to the top of the steel section 2. (4) Lay the top longitudinal reinforcement 32 and weld the top longitudinal reinforcement 32 located in the middle to the annular corbel plate 5; (5) Tie the longitudinal reinforcement 41 at the column base and pour concrete to form two steel-concrete composite beams 3 and a steel pipe-encased concrete beam 4; (6) Remove the formwork after the concrete has cured to the design strength, and complete the construction of the entire node.

[0042] The inclined steel pipe column base node on the steel-concrete transfer beam in this invention forms a complete node reinforcement and anchorage system through the coordinated arrangement of cross-shaped steel section intersection, annular corbel plate, haunch angle, and arc-shaped rib plate. This effectively solves the problems of insufficient anchorage strength and stress concentration in existing nodes. At the same time, the addition of haunch angle solves the problem of some top longitudinal reinforcement not being able to be continuous. The column base longitudinal reinforcement adopts two selectable anchorage methods to adapt to different construction scenarios, ensuring reliable connection between the steel pipe column base and the steel-concrete beam. It can effectively withstand the tensile force, bending moment, and shear force transmitted by the inclined steel pipe column, meeting the stress requirements of large-span spatial steel structures.

[0043] Those skilled in the art will readily understand that the above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention should be included within the scope of protection of the present invention.

Claims

1. A joint for supporting inclined steel pipe columns on a steel-concrete transfer beam, characterized in that, include: The steel sections intersect in a cross shape; A steel pipe column, the bottom end of which is welded to the top of the steel section junction, and the steel pipe column and the central axis of the steel section junction have a certain angle; An annular corbel plate is welded to the outer wall surface at the bottom of the steel pipe column; Two steel-concrete composite beams are provided, each of which contains two steel beams, top longitudinal bars and bottom longitudinal bars distributed on the upper and lower sides of the two steel beams. The two steel beams are respectively welded to the two opposite extended end faces of the steel beam intersection section. The top longitudinal bar in the middle is welded to the annular corbel plate, and the top longitudinal bars on both sides are arranged around the steel pipe column. A steel pipe encased in concrete beam, wherein the concrete encasing the steel pipe covers the bottom of the steel pipe column; the steel pipe encased in concrete beam is provided with column foot longitudinal reinforcement, the column foot longitudinal reinforcement includes two vertical sections and a horizontal section connecting the top of the two vertical sections, the bottom ends of the two vertical sections are respectively located on both sides of the steel section intersection and are both anchored in the steel-concrete beam.

2. The steel-concrete composite transfer beam supporting inclined steel pipe column foot joint according to claim 1, characterized in that, The steel section includes a top plate, a cross-shaped web, and a bottom plate that are arranged and welded together in a vertical direction; the cross section of the steel beam is I-shaped and includes an upper flange, a steel web, and a lower flange, wherein the upper flange, the steel web, and the lower flange are respectively welded to the top plate, the cross-shaped web, and the bottom plate.

3. The steel-concrete composite transfer beam supporting inclined steel pipe column foot joint according to claim 2, characterized in that, The steel section includes multiple arc-shaped reinforcing plates that surround the cross-shaped web. The two sides of each arc-shaped reinforcing plate are welded to the cross-shaped web, and the top and bottom of each arc-shaped reinforcing plate are welded to the top plate and bottom plate, respectively.

4. The inclined steel pipe column base joint on the steel-concrete transfer beam according to claim 3, characterized in that, Overflow holes are provided on the top plate, the bottom plate, the cross-shaped web plate, and the arc-shaped ribbed plate.

5. The steel-concrete composite transfer beam supporting inclined steel pipe column footing joint according to claim 1, characterized in that, The bottom of the vertical section is bent and then anchored to the bottom longitudinal reinforcement.

6. The steel-concrete composite transfer beam supporting inclined steel pipe column footing joint according to claim 2, characterized in that, The bottom of the vertical section is anchored to the upper wing plate via a steel bar connector; A stiffening plate is provided below the rebar connector. One side of the stiffening plate is welded to the web of the I-shaped steel section, and its top and bottom are respectively welded to the upper and lower flanges of the I-shaped steel section.

7. The steel-concrete transfer beam supporting an inclined steel pipe column foot joint according to any one of claims 1 to 6, characterized in that, The top and bottom surfaces of the steel beam are provided with a number of welding studs; and / or, the outer wall surface of the steel pipe column is provided with a number of welding studs.

8. The inclined steel pipe column base joint on the steel-concrete transfer beam according to any one of claims 1 to 6, characterized in that, The steel pipe column includes a lower section and an upper section. The bottom end of the lower section is welded to the top of the steel section intersection, and the bottom of the upper section is welded to the top of the lower section. The steel pipe is encased in a concrete beam, which covers the lower section and part of the upper section.

9. The steel-concrete transfer beam supporting an inclined steel pipe column foot joint according to any one of claims 1 to 6, characterized in that, The connection between the two steel-concrete composite beams is provided with a haunch angle.

10. The construction method for the inclined steel pipe column base joint supported on the steel-concrete transfer beam as described in any one of claims 1 to 9, characterized in that, Includes the following steps: (1) Precast four steel beams, steel section intersection, steel pipe column, and ring bracket plate; (2) Erect formwork on site, lay bottom longitudinal reinforcement, and position and fix the bottom longitudinal reinforcement; (3) Weld the four steel beams to the four extended end faces of the steel section, weld the annular bracket plate to the outer periphery of the bottom of the steel column, and weld the bottom of the steel column to the top of the steel section. (4) Lay the top longitudinal reinforcement and weld the top longitudinal reinforcement located in the middle to the ring bracket plate; (5) Tie the longitudinal reinforcement bars at the column base and pour concrete to form two steel-concrete composite beams and a steel pipe-encased concrete beam; (6) Remove the formwork after the concrete has cured to the design strength, and complete the construction of the entire node.

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