Steel pipe rigid connection node for stand awning

Abstract

The utility model relates to the technical field of building construction, in particular to a steel pipe rigid connection node for a stand awning, which aims at solving the problem of how to improve the root rigidity of the stand awning and comprises a first concrete column, an outer wrapping steel pipe and a cantilever steel beam. The outer wrapping steel pipe is arranged above the first concrete column, a penetrating cavity is formed in the outer wrapping steel pipe in the length direction of the outer wrapping steel pipe, a second concrete column capable of being connected with the first concrete column into an integrated structure is formed in the cavity in a pouring mode, and a plurality of first steel bars and a plurality of second steel bars are arranged in the outer wrapping steel pipe. The first reinforcing steel bars are arranged in the X-axis direction, the second reinforcing steel bars are arranged in the Y-axis direction, and the first reinforcing steel bars and the second reinforcing steel bars are staggered in the Z-axis direction; the cantilever steel beam is connected with the top of the outer wrapping steel pipe. By means of the first steel bars and the second steel bars which are staggered in the Z-axis direction, the shear capacity of the whole structure can be improved, and after concrete is solidified, the rigidity of the root of the stand awning can be improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of building construction, and specifically provides a steel pipe rigid joint node for stand canopy. BACKGROUND

[0002] For common sports stadiums, supporting warm-up fields, primary and secondary school sports stadiums or small activity sites, the overhanging length of the stand canopy is usually limited, about 8-15 meters. Due to the limitation of small size or specific modeling requirements at the back of the stand canopy, it is difficult to set up a steel pull rod that meets the stress requirements. In this situation, the stand canopy has to use a single-point large overhanging rigid force structure.

[0003] The traditional rigid joint method usually needs to insert the steel structure into the concrete column to meet the rigid joint requirements. However, this method has many drawbacks in practical application. On the one hand, due to the need for external steel columns to enhance the bearing capacity of the concrete column, the cross-sectional size of the concrete column is too large, which is in sharp contrast to the overall size of the small site, causing a visual conflict.

[0004] On the other hand, the joint between the steel column and the concrete column often faces the problem of size mismatch, which is characterized by "small head connecting large head". This structural mismatch significantly increases the risk of shear failure when encountering extreme weather conditions such as earthquakes and typhoons. Once this shear failure occurs, the energy dissipation and ductility of the joint will be severely affected. In addition, this joint method produces a sudden change in the visual appearance of the building, making the overall appearance less simple.

[0005] In addition, the method of wrapping the concrete column with a steel column also has the problem of construction intersection, increasing the construction difficulty and the complexity of steel structure hoisting, which often leads to poor application results in actual engineering, making it difficult to meet the design requirements and construction efficiency.

[0006] Therefore, a new rigid joint structure scheme is needed to solve the above problems. SUMMARY

[0007] The utility model aims to solve the above technical problems, i.e., at least to solve the problem of how to improve the root stiffness of the stand canopy.

[0008] The utility model provides a steel pipe rigid joint for stand canopy, including first concrete column, outer package steel pipe and cantilever steel beam, the outer package steel pipe sets up in the top of first concrete column, the outer package steel pipe is formed with the cavity that penetrates along its length direction, the cavity is suitable for the second concrete column that can be connected as integral structure with first concrete column is formed through the mode of pouring, the outer package steel pipe is equipped with a plurality of first reinforcing steel bars and a plurality of second reinforcing steel bars, first reinforcing steel bar is along X axle direction setting, second reinforcing steel bar is along Y axle direction setting, and first reinforcing steel bar and second reinforcing steel bar staggered setting along Z axle direction, cantilever steel beam with the top of outer package steel pipe is connected.

[0009] The utility model discloses a steel pipe rigid joint for stand canopy, including first concrete column, outer package steel pipe and cantilever steel beam, the outer package steel pipe sets up in the top of first concrete column, the outer package steel pipe is formed with the cavity that penetrates along its length direction, the cavity is suitable for the second concrete column that can be connected as integral structure with first concrete column is formed through the mode of pouring, the outer package steel pipe is equipped with a plurality of first reinforcing steel bars and a plurality of second reinforcing steel bars, first reinforcing steel bar is along X axle direction setting, second reinforcing steel bar is along Y axle direction setting, and first reinforcing steel bar and second reinforcing steel bar staggered setting along Z axle direction, cantilever steel beam with the top of outer package steel pipe is connected.

[0010] In some feasible embodiments of the steel pipe rigid joint for stand canopy, the outer surface of the outer package steel pipe is flush with the outer surface of the first concrete column.

[0011] Specifically, the outer contour of the outer package steel pipe is the same in shape and size as the outer contour of the first concrete column, and the outer surfaces of the two are flush. This design can avoid the problem of size mismatch, reduce construction errors and rework risks, thereby speeding up the project progress, improving construction efficiency, and improving the overall appearance and shear capacity of the joint structure, which is conducive to ensuring the safety and reliability of the joint structure.

[0012] In some feasible embodiments of the steel pipe rigid joint for stand canopy, the plurality of first reinforcing steel bars located on the same plane are arranged equidistantly; and / or, the plurality of second reinforcing steel bars located on the same plane are arranged equidistantly.

[0013] In some possible implementation modes of the steel pipe rigid joint for the grandstand canopy, column steel bars are arranged in the cavity along the Z-axis direction; and / or the first steel bars and the second steel bars are inserted into the outer steel pipe.

[0014] The column steel bars extending along the Z-axis direction, together with the first steel bars and the second steel bars extending along the X-axis direction and the Y-axis direction respectively, jointly construct a three-dimensional steel bar framework in the outer steel pipe, which is beneficial to enhancing the structural strength of the outer steel pipe. After the concrete in the outer steel pipe is solidified, the steel bar framework, the outer steel pipe and the first concrete column jointly bear external loads. This cooperative system not only ensures the integrity of the root structure of the grandstand canopy, but also improves the bending stiffness and the seismic performance of the root of the grandstand canopy.

[0015] In some possible implementation modes of the steel pipe rigid joint for the grandstand canopy, a pouring guide is further arranged in the cavity, and a pouring guide hole is arranged on the pouring guide.

[0016] The pouring guide hole on the pouring guide can guide the concrete to flow into the cavity of the outer steel pipe according to a predetermined path and position, thereby improving the accuracy and efficiency of pouring.

[0017] In some possible implementation modes of the steel pipe rigid joint for the grandstand canopy, the pouring guide hole includes a middle guide hole and a peripheral guide hole.

[0018] During pouring, the middle guide hole and the peripheral guide hole serve as a main introduction channel and an auxiliary introduction channel respectively, which is beneficial to improving the pouring efficiency and reducing the generation of bubbles and cavities during pouring, so that the inside of the outer steel pipe is more compact and solid.

[0019] In some possible implementation modes of the steel pipe rigid joint for the grandstand canopy, a top plate is arranged at the top end of the outer steel pipe, a pouring inlet is arranged on the top plate, and a sealing cover is arranged on the pouring inlet.

[0020] In some possible implementation modes of the steel pipe rigid joint for the grandstand canopy, first connecting pieces are arranged on both sides of the outer steel pipe, the cantilever steel beam includes a first steel beam and a second steel beam, and the first steel beam and the second steel beam are connected to the corresponding first connecting pieces respectively.

[0021] In some possible implementation modes of the steel pipe rigid joint for the grandstand canopy, the end of the first steel beam facing the outer steel pipe and the end of the second steel beam facing the outer steel pipe are open, and the corresponding first connecting pieces are inserted into the corresponding ends; or

[0022] The end of the first steel beam facing the outer steel pipe and the end of the second steel beam facing the outer steel pipe are protrudingly arranged, and the corresponding first connecting piece is sleeved to the corresponding end.

[0023] In this way, the outer steel pipe and the cantilever steel pipe are connected in a plug-in fitting mode, which not only has the advantages of convenient disassembly and maintenance, but also enables the cantilever steel beam and the outer steel pipe to bear force together when bearing load, thereby enhancing the stability and load-bearing capacity of the whole rigid joint structure.

[0024] In some possible embodiments of the steel pipe rigid joint for the stand canopy, the outer steel pipe is further provided with a second connecting piece, which is arranged on a surface adjacent to the surface provided with the first connecting piece, so that the direction of the first connecting piece is perpendicular to the direction of the second connecting piece. BRIEF DESCRIPTION OF DRAWINGS

[0025] The preferred embodiments of the present application will be described below with reference to the drawings, in which:

[0026] Figure 1 A perspective structural schematic view of the steel pipe rigid joint for the stand canopy is provided in the present application;

[0027] Figure 2 A disassembly schematic view of the steel pipe rigid joint for the stand canopy is provided in the present application;

[0028] Figure 3 An enlarged view of the first steel bar and the second steel bar of the steel pipe rigid joint for the stand canopy is provided in the present application;

[0029] Figure 4 A longitudinal sectional view of the steel pipe rigid joint for the stand canopy is provided in the present application;

[0030] Figure 5 A partial enlarged view of Figure 4 ;

[0031] Figure 6 A transverse sectional view of the outer steel pipe of the steel pipe rigid joint for the stand canopy is provided in the present application;

[0032] Figure 7 A perspective structural schematic view of the outer steel pipe of the steel pipe rigid joint for the stand canopy is provided in the present application;

[0033] Figure 8 A distribution schematic view of the pouring guide in the outer steel pipe of the steel pipe rigid joint for the stand canopy is provided in the present application;

[0034] Figure 9The structure schematic view of the pouring guide for the steel pipe rigid joint of the stand canopy is provided.

[0035] Reference signs:

[0036] 100, first concrete column; 200, outer steel pipe; 210, first steel bar; 220, second steel bar; 230, column steel bar; 240, pouring guide; 241, pouring guide hole; 2411, middle guide hole; 2412, peripheral guide hole; 250, top plate; 251, pouring inlet; 252, sealing cover; 260, first connecting piece; 270, second connecting piece; 280, second concrete column; 300, cantilever steel beam; 400, stand. DETAILED DESCRIPTION

[0037] In order to better illustrate the utility model, a large number of specific details are given in the specific embodiments below. Those skilled in the art should understand that the utility model can also be implemented without certain specific details.

[0038] In the description of the utility model, the terms "upper", "lower", "inner", "outer", "left", "right", "front", "rear" and other terms indicating direction or positional relationship are based on the direction or positional relationship in actual application, which is merely for the convenience of description, and is not indicative or suggestive of the device to be protected necessarily having a specific orientation, being constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the utility model. In addition, ordinal numbers such as "first", "second" are merely for the convenience of description, and are not used to indicate or suggest relative importance.

[0039] In addition, it also needs to be explained that, in the description of the utility model, unless explicitly specified and limited, the terms "mounting", "connecting" should be understood broadly, for example, can be fixed connection, can also be detachable connection or integral connection, can be mechanical connection, can also be electrical connection, can be directly connected, or indirectly connected through intermediate medium. For those skilled in the art, the specific meaning of the above terms in the utility model can be understood according to the specific circumstances.

[0040] The specific embodiments of the utility model will be described below with reference to the accompanying drawings. Figures 1 to 9 The steel pipe rigid joint for the stand canopy is described.

[0041] Please refer to Figures 1-5The utility model provides a steel pipe rigid joint node for stand canopy, steel pipe rigid joint node structure includes first concrete column 100, outer package steel pipe 200 and overhanging steel beam 300, outer package steel pipe 200 sets up in the top of first concrete column 100, overhanging steel beam 300 is connected with the top of outer package steel pipe 200, namely outer package steel pipe 200 is used to connect first concrete column 100 and overhanging steel beam 300. Outer package steel pipe 200 forms the cavity that penetrates along its length direction, and the cavity is suitable for the way of pouring and forms the second concrete column 280 that can be connected with first concrete column 100 as integral structure, a plurality of first steel bars 210 and a plurality of second steel bars 220 are equipped in outer package steel pipe 200, first steel bar 210 sets up along X axle direction, second steel bar 220 sets up along Y axle direction, and first steel bar 210 and second steel bar 220 staggeredly set along Z axle direction. Wherein, first steel bar 210 and second steel bar 220 are set in the cavity of outer package steel pipe 200 first, then the second concrete column 280 that can be connected with first concrete column 100 as integral structure is formed through the way of pouring.

[0042] It should be noted that, please refer to Figure 2 Or Figure 3 , the arrow X in the figure is X axle direction, the arrow Y in the figure is Y axle direction, the arrow Z in the figure is Z axle direction, in an embodiment, X axle, Y axle and Z axle are perpendicular to each other, in other embodiments, X axle and Y axle can not be perpendicular, X axle and Z axle can not be perpendicular, Y axle and Z axle can not be perpendicular. For the convenience of description, the utility model takes X axle, Y axle and Z axle as an example, and X axle direction, Y axle direction and Z axle direction can be front, back, left, right, up and down direction of outer package steel pipe 200 respectively, wherein, the length direction of outer package steel pipe 200 is the up and down direction of outer package steel pipe 200.

[0043] The utility model discloses a first concrete column 100 realizes and overhanging steel beam 300 firm connection through installing the outer package steel pipe 200, wherein, in the inside of outer package steel pipe 200, be provided with the first reinforcing steel bar 210 of extending along X axle direction and the second reinforcing steel bar 220 of extending along Y axle direction, and first reinforcing steel bar 210 and second reinforcing steel bar 220 are mutually interlaced in Z axle direction, to form a stable reinforcing steel bar framework in outer package steel pipe 200, this reinforcing steel bar framework can effectively resist shear force from all directions, to promote the shear capacity of whole structure. And, when the concrete (that is, second concrete column 280) in outer package steel pipe 200 solidifies, reinforcing steel bar and outer package steel pipe 200, first concrete column 100 are closely combined, form an inseparable whole, in this whole, reinforcing steel bar, outer package steel pipe 200 and first concrete column 100 synergic effect, jointly bear external load, show excellent mechanical properties. And when external force acts on structure, these reinforcing steels can effectively disperse and resist stress, and in combination with the excellent tensile property of reinforcing steel, the overall rigidity of outer package steel pipe 200 and first concrete column 100 can be further strengthened, thereby increasing the root stiffness of stand canopy, so that the stand canopy can effectively maintain the stability and safety of its structure when bearing single-point large overhanging load.

[0044] Please refer to Figure 1 The outer surface of outer package steel pipe 200 is flush with the outer surface of first concrete column 100, and the outer contour of outer package steel pipe 200 is the same in shape and size as that of first concrete column 100. With this design, on the one hand, from the construction point of view, it can greatly simplify the operation process and effectively avoid the construction cross problem caused by size difference. Specifically, this design enables outer package steel pipe 200 and first concrete column 100 to be easily aligned and positioned accurately during the construction stage, significantly reducing construction errors and rework risks, thereby speeding up the engineering progress and improving the construction efficiency.

[0045] On the other hand, from the perspective of structural performance, the perfect matching of the outer contours of outer package steel pipe 200 and first concrete column 100 fundamentally eliminates the size mismatch problem of "small head connecting large head". This improvement not only makes the node area smoother and more flat, improving the overall aesthetics of the building, but more importantly, it ensures that the connection between outer package steel pipe 200 and first concrete column 100 is more close and stable. This close fit not only enhances the overall stability of the node structure, but also when the two are closely combined, can form a synergistic effect to jointly resist the impact of shear force. This synergistic effect significantly improves the shear capacity of the node structure, effectively guarantees its energy dissipation and ductility performance, thereby improving the safety and reliability of the node structure.

[0046] It should be noted that, since the first concrete column 100 is the main supporting point of the stand canopy grounding, the height of the first concrete column 100 is generally greater than the height of the outer steel pipe 200, and in one application scenario, the height of the first concrete column 100 is two to three times the height of the outer steel pipe 200, for example, the height of the first concrete column 100 is 2.5 times the height of the outer steel pipe 200. Of course, according to different application scenarios, the specific ratio of the height of the first concrete column 100 to the height of the outer steel pipe 200 is also different, and the specific ratio is designed according to actual needs.

[0047] Please refer to Figures 3 to 5 The plurality of first steel bars 210 on the same plane are arranged at equal intervals, and the plurality of second steel bars 220 on the same plane are arranged at equal intervals. The first steel bars 210 and the second steel bars 220 arranged at equal intervals can more effectively disperse and resist shear force, prevent the outer steel pipe 200 from deforming or being damaged when subjected to shear, and effectively improve the shear capacity of the outer steel pipe 200; at the same time, the first steel bars 210 and the second steel bars 220 arranged at equal intervals can make the stress distribution of the concrete in the outer steel pipe 200 more uniform, effectively avoid the local damage phenomenon that may be caused by stress concentration, help to improve the stress performance of the outer steel pipe 200, and thereby prolong the service life thereof.

[0048] It should be noted that, in one embodiment, the first steel bars 210 and the second steel bars 220 can be fixed to the inside of the outer steel pipe 200 by welding or other means; in another embodiment, the first steel bars 210 and the second steel bars 220 are inserted into the outer steel pipe 200, specifically, the four side walls of the outer steel pipe 200 are each provided with a insertion hole, and the insertion holes on the opposite two side walls of the outer steel pipe 200 are correspondingly arranged, the first steel bars 210 are inserted into the insertion holes of the outer steel pipe 200 along the X-axis direction, and the second steel bars 220 are inserted into the insertion holes of the outer steel pipe 200 along the Y-axis direction.

[0049] Please refer to Figure 6 The cavity is provided with column steel bars 230 along the Z-axis direction, wherein the column steel bars 230 mainly include longitudinal bars and stirrups. Through close combination with the concrete, the longitudinal bars can effectively transmit and disperse pressure, improve the pressure bearing capacity of the outer steel pipe 200, and when subjected to external force, the longitudinal bars can resist deformation together with the concrete to prevent the outer steel pipe 200 from bending and deforming or being damaged. The stirrups can tightly wrap the longitudinal bars to prevent the longitudinal bars from buckling when subjected to pressure, thereby improving the overall stability and bearing capacity of the outer steel pipe 200 by restraining the deformation of the longitudinal bars, and the stirrups can enhance the overall stiffness of the outer steel pipe 200, thereby improving the anti-seismic performance of the outer steel pipe 200.

[0050] Further, the column steel bars 230 extending along the Z-axis direction, together with the first steel bars 210 and the second steel bars 220 extending along the X-axis direction and the Y-axis direction respectively, jointly construct a three-dimensional steel bar framework in the outer steel pipe 200, which greatly enhances the structural strength of the outer steel pipe 200 and effectively improves the resistance of the outer steel pipe 200 to external forces in multiple directions. When the concrete in the outer steel pipe 200 solidifies, the steel bar framework, the outer steel pipe 200 and the first concrete column 100 jointly bear external loads, and in combination with the design that the outer contour of the outer steel pipe 200 is the same size as the outer contour shape of the first concrete column 100, the problem of size mismatch at the joint between the outer steel pipe 200 and the first concrete column 100 can be avoided, thereby ensuring the integrity of the root of the stand canopy, and the formed steel bar framework can also improve the bending stiffness and seismic performance of the root of the stand canopy. Specifically, the column steel bars 230 in the Z-axis direction mainly bear longitudinal pressure, while the first steel bars 210 in the X-axis direction and the second steel bars 220 in the Y-axis direction effectively enhance the lateral stability and shear capacity of the structure, and the three work together to form a strong and flexible support system, providing a solid guarantee for the safety and stability of the stand canopy.

[0051] Please refer to Figures 7 to 9 The cavity is also provided with a pouring guide 240, and the pouring guide 240 is provided with a pouring guide hole 241. The pouring guide 240 can be a pouring guide plate, which is arranged at an upper position in the middle of the cavity. The pouring guide 240 and the pouring guide hole 241 arranged thereon can play a positioning and guiding role during the pouring of concrete, which is conducive to ensuring that the concrete can flow into the cavity of the outer steel pipe 200 according to the predetermined path and position, thereby improving the accuracy and efficiency of pouring.

[0052] Further, as Figure 9As shown, the pouring guide hole 241 includes a middle guide hole 2411 and a peripheral guide hole 2412, wherein the middle guide hole 2411 is arranged at the middle of the pouring guide plate, and the peripheral guide hole 2412 is arranged at the edge of the pouring guide plate, and in particular, the peripheral guide hole 2412 includes four corner guide holes distributed at the four corners of the pouring guide plate. The size of the middle guide hole 2411 is generally larger than that of the peripheral guide hole 2412, so that the middle guide hole 2411 can serve as the main guide channel for the concrete, effectively guiding a large amount of concrete to flow from the middle of the cavity of the outer steel pipe 200 and then uniformly to the surrounding, which helps to accelerate the overall pouring process of the concrete. At the same time, the peripheral guide hole 2412 plays an auxiliary role, which is responsible for guiding a small amount of concrete to flow accurately into the edge or corner area of the cavity, thereby realizing relatively fine pouring work. In this way, the concrete can more closely penetrate and fill every tiny corner in the cavity, greatly reducing the formation of bubbles and cavities, and thereby improving the compactness and overall strength of the internal structure of the outer steel pipe 200.

[0053] Specifically, the middle guide hole 2411 is a circular hole, and the peripheral guide hole 2412 is a quarter of a circular hole. Of course, the middle guide hole 2411 and the peripheral guide hole 2412 can also be square holes, oval holes or other holes, and the shapes of the middle guide hole 2411 and the peripheral guide hole 2412 are designed according to actual needs, which will not be described one by one in this embodiment.

[0054] Please refer to Figure 7 and Figure 8 , the top end of the outer steel pipe 200 is provided with a top plate 250, and the top plate 250 is provided with a pouring inlet 251, and the pouring inlet 251 is provided with a sealing cover 252. Through the pouring inlet 251, the construction personnel can conveniently pour the concrete into the inside of the outer steel pipe 200, and the construction personnel can directly observe the progress and quality of the concrete pouring through the pouring inlet 251, so as to timely adjust the construction strategy, and ensure the construction efficiency and accuracy. During the concrete pouring process, the sealing cover 252 can effectively prevent external impurities (such as dust, moisture, gravel, etc.) from entering the inside of the outer steel pipe 200 through the pouring inlet 251, thereby ensuring the purity and quality of the concrete.

[0055] Under different scenarios, the outer steel pipe 200 can be connected with the cantilever beam in different ways, and in particular, in one embodiment, please refer to Figure 7The two sides of the outer steel pipe 200 are provided with the first connecting piece 260, the cantilever steel beam 300 comprises a first steel beam and a second steel beam, the first steel beam and the second steel beam are connected with the corresponding first connecting piece 260 respectively, the end of the first steel beam facing the outer steel pipe 200 and the end of the second steel beam facing the outer steel pipe 200 are provided in an open manner, and the corresponding first connecting piece 260 is inserted into the corresponding end. The plug-in connection of the first steel beam and the second steel beam with the first connecting piece 260 can form a relatively stable connection structure between the cantilever steel beam 300 and the outer steel pipe 200, so that the cantilever steel beam 300 and the outer steel pipe 200 can jointly bear stress when bearing load, thereby enhancing the stability and bearing capacity of the entire rigid joint structure, and the plug-in connection mode is convenient to disassemble when needed, and is convenient for maintenance and replacement. Of course, in a specific application scenario, in order to further improve the strength and stability of the connection, the outer steel pipe 200 and the cantilever steel beam 300 can be additionally reinforced by bolts.

[0056] In another embodiment, the two sides of the outer steel pipe 200 are provided with the first connecting piece 260, the cantilever steel beam 300 comprises a first steel beam and a second steel beam, the first steel beam and the second steel beam are connected with the corresponding first connecting piece 260 respectively, the end of the first steel beam facing the outer steel pipe 200 and the end of the second steel beam facing the outer steel pipe 200 are provided in an open manner, and the corresponding first connecting piece 260 is inserted into the corresponding end. The plug-in connection of the first steel beam and the second steel beam with the first connecting piece 260 can form a relatively stable connection structure between the cantilever steel beam 300 and the outer steel pipe 200, so that the cantilever steel beam 300 and the outer steel pipe 200 can jointly bear stress when bearing load, thereby enhancing the stability and bearing capacity of the entire rigid joint structure, and the plug-in connection mode is convenient to disassemble when needed, and is convenient for maintenance and replacement. Of course, in a specific application scenario, in order to further improve the strength and stability of the connection, the outer steel pipe 200 and the cantilever steel beam 300 can be additionally reinforced by bolts.

[0057] Please refer to Figure 7 The outer steel pipe 200 is also provided with the second connecting piece 270, the second connecting piece 270 is arranged on a surface adjacent to the surface provided with the first connecting piece 260, so that the direction of the first connecting piece 260 is perpendicular to the direction of the second connecting piece 270. The second connecting piece 270 arranged in this way can be designed as a reserved connecting interface, so that when structural expansion or modification is needed in the future, the second connecting piece 270 can be used to conveniently connect the outer steel pipe 200 with other structures, which is beneficial to expand the use range.

[0058] Thus, the technical scheme of the utility model has been described in combination with the preferred embodiments shown in the drawings, but it is easy for those skilled in the art to understand that the protection scope of the utility model is obviously not limited to these specific embodiments. Those skilled in the art can make equivalent changes or replacements to the related technical features without departing from the principles of the utility model, and the technical schemes after the changes or replacements will all fall within the protection scope of the utility model.

Claims

1. A steel tubular rigid joint for a grandstand canopy, characterised in that, The utility model relates to a concrete column structure, comprising: a first concrete column; an outer steel tube arranged above the first concrete column, the outer steel tube being formed with a cavity penetrating along its length direction, the cavity being suitable for forming a second concrete column capable of being connected with the first concrete column as an integral structure by pouring, the outer steel tube being provided with a plurality of first steel bars and a plurality of second steel bars, the first steel bars being arranged along an X-axis direction, the second steel bars being arranged along a Y-axis direction, and the first steel bars and the second steel bars being staggered along a Z-axis direction; and a cantilever steel beam connected with a top of the outer steel tube.

2. The steel tubular moment-resisting connection for a bleacher canopy according to claim 1, wherein An outer surface of the outer steel tube is flush with an outer surface of the first concrete column.

3. The steel tubular moment-resisting connection for a bleacher canopy of claim 1, wherein, The first steel bars arranged on the same plane are equidistantly arranged; and / or The second steel bars arranged on the same plane are equidistantly arranged.

4. The steel tubular moment-resisting connection for a bleacher canopy of claim 1, wherein, The cavity is provided with column steel bars along the Z-axis direction; and / or The first steel bars and the second steel bars are inserted into the outer steel tube.

5. The steel tubular moment-resisting connection for a bleacher canopy of claim 1, wherein, The cavity is further provided with a pouring guide, the pouring guide being provided with pouring guide holes.

6. The steel tubular moment-resisting connection for a bleacher canopy of claim 5, wherein, The pouring guide holes include central guide holes and peripheral guide holes.

7. The steel tubular moment-resisting connection for a bleacher canopy of claim 1, wherein, A top end of the outer steel tube is provided with a top plate, the top plate being provided with a pouring inlet, the pouring inlet being provided with a sealing cover.

8. The steel tubular moment-resisting connection for a grandstand canopy according to any one of claims 1-7, wherein, Both sides of the outer steel tube are provided with first connecting members, the cantilever steel beam comprising a first steel beam and a second steel beam, the first steel beam and the second steel beam being connected with corresponding first connecting members respectively.

9. The steel tubular moment-resisting connection for a bleacher canopy of claim 8, wherein, Ends of the first steel beam and the second steel beam facing the outer steel tube are open, and corresponding first connecting members are inserted into corresponding ends; or Ends of the first steel beam and the second steel beam facing the outer steel tube are protruding, and corresponding first connecting members are sleeved to corresponding ends.

10. The steel tubular moment-resisting connection for a bleacher canopy of claim 9, wherein, The outer steel tube is further provided with second connecting members, the second connecting members being arranged on surfaces adjacent to surfaces provided with the first connecting members, so that directions of the first connecting members are perpendicular to directions of the second connecting members.

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