Column foot connecting joint of square steel tube column and construction method of column foot connecting joint

Abstract

The invention belongs to the technical field of building construction, and discloses a square steel pipe column base connecting node and a construction method thereof, the square steel pipe column base connecting node is used for connecting a square steel pipe column and a reinforced concrete foundation, and the square steel pipe column base connecting node comprises a connecting assembly and a square steel pipe column base; the connecting assembly is fixedly connected to the reinforced concrete foundation, the connecting assembly comprises a square protruding part protruding out of the top face of the reinforced concrete foundation, the column base is arranged to be arranged outside the square protruding part in a sleeving mode, and the central axis of the column base and the central axis of the square protruding part are collinear. The column feet are configured to be detachably connected to the square protruding parts through connecting bolts and are in clearance fit with the square protruding parts. Efficient and accurate connection between the square steel pipe column and the reinforced concrete foundation can be achieved, and meanwhile the characteristics of rapid disassembly and cyclic utilization are achieved.

Description

Technical Field

[0001] The invention relates to the technical field of building construction, and in particular to a square steel pipe column foot connection node and a construction method thereof. Background Art

[0002] As the construction industry's requirements for green buildings, low-carbon environmental protection, and construction efficiency continue to increase, prefabricated buildings have gradually become a hot trend in the construction field due to their significant advantages in shortening construction periods, improving quality, enhancing environmental protection, and improving construction safety. Especially in high-demand projects such as substations, prefabricated buildings can achieve fast, low-pollution, and high-precision construction, which meets the needs of modern construction. In prefabricated buildings, square steel pipe columns have gradually been widely used due to their excellent bearing capacity and high seismic resistance. The structure formed by connecting square steel pipe columns with reinforced concrete foundations can be used as one of the prefabricated components. Prefabricated buildings can be quickly constructed by assembling and connecting multiple similar prefabricated components at the construction site.

[0003] However, in the prior art, the column base of the square steel tube column is usually fixed to the reinforced concrete foundation by welding or cast-in-place concrete, but these two connection and fixing methods are complicated to operate and difficult to construct, and are prone to large positioning errors and safety hazards during on-site operations; in addition, the square steel tube column cannot be quickly disassembled after welding or cast-in-place concrete fixing, which limits its recycling capacity and is not conducive to the development of green buildings.

[0004] Therefore, it is urgent to propose a square steel tube column base connection node and a construction method thereof to solve the above technical problems. Summary of the invention

[0005] The object of the present invention is to provide a square steel tube column base connection node and a construction method thereof, which can realize efficient and precise connection between the square steel tube column and the reinforced concrete foundation, and at the same time have the characteristics of rapid disassembly and recycling.

[0006] To achieve this object, the present invention adopts the following technical solutions:

[0007] In a first aspect, the present invention provides a square steel tube column foot connection node for connecting a square steel tube column to a reinforced concrete foundation, the square steel tube column foot connection node comprising: a connection assembly and a foot of the square steel tube column;

[0008] The connecting assembly is fixedly connected to the reinforced concrete foundation, and the connecting assembly includes a square protrusion protruding from the top surface of the reinforced concrete foundation. The column foot is configured to be sleeved on the outside of the square protrusion, and the central axis of the column foot is colinear with the central axis of the square protrusion. The column foot is configured to be detachably connected to the square protrusion by connecting bolts and to have a clearance fit with the square protrusion.

[0009] In some embodiments, the connection component includes a first assembly part and a second assembly part; the first assembly part includes a first bottom plate and a plurality of side plates connected to each other, a receiving space with a top opening is formed between the plurality of side plates and the first bottom plate, and the outer surface of the first bottom plate and the outer surfaces of the plurality of side plates are fixedly installed on the reinforced concrete foundation; the second assembly part includes a connecting square tube, a top plate and a second bottom plate, the bottom of the connecting square tube is fixedly arranged on the second bottom plate, the top of the connecting square tube is penetrated through the top plate and protrudes from the top plate, the part of the connecting square tube protruding from the top plate is the square protrusion, the second assembly part is partially arranged in the receiving space and the second bottom plate is connected to the first bottom plate, the interior of the connecting square tube is used for concrete pouring to form a first concrete part, and the gap between the second assembly part and the plurality of side plates is used for concrete pouring to form a second concrete part; the connecting bolt is configured to pass through the column foot, the square protrusion and the first concrete part, so that the square steel pipe column can be detachably connected to the connecting square tube.

[0010] In some embodiments, each tube wall at the column foot is provided with a first mounting hole, the first mounting holes of two opposite tube walls of the column foot are at the same height, and the first mounting holes of two adjacent tube walls of the column foot are at different heights, each tube wall at the square raised portion is provided with a second mounting hole, the second mounting holes correspond one-to-one to the first mounting holes, and a through mounting channel is reserved inside the first concrete portion at the square raised portion, and the mounting channel extends from one of the second mounting holes of the square raised portion to another second mounting hole at the same height of the opposite tube wall.

[0011] In some embodiments, the first assembly part further includes an embedded anchor bolt, which is penetrated and connected to the first base plate, one end of the embedded anchor bolt is configured to be fixed inside the reinforced concrete foundation, and the other end of the embedded anchor bolt protrudes from the first base plate toward one side of the accommodating space, and the other end of the embedded anchor bolt is used for the installation of the second assembly part.

[0012] In some embodiments, a base anchor bar is fixedly disposed on the bottom outer surface of the first base plate, and the base anchor bar is configured to be fixed inside the reinforced concrete foundation.

[0013] In some embodiments, a plurality of first bolts are fixedly disposed on the inner surface and the outer surface of each of the side panels.

[0014] In some embodiments, the second assembly also includes a plurality of stiffening ribs, the plurality of stiffening ribs are connected to the circumferential outer surface of the connecting square tube, and the plurality of stiffening ribs are arranged at intervals along the circumference of the connecting square tube, the top end of each stiffening rib is connected to the top plate, and the bottom end of each stiffening rib is connected to the second bottom plate.

[0015] In some embodiments, a plurality of second pegs are fixedly disposed on the circumferential outer surface of the connecting square tube.

[0016] In some embodiments, the plurality of stiffening ribs are evenly arranged along the circumference of the connecting square tube.

[0017] In a second aspect, the present invention provides a construction method for a square steel pipe column foot connection node, comprising:

[0018] S1. Casting the first assembly part to the reinforced concrete foundation, so that the outer surface of the first bottom plate of the first assembly part and the outer surfaces of the plurality of side plates are fixed to the reinforced concrete foundation;

[0019] S2, placing the second assembly part in the accommodation space of the first assembly part, and connecting the second bottom plate of the second assembly part to the first bottom plate;

[0020] S3, pouring concrete into the interior of the connecting square tube of the second assembly part to form the first concrete part, and pouring concrete into the gap between the second assembly part and the plurality of side panels to form the second concrete part;

[0021] S4, hoisting the square steel pipe column, and making the column foot of the square steel pipe column be centered and sleeved on the outside of the square raised part of the connecting square pipe;

[0022] S5. Install the connecting bolts so that the connecting bolts pass through the column foot, the square raised portion and the first concrete portion to achieve a detachable connection between the square steel pipe column and the connecting square pipe.

[0023] Beneficial effects of the present invention:

[0024] The square steel tube column base connection node provided by the present invention is facilitated to realize the rapid centering of the column base by setting a square protrusion on the reinforced concrete foundation, and making the column base of the square steel tube column sleeved on the outside of the square protrusion, and the central axes of the two are collinear, which reduces the positioning error during the installation process and improves the construction accuracy. At the same time, the use of connecting bolts for detachable fixation avoids the construction complexity caused by welding or cast-in-place concrete, so that the square steel tube column can be easily disassembled and assembled, thereby improving its recycling capacity and meeting the needs of green buildings. In addition, the connection assembly can be prefabricated in the factory and fixed to the reinforced concrete foundation, that is, the complex force-bearing structure of the column base is optimized to the factory prefabrication stage, which can ensure the stability of the mechanical properties of the column base and fundamentally improve the construction quality and reliability; and the on-site construction only needs to hoist the square steel tube column and complete the installation through the connecting bolts, thereby effectively simplifying the on-site construction process and improving the on-site assembly efficiency.

[0025] The construction method of the square steel tube column column base connection node provided by the present invention optimizes the installation process of the square steel tube column, effectively improves the efficiency and construction quality of on-site assembly, and can meet the requirements of green buildings for the recycling of components. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly introduces the drawings required for use in the description of the embodiments of the present invention. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the contents of the embodiments of the present invention and these drawings without paying any creative work.

[0027] Figure 1 It is a schematic diagram of assembling a square steel pipe column and a reinforced concrete foundation provided by an embodiment of the present invention;

[0028] Figure 2 It is a schematic structural diagram of a square steel pipe column provided by an embodiment of the present invention;

[0029] Figure 3 is a schematic structural diagram of a first assembly provided by an embodiment of the present invention;

[0030] Figure 4 is a schematic diagram of the three-dimensional structure of a second assembly provided in an embodiment of the present invention;

[0031] Figure 5 is a cross-sectional view of a second assembly provided by an embodiment of the present invention from one viewing angle;

[0032] Figure 6 is a cross-sectional view of the second assembly provided by the embodiment of the present invention from another perspective;

[0033] Figure 7is a schematic diagram of fixing a first assembly member to a reinforced concrete foundation provided by an embodiment of the present invention;

[0034] Figure 8 is a schematic diagram of fixing a second assembly member to a first assembly member provided by an embodiment of the present invention;

[0035] Fig. 9 is a schematic diagram of pouring a first concrete part and a second concrete part provided by an embodiment of the present invention;

[0036] Fig.10 It is a schematic diagram of a square steel pipe column provided by an embodiment of the present invention, in which a square steel pipe column is centrally sleeved on a square protrusion;

[0037] Fig.11 is a schematic diagram of connecting a square steel pipe column to a square protrusion through connecting bolts provided in an embodiment of the present invention;

[0038] Fig.12 It is a schematic diagram of the disassembly of the square steel pipe column provided by an embodiment of the present invention.

[0039] In the figure:

[0040] 100, square steel pipe column; 110, column foot; 200, reinforced concrete foundation; 300, connection assembly; 400, square protrusion; 500, connection bolt;

[0041] 1. First assembly part; 10. Accommodation space; 11. First bottom plate; 12. Side plate; 13. Pre-buried anchor bolts; 14. Base anchor bar; 15. First bolt;

[0042] 2. Second assembly part; 21. Connecting square tube; 22. Top plate; 23. Second bottom plate; 24. Stiffening rib; 25. Second bolt;

[0043] 3. First concrete part; 31. Installation channel;

[0044] 4. The second concrete part;

[0045] 5. First mounting hole;

[0046] 6. Second mounting hole. DETAILED DESCRIPTION

[0047] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Generally, the components of the embodiments of the present invention described and shown in the drawings here can be arranged and designed in various different configurations.

[0048] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the invention claimed for protection, but merely represents selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0049] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, further definition and explanation thereof is not required in subsequent drawings.

[0050] In the description of the present invention, it should be noted that the terms "upper", "lower", "left", "right", "vertical", "horizontal", "inside", "outside", etc. indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, or are the positions or positional relationships in which the inventive product is usually placed when in use. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", "third", etc. are only used to distinguish the description, and cannot be understood as indicating or implying relative importance. In the description of the present invention, unless otherwise specified, "multiple" means two or more.

[0051] In the description of the present invention, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "disposed" and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0052] In the present invention, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may include that the first and second features are in direct contact, or may include that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, a first feature being "above", "above" and "above" a second feature includes that the first feature is directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being "below", "below" and "below" a second feature includes that the first feature is directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0053] Embodiments of the present invention are described in detail below, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0054] like Figures 1 to 12 As shown, the square steel tube column foot connection node provided in this embodiment is used for connecting the square steel tube column 100 with the reinforced concrete foundation 200. The square steel tube column foot connection node includes: a connection assembly 300 and a foot 110 of the square steel tube column 100.

[0055] The connection assembly 300 is fixedly connected to the reinforced concrete foundation 200, and the connection assembly 300 includes a square protrusion 400 protruding from the top surface of the reinforced concrete foundation 200. The column foot 110 is configured to be sleeved on the outside of the square protrusion 400, and the central axis of the column foot 110 is colinear with the central axis of the square protrusion 400. The column foot 110 is configured to be detachably connected to the square protrusion 400 by a connecting bolt 500 and to be gap-fitted with the square protrusion 400.

[0056] In specific implementation, the connection assembly 300 is first fixed to the reinforced concrete foundation 200, and then the square steel pipe column 100 is hoisted so that the column foot 110 of the square steel pipe column 100 is sleeved on the outside of the square raised portion 400, and finally the connection bolt 500 is installed to achieve a detachable connection between the square steel pipe column 100 and the connection assembly 300. When the square steel pipe column 100 needs to be recycled, the square steel pipe column 100 can be disassembled by simply removing the connection bolt 500.

[0057] The square steel pipe column foot connection node provided in this embodiment is facilitated to realize the rapid centering of the column foot 110 by setting a square protrusion 400 on the reinforced concrete foundation 200, and making the column foot 110 of the square steel pipe column 100 sleeved on the outside of the square protrusion 400, and the central axis of the two are in line, which is conducive to realizing the rapid centering of the column foot 110, reducing the positioning error during the installation process, and improving the construction accuracy. At the same time, the use of connecting bolts 500 for detachable fixation avoids the construction complexity brought by welding or cast-in-place concrete, so that the square steel pipe column 100 can be easily disassembled and assembled, thereby improving its recycling capacity and meeting the needs of green buildings. In addition, the connecting assembly 300 can be prefabricated in the factory and fixed to the reinforced concrete foundation 200, that is, the complex force-bearing structure of the column foot 110 is optimized to the factory prefabrication stage, which can ensure the stability of the mechanical properties of the column foot 110, and fundamentally improve the construction quality and reliability; and the on-site construction only needs to hoist the square steel pipe column 100 and complete the installation through the connecting bolts 500, thereby effectively simplifying the on-site construction process and improving the on-site assembly efficiency.

[0058] like Figure 1 to Figure 6As shown, in some embodiments, the connection assembly 300 includes a first assembly part 1 and a second assembly part 2 .

[0059] The first assembly part 1 includes a first bottom plate 11 and a plurality of side plates 12 connected to each other, a receiving space 10 with a top opening is formed between the plurality of side plates 12 and the first bottom plate 11, and the outer surface of the first bottom plate 11 and the outer surfaces of the plurality of side plates 12 are fixedly mounted on a reinforced concrete foundation 200. The second assembly part 2 includes a connecting square tube 21, a top plate 22, and a second bottom plate 23, the bottom of the connecting square tube 21 is fixedly mounted on the second bottom plate 23, the top of the connecting square tube 21 is penetrated through the top plate 22 and protrudes from the top plate 22, and the portion of the connecting square tube 21 protruding from the top plate 22 is a square protrusion 400. The second assembly part 2 is partially disposed in the receiving space 10 and the second bottom plate 23 is connected to the first bottom plate 11, the interior of the connecting square tube 21 is used for concrete pouring to form the first concrete part 3, and the gap between the second assembly part 2 and the plurality of side plates 12 is used for concrete pouring to form the second concrete part 4. The connecting bolt 500 is configured to penetrate the column foot 110 , the square protruding portion 400 and the first concrete portion 3 , so that the square steel pipe column 100 can be detachably connected to the connecting square pipe 21 .

[0060] Through the combined design of the first assembly part 1 and the second assembly part 2, the connection component 300 forms a double-layer structure, and the first concrete part 3 and the second concrete part 4 are poured inside to form a composite force-bearing structure, which is beneficial to improving the durability and impact resistance of the connection node.

[0061] The part of the connecting square tube 21 protruding from the top plate 22 is a square protrusion 400 . The height of the square protrusion 400 is determined by the force calculation result, and the connection strength between the square protrusion 400 and the square steel tube column 100 must be guaranteed.

[0062] Optionally, the first bottom plate 11 and the plurality of side plates 12 are all steel plates, and the connecting square tube 21 is a hollow steel pier.

[0063] Correspondingly, this embodiment also provides a construction method for the above-mentioned square steel pipe column foot connection node, comprising the following steps (corresponding to Figure 7 to Figure 11 ):

[0064] S1, casting the first assembly part 1 to the reinforced concrete foundation 200, so that the outer surface of the first bottom plate 11 and the outer surfaces of the plurality of side plates 12 of the first assembly part 1 are fixed to the reinforced concrete foundation 200;

[0065] S2, placing the second assembly part 2 in the receiving space 10 of the first assembly part 1, and connecting the second bottom plate 23 of the second assembly part 2 to the first bottom plate 11;

[0066] S3, pouring concrete into the connecting square tube 21 of the second assembly part 2 to form a first concrete part 3, and pouring concrete into the gap between the second assembly part 2 and the plurality of side panels 12 to form a second concrete part 4;

[0067] S4, hoisting the square steel pipe column 100, and making the column foot 110 of the square steel pipe column 100 be centered and sleeved on the outside of the square raised portion 400 connected to the square tube 21;

[0068] S5 . Install the connecting bolts 500 , so that the connecting bolts 500 pass through the column foot 110 , the square raised portion 400 and the first concrete portion 3 , so as to achieve a detachable connection between the square steel pipe column 100 and the connecting square pipe 21 .

[0069] That is, in step S1 , the first concrete pouring and curing are performed to fix the first assembly part 1 to the reinforced concrete foundation 200 ; and in step S3 , the second concrete pouring and curing are performed to form the first concrete part 3 and the second concrete part 4 .

[0070] When the square steel pipe column 100 needs to be removed, the square steel pipe column 100 can be removed by simply removing the connecting bolts 500. Fig.12 ).

[0071] In the construction method of the square steel pipe column foot connection node provided in this embodiment, steps S1 to S3 can be pre-fabricated in the factory, and only steps S4 and S5 need to be executed during on-site construction, thereby optimizing the installation process of the square steel pipe column 100 and effectively improving the efficiency of on-site assembly and the quality of construction. The construction method uses connecting bolts 500 for detachable fixation, so that the installation of the square steel pipe column 100 only requires centering and fixing the connecting bolts 500, avoiding the construction complexity caused by welding or cast-in-place concrete methods, enabling the square steel pipe column 100 to be easily installed and disassembled, improving construction efficiency, and meeting the requirements of green buildings for the recycling of components.

[0072] like Figure 2 and Fig.10 As shown, in some embodiments, each tube wall at the column foot 110 is provided with a first mounting hole 5, the first mounting holes 5 of two opposite tube walls of the column foot 110 are at the same height, the first mounting holes 5 of two adjacent tube walls of the column foot 110 are at different heights, each tube wall at the square raised portion 400 is provided with a second mounting hole 6, the second mounting holes 6 correspond one-to-one to the first mounting holes 5, and a through mounting channel 31 is reserved inside the first concrete portion 3 at the square raised portion 400, and the mounting channel 31 extends from one second mounting hole 6 of the square raised portion 400 to another second mounting hole 6 at the same height of the opposite tube wall.

[0073] Specifically, Fig.10Taking the orientation in as an example, a connecting bolt 500 can be extended from a first mounting hole 5 on the left side of the column base 110, and pass through the second mounting hole 6 on the left side, the corresponding mounting channel 31, the second mounting hole 6 on the right side and the first mounting hole 5 on the right side in sequence and extend out to complete the installation connection of the connecting bolt 500, and the installation of the remaining connecting bolts 500 is the same.

[0074] For example, the square steel pipe column foot connection node in this embodiment can be installed with twelve connection bolts 500, which include two mutually perpendicular groups, each group includes six connection bolts 500 arranged at intervals, three of the six connection bolts 500 in the first group are at the first height, and the other three are at the second height, and three of the six connection bolts 500 in the second group are at the third height, and the other three are at the fourth height. Among them, the first height, the second height, the third height and the fourth height represent different height positions, that is, the twelve connection bolts 500 are staggered and do not interfere with each other. Of course, the number of connection bolts 500 is not limited to this, and can be determined according to actual conditions.

[0075] The provision of the first mounting hole 5, the second mounting hole 6 and the mounting channel 31 is conducive to achieving a stable bolt connection. Furthermore, the provision of multiple connecting bolts 500 can increase the connection strength and effectively reduce the risk of deformation caused by concentrated force on a single connecting bolt 500.

[0076] like Figure 3 and Figure 7 As shown, in some embodiments, the first assembly part 1 also includes a pre-embedded anchor bolt 13, which is penetrated and connected to the first base plate 11, and one end of the pre-embedded anchor bolt 13 is configured to be fixed inside the reinforced concrete foundation 200, and the other end of the pre-embedded anchor bolt 13 protrudes from the first base plate 11 toward one side of the accommodating space 10, and the other end of the pre-embedded anchor bolt 13 is used for the installation of the second assembly part 2.

[0077] By providing the embedded anchor bolts 13, on the one hand, it is helpful to enhance the connection strength between the first assembly part 1 and the reinforced concrete foundation 200; on the other hand, the other end of the embedded anchor bolts 13 can be used for bolt connection with the second assembly part 2, which facilitates the subsequent installation and positioning of the second assembly part 2.

[0078] Optionally, the number of the embedded anchor bolts 13 is set to be multiple, and the multiple embedded anchor bolts 13 are arranged at intervals. Exemplarily, the number of the embedded anchor bolts 13 can be set to 3, 6, 9, etc., which can be determined according to actual conditions.

[0079] like Figure 3 and Figure 7As shown, in some embodiments, a base anchor bar 14 is fixed to the bottom outer surface of the first base plate 11, and the base anchor bar 14 is configured to be fixed inside the reinforced concrete foundation 200. The provision of the base anchor bar 14 can further improve the connection strength between the first base plate 11 and the reinforced concrete foundation 200.

[0080] Optionally, the number of the base anchor bars 14 is set to be multiple, and the multiple base anchor bars 14 are arranged at intervals. For example, the number of the base anchor bars 14 can be set to 4, 8, 12, etc., which can be determined according to actual conditions.

[0081] like Figure 3 and Fig. 9 As shown, in some embodiments, a plurality of first bolts 15 are fixedly disposed on the inner surface and the outer surface of each side plate 12. In this way, the first bolts 15 on the inner surface of the side plate 12 are conducive to improving the connection strength between the side plate 12 and the second concrete part 4, and the first bolts 15 on the outer surface of the side plate 12 are conducive to improving the connection strength between the side plate 12 and the reinforced concrete foundation 200.

[0082] like Figures 4 to 6 As shown, in some embodiments, the second assembly part 2 also includes a plurality of stiffening ribs 24, the plurality of stiffening ribs 24 are connected to the circumferential outer surface of the connecting square tube 21, and the plurality of stiffening ribs 24 are arranged at intervals along the circumference of the connecting square tube 21, the top end of each stiffening rib 24 is connected to the top plate 22, and the bottom end of each stiffening rib 24 is connected to the second bottom plate 23.

[0083] By providing a plurality of stiffening ribs 24, the overall structure of the second assembly part 2 forms a stable force system, which is beneficial to improving the overall stiffness of the connecting square tube 21, enhancing the deformation resistance of the connecting square tube 21 when subjected to force, and effectively ensuring the reliability of the connection between the column foot 110 and the square protrusion 400.

[0084] Optionally, a plurality of stiffening ribs 24 are evenly arranged along the circumference of the connecting square tube 21. Such an arrangement helps to make the force on the second assembly part 2 more even.

[0085] like Figure 5 As shown, in some embodiments, a plurality of second bolts 25 are fixedly disposed on the circumferential outer surface of the connecting square tube 21. The plurality of second bolts 25 are beneficial to enhancing the connection strength between the connecting square tube 21 and the second concrete part 4.

[0086] Obviously, the above embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not intended to limit the embodiments of the present invention. For those skilled in the art, various obvious changes, readjustments and substitutions can be made without departing from the protection scope of the present invention. It is not necessary and impossible to list all the embodiments here. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the claims of the present invention.

Claims

1. Square steel tube column base connection node, characterized in that: Used for connecting a square steel tube column (100) to a reinforced concrete foundation (200), the square steel tube column foot connection node comprising: a connection component (300) and a foot (110) of the square steel tube column (100); The connection assembly (300) is fixedly connected to the reinforced concrete foundation (200), and the connection assembly (300) includes a square protrusion (400) protruding from the top surface of the reinforced concrete foundation (200). The column foot (110) is configured to be sleeved on the outside of the square protrusion (400), and the central axis of the column foot (110) is colinear with the central axis of the square protrusion (400). The column foot (110) is configured to be detachably connected to the square protrusion (400) through a connecting bolt (500) and to be clearance-matched with the square protrusion (400).

2. The square steel tube column base connection node according to claim 1, characterized in that: The connection component (300) comprises a first assembly part (1) and a second assembly part (2); the first assembly part (1) comprises a first bottom plate (11) and a plurality of side plates (12) connected to each other, a receiving space (10) with a top opening is formed between the plurality of side plates (12) and the first bottom plate (11), and the outer surface of the first bottom plate (11) and the outer surfaces of the plurality of side plates (12) are fixedly mounted on the reinforced concrete foundation (200); the second assembly part (2) comprises a connecting square tube (21), a top plate (22) and a second bottom plate (23), the bottom of the connecting square tube (21) is fixedly mounted on the second bottom plate (23), the top of the connecting square tube (21) is penetrated through the top plate (22) and protrudes from the top plate (2 2), the portion of the connecting square tube (21) protruding from the top plate (22) is the square raised portion (400), the second assembly part (2) is partially arranged in the accommodating space (10) and the second bottom plate (23) is connected to the first bottom plate (11), the interior of the connecting square tube (21) is used for pouring concrete to form a first concrete part (3), and the gap between the second assembly part (2) and the plurality of side plates (12) is used for pouring concrete to form a second concrete part (4); the connecting bolt (500) is configured to pass through the column foot (110), the square raised portion (400) and the first concrete part (3), so that the square steel pipe column (100) can be detachably connected to the connecting square tube (21).

3. The square steel tube column base connection node according to claim 2, characterized in that: Each tube wall at the column foot (110) is provided with a first mounting hole (5), the first mounting holes (5) of two opposite tube walls of the column foot (110) are at the same height, and the first mounting holes (5) of two adjacent tube walls of the column foot (110) are at different heights, each tube wall at the square raised portion (400) is provided with a second mounting hole (6), the second mounting holes (6) correspond one-to-one to the first mounting holes (5), and a through mounting channel (31) is reserved inside the first concrete portion (3) at the square raised portion (400), the mounting channel (31) extending from one of the second mounting holes (6) of the square raised portion (400) to another of the second mounting holes (6) at the same height of the opposite tube wall.

4. The square steel tube column base connection node according to claim 2, characterized in that: The first assembly part (1) further comprises a pre-embedded anchor bolt (13), the pre-embedded anchor bolt (13) being passed through and connected to the first base plate (11), one end of the pre-embedded anchor bolt (13) being configured to be fixed inside the reinforced concrete foundation (200), the other end of the pre-embedded anchor bolt (13) protruding from the first base plate (11) toward one side of the accommodating space (10), and the other end of the pre-embedded anchor bolt (13) being used for installation of the second assembly part (2).

5. The square steel tube column base connection node according to claim 4, characterized in that: A base anchor bar (14) is fixedly provided on the bottom outer surface of the first base plate (11), and the base anchor bar (14) is configured to be fixed inside the reinforced concrete foundation (200).

6. The square steel tube column base connection node according to claim 5, characterized in that: A plurality of first bolts (15) are fixedly disposed on the inner surface and the outer surface of each side plate (12).

7. The square steel tube column base connection node according to any one of claims 2 to 6, characterized in that: The second assembly part (2) further comprises a plurality of stiffening ribs (24), wherein the plurality of stiffening ribs (24) are connected to the circumferential outer surface of the connecting square tube (21), and the plurality of stiffening ribs (24) are arranged at intervals along the circumference of the connecting square tube (21), wherein the top end of each stiffening rib (24) is connected to the top plate (22), and the bottom end of each stiffening rib (24) is connected to the second bottom plate (23).

8. The square steel tube column base connection node according to claim 7, characterized in that: A plurality of second bolts (25) are fixedly arranged on the circumferential outer surface of the connecting square tube (21).

9. The square steel tube column base connection node according to claim 7, characterized in that: The plurality of stiffening ribs (24) are evenly arranged along the circumference of the connecting square tube (21).

10. A construction method for a square steel tube column foot connection node according to any one of claims 2 to 9, characterized in that: include: S1. Casting the first assembly part (1) onto the reinforced concrete foundation (200), so that the outer surface of the first bottom plate (11) of the first assembly part (1) and the outer surfaces of the plurality of side plates (12) are fixed to the reinforced concrete foundation (200); S2, placing the second assembly part (2) in the accommodating space (10) of the first assembly part (1), and connecting the second bottom plate (23) of the second assembly part (2) to the first bottom plate (11); S3, pouring concrete into the interior of the connecting square tube (21) of the second assembly part (2) to form the first concrete part (3), and pouring concrete into the gap between the second assembly part (2) and the plurality of side panels (12) to form the second concrete part (4); S4, hoisting the square steel pipe column (100), and making the column foot (110) of the square steel pipe column (100) be centered and sleeved on the outside of the square protrusion (400) of the connecting square pipe (21); S5. Install the connecting bolt (500) so that the connecting bolt (500) passes through the column foot (110), the square raised portion (400) and the first concrete portion (3), so as to achieve a detachable connection between the square steel pipe column (100) and the connecting square pipe (21).

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