Square steel pipe column base connecting joint and construction method thereof

Abstract

The application belongs to the technical field of building construction, and discloses a square steel pipe column foot connecting joint and a construction method thereof, which is used for connecting between a square steel pipe column and a reinforced concrete foundation. The square steel pipe column foot connecting joint comprises a connecting assembly and a column foot of the square steel pipe column. The connecting assembly is fixedly connected to the reinforced concrete foundation. The connecting assembly comprises a square protruding part protruding from the top surface of the reinforced concrete foundation. The column foot is configured to be sleeved outside the square protruding part, and the central axis of the column foot is collinear with the central axis of the square protruding part. The column foot is configured to be detachably connected to the square protruding part through connecting bolts and to be matched with the square protruding part through a gap. The application can realize efficient and accurate connection between the square steel pipe column and the reinforced concrete foundation, and has the characteristics of rapid disassembly and recycling.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of building construction, and particularly relates to a square steel pipe column foot connecting joint and a construction method thereof. BACKGROUND

[0002] With the increasing requirements of the building industry on green buildings, low-carbon environmental protection and construction efficiency, prefabricated buildings gradually become a popular trend in the building field due to their significant advantages in shortening the construction period, improving quality, enhancing environmental protection and improving construction safety. Especially in high-demand projects such as substations, prefabricated buildings can achieve rapid, low-pollution and high-precision construction, meeting the needs of modernization. In prefabricated buildings, square steel pipe columns are gradually widely used due to their excellent bearing capacity and high seismic performance. The structure formed by connecting the square steel pipe column with the reinforced concrete foundation can be one of the prefabricated components, and the prefabricated building can be quickly built by assembling and connecting multiple similar prefabricated components on the construction site.

[0003] However, in the prior art, the column foot of the square steel pipe column is usually fixed to the reinforced concrete foundation by welding or cast-in-place concrete, but these two connection and fixing methods are complex to operate and difficult to construct, and can easily cause large positioning errors and safety hazards during on-site operation. In addition, the square steel pipe column fixed by welding or cast-in-place concrete cannot be quickly disassembled, which limits its recycling ability and is not conducive to the development of green buildings.

[0004] Therefore, it is urgent to provide a square steel pipe column foot connecting joint and a construction method thereof to solve the above technical problems. SUMMARY

[0005] The purpose of the present application is to provide a square steel pipe column foot connecting joint and a construction method thereof, which can achieve efficient and accurate connection between the square steel pipe column and the reinforced concrete foundation, and has the characteristics of quick disassembly and recycling.

[0006] To achieve this purpose, the present application adopts the following technical solutions:

[0007] In a first aspect, the present application provides a square steel pipe column foot connecting joint for connecting between a square steel pipe column and a reinforced concrete foundation, which comprises a connecting assembly and a column foot of the square steel pipe column.

[0008] The connecting assembly is fixedly connected to the reinforced concrete foundation, and the connecting assembly comprises a square protruding portion protruding from a top surface of the reinforced concrete foundation. The column foot is configured to be sleeved outside the square protruding portion, and a central axis of the column foot is collinear with a central axis of the square protruding portion. The column foot is configured to be detachably connected to the square protruding portion by a connecting bolt, and a gap is formed between the column foot and the square protruding portion.

[0009] In some embodiments, the connecting assembly comprises a first assembly and a second assembly. The first assembly comprises a first bottom plate and a plurality of side plates connected to each other, and a containing space with a top opening is formed between the plurality of side plates and the first bottom plate. An outer surface of the first bottom plate and outer surfaces of the plurality of side plates are fixedly installed on the reinforced concrete foundation. The second assembly comprises a connecting square tube, a top plate, and a second bottom plate. A bottom of the connecting square tube is fixedly arranged on the second bottom plate. A top of the connecting square tube penetrates through the top plate and protrudes from the top plate. A portion of the connecting square tube protruding from the top plate is the square protruding portion. The second assembly is partially arranged in the containing space, and the second bottom plate is connected to the first bottom plate. An inner portion of the connecting square tube is used for pouring concrete to form a first concrete portion. A gap between the second assembly and the plurality of side plates is used for pouring concrete to form a second concrete portion. The connecting bolt is configured to penetrate through the column foot, the square protruding portion, and the first concrete portion, so that the square steel tube column is detachably connected to the connecting square tube.

[0010] In some embodiments, each pipe wall at the column foot is provided with a first mounting hole. The first mounting holes of the opposite two pipe walls of the column foot are at the same height. The first mounting holes of the adjacent two pipe walls of the column foot are at different heights. Each pipe wall at the square protruding portion is provided with a second mounting hole corresponding to the first mounting hole. An installation channel is reserved inside the first concrete portion at the square protruding portion. The installation channel extends from one second mounting hole of the square protruding portion to another second mounting hole of the opposite pipe wall at the same height.

[0011] In some embodiments, the first assembly further comprises a pre-buried anchor bolt. The pre-buried anchor bolt is connected to the first bottom plate. One end of the pre-buried anchor bolt is configured to be fixed inside the reinforced concrete foundation. The other end of the pre-buried anchor bolt protrudes from the first bottom plate towards one side of the containing space. The other end of the pre-buried anchor bolt is used for installation of the second assembly.

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

[0013] In some embodiments, the inner surface and the outer surface of each of the side plates are fixedly provided with a plurality of first studs.

[0014] In some embodiments, the second assembly further comprises 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 of the stiffening ribs is connected to the top plate, and the bottom end of each of the stiffening ribs is connected to the second bottom plate.

[0015] In some embodiments, the circumferential outer surface of the connecting square tube is fixedly provided with a plurality of second studs.

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

[0017] In a second aspect, the present application provides a construction method of a square steel tube column base connecting joint, comprising:

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

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

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

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

[0022] S5, installing the connecting bolt, so that the connecting bolt penetrates through the column foot, the square protruding part and the first concrete part, to realize the detachable connection between the square steel tube column and the connecting square tube.

[0023] The beneficial effects of the present application are:

[0024] The square steel pipe column foot connecting joint provided by the application has the advantages that the square protruding part is arranged on the reinforced concrete foundation, the column foot of the square steel pipe column is sleeved outside the square protruding part, and the center axes of the two are collinear, which is beneficial to realize the rapid centering of the column foot, reduces the positioning error in the installation process, and improves the construction precision. Meanwhile, the connecting bolt is used for detachable fixing, which avoids the construction complexity caused by welding or cast-in-place concrete, enables the square steel pipe column to be conveniently disassembled and assembled, and thus improves the recycling ability and meets the demand of green building. In addition, the connecting assembly can be prefabricated in the factory and fixed to the reinforced concrete foundation, that is, the complex stress structure of the column foot is optimized to the prefabrication stage in the factory, which can ensure the stability of the mechanical properties of the column foot and fundamentally improves the construction quality and reliability; and the on-site construction only needs to hoist the square steel pipe column and complete the installation through the connecting bolt, thereby effectively simplifying the on-site construction process and improving the on-site assembly efficiency.

[0025] The construction method of the square steel pipe column foot connecting joint provided by the application optimizes the installation process of the square steel pipe column, effectively improves the efficiency and construction quality of on-site assembly, and meets the requirement of green building on the recycling of components. BRIEF DESCRIPTION OF DRAWINGS

[0026] In order to more clearly illustrate the technical solutions in the embodiments of the application, the drawings needed to be used in the description of the embodiments of the application will be briefly introduced. Obviously, the drawings in the following description are only some embodiments of the application, and other drawings can be obtained by those skilled in the art without creative labor on the basis of the contents of the embodiments of the application and the drawings.

[0027] Figure 1 is an assembly schematic view of the square steel pipe column and the reinforced concrete foundation provided by the embodiments of the application;

[0028] Figure 2 is a structural schematic view of the square steel pipe column provided by the embodiments of the application;

[0029] Figure 3 is a structural schematic view of the first assembly part provided by the embodiments of the application;

[0030] Figure 4 is a three-dimensional structural schematic view of the second assembly part provided by the embodiments of the application;

[0031] Figure 5 is a sectional view of the second assembly part from one perspective provided by the embodiments of the application;

[0032] Figure 6 is a sectional view of the second assembly part from another perspective provided by the embodiments of the application;

[0033] Figure 7is a schematic view of fixing the first assembly part to the reinforced concrete foundation provided by the embodiment of the present application;

[0034] Figure 8 is a schematic view of fixing the second assembly part to the first assembly part provided by the embodiment of the present application;

[0035] Figure 9 is a schematic view of pouring to form the first concrete part and the second concrete part provided by the embodiment of the present application;

[0036] Figure 10 is a schematic view of sleeving the square steel pipe column centering sleeve on the square protruding part provided by the embodiment of the present application;

[0037] Figure 11 is a schematic view of connecting the square steel pipe column to the square protruding part by the connecting bolt provided by the embodiment of the present application;

[0038] Figure 12 is a schematic view of the square steel pipe column when disassembled provided by the embodiment of the present application.

[0039] In the figure:

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

[0041] 1, first assembly part; 10, containing space; 11, first bottom plate; 12, side plate; 13, embedded anchor bolt; 14, base anchor bar; 15, first stud;

[0042] 2, second assembly part; 21, connecting square tube; 22, top plate; 23, second bottom plate; 24, stiffening rib; 25, second stud;

[0043] 3, first concrete part; 31, installation channel;

[0044] 4, second concrete part;

[0045] 5, first installation hole;

[0046] 6, second installation hole. DETAILED DESCRIPTION

[0047] In order to make the purpose, technical scheme and advantages of the embodiments of the present application more clear, the technical scheme in the embodiments of the present application will be described clearly and completely below in combination with the drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, not all the embodiments. The components of the embodiments of the present application 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 application provided in the accompanying drawings is not intended to limit the scope of the application as claimed, but merely represents selected embodiments of the application. All other embodiments obtained by persons of ordinary skill in the art based on the embodiments of the application without creative labor fall within the scope of protection of the application.

[0049] It should be noted that similar reference numbers and letters refer to similar items in the following drawings, and therefore, once an item is defined in one drawing, it need not be further defined and explained in subsequent drawings.

[0050] In the description of the application, it should be noted that the terms "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship when the product of the application is usually placed, and are only for the convenience of describing the application and simplifying the description, and therefore cannot be understood as indicating or implying that the indicated device or element must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the application. In addition, the terms "first", "second", "third" and the like are only used to distinguish the description and cannot be understood as indicating or implying relative importance. In the description of the application, unless otherwise specified, the meaning of "a plurality of" is two or more.

[0051] In the description of the application, it should also be noted that, unless otherwise specified and limited, the terms "provided", "connected" should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected; it can be mechanically connected, or it can be electrically connected. For those of ordinary skill in the art, the specific meaning of the above terms in the application can be understood according to the specific circumstances.

[0052] In the present application, unless otherwise specified and limited, the "upper" or "lower" of the first feature to the second feature can include that the first and second features are in direct contact, or that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, the "upper", "above" and "on" of the first feature to the second feature includes that the first feature is directly above and obliquely above the second feature, or only indicates that the horizontal height of the first feature is higher than that of the second feature. The "under", "below" and "under" of the first feature to the second feature includes that the first feature is directly below and obliquely below the second feature, or only indicates that the horizontal height of the first feature is less than that of the second feature.

[0053] Embodiments of the present application are described in detail below with reference to the attached drawing figures, wherein the same or like component have the same or similar designations. The embodiments described below are presented by way of example only and are not intended to limit the present application as defined by the attached claims.

[0054] As shown in the drawings, the square steel pipe column base connecting node provided by the embodiment is used for connecting between a square steel pipe column 100 and a reinforced concrete foundation 200. The square steel pipe column base connecting node comprises a connecting assembly 300 and a column foot 110 of the square steel pipe column 100. Figures 1-12

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

[0056] In specific implementation, the connecting assembly 300 is first fixed to the reinforced concrete foundation 200, then the square steel pipe column 100 is hoisted so that the column foot 110 of the square steel pipe column 100 is sleeved outside the square protruding portion 400, and finally the connecting bolt 500 is installed to realize detachable connection between the square steel pipe column 100 and the connecting assembly 300. When it is needed to recycle the square steel pipe column 100, only the connecting bolt 500 needs to be disassembled to realize disassembly of the square steel pipe column 100.

[0057] The square steel pipe column base connecting node provided by the embodiment is advantageous for realizing quick centering of the column foot 110 by setting the square protruding portion 400 on the reinforced concrete foundation 200 and sleeving the column foot 110 of the square steel pipe column 100 outside the square protruding portion 400, and the central axes of the two are collinear, which reduces positioning error in the installation process and improves construction precision. Meanwhile, detachable fixing is realized by using the connecting bolt 500, which avoids construction complexity caused by welding or cast-in-place concrete method, enables the square steel pipe column 100 to be conveniently disassembled and assembled, and thus improves its recycling ability and meets the demand of green building. In addition, the connecting assembly 300 can be prefabricated in a factory and fixed to the reinforced concrete foundation 200, i.e., the complex stress structure of the column foot 110 is optimized to the prefabrication stage in the factory, which can ensure stable mechanical properties of the column foot 110 and fundamentally improve construction quality and reliability. Furthermore, on-site construction only needs to hoist the square steel pipe column 100 and complete installation through the connecting bolt 500, thereby effectively simplifying the on-site construction process and improving on-site assembly efficiency.

[0058] As shown in the drawings, the square steel pipe column base connecting node provided by the embodiment is used for connecting between a square steel pipe column 100 and a reinforced concrete foundation 200. The square steel pipe column base connecting node comprises a connecting assembly 300 and a column foot 110 of the square steel pipe column 100. Figures 1-6 ​As shown, in some embodiments, the connecting assembly 300 comprises a first assembly 1 and a second assembly 2.

[0059] The first assembly 1 comprises a first bottom plate 11 and a plurality of side plates 12 connected to each other, and a receiving space 10 with a top opening is formed between the plurality of side plates 12 and the first bottom plate 11. The outer surfaces of the first bottom plate 11 and the plurality of side plates 12 are fixedly installed on the reinforced concrete foundation 200. The second assembly 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 arranged on the second bottom plate 23, the top of the connecting square tube 21 penetrates through the top plate 22 and protrudes from the top plate 22, and the part of the connecting square tube 21 protruding from the top plate 22 is a square protruding portion 400. The second assembly 2 is partially arranged 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 pouring concrete to form a first concrete part 3, and the gap between the second assembly 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 arranged to penetrate through the column foot 110, the square protruding portion 400, and the first concrete part 3, so that the square steel tube column 100 can be detachably connected to the connecting square tube 21.

[0060] Through the combined design of the first assembly 1 and the second assembly 2, the connecting assembly 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 stress structure, which is beneficial to improve the durability and impact resistance of the connecting joint.

[0061] The part of the connecting square tube 21 protruding from the top plate 22 is a square protruding portion 400, and the height dimension of the square protruding portion 400 is determined by the stress calculation result and must ensure the connection strength with the square steel tube column 100.

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

[0063] Correspondingly, the embodiment also provides a construction method for the above-mentioned square steel tube column foot connecting joint, which comprises the following steps (corresponding Figures 7-11 ):

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

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

[0066] S3, pouring concrete into the inside of the connecting square tube 21 of the second assembly 2 to form the first concrete part 3, and pouring concrete into the gap between the second assembly 2 and the plurality of side plates 12 to form the 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 outside the square protruding part 400 of the connecting square tube 21;

[0068] S5, installing the connecting bolt 500, and making the connecting bolt 500 pass through the column foot 110, the square protruding part 400 and the first concrete part 3 to realize detachable connection of the square steel pipe column 100 and the connecting square tube 21.

[0069] That is, the first concrete pouring and curing is performed in step S1 to fix the first assembly 1 to the reinforced concrete foundation 200, and the second concrete pouring and curing is performed in step S3 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, only the connecting bolt 500 needs to be removed, and the square steel pipe column 100 can be disassembled (as shown in Figure 12 ).

[0071] The construction method of the square steel pipe column foot connecting node provided in the embodiment can be completed in the factory in steps S1-S3, and only steps S4 and S5 need to be performed in the field, so that the installation process of the square steel pipe column 100 is optimized, and the efficiency and construction quality of field assembly are effectively improved. The construction method uses the connecting bolt 500 for detachable fixing, so that the installation of the square steel pipe column 100 only needs to center and fix the connecting bolt 500, avoids the construction complexity caused by welding or cast-in-place concrete, enables the square steel pipe column 100 to be conveniently installed and disassembled, improves the construction efficiency, and meets the requirement of green building for component recycling.

[0072] As shown in Figure 2 and Figure 10 , in some embodiments, the first installation hole 5 is formed in each pipe wall at the column foot 110, the first installation holes 5 of the opposite two pipe walls of the column foot 110 are at the same height, the first installation holes 5 of the adjacent two pipe walls of the column foot 110 are at different heights, the second installation hole 6 is formed in each pipe wall at the square protruding part 400, the second installation hole 6 corresponds to the first installation hole 5 one by one, the installation channel 31 is reserved inside the first concrete part 3 at the square protruding part 400, and the installation channel 31 extends from one second installation hole 6 of the square protruding part 400 to another second installation hole 6 of the opposite pipe wall at the same height.

[0073] Specifically, the first installation hole 5 is formed in each pipe wall at the column foot 110, the second installation hole 6 is formed in each pipe wall at the square protruding part 400, and the installation channel 31 is reserved inside the first concrete part 3 at the square protruding part 400. Figure 10For example, one connecting bolt 500 can be inserted from the first mounting hole 5 on the left side of the column foot 110, 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, and then be extended out, so as to complete the installation and connection of the connecting bolt 500. The installation of the remaining connecting bolts 500 is the same.

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

[0075] By setting the first mounting hole 5, the second mounting hole 6 and the mounting channel 31, stable bolt connection can be achieved, and the setting of multiple connecting bolts 500 can increase the connection strength and effectively reduce the deformation risk caused by the stress concentration of a single connecting bolt 500.

[0076] As shown in Figure 3 and Figure 7 In some embodiments, the first assembly 1 further includes a pre-buried anchor bolt 13, the pre-buried anchor bolt 13 is connected to the first bottom plate 11, one end of the pre-buried anchor bolt 13 is configured to be fixed inside the reinforced concrete foundation 200, the other end of the pre-buried anchor bolt 13 protrudes from the first bottom plate 11 towards one side of the containing space 10, and the other end of the pre-buried anchor bolt 13 is used for the installation of the second assembly 2.

[0077] By setting the pre-buried anchor bolt 13, on the one hand, the connection strength between the first assembly 1 and the reinforced concrete foundation 200 can be enhanced, and on the other hand, the other end of the pre-buried anchor bolt 13 can be used for the bolt connection of the second assembly 2, which facilitates the subsequent installation and positioning of the second assembly 2.

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

[0079] As shown in 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 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 base anchor bars 14 can be set to multiple, with intervals between the multiple base anchor bars 14. For example, the number of base anchor bars 14 can be set to 4, 8, 12, etc., depending on the actual situation.

[0081] like Figure 3 and Figure 9 As shown, in some embodiments, a plurality of first studs 15 are fixed on both the inner and outer surfaces of each side plate 12. This arrangement allows the first studs 15 on the inner surface of the side plate 12 to improve the connection strength between the side plate 12 and the second concrete section 4, and the first studs 15 on the outer surface of the side plate 12 to improve the connection strength between the side plate 12 and the reinforced concrete foundation 200.

[0082] like Figures 4-6 As shown, in some embodiments, the second assembly 2 further includes a plurality of stiffening ribs 24, which are connected to the circumferential outer surface of the connecting square tube 21 and are spaced apart along the circumferential direction 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 setting multiple stiffening ribs 24, the overall structure of the second assembly 2 forms a stable force system, which helps to improve the overall rigidity of the connecting square tube 21, enhance the deformation resistance of the connecting square tube 21 under stress, and effectively ensure the reliability of the connection between the column base 110 and the square protrusion 400.

[0084] Optionally, multiple stiffening ribs 24 are evenly arranged along the circumference of the connecting square tube 21. This arrangement helps to make the second assembly 2 more evenly stressed.

[0085] like Figure 5 As shown, in some embodiments, a plurality of second studs 25 are fixed to the circumferential outer surface of the connecting square tube 21. The plurality of second studs 25 helps to enhance the connection strength between the connecting square tube 21 and the second concrete part 4.

[0086] Obviously, the above embodiments of the present application are merely exemplary but not intended to limit the embodiments of the present application. Various obvious changes, re-adjustments and substitutions can be made by those skilled in the art without departing from the scope of the present application. It is not necessary or possible to enumerate all the embodiments. Any modification, equivalent replacement and improvement made within the spirit and principle of the present application shall be included in the protection scope of the claims of the present application.

Claims

1. A square tubular column base connection joint, characterized by, The utility model relates to a connecting structure between a square steel pipe column (100) and a reinforced concrete foundation (200), which comprises a column foot connecting node of the square steel pipe column (100) and a connecting assembly (300). The connecting assembly (300) is fixedly connected to the reinforced concrete foundation (200), and comprises a square protruding part (400) protruding from the top surface of the reinforced concrete foundation (200). The column foot (110) is configured to be sleeved outside the square protruding part (400), and the central axis of the column foot (110) is collinear with the central axis of the square protruding part (400). The column foot (110) is configured to be detachably connected to the square protruding part (400) through a connecting bolt (500) and to be matched with the square protruding part (400) with a gap. The connecting assembly (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 containing space (10) with an open top is formed between the plurality of side plates (12) and the first bottom plate (11). The outer surface of the first bottom plate (11) and the outer surface of the plurality of side plates (12) are fixedly installed 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 arranged on the second bottom plate (23). The top of the connecting square tube (21) penetrates through the top plate (22) and protrudes from the top plate (22). The part of the connecting square tube (21) protruding from the top plate (22) is the square protruding part (400). The second assembly part (2) is partially arranged in the containing space (10), and the second bottom plate (23) is connected to the first bottom plate (11). The inside of the connecting square tube (21) is used for pouring concrete to form a first concrete part (3). 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) penetrates through the column foot (110), the square protruding part (400), and the first concrete part (3), so that the square steel pipe column (100) is detachably connected to the connecting square tube (21). Each pipe wall at the column foot (110) is provided with a first mounting hole (5), the first mounting holes (5) of the opposite two pipe walls of the column foot (110) are at the same height, the first mounting holes (5) of the adjacent two pipe walls of the column foot (110) are at different heights, each pipe wall at the square protruding part (400) is provided with a second mounting hole (6), the second mounting hole (6) corresponds to the first mounting hole (5) one by one, the first concrete part (3) at the square protruding part (400) is reserved with a through installation channel (31), the installation channel (31) extends from one second mounting hole (6) of the square protruding part (400) to another second mounting hole (6) of the opposite pipe wall at the same height.

2. The square steel pipe column foot connecting joint according to claim 1, characterized in that, The first assembly part (1) further comprises a pre-buried anchor bolt (13), the pre-buried anchor bolt (13) is connected to the first bottom plate (11), one end of the pre-buried anchor bolt (13) is configured to be fixed inside the reinforced concrete foundation (200), the other end of the pre-buried anchor bolt (13) protrudes from the first bottom plate (11) towards one side of the containing space (10), and the other end of the pre-buried anchor bolt (13) is used for mounting the second assembly part (2).

3. The square steel pipe column foot connecting joint according to claim 2, characterized in that, The bottom outer surface of the first bottom plate (11) is fixed with a base anchor bar (14), and the base anchor bar (14) is configured to be fixed inside the reinforced concrete foundation (200).

4. The square steel pipe column foot connecting joint according to claim 3, characterized in that, The inner surface and the outer surface of each side plate (12) are fixed with a plurality of first studs (15).

5. The square steel pipe column foot connecting joint according to any one of claims 1-4, characterized in that, The second assembly part (2) further comprises 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).

6. The square steel pipe column foot connecting joint according to claim 5, characterized in that, The circumferential outer surface of the connecting square tube (21) is fixed with a plurality of second studs (25).

7. The square steel pipe column foot connecting joint according to claim 5, characterized in that, The plurality of stiffening ribs (24) are uniformly arranged along the circumference of the connecting square tube (21).

8. A construction method for the square tubular column base connection joint according to any one of claims 1 to 7, characterized in that, Comprising: S1, pouring the first assembly part (1) into the reinforced concrete foundation (200) to fix the outer surface of the first bottom plate (11) and the outer surfaces of the plurality of side plates (12) to the reinforced concrete foundation (200); S2, the second assembly (2) is placed in the containing space (10) of the first assembly (1), and the second bottom plate (23) of the second assembly (2) is connected to the first bottom plate (11); S3, pouring concrete into the connecting square tube (21) of the second assembly (2) to form the first concrete part (3), and pouring concrete into the gap between the second assembly (2) and the plurality of side plates (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 sleeved on the outside of the square protruding part (400) of the connecting square tube (21); S5, installing the connecting bolt (500), making the connecting bolt (500) pass through the column foot (110), the square protruding part (400) and the first concrete part (3), so as to realize the detachable connection between the square steel pipe column (100) and the connecting square tube (21).

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