Steel pipe column foot connecting device and construction method

Abstract

The invention belongs to the technical field of building construction, and discloses a steel pipe column foot connecting device and a construction method. The steel pipe column foot connecting device comprises a concrete foundation, a fixing assembly, a supporting assembly and a guiding assembly. According to the steel pipe column foot connecting device, the fixing assembly is connected with the concrete foundation, and stability is improved. The supporting piece is used for supporting the steel pipe column foot, the adjusting piece adjusts the levelness of the supporting piece, the steel pipe column foot is kept perpendicular, and the structural stability and safety of a building are improved. The guiding assembly comprises limiting pieces, the multiple limiting pieces define circular spaces, the diameter of the upper circular space is not smaller than that of the lower circular space, and the steel pipe column foot can be conveniently inserted into the supporting piece. According to the construction method of the steel pipe column foot connecting device, a positioning frame does not need to be arranged, the perpendicularity of the steel pipe can be guaranteed only by inserting the steel pipe into the steel pipe column foot, operation is easy, the labor intensity of workers can be relieved, and the construction efficiency can be improved.

Description

Technical Field

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

[0002] As construction projects are developing rapidly towards high-rise, large-span and multifunctional, steel pipe columns play an important role in both super-high-rise building structures and large-span building structures such as large industrial plants, bridges and stadiums, as they have a large cross-sectional inertia moment and can effectively withstand large axial pressure and bending moment. The installation quality of steel pipe columns is directly related to the safety and reliability of buildings, especially the installation of steel pipe column bases, which needs to ensure their firmness and verticality.

[0003] In the prior art, the installation of the steel pipe column foot usually adopts the method of positioning frame. Workers first install the bolts on the positioning frame in advance, and then weld and install them on the steel cage of the base. After pouring concrete, the steel pipe column foot is installed on the bolts and tightened, and grouting is poured at the bottom of the steel pipe column. However, this installation method completely relies on manual operation, with high labor intensity, long labor cycle and low construction efficiency. In addition, the installation accuracy is difficult to control, and there will be a large deviation in the verticality of the steel pipe column foot, which will affect the structural stability and safety of the entire building. Summary of the invention

[0004] The purpose of the present invention is to provide a steel pipe column foot connection device and a construction method, which can reduce the labor intensity of workers, improve the verticality of steel pipes, and improve construction efficiency.

[0005] To achieve this object, the present invention adopts the following technical solutions:

[0006] A steel pipe column foot connection device, comprising:

[0007] a concrete foundation having a groove with an upwardly directed notch;

[0008] A fixing assembly, fixedly connected to the bottom of the groove, the fixing assembly having a first accommodation space with an opening facing upward;

[0009] A support assembly is arranged in the first accommodation space, the support assembly includes a support member and a plurality of adjustment members, the support member has a second accommodation space with an opening facing upward and arranged around a first axis, for accommodating a steel pipe column foot, a plurality of the adjustment members are arranged at intervals around the first axis, one end of the adjustment member is fixedly connected to a concrete foundation, and the other end is passed through the support member, and a first nut is detachably arranged on both upper and lower sides of the support member to adjust the horizontality of the support member;

[0010] The guide assembly includes multiple annular fixings and multiple vertical support rods. The multiple annular fixings are arranged at intervals in the vertical direction. The multiple vertical support rods are passed through the annular fixings. Multiple limit members are radially slidably arranged on the annular fixings. The multiple limit members on the same annular fixing form a circular space arranged around the first axis. In every two adjacent circular spaces, the diameter of the circular space located above is not less than the diameter of the circular space located below, and the smallest diameter of the circular space is equal to the outer diameter of the column foot of the steel pipe column.

[0011] The above-mentioned steel pipe column base connection device, wherein the support member includes a support portion and a connection portion arranged at the bottom end of the support portion, the outer diameter of the connection portion is larger than the outer diameter of the support portion and is connected to the adjustment member, and the support portion and the connection portion enclose the second cylindrical accommodating space.

[0012] The above-mentioned steel pipe column base connection device, wherein the connection part is provided with a plurality of mounting holes at intervals along the circumferential direction, the mounting holes are used to pass the adjustment member, and a first nut is respectively provided on the upper and lower sides of the connection part.

[0013] The above-mentioned steel pipe column base connection device, wherein a plurality of reinforcing ribs are arranged between the support portion and the connection portion, and the plurality of reinforcing ribs are arranged on the outer side of the support portion and are arranged at intervals along the circumference of the connection portion.

[0014] The above-mentioned steel pipe column base connection device, wherein the vertical support rod is a connecting screw rod, and multiple vertical support rods are arranged at intervals around the first axis, and each of the annular fixing members is provided with a second nut on the upper and lower sides, and the second nut is threadedly connected to the vertical support rod to fix the annular fixing member.

[0015] The above-mentioned steel pipe column base connection device, wherein the annular fixing member is provided with a plurality of elongated holes spaced around the first axis, the elongated holes extend along the radial direction of the annular fixing member, the limiting member is passed through the elongated holes and can slide along the elongated holes, and the limiting member is provided with a third nut to fix the limiting member.

[0016] The above-mentioned steel pipe column base connection device, wherein the fixing assembly includes a base plate and a plurality of baffles, the base plate is arranged at the bottom of the groove, and the plurality of baffles are fixedly connected to the upper side of the base plate and enclose the first accommodating space with the base plate.

[0017] The above-mentioned steel pipe column base connection device, wherein the fixing assembly also includes a plurality of first reinforcing ribs extending along a first direction and a second reinforcing ribs extending along a second direction, the plurality of first reinforcing ribs are arranged at intervals along the second direction and pass through the baffle, and the plurality of second reinforcing ribs are arranged at intervals along the first direction and pass through the baffle.

[0018] The above-mentioned steel pipe column base connecting device, wherein the bottom end of the steel pipe column base is fixedly connected with a connecting rod, and an L-shaped clamping block is arranged on the support member in the second accommodating space, and the steel pipe column base can be rotated in the second accommodating space so that the connecting rod can be clamped in the L-shaped clamping block.

[0019] A construction method of a steel pipe column foot connection device, using the steel pipe column foot connection device as described above, comprising:

[0020] S1: pouring a concrete foundation and forming a groove, embedding an adjustment part when pouring the concrete foundation, placing a fixing assembly at the bottom of the groove, passing a vertical support rod through the fixing assembly and fixing it to the concrete foundation, and pouring concrete in an area from the outside of the first accommodation space to the side wall of the groove to form a first pouring layer;

[0021] S2: placing the support member in the first accommodation space, passing through the adjusting member and adjusting the horizontality of the support member through the first nut, and pouring the area inside the first accommodation space and outside the second accommodation space with concrete to form a second pouring layer;

[0022] S3: Pass multiple annular fixing members through the vertical support rods in sequence and fix them, adjust the limiter so that the diameter of the upper circular space is not less than the diameter of the lower circular space, pass the steel pipe column foot through the multiple circular spaces and install it inside the second accommodation space, cast the area from the outer wall of the steel pipe column foot to the inner wall of the groove with concrete to form a third casting layer, and cast the area inside the steel pipe column foot with concrete to form a fourth casting layer;

[0023] S4: Finish the third and fourth pouring layers and cover them with film for moisture-retaining maintenance for no less than 7 days.

[0024] Beneficial effects of the present invention:

[0025] The steel pipe column base connection device provided by the present invention is connected to a fixed assembly and a concrete foundation, which increases the bottom area and weight of the steel pipe column base and improves stability. The support member is used to support the steel pipe column base, and the adjustment member can adjust the horizontality of the support member so that the steel pipe column base remains vertical, thereby improving the structural stability and safety of the building. The guide assembly includes a limit member, and multiple limit members on the same annular fixing member form a circular space arranged around a first axis. In each of two adjacent circular spaces, the diameter of the upper circular space is not less than the diameter of the lower circular space, and the diameter of the smallest circular space is equal to the outer diameter of the steel pipe column base. The multiple circular spaces play a guiding role, which facilitates the insertion of the steel pipe column base into the support member.

[0026] The construction method of the steel pipe column base connection device provided by the present invention fixes the connection between the fixing assembly, the supporting assembly, the guiding assembly and the concrete foundation by a casting method, and there is no need to set up a positioning frame. The verticality of the steel pipe can be ensured by only inserting the steel pipe into the steel pipe column base. The operation is simple, the labor intensity of workers can be reduced, and the construction efficiency is improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 It is a structural schematic diagram of a steel pipe column foot connection device provided in an embodiment of the present invention;

[0028] Figure 2 is a first cross-sectional view of a steel pipe column foot connection device provided by an embodiment of the present invention;

[0029] Figure 3 is a second cross-sectional view of the steel pipe column foot connection device provided by an embodiment of the present invention;

[0030] Figure 4 is a cross-sectional view of the cooperation of the fixing assembly, the supporting assembly and the guiding assembly provided by an embodiment of the present invention;

[0031] Figure 5 is a schematic diagram of the structure of a fixing assembly provided by an embodiment of the present invention;

[0032] Figure 6 is an exploded view of a support assembly provided by an embodiment of the present invention;

[0033] Figure 7 It is a schematic diagram of the structure of the guide assembly provided in an embodiment of the present invention.

[0034] In the figure:

[0035] 1. Concrete foundation; 11. Groove;

[0036] 2. Fixing assembly; 21. First accommodating space; 22. Bottom plate; 23. Baffle plate; 24. First reinforcing rib; 25. Second reinforcing rib;

[0037] 3. Support assembly; 31. Support member; 311. Second accommodating space; 312. Support portion; 313. Connecting portion; 314. Mounting hole; 315. Reinforcement rib; 32. Adjustment member; 33. First nut; 34. L-shaped block;

[0038] 4. Guide assembly; 41. Annular fixing member; 411. Long strip hole; 42. Vertical support rod; 43. Limiting member; 44. Second nut; 45. Third nut;

[0039] 5. Steel pipe column foot; 51. Connecting rod;

[0040] 100. The first pouring layer;

[0041] 200, second pouring layer;

[0042] 300, the third pouring layer;

[0043] 400. The fourth pouring layer. DETAILED DESCRIPTION

[0044] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar parts or parts having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the present invention, and should not be construed as limiting the present invention.

[0045] In the description of the present invention, unless otherwise clearly specified and limited, the terms "connected", "connected", and "fixed" should be understood in a broad sense, for example, it can be a fixed connection or a detachable connection, it can be a mechanical connection or an electrical connection, it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0046] In the description of the present invention, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may include the first feature being in direct contact with the second feature, or may include the first feature being in contact with the second feature through another feature between them instead of being in direct contact. Moreover, a first feature being "above", "above" and "above" a second feature includes the first feature being 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 the first feature being directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0047] The technical solution of the present invention is further described below with reference to the accompanying drawings and through specific implementation methods.

[0048] like Figures 1 to 7As shown, the steel pipe column foot connection device provided by the present invention includes a concrete foundation 1, a fixing assembly 2, a supporting assembly 3 and a guiding assembly 4. The concrete foundation 1 has a groove 11 with a notch facing upward; the fixing assembly 2 is fixedly connected to the bottom of the groove 11, and the fixing assembly 2 has a first accommodating space 21 with an opening facing upward; the supporting assembly 3 is in the first accommodating space 21, and the supporting assembly 3 includes a supporting member 31 and a plurality of adjusting members 32, the supporting member 31 has a second accommodating space 311 with an opening facing upward and arranged around a first axis, which is used to accommodate the steel pipe column foot 5, and the plurality of adjusting members 32 are arranged at intervals around the first axis, one end of the adjusting member 32 is fixedly connected to the concrete foundation 1, and the other end is passed through the supporting member 31, and the adjusting member 32 is detachably provided on both the upper and lower sides of the supporting member 31. A first nut 33 is provided to adjust the horizontality of the support member 31; the guide assembly 4 includes a plurality of annular fixing members 41 and a plurality of vertical support rods 42, the plurality of annular fixing members 41 are arranged at intervals along the vertical direction, the plurality of vertical support rods 42 are passed through the annular fixing members 41, a plurality of limit members 43 are radially slidably provided on the annular fixing members 41, the plurality of limit members 43 on the same annular fixing member 41 form a circular space arranged around the first axis, and in every two adjacent circular spaces, the diameter of the upper circular space is not less than the diameter of the lower circular space, and the diameter of the smallest circular space is equal to the outer diameter of the steel pipe column base 5.

[0049] The steel pipe column base connection device provided by the present invention connects the fixing assembly 2 to the concrete foundation 1, thereby increasing the bottom area and weight of the steel pipe column base 5 and improving stability. The support member 31 is used to support the steel pipe column base 5, and the adjustment member 32 can adjust the horizontality of the support member 31 so that the steel pipe column base 5 remains vertical, thereby improving the structural stability and safety of the building. The multiple limit members 43 on the same annular fixing member 41 form a circular space arranged around the first axis, and in each adjacent two circular spaces, the diameter of the circular space located above is not less than the diameter of the circular space located below, and the diameter of the smallest circular space is equal to the outer diameter of the steel pipe column base 5. It is convenient to insert the steel pipe column base 5 into the support member 31.

[0050] The concrete foundation 1 can be formed by casting or cutting. In this embodiment, the concrete foundation 1 is cast, and the formed concrete foundation 1 has a groove 11 with an opening facing upward, which is convenient for placing the fixing component 2, the supporting component 3 and the guiding component 4, and then pouring grout to fix them together, thereby increasing the bottom area and weight and improving stability. The cross section of the groove 11 can be rectangular or circular. Optionally, the cross section of the groove 11 is rectangular, which is convenient for processing and forming.

[0051] The fixing component 2 is used to fix the supporting component 3, see Figure 2 , Figure 4 and Figure 5The fixing assembly 2 includes a bottom plate 22 and a plurality of baffles 23. The bottom plate 22 is disposed at the bottom of the groove 11. The plurality of baffles 23 are fixedly connected to the upper side of the bottom plate 22 and enclose a first accommodation space 21 with the bottom plate 22. The bottom plate 22 and the baffles 23 are easy to process and manufacture.

[0052] The first accommodating space 21 may be in a rectangular parallelepiped shape or in a cylindrical shape. Optionally, the first accommodating space 21 may be in a rectangular parallelepiped shape for easy processing.

[0053] The bottom plate 22 can be a rectangular plate or an arc-shaped plate. The present embodiment does not specifically limit the shape of the bottom plate 22. Optionally, the bottom plate 22 uses an existing high-strength, corrosion-resistant alloy steel plate, such as Q345B or above, and the surface is treated with an anti-corrosion coating, such as hot-dip galvanizing or epoxy zinc-rich primer plus polyurethane topcoat composite coating. The alloy steel plate has high strength, and the surface is treated with an anti-corrosion coating, which can improve the corrosion resistance of the bottom plate 22 and increase the service life of the bottom plate 22.

[0054] The baffle 23 can be connected to the bottom plate 22 by bolts or by welding. In this embodiment, the baffle 23 is welded to the bottom plate 22, which is easy to operate and firmly connected. Specifically, the baffle 23 is a rectangular plate, four baffles 23 are vertically connected to the bottom plate 22, and the four baffles 23 and the bottom plate 22 enclose the first accommodating space 21.

[0055] Two adjacent baffles 23 can be fixed by welding or by bolts. Exemplarily, the fixing assembly 2 also includes a fastener, which fixes two adjacent baffles 23 together and makes the two baffles 23 perpendicular to each other. Specifically, the fastener can be an existing angle steel or channel steel, the fastener has a 90° opening, the fastener is clamped on the outer sides of the two baffles 23 that are perpendicular to each other, and the fastener and the baffle 23 are fixed with existing screws.

[0056] In other embodiments, the fixing assembly 2 includes a bottom plate 22 and a fixing plate, and the bottom plate 22 is fixedly connected to the fixing plate, and can be fixed by welding. The fixing plate is a circular plate, and the fixing plate and the bottom plate 22 enclose a first accommodation space 21.

[0057] In order to improve the strength of the fixing assembly 2 and the concrete foundation 1 after fixing, the fixing assembly 2 further includes a plurality of first reinforcing ribs 24 extending along the first direction and a second reinforcing rib 25 extending along the second direction. The plurality of first reinforcing ribs 24 are arranged at intervals along the second direction and penetrate the baffle 23. The plurality of second reinforcing ribs 25 are arranged at intervals along the first direction and penetrate the baffle 23. Figure 5 The X direction is shown in the middle, and the second direction is as Figure 5 The first reinforcing ribs 24 and the second reinforcing ribs 25 are arranged in a crisscross pattern, which can improve the connection strength between the fixing assembly 2 and the concrete foundation 1 after pouring.

[0058] It should be noted that a plurality of through holes are provided at intervals along the first direction or the second direction on the baffle plate 23 for passing the first reinforcing rib 24 or the second reinforcing rib 25. The first reinforcing rib 24 and the second reinforcing rib 25 can be made of existing steel bars for easy acquisition. The first reinforcing rib 24 and the second reinforcing rib 25 are not directly connected to the bottom plate 22, but are fixed to the bottom plate 22 after casting.

[0059] The support member 31 is used to support the steel pipe column foot 5, see Figure 6 In this embodiment, the support member 31 includes a support portion 312 and a connecting portion 313 disposed at the bottom end of the support portion 312. The outer diameter of the connecting portion 313 is greater than the outer diameter of the support portion 312 and is connected to the adjusting member 32. The support portion 312 and the connecting portion 313 are arranged to form a cylindrical second accommodation space 311. The outer diameter of the connecting portion 313 is greater than the outer diameter of the support portion 312, so that it is convenient to connect with the adjusting member 32 to adjust the horizontality of the support member 31, thereby ensuring the verticality of the steel pipe column foot 5.

[0060] The support part 312 and the connection part 313 can be integrally formed or fixed by welding. For example, the support part 312 and the connection part 313 are fixed by welding, which is simple to operate and firmly connected. The support part 312 is a hollow circular tube, whose inner diameter is equal to the outer diameter of the steel pipe column foot 5, and the connection part 313 is a circular plate. The support part 312 is vertically welded to the center position of the connection part 313, which is convenient for adjusting the horizontality of the support part 312.

[0061] The second accommodating space 311 is used to place the steel pipe column base 5, so its shape should be designed according to the shape of the steel pipe column base 5. In this embodiment, the steel pipe column base 5 is cylindrical, so the second accommodating space 311 is cylindrical.

[0062] In other embodiments, the steel pipe column base 5 is in the shape of a rectangular parallelepiped, and the second accommodation space 311 may be in the shape of a rectangular parallelepiped.

[0063] In order to ensure that the steel pipe column foot 5 is stably installed in the second accommodation space 311, see Figure 6 In this embodiment, the bottom end of the steel pipe column base 5 is fixedly connected with a connecting rod 51, and an L-shaped block 34 is provided on the support member 31 in the second accommodating space 311. The steel pipe column base 5 can rotate in the second accommodating space 311 so that the connecting rod 51 can be clamped in the L-shaped block 34.

[0064] The connecting rod 51 can be welded to the bottom end of the steel pipe column foot 5 and extend in the radial direction of the steel pipe column foot 5. The L-shaped block 34 is fixedly connected to the support block and can be fixed by welding, which is easy to operate. Optionally, two L-shaped blocks 34 are provided, and the two L-shaped blocks 34 are distributed 180° apart around the first axis to ensure that when the steel pipe column foot 5 is rotated, the connecting rod 51 is simultaneously screwed into the openings of the two L-shaped blocks 34, so that the steel pipe column foot 5 is fixed to the support member 31.

[0065] In order to connect the adjusting member 32 and the supporting member 31, in this embodiment, the connecting portion 313 is provided with a plurality of mounting holes 314 at intervals along the circumferential direction, and the mounting holes 314 are used to pass the adjusting member 32, and a first nut 33 is provided on each of the upper and lower sides of the connecting portion 313. When the first nuts 33 on the upper and lower sides of the connecting portion 313 are close to each other, the adjusting member 32 and the supporting member 31 can be fixed, and the first nut 33 located at the lower side of the connecting portion 313 can be rotated to adjust the horizontality of the supporting member 31.

[0066] The shape of the adjusting member 32 is designed according to needs. Optionally, the adjusting member 32 is an L-shaped circular tube, and an external thread is provided at the top thereof to facilitate threaded connection with the first nut 33. The bottom end is perpendicular to the top end, and the bottom end is fixed to the concrete foundation 1, which can improve the stability of the adjusting member 32 after fixation.

[0067] The diameter of the mounting hole 314 is larger than the outer diameter of the adjusting member 32, so that the adjusting member 32 can be inserted into the mounting hole 314, and the number of mounting holes 314 can be designed according to the requirements. For example, four mounting holes 314 are arranged along the circumference of the connecting portion 313, and the four mounting holes 314 are distributed at the edge of the connecting portion 313 at intervals of 90° around the first axis. The four mounting holes 314 are distributed at four positions of the front, back, left and right of the connecting portion 313, and the four adjusting members 32 are inserted into the four mounting holes 314. By rotating the first nut 33 on the adjusting member 32 located in front of the connecting portion 313, the front end of the connecting portion 313 can be tilted upward or downward. The existing level meter can be used to detect the horizontality of the connecting portion 313, and the first nuts 33 on the four adjusting members 32 can be adjusted comprehensively to make the support member 31 in a horizontal state.

[0068] In this embodiment, a plurality of reinforcing ribs 315 are provided between the support portion 312 and the connection portion 313. The plurality of reinforcing ribs 315 are provided on the outside of the support portion 312 and are spaced apart along the circumference of the connection portion 313. The reinforcing ribs 315 can improve the connection strength between the support portion 312 and the connection portion 313. The reinforcing ribs 315 are in the shape of a right triangle, and two mutually perpendicular surfaces thereof are respectively fixed to the side surface of the support portion 312 and the top surface of the connection portion 313, and can be fixed by welding.

[0069] The guide assembly 4 is used to guide the steel pipe column foot 5, and to center the steel pipe column foot 5 during the process of inserting the steel pipe column foot 5 into the second accommodation space 311. The vertical support rod 42 is used to connect the plurality of annular fixing members 41, and the vertical support rod 42 can be all screw rods or at least part of them. Figure 7 For example, the vertical support rod 42 is a connecting screw rod, and a plurality of vertical support rods 42 are arranged at intervals around the first axis. A second nut 44 is provided on the upper and lower sides of each annular fixing member 41, and the second nut 44 is threadedly connected to the vertical support rod 42 to fix the annular fixing member 41. The screw rod and the second nut 44 are detachably connected, so as to facilitate adjustment of the distance between two adjacent annular fixing members 41.

[0070] Two adjacent annular fixing members 41 may share the same vertical support rod 42, or all annular fixing members 41 may be inserted through the same vertical support rod 42. In this embodiment, a plurality of vertical support rods 42 are arranged at intervals around the first axis, and are convenient to connect. Specifically, the guide assembly 4 includes six vertical support rods 42, and the vertical support rods 42 are arranged at intervals of 60° around the first axis, which can evenly distribute the weight of the annular fixing members 41 and improve the service life of the guide assembly 4.

[0071] The annular fixing member 41 may be an annular plate, which occupies a small space and has a low weight. The diameter of the central hole of the annular fixing member 41 is larger than the outer diameter of the steel pipe column foot 5, so that the steel pipe column foot 5 can extend into the second accommodation space 311. The distance between two adjacent annular fixing members 41 can be adjusted according to design requirements, and this embodiment does not specifically limit the distance between two adjacent annular fixing members 41.

[0072] The circular space formed by the multiple limiting members 43 on the same annular fixing member 41 around the first axis has a guiding effect on the steel pipe column foot 5. In this embodiment, the annular fixing member 41 is provided with multiple elongated holes 411 at intervals around the first axis, and the elongated holes 411 extend along the radial direction of the annular fixing member 41. The limiting members 43 are penetrated through the elongated holes 411 and can slide along the elongated holes 411. The limiting members 43 are provided with third nuts 45 to fix the limiting members 43. The limiting members 43 slide along the elongated holes 411 to adjust the size of the circular space. The limiting members 43 are provided with two third nuts 45, which are respectively located on the upper and lower sides of the annular fixing member 41. After the two third nuts 45 are tightened, the annular fixing member 41 and the limiting members 43 can be clamped.

[0073] Specifically, the limit member 43 is an L-shaped rod, which includes a threaded portion and a limit portion. The threaded portion has an external thread for threading the third nut 45, and the threaded portion is passed through the long hole 411. The limit portion extends along the radial direction of the annular fixing member 41, and one end of the multiple limit portions forms a circular space, which has a guiding effect on the steel pipe column base 5 to prevent the steel pipe column base 5 from being offset.

[0074] When in use, loosen the third nut 45, adjust the limiter 43 along the radial direction of the annular fixing member 41 to form a circular space, and adjust the multiple limiters 43 on each annular fixing member 41 in turn, so that the diameter of the circular space located at the top is smaller than the diameter of the circular space located at the bottom, that is, an inverted cone-shaped guide space is formed from top to bottom, and the guide space can guide the steel pipe column foot 5 to extend into the second accommodating space 311, and can automatically center the steel pipe column foot 5 to improve the verticality of the steel pipe column foot 5. In this embodiment, the diameter of one or two circular spaces located at the bottom is equal to the outer diameter of the steel pipe column foot 5, which can limit the steel pipe column foot 5 and reduce installation errors.

[0075] See also Figures 1 to 7 The present invention also provides a construction method for a steel pipe column base connection device, which adopts the above-mentioned steel pipe column base connection device, including: S1: pouring a concrete foundation 1 and forming a groove 11, pre-embedding an adjusting member 32 when pouring the concrete foundation 1, placing a fixing component 2 at the bottom of the groove 11, passing a vertical support rod 42 through the fixing component 2 and fixing it to the concrete foundation 1, pouring concrete in the area between the outside of the first accommodating space 21 and the side wall of the groove 11 to form a first pouring layer 100; S2: placing a supporting member 31 in the first accommodating space 21, passing through the adjusting member 32 and adjusting the horizontality of the supporting member 31 through the first nut 33, pouring concrete in the first accommodating space 21 and the first accommodating space 21. The area outside the second accommodating space 311 is used to form a second casting layer 200; S3: multiple annular fixing parts 41 are sequentially passed through the vertical support rod 42 and fixed, and the limit parts 43 are adjusted so that the diameter of the upper circular space is not less than the diameter of the lower circular space. The steel pipe column foot 5 passes through the multiple circular spaces and is installed in the interior of the second accommodating space 311, and the area from the outer wall of the steel pipe column foot 5 to the inner wall of the groove 11 is cast with concrete to form a third casting layer 300, and the area inside the steel pipe column foot 5 is cast with concrete to form a fourth casting layer 400; S4: The third casting layer 300 and the fourth casting layer 400 are subjected to finishing treatment, and covered with a film for moisturizing maintenance, and the maintenance time is not less than 7 days.

[0076] The construction method of the steel pipe column base connection device provided by the present invention fixes the connection between the fixing component 2, the supporting component 3, the guiding component 4 and the concrete foundation 1 by casting, and there is no need to set up a positioning frame. The verticality of the steel pipe can be ensured by only inserting the steel pipe into the steel pipe column base 5. The operation is simple, the labor intensity of workers can be reduced, and the construction efficiency can be improved.

[0077] Before step S1, a through hole of a corresponding size is processed at a corresponding position on the bottom plate 22 to pass the adjusting member 32 and the vertical support rod 42. When pouring concrete, the pre-embedded adjusting member 32 ensures that the adjusting member 32 extends vertically upward, and then the bottom plate 22 is passed through the adjusting member 32 and placed at the bottom of the groove 11. When the concrete foundation 1 is not solidified, the vertical support rod 42 is inserted into the concrete foundation 1 from the through hole of the bottom plate 22. Before pouring the first pouring layer 100, the groove 11 of the concrete foundation 1 is cleaned to remove debris and dust, and moistened with water, but without water accumulation.

[0078] In step S2 , the first casting layer 100 , the second casting layer 200 and the first accommodating space 21 formed by casting are of equal height, which is convenient for placing the guide assembly 4 .

[0079] In step S3, when the solidification strength of the first pouring layer 100 reaches more than 75% of the design strength, the annular fixing member 41 is installed. During installation, one annular fixing member 41 is installed at a time, and the second nut 44 is tightened so that the annular fixing member 41 is fixed to the vertical support rod 42. At the same time, the position of the stopper 43 is adjusted so that the diameter of the circular space surrounded by it meets the design requirements.

[0080] In step S4, a plastic film may be used for moisture preservation, such as polyethylene plastic film, which is widely available, easy to obtain, and low in cost. The curing time is not less than 7 days, so that the strength of the steel pipe column foot connection device can increase normally after pouring.

[0081] The grouting materials of the first pouring layer 100 , the second pouring layer 200 , the third pouring layer 300 and the fourth pouring layer 400 are all selected from existing high-strength, slightly-expanding, self-leveling grouting materials, such as CGM high-strength non-shrinkage grouting material.

[0082] 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, other different forms of changes or modifications can be made based on the above description. 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. A steel pipe column foot connection device, characterized in that: include: A concrete foundation (1), wherein the concrete foundation (1) has a groove (11) with the notch facing upward; A fixing component (2) fixedly connected to the bottom of the groove (11), the fixing component (2) having a first accommodating space (21) with an opening facing upward; A support assembly (3) is arranged in the first accommodating space (21), the support assembly (3) comprises a support member (31) and a plurality of adjusting members (32), the support member (31) having a second accommodating space (311) with an opening facing upward and arranged around a first axis, for accommodating a steel pipe column foot (5), a plurality of adjusting members (32) being arranged at intervals around the first axis, one end of the adjusting member (32) being fixedly connected to the concrete foundation (1), and the other end being passed through the support member (31), and a first nut (33) being detachably arranged on both upper and lower sides of the support member (31) to adjust the horizontality of the support member (31); The guide assembly (4) comprises a plurality of annular fixing members (41) and a plurality of vertical support rods (42), wherein the plurality of annular fixing members (41) are arranged at intervals in the vertical direction, and the plurality of vertical support rods (42) are passed through the annular fixing members (41), and a plurality of limit members (43) are radially slidably arranged on the annular fixing members (41), and the plurality of limit members (43) on the same annular fixing member (41) form a circular space arranged around the first axis, and in each adjacent two circular spaces, the diameter of the circular space located above is not less than the diameter of the circular space located below, and the diameter of the smallest circular space is equal to the outer diameter of the steel pipe column foot (5).

2. The steel pipe column foot connection device according to claim 1, characterized in that: The support member (31) comprises a support portion (312) and a connecting portion (313) arranged at the bottom end of the support portion (312); the connecting portion (313) has an outer diameter greater than an outer diameter of the support portion (312) and is connected to the adjusting member (32); the support portion (312) and the connecting portion (313) are arranged to form the second cylindrical accommodation space (311).

3. The steel pipe column foot connection device according to claim 2, characterized in that: The connecting portion (313) is provided with a plurality of mounting holes (314) at intervals along the circumferential direction, the mounting holes (314) being used to pass the adjusting member (32), and one first nut (33) is respectively provided on the upper and lower sides of the connecting portion (313).

4. The steel pipe column foot connection device according to claim 2, characterized in that: A plurality of reinforcing ribs (315) are arranged between the supporting portion (312) and the connecting portion (313); the plurality of reinforcing ribs (315) are arranged on the outer side of the supporting portion (312) and are arranged at intervals along the circumference of the connecting portion (313).

5. The steel pipe column foot connection device according to claim 1, characterized in that: The vertical support rod (42) is a connecting screw rod, and a plurality of the vertical support rods (42) are arranged at intervals around the first axis. A second nut (44) is provided on the upper and lower sides of each annular fixing member (41), and the second nut (44) is threadedly connected to the vertical support rod (42) to fix the annular fixing member (41).

6. The steel pipe column foot connection device according to claim 1, characterized in that: The annular fixing member (41) is provided with a plurality of elongated holes (411) at intervals around the first axis, the elongated holes (411) extending in the radial direction of the annular fixing member (41), the limiting member (43) is passed through the elongated holes (411) and can slide along the elongated holes (411), and the limiting member (43) is provided with a third nut (45) for fixing the limiting member (43).

7. The steel pipe column foot connection device according to claim 1, characterized in that: The fixing assembly (2) comprises a bottom plate (22) and a plurality of baffles (23); the bottom plate (22) is arranged at the bottom of the groove (11); the plurality of baffles (23) are fixedly connected to the upper side of the bottom plate (22) and enclose the first accommodating space (21) together with the bottom plate (22).

8. The steel pipe column foot connection device according to claim 7, characterized in that: The fixing assembly (2) further comprises a plurality of first reinforcing ribs (24) extending along a first direction and a plurality of second reinforcing ribs (25) extending along a second direction, wherein the plurality of first reinforcing ribs (24) are arranged at intervals along the second direction and penetrate the baffle (23), and the plurality of second reinforcing ribs (25) are arranged at intervals along the first direction and penetrate the baffle (23).

9. The steel pipe column foot connection device according to any one of claims 1 to 8, characterized in that: The bottom end of the steel pipe column foot (5) is fixedly connected to a connecting rod (51); an L-shaped clamping block (34) is provided on the support member (31) in the second accommodating space (311); the steel pipe column foot (5) can be rotated in the second accommodating space (311) so that the connecting rod (51) is clamped in the L-shaped clamping block (34).

10. A construction method for a steel pipe column foot connection device, characterized in that: The steel pipe column foot connection device according to any one of claims 1 to 9 comprises: S1: pouring a concrete foundation (1) to form a groove (11), pre-embedding an adjustment member (32) when pouring the concrete foundation (1), placing a fixing assembly (2) at the bottom of the groove (11), passing a vertical support rod (42) through the fixing assembly (2) and fixing it to the concrete foundation (1), and pouring concrete from the outside of the first accommodating space (21) to the area between the side walls of the groove (11) to form a first pouring layer (100); S2: placing the support member (31) in the first accommodation space (21), passing through the adjustment member (32) and adjusting the horizontality of the support member (31) by means of the first nut (33), and pouring concrete in the area inside the first accommodation space (21) and outside the second accommodation space (311) to form a second pouring layer (200); S3: Passing a plurality of annular fixing members (41) through the vertical support rod (42) in sequence and fixing them, adjusting the limit member (43) so that the diameter of the upper circular space is not less than the diameter of the lower circular space, passing the steel pipe column foot (5) through the plurality of circular spaces and installing it inside the second accommodation space (311), pouring concrete from the outer wall of the steel pipe column foot (5) to the inner wall of the groove (11) to form a third pouring layer (300), and pouring concrete inside the steel pipe column foot (5) to form a fourth pouring layer (400); S4: The third pouring layer (300) and the fourth pouring layer (400) are subjected to finishing treatment and covered with a film for moisture-retaining curing, and the curing time is not less than 7 days.

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