A steel column foot and construction method thereof

Abstract

The present application relates to a column foot of a section steel column and a construction method thereof, which includes an anchor rod, a section steel column base plate, an upper gasket, a lower gasket, an adjusting nut, a tightening nut and an anti-slip nut, wherein the lower end of the anchor rod is pre-buried in the pedestal, the upper end of the anchor rod is provided with a threaded section, the threaded section is provided outside the pedestal, the section steel column base plate is provided with a through-hole, the upper gasket and the lower gasket are respectively provided on the upper and lower sides of the section steel column base plate, the anchor rod passes through the lower gasket, the through-hole and the upper gasket, the adjusting nut, the tightening nut and the anti-slip nut are all threadedly connected to the outer wall of the threaded section, the upper end of the adjusting nut abuts the lower gasket, the lower end of the tightening nut abuts the upper gasket, and the upper end of the tightening nut abuts the anti-slip nut, the adjusting nut includes a main body and a ball, one side of the main body is coaxially provided with an annular groove, the ball is rollingly connected to the bottom of the annular groove, and one end of the ball extends out of the annular groove. The ball reduces the friction between the adjusting nut and the lower gasket, facilitates the rotation of the adjusting nut, realizes the leveling of the section steel column base plate, and improves construction efficiency.

Description

Technical Field

[0001] The present application relates to the field of section steel column construction, and in particular to a section steel column foot and a construction method thereof. Background Art

[0002] As the core load-bearing components of modern steel structures, steel columns (typically H-beams, box columns, and cross columns) are widely used in various construction projects and industrial facilities due to their significant advantages, including high strength, fast construction, and high degree of industrialization. Based on their structural characteristics, steel columns are primarily used in the following typical building types: as the primary vertical load-bearing components in high-rise and super-high-rise buildings; to achieve large spans in long-span public buildings (such as stadiums and convention centers); to leverage the advantages of standardized prefabrication in prefabricated buildings; and to meet the diverse functional requirements of complex buildings such as commercial complexes.

[0003] In modern building structures, steel-concrete composite structures are widely used due to their excellent seismic resistance and load-bearing capacity. The reliable connection between the steel columns and the concrete foundation is a key node for ensuring the safety of the entire structure. Currently, the industry generally adopts the column foot anchor connection method, which secures the steel columns to the concrete cap with pre-buried anchor bolts. As building height and span increase, column cross-sectional dimensions continue to increase, and the density of steel reinforcement layout increases significantly, placing higher demands on the construction accuracy and structural reliability of the column foot joints. In recent years, the promotion of prefabricated buildings has significantly reduced on-site welding work, and mechanical connection methods have become a development trend.

[0004] During actual construction, the column base anchor connection still presents several technical challenges that need to be addressed. The most prominent of these is the positioning and adjustment of the steel columns: construction workers must repeatedly adjust the position of the steel columns to ensure that the column baseplate meets strict horizontal requirements (flatness deviation is generally controlled within 2mm / m) and that the column shaft meets regulatory standards for verticality (typically, verticality deviation is required to be no more than 1 / 1000 of the column height and no more than 15mm). This adjustment process often requires the coordination of multiple people, using tools such as jacks and wedges for fine-tuning. This is not only time-consuming and labor-intensive, but also prone to new deviations when tightening the nuts. Repeated adjustments affect construction efficiency. According to statistics, traditional adjustment methods require an average of 2-3 hours per column base, severely impacting construction efficiency. Summary of the Invention

[0005] In order to improve construction efficiency, the present application provides a steel column base and a construction method thereof.

[0006] In the first aspect, the present application provides a steel column foot, which adopts the following technical solution:

[0007] The cam is secured to the bottom of the support rail and is secured to the bottom of the support rail when the cam is engaged.

[0008] By adopting the above technical solution, the base plate of the steel column and the adjusting nut respectively abut the upper and lower sides of the lower gasket. The ball reduces the friction between the adjusting nut and the lower gasket, making it easier to rotate the adjusting nut, thereby achieving leveling of the base plate of the steel column and improving construction efficiency.

[0009] Preferably, the adjusting nut further includes a spacer, and a plurality of the balls are provided, and the plurality of balls are evenly spaced around the axis of the annular groove, and a spacer is provided between two adjacent balls, and the spacer is slidably connected to the bottom of the annular groove.

[0010] By adopting this technical solution, multiple balls are evenly arranged along the axis of the annular groove under the constraints of the spacer, making the force on the adjusting nut more balanced. Compared with traditional single-point or unevenly distributed ball structures, this can effectively disperse the load and avoid local stress concentration, thereby significantly improving the load-bearing capacity of the adjusting nut and making it suitable for installation requirements of larger steel columns. The spacer not only separates the balls but also limits their free movement, preventing them from shifting or accumulating during force application. This ensures that the balls are always in the optimal working position, evenly applying force to the steel column during adjustment, avoiding nut deformation or ball jamming due to off-center loading, and improving adjustment accuracy.

[0011] Preferably, the spacer comprises a spacer plate and a connecting rod, the spacer plate is fixedly connected to both ends of the connecting rod, and the end of the spacer plate facing away from the connecting rod is used to abut against the ball.

[0012] By adopting the above technical solution, friction is reduced, the spacer plate is easy to slide, the spacer makes the balls evenly distributed, and the rolling of the balls pushes the spacer plate to move.

[0013] Preferably, the adjusting nut further includes lubricating liquid, and the lubricating liquid is arranged in the annular groove.

[0014] By adopting the above technical solution, the lubricating liquid reduces the friction between the spacer plate and the annular groove wall, reduces the friction between the ball and the annular groove wall, reduces the friction between the ball and the lower gasket, facilitates the adjustment of the position of the adjusting nut, facilitates the adjustment of the level of the steel column base plate, and improves construction efficiency.

[0015] Preferably, the adjusting nut further comprises a capsule, the lubricating liquid is disposed in the capsule, and the capsule is disposed between the ball and the spacer plate.

[0016] By adopting the above technical solution, when the adjusting nut abuts the lower gasket, the adjusting nut rotates to rotate the ball, the spacer slides, the ball squeezes the capsule to cause the capsule to rupture, and the lubricating liquid overflows to lubricate the ball and the spacer, thereby reducing the process of adding lubricating liquid to the annular groove before use and improving construction efficiency. When the adjusting nut is not in use, the lubricating liquid is located in the capsule, reducing the probability of the lubricating liquid drying out.

[0017] Preferably, the tightening nut and the adjusting nut have the same structure, the annular groove of the adjusting nut faces the lower gasket, and the annular groove of the tightening nut faces the upper gasket.

[0018] By adopting the above technical solution, the ball reduces the friction between the tightening nut and the upper gasket, making it easier to control the tightening nut to press against the upper gasket, thereby improving construction efficiency.

[0019] Preferably, it also includes a baffle and grouting material, the baffle is detachably connected to the outer wall of the steel column base plate and the upper end surface of the base, the baffle, the steel column base plate and the base together form a filling cavity, and the grouting material is filled in the filling cavity.

[0020] By adopting the above technical solution, the grouting material is filled in the filling cavity, and after solidification, the connection strength between the base plate of the steel column and the base is increased. The bubbles generated during the grouting process are discharged after passing through the gap between the adjusting nut and the lower gasket, the lower gasket, the through-hole, the upper gasket, and the gap between the upper gasket and the tightening nut, thereby improving the construction quality.

[0021] Preferably, the lubricating liquid is a moisture-curing polyurethane adhesive, and the material of the capsule is an aluminum-plastic composite film.

[0022] By adopting the above technical solution, liquid moisture-curing polyurethane adhesive is filled in a capsule made of aluminum-plastic composite film. The aluminum-plastic composite film provides excellent moisture and oxygen barrier properties and does not undergo obvious chemical reaction with the polyurethane adhesive. When the capsule is squeezed and ruptured, the moisture-curing polyurethane adhesive overflows and has a lubricating effect, making it easier to adjust the rotation of the nut. After reacting with moisture in the air for a period of time, it gradually cross-links and cures to form a strong adhesive layer, thereby improving the structural strength of the column foot.

[0023] Preferably, the lower end surface of the bottom plate of the steel column is set as an inclined surface, and the upper end surface of the lower gasket is in contact with the lower end surface of the bottom plate of the steel column.

[0024] By adopting the above technical solution, when grouting or high-strength concrete is used to fill the column base, the inclined surface structure facilitates self-leveling of the grout, reducing voids or looseness caused by gas entrapment. This allows gas to converge at one end, facilitating its discharge, increasing the structural lightweightness of the column base and improving construction quality. The inclined surface design creates a wedge-shaped fit between the steel column base plate and the lower gasket, generating a more uniform compression force when tightening the bolts and avoiding stress concentration caused by localized poor contact. Furthermore, the angle of the inclined surface can be adjusted according to project requirements to accommodate different load conditions, ensuring that the column base maintains a stable stress state during long-term use and reducing structural safety hazards caused by localized deformation.

[0025] In a second aspect, the present application provides a method for constructing a steel column foot, which adopts the following technical solution:

[0026] A method for constructing a section steel column foot comprises the following steps:

[0027] Before pouring the foundation, pre-embed the anchor rods and longitudinal column reinforcement to ensure that the vertical deviation of the exposed thread section is very small;

[0028] After the foundation is cured, install the adjusting nut and lower gasket in sequence;

[0029] Install the steel column base plate, use a level to calibrate the flatness, and rotate the adjusting nut to make the steel column base plate level;

[0030] Install the gasket, tighten the nut and the anti-slip nut in sequence;

[0031] Install baffles and fill with grouting material;

[0032] Connect the extension reinforcement to the longitudinal column reinforcement through a sleeve joint;

[0033] Bundling transverse fastening reinforcement;

[0034] The displacement of the column base is monitored synchronously while pouring concrete in layers.

[0035] By adopting the above technical solution, it is easy to adjust the horizontality of the bottom plate of the steel column, thereby improving the structural strength of the steel column foot and improving the construction quality and efficiency.

[0036] In summary, this application includes at least one of the following beneficial technical effects:

[0037] The steel column base plate and the adjusting nut respectively abut against the upper and lower sides of the lower gasket. The ball bearing reduces the friction between the adjusting nut and the lower gasket, making it easier to rotate the adjusting nut to achieve leveling of the steel column base plate and improve construction efficiency.

[0038] When the adjusting nut contacts the lower gasket, the adjusting nut rotates to rotate the ball, the spacer slides, the ball squeezes the capsule, causing the capsule to rupture, and the lubricating fluid overflows to lubricate the ball and the spacer, thus reducing the need to add lubricating fluid to the ring groove before use and improving construction efficiency. When the adjusting nut is not in use, the lubricating fluid is retained in the capsule, reducing the possibility of the lubricating fluid drying out.

[0039] Liquid moisture-curing polyurethane adhesive is filled in a capsule made of aluminum-plastic composite film. The aluminum-plastic composite film provides excellent moisture and oxygen barrier properties and does not undergo obvious chemical reaction with the polyurethane adhesive. When the capsule is squeezed and ruptured, the moisture-curing polyurethane adhesive overflows, providing lubrication and facilitating the rotation of the adjustment nut. After a period of reaction with moisture in the air, it gradually cross-links and cures to form a strong adhesive layer, thereby improving the structural strength of the column foot. BRIEF DESCRIPTION OF THE DRAWINGS

[0040] Figure 1 It is a schematic diagram of the overall structure of the column base of a steel column.

[0041] Figure 2 It is a schematic diagram of the overall structure of the steel column assembly and the connection assembly.

[0042] Figure 3 It is a cross-sectional view of the steel column assembly and the connection assembly.

[0043] Figure 4 yes Figure 3 Enlarged view of point A in the middle.

[0044] Figure 5 It is a schematic diagram of the overall structure of the adjusting nut.

[0045] Figure 6 It is a schematic diagram of the internal structure after the adjusting nut is cut open.

[0046] Explanation of reference numerals: 1, steel column assembly; 11, steel column base plate; 111, through-hole; 12, steel column frame; 13, stiffening plate; 14, bolt; 15, connecting plate; 151, connecting port; 2, connecting assembly; 21, anchor rod; 211, threaded section; 22, upper gasket; 221, upper through-hole; 23, lower gasket; 231, lower through-hole; 24, adjusting nut; 241, main body; 2411, threaded opening; 2412, ring groove; 24 13. Rolling groove; 2414. Anti-slipping mouth; 242. Ball; 243. Spacer; 2431. Spacer plate; 2432. Connecting rod; 244. Capsule; 245. Lubricating fluid; 25. Tightening nut; 26. Anti-slipping nut; 3. Filling assembly; 31. Grouting material; 32. Filling cavity; 4. Rebar positioning assembly; 41. Longitudinal column reinforcement; 42. Sleeve joint; 43. Extension reinforcement; 44. Transverse fastening reinforcement; 45. Connecting column; 451. Locking rod. DETAILED DESCRIPTION

[0047] The following is combined with Figure 1-6 This application is described in further detail.

[0048] The embodiment of the present application discloses a steel column base. Figure 1 A steel column base includes a steel column component 1, a connection component 2, a filler component 3 and a steel bar positioning component 4.

[0049] Reference Figure 1 and Figure 2 The steel column assembly 1 includes a steel column base plate 11, a steel column frame 12, a stiffening plate 13, bolts 14, and a connecting plate 15. The steel column frame 12 is welded to the upper end of the steel column base plate 11. The steel column frame 12 is an I-beam. The shape of the steel column base plate 11 is a rectangle. The center line of the steel column frame 12 is collinear with the center line of the steel column base plate 11. The stiffening plate 13 is shaped like a right-angled trapezoid. The two right-angled sides of the stiffening plate 13 are welded to the outer wall of the steel column frame 12 and the upper end of the steel column base plate 11, respectively. The stiffening plates 13 are used to improve the structural strength of the steel column frame 12 and the steel column base plate 11. A plurality of stiffening plates 13 are provided, and the plurality of stiffening plates 13 are spaced around the steel column frame 12. In this embodiment, there are ten stiffening plates 13, eight of which are welded to the four corners of the I-beam, two stiffening plates 13 are welded to each corner of the I-beam, and the two stiffening plates 13 are perpendicular to each other. The other two stiffening plates 13 are respectively arranged on both sides of the web of the I-beam, the stiffening plates 13 are perpendicular to the web of the I-beam, and the stiffening plates 13 are welded to the web of the I-beam.

[0050] Reference Figure 3 and Figure 4 The steel column base plate 11 is provided with a through-hole 111. The axis of the through-hole 111 is parallel to the length direction of the steel column frame 12. The through-hole 111 passes through the steel column base plate 11. There are multiple through-holes 111, which are spaced along the edge of the steel column base plate 11. The stiffening plates 13 are provided on the outside of the through-holes 111. In this embodiment, there are ten through-holes 111, with one through-hole 111 between two adjacent stiffening plates 13. The studs 14 are fixedly connected to the outer wall of the flange of the steel column frame 12. There are multiple studs 14, which are evenly spaced along the height direction of the steel column frame 12. The studs 14 are used to increase the connection strength between the steel column frame 12 and the concrete.

[0051] Reference Figure 1 The connecting plate 15 is welded to the outer wall of the flange of the steel column 12. The connecting plate 15 is provided with a connecting port 151. The axis of the connecting port 151 is horizontal and perpendicular to the web of the I-beam. The connecting port 151 passes through the connecting plate 15. There are multiple connecting ports 151.

[0052] Reference Figure 3 and Figure 4 The connection component 2 is arranged in a one-to-one correspondence with the through-opening 111 , and the connection component 2 includes an anchor rod 21 , an upper gasket 22 , a lower gasket 23 , an adjusting nut 24 , a tightening nut 25 and an anti-slip nut 26 . The lower end of the anchor rod 21 is pre-embedded in the pedestal, and the upper end of the anchor rod 21 is provided with a threaded section 211, and the threaded section 211 is provided outside the pedestal. The upper gasket 22 and the lower gasket 23 are respectively provided on the upper and lower sides of the steel column base plate 11. The upper gasket 22 is coaxially provided with an upper through opening 221, and the lower gasket 23 is coaxially provided with a lower through opening 231. The anchor rod 21 passes through the lower through opening 231, the through opening 111 and the upper through opening 221. The diameters of the lower through opening 231, the through opening 111 and the upper through opening 221 are all larger than the diameter of the anchor rod 21. The adjusting nut 24, the tightening nut 25 and the anti-slip nut 26 are all threadedly connected to the outer wall of the threaded section 211. The upper end of the adjusting nut 24 abuts the lower gasket 23, the lower end of the tightening nut 25 abuts the upper gasket 22, and the upper end of the tightening nut 25 abuts the anti-slip nut 26.

[0053] Reference Figure 5 and Figure 6 The adjusting nut 24 includes a main body 241, a ball 242, a spacer 243, a capsule 244 and a lubricating liquid 245. The main body 241 is coaxially provided with a threaded opening 2411, and a ring groove 2412 is coaxially provided on one side of the main body 241. The ring groove 2412 is arranged on the outer periphery of the threaded opening 2411. The ring groove 2412 includes a rolling groove 2413 and an anti-slip opening 2414. The anti-slip opening 2414 is connected to the opening of the rolling groove 2413. The width of the rolling groove 2413 increases as it moves away from the bottom of the rolling groove 2413, and the width of the anti-slip opening 2414 decreases as it moves away from the rolling groove 2413. The ball 242 is rollingly connected to the bottom of the ring groove 2412, and one end of the ball 242 extends out of the ring groove 2412.

[0054] Reference Figure 4 and Figure 5 The structures of the tightening nut 25, the anti-slip nut 26 and the adjusting nut 24 are the same. The annular groove 2412 of the adjusting nut 24 faces the lower gasket 23, and the annular grooves 2412 of the tightening nut 25 and the anti-slip nut 26 face the upper gasket 22.

[0055] Reference Figure 5A plurality of balls 242 are provided, evenly spaced about the axis of the annular groove 2412. A spacer 243 is provided between two adjacent balls 242. The spacer 243 is slidably connected to the bottom of the annular groove 2412. The number of spacers 243 is the same as the number of balls 242. Each spacer 243 includes two spacer plates 2431 and a connecting rod 2432. The two spacer plates 2431 are fixedly connected to the ends of each connecting rod 2432. The ends of the spacer plates 2431 facing away from the connecting rod 2432 are used to abut against the balls 242. The spacer plates 2431 are slidably connected to the bottom of the annular groove 2412 and are semicircular in shape.

[0056] Capsules 244 are positioned between ball 242 and spacer 2431. Capsules 244 are located on both sides of ball 242. Lubricating fluid 245 is contained within capsules 244. Lubricating fluid 245 is moisture-curing polyurethane adhesive. When uncured, moisture-curing polyurethane adhesive is in a liquid or paste-like state, exhibiting good fluidity and providing lubrication, facilitating position adjustment or assembly. By reacting with moisture in the air, it gradually crosslinks and solidifies, forming a strong adhesive layer. Capsules 244 are constructed from an aluminum-plastic composite film, a multilayer composite film comprising an outer layer of PET, an intermediate layer of aluminum foil, and an inner layer of PE or PP. The aluminum foil layer provides excellent moisture and oxygen barrier properties, while the inner layer of PE or PP ensures chemical compatibility with the moisture-curing polyurethane adhesive. The aluminum-plastic composite film is sealed by mechanical compression or heat sealing and can be ruptured by extrusion.

[0057] Reference Figure 1 and Figure 2 The filler assembly 3 includes a baffle (not shown) and grouting material 31. The baffle is detachably connected to the outer wall of the steel column base plate 11 and the upper end surface of the base. The baffle protrudes above the upper surface of the steel column base plate 11. The baffle, steel column base plate 11, and base together form a filling cavity 32, which is filled with grouting material 31. The grouting material 31 is a high-strength, non-shrinkage grouting material 31 with low expansion, high fluidity, and durability. The baffle is provided with a grouting port, through which grouting is injected into the filling cavity 32.

[0058] Reference Figure 4 The gas in the filling cavity 32 is discharged through the gap between the adjusting nut 24 and the lower gasket 23, the lower opening 231, the through-hole 111, the upper opening 221, and the gap between the upper gasket 22 and the tightening nut 25. The lower surface of the steel column base plate 11 is tilted on one side at an angle of 1 degree. During grouting, the gas naturally gathers at a higher position. The upper surface of the lower gasket 23 is in contact with the steel column base plate 11 and is parallel to the upper surface of the steel column base plate 11.

[0059] Reference Figure 1The steel bar positioning assembly 4 includes a longitudinal column reinforcement 41, a sleeve joint 42, an extension reinforcement 43, a transverse fastening reinforcement 44 and a connecting column 45. The longitudinal column reinforcement 41 is arranged on the outer periphery of the steel column base plate 11, and the lower end of the longitudinal column reinforcement 41 is embedded in the base. There are multiple longitudinal column reinforcements 41, and multiple longitudinal column reinforcements 41 are evenly spaced around the steel column base plate 11. The inner wall of the sleeve joint 42 is threadedly connected to the upper end of the longitudinal column reinforcement 41, and the lower end of the extension reinforcement 43 is threadedly connected to the inner wall of the sleeve joint 42. The transverse fastening reinforcement 44 is horizontally tied to the longitudinal column reinforcement 41 or the extension reinforcement 43. There are multiple transverse fastening reinforcements 44, and some transverse fastening reinforcements 44 pass through the connecting port 151. An adjustment port is provided at one end of the bolt 14 that faces away from the steel column steel frame 12, one end of the connecting column 45 is threadedly connected to the inner wall of the adjustment port, and the other end of the connecting column 45 is fixedly connected to a locking rod 451, which abuts against the outer wall of the transverse fastening rib 44 that faces away from the steel column assembly 1.

[0060] The implementation principle of the column foot of a steel column in the embodiment of the present application is as follows: the ball 242 makes it easy for the adjusting nut 24, the tightening nut 25 and the anti-stripping nut 26 to rotate and tighten, and it is easy to adjust the horizontality of the steel column base plate 11, reducing errors. When the adjusting nut 24, the tightening nut 25 and the anti-stripping nut 26 are not in use, the lubricating liquid 245 is set in the capsule 244, reducing the probability of the lubricating liquid 245 drying up. When the ball 242 rotates, the ball 242 squeezes the capsule 244 so that the capsule 244 ruptures and the lubricating liquid 245 overflows, reducing the friction between the spacer plate 2431 and the groove wall of the annular groove 2412, reducing the friction between the ball 242 and the groove wall of the annular groove 2412, reducing the friction between the ball 242 and the lower gasket 23 or the upper gasket 22, and reducing the friction between the lubricating liquid 245 and the lower gasket 23. After overflowing for a period of time, it reacts with water vapor in the air to form an adhesive layer, thereby improving the structural strength of the column base. A baffle is installed to form a filling cavity 32, and grouting material 31 is filled into the filling cavity 32. The gas in the filling cavity 32 is gathered to one end along the height difference of the steel column base plate 11, and is discharged after passing through the gap between the adjusting nut 24 and the lower gasket 23, the lower through-hole 231, the through-hole 111, the upper through-hole 221, and the gap between the upper gasket 22 and the tightening nut 25. When the gas passes through the nut, the water vapor carried in the gas promotes the lubricating liquid 245 to form an adhesive layer. After filling, it is cured for a period of time, and the sleeve joint 42, the extension rib 43 and the transverse fastening rib 44 are installed. The transverse fastening rib 44 is connected to the stud 14 through a connecting rod to improve the overall structural strength of the steel column base.

[0061] The present application also discloses a method for constructing the base of a steel column. Figure 1 and Figure 4 A method for constructing a steel column foot comprises the following steps:

[0062] Before pouring the cap, the anchor rods 21 and the longitudinal column reinforcement 41 are embedded to ensure that the vertical deviation of the exposed threaded section 211 is very small;

[0063] After the foundation is cured, install the adjusting nut 24 and the lower gasket 23 in sequence;

[0064] Install the steel column base plate 11, use a level to calibrate the flatness of the steel column base plate 11, and rotate the adjustment nut 24 to make the steel column base plate 11 level;

[0065] Install the gasket 22, tighten the nut 25 and the anti-slip nut 26 in sequence;

[0066] Install a baffle to form a filling cavity 32, and fill the filling cavity 32 with grouting material 31;

[0067] Grouting material 31 curing;

[0068] Connect the extension reinforcement 43 to the longitudinal column reinforcement 41 through the sleeve joint 42;

[0069] tying transverse fastening bars 44;

[0070] The displacement of the column base is monitored synchronously while pouring concrete in layers.

[0071] The implementation principle of a steel column base construction method in an embodiment of the present application is: when installing the steel column base plate 11, rotate the adjusting nut 24 according to the indication of the level instrument to facilitate adjustment of the horizontality of the steel column base plate 11. After adjusting the level, install the gasket 22, tighten the nut 25 and the anti-slip nut 26 in sequence. Tightening the nut 25 facilitates tightening, and the anti-slip nut 26 improves the stability of the column base, improves the structural strength of the steel column base, and improves the construction quality and efficiency.

[0072] The above are all preferred embodiments of the present application, and are not intended to limit the scope of protection of the present application. Therefore, any equivalent changes made based on the structure, shape, and principle of the present application should be included in the scope of protection of the present application.

Claims

1. A steel column foot, characterized in that: The invention comprises an anchor rod (21), a steel column base plate (11), an upper gasket (22), a lower gasket (23), an adjusting nut (24), a tightening nut (25) and an anti-slip nut (26), wherein the lower end of the anchor rod (21) is pre-buried in the pedestal, the upper end of the anchor rod (21) is provided with a threaded section (211), and the threaded section (211) is arranged outside the pedestal, the steel column base plate (11) is provided with a through-hole (111), the upper gasket (22) and the lower gasket (23) are respectively arranged on the upper and lower sides of the steel column base plate (11), the anchor rod (21) passes through the lower gasket (23), the through-hole (111) and the upper gasket (22), and the The adjusting nut (24), the tightening nut (25) and the anti-slip nut (26) are all threadedly connected to the outer wall of the threaded section (211); the upper end of the adjusting nut (24) abuts against the lower gasket (23); the lower end of the tightening nut (25) abuts against the upper gasket (22); the upper end of the tightening nut (25) abuts against the anti-slip nut (26); the adjusting nut (24) includes a main body (241) and a ball (242); a ring groove (2412) is coaxially provided on one side of the main body (241); the ball (242) is rollingly connected to the bottom of the ring groove (2412); one end of the ball (242) extends out of the ring groove (2412); The adjusting nut (24) further includes a spacer (243), a plurality of balls (242) are provided, the plurality of balls (242) are evenly spaced around the axis of the annular groove (2412), a spacer (243) is provided between two adjacent balls (242), and the spacer (243) is slidably connected to the bottom of the annular groove (2412); The spacer (243) comprises a spacer plate (2431) and a connecting rod (2432), wherein the spacer plate (2431) is fixedly connected to both ends of the connecting rod (2432), and an end of the spacer plate (2431) facing away from the connecting rod (2432) is used to abut against the ball (242); The adjusting nut (24) further includes a lubricating liquid (245), and the lubricating liquid (245) is disposed in the annular groove (2412); The adjusting nut (24) further comprises a capsule (244), the lubricating fluid (245) is disposed in the capsule (244), and the capsule (244) is disposed between the ball (242) and the spacer plate (2431).

2. The column foot of a section steel column according to claim 1, characterized in that: The tightening nut (25) and the adjusting nut (24) have the same structure, the annular groove (2412) of the adjusting nut (24) faces the lower gasket (23), and the annular groove (2412) of the tightening nut (25) faces the upper gasket (22).

3. The column foot of a section steel column according to claim 2, characterized in that: It also includes a baffle and grouting material (31), wherein the baffle is detachably connected to the outer wall of the steel column base plate (11) and the upper end surface of the base, and the baffle, the steel column base plate (11) and the base together form a filling cavity (32), and the grouting material (31) is filled in the filling cavity (32).

4. The column foot of a section steel column according to claim 3, characterized in that: The lubricating liquid (245) is a moisture-curing polyurethane adhesive, and the material of the capsule (244) is an aluminum-plastic composite film.

5. The column foot of a section steel column according to claim 3, characterized in that: The lower end surface of the profiled steel column bottom plate (11) is configured as an inclined surface, and the upper end surface of the lower gasket (23) is in contact with the lower end surface of the profiled steel column bottom plate (11).

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