Fabricated steel structure central load-bearing column

Abstract

The application relates to a fabricated steel structure center bearing column, which comprises a concrete base, a mounting groove cavity is arranged on the concrete base, a plurality of groups of prefabricated steel braces are arranged in the mounting groove cavity, the plurality of groups of prefabricated steel braces are enclosed to form a plug-in chamber, a center adjusting support pipe outer wall is combined with the plug-in chamber in abutment, a center column lower end is combined with a groove bottom of the mounting groove cavity, a profile steel cross beam is horizontally arranged at an upper end position of the center column, a middle connecting body is arranged at a connecting end position of adjacent profile steel cross beams, a rigid rope is arranged on the middle connecting body, one end of the rigid rope is connected with the center adjusting support pipe, and an adjusting mechanism adjusts the vertical direction lifting of the center adjusting support pipe to tighten the rigid rope, the center bearing column can conveniently install the column and the base, can support the column, can resist the uneven horizontal moment applied to the column by the profile steel cross beam, can ensure the stability of the column and the base combination, and can ensure the stability of the whole steel structure building.

Description

Technical Field

[0001] This invention relates to the field of steel structure technology, and specifically to a prefabricated steel structure central load-bearing column. Background Technology

[0002] Prefabricated steel structures are building structures made of steel materials, mainly including steel profiles, steel plates, steel columns, and steel trusses. Due to their advantages of light weight, convenient construction, and reusability, they are widely used in large-area buildings such as large factories and stadiums. Currently, most prefabricated steel structures are assembled and fixed by welding, bolting, or riveting during the assembly and connection process.

[0003] When steel structure buildings are used in mid-rise or high-rise residential buildings, the simple frame structure poses a challenge to the overall stability of the steel structure. Therefore, in practical applications, steel column structures are generally used. Multiple sets of columns are vertically arranged on the building base to improve the stability of the entire steel structure. Steel beams are installed at the top of the columns, forming a unified structure between them. During installation, bolts are pre-embedded in the base, forming a cylindrical shape. The column itself is tubular, and a mounting cap with perforations around its circumference is installed at the bottom. During actual construction, the column is lifted using hoisting equipment. The column is installed above the base, with the pre-embedded bolts passing through the holes in the mounting cap. By setting the fastening bolts, the column and base are fixedly connected. However, during the above construction, there are difficulties in hoisting and installing the pre-embedded bolts and the column, requiring repeated alignment and making installation inconvenient. Furthermore, as the column supports the entire steel structure, it bears both vertical stress from the steel beams and horizontal stress. When the horizontal stress on the column is uneven, it can easily cause wear at the connection between the column and the base. With the increase in service life, the pre-embedded bolts between the column and the base may bend and deform, which may lead to a risk of connection instability between the column and the base. Summary of the Invention

[0004] The purpose of this invention is to provide a prefabricated steel structure central load-bearing column, which facilitates the installation of the column and the base, and can provide support for the column to resist the uneven horizontal moment applied to the column by the steel beam, ensuring the stability of the connection between the column and the base, and ensuring the stability of the entire steel structure building.

[0005] The specific technical solution adopted by this invention is as follows:

[0006] A prefabricated steel structure central load-bearing column, including

[0007] A concrete base, on which an installation groove is provided;

[0008] Multiple sets of prefabricated steel supports are provided within the mounting groove cavity. The prefabricated steel supports are fastened to the inner wall of the mounting groove cavity, and the multiple sets of prefabricated steel supports enclose a insertion chamber.

[0009] A central adjustment support tube is disposed within the insertion chamber, and the outer wall of the central adjustment support tube abuts against and is connected to the insertion chamber.

[0010] The central column is located at the center of the central adjusting support tube, and its lower end is connected to the bottom of the mounting groove.

[0011] A steel crossbeam is horizontally installed at the upper end of the central column, and multiple sets of the steel crossbeam are spaced apart along the circumferential direction of the central column.

[0012] An intermediate connector is located at the connection end of an adjacent steel beam, and a rigid rope extends from the intermediate connector. One end of the rigid rope is connected to the upper end of a central adjusting support pipe. An adjusting mechanism adjusts the vertical movement of the central adjusting support pipe and tightens the rigid rope.

[0013] The present invention also has the following features:

[0014] In a preferred embodiment of the invention, the outer wall of the central adjusting support tube is provided with a support body, the support body is arranged along the circumferential direction of the outer wall of the central adjusting support tube, one end of the support body is connected to the outer wall of the central adjusting support tube, and the other end of the support body is connected to the prefabricated steel support.

[0015] In a preferred embodiment of the invention, the upper end of the central column and the lower end of the plug-in column form a plug-in fit, and the plug-in column and the steel beam are located at the upper end of the plug-in column.

[0016] In a preferred embodiment of the invention, the precast steel supports are provided with a passage gap between adjacent supports, the adjustment mechanism includes an adjustment arc surface provided on the lower plate of the precast steel supports, the adjustment arc surface includes a first plane and a second plane, the first plane is lower than the second plane, the first plane and the second plane are connected by an arc transition, one end of the support body is provided with a support end, the support end abuts against the first plane or the second plane.

[0017] In a preferred embodiment of the invention, the opening of the mounting cavity is generally circular with a narrowed opening. The edge of the prefabricated steel support is provided with a support platform, which cooperates with the step of the inner wall of the mounting cavity. One end of the support body is provided with a support roller, which is horizontal and arranged along the radial direction of the central adjusting support tube. The roller body abuts against the first plane or the second plane. A support spring is sleeved on the central adjusting support tube, and the upper and lower ends of the support spring abut against the outer wall of the central adjusting support tube and the bottom of the mounting cavity, respectively.

[0018] In a preferred embodiment of the invention, the support roller is rotatably mounted on a roller frame, the roller frame is mounted on a support roller, the support roller is sleeved outside the central adjusting support tube, the outer wall of the support roller abuts against the inner wall of the precast steel support, a connecting slide rod is vertically slidably mounted on the roller frame, the upper end of the connecting slide rod is hinged to one end of the connecting arm via a connecting seat, a connecting spring is sleeved on the connecting slide rod, the upper and lower ends of the connecting spring abut against the connecting seat and the roller frame respectively, the other end of the connecting arm is hinged to the connecting slider, the hinge axes at both ends of the connecting arm are horizontal and perpendicular to the axial direction of the support roller, and the connecting slider is slidably mounted in a groove on the outer wall of the central adjusting support tube, the groove being arranged along the length direction of the central adjusting support tube.

[0019] In a preferred embodiment of the invention, a support base is provided at the lower end of the central column, and when the support roller abuts against the first plane, the roller body of the support roller abuts against the upper plate surface of the support base.

[0020] In a preferred embodiment of the invention, the central column comprises two sets of channel steel plates, which are arranged vertically with their bottoms touching. Two sets of plug-in plates are vertically arranged on the plug-in column. The inner surfaces of the two sets of channel steel plates are provided with a first inclined surface, and the two sets of plug-in plates are provided with a second inclined surface. The two sets of plug-in plates are respectively inserted into the slots of the two sets of channel steel plates, with the first inclined surface abutting against the second inclined surface. A sleeve is provided around the two sets of channel steel plates, and the lower end of the plug-in column is inserted into the upper end of the sleeve.

[0021] In a preferred embodiment of the invention, two sets of steel crossbeams are fixed vertically. The intermediate connecting body includes an insert connector at one end of the steel crossbeam. The insert connector is horizontal and inserted into the slot of the adjacent steel crossbeam. One end of the steel crossbeam is also provided with an insert crossbeam. Multiple sets of support rollers are spaced apart on the insert crossbeam. The multiple sets of support rollers are engaged in the slot of the adjacent steel crossbeam. One end of the steel crossbeam is also provided with a guide slide rod. The guide slide rod is horizontal and parallel to the steel crossbeam. One end of the guide slide rod is in sliding engagement with one end of the adjacent steel crossbeam. A guide spring is sleeved on the guide slide rod. The two ends of the guide spring abut against the end faces of the two adjacent steel crossbeams respectively. One end of the rigid rope is connected to one end of the insert crossbeam. The rigid rope extends along the steel crossbeam to the insert column and is connected to the upper end of the central adjusting support tube.

[0022] The upper end of the plug-in column is provided with a receiving groove for engaging one end of the steel beam. A first connecting plate is provided on one side of the receiving groove. The first connecting plate is provided with a groove for a rigid rope to pass through. A second connecting plate is provided at one end of the steel beam. An adjusting screw is provided between the second connecting plate and the first connecting plate.

[0023] The technical effect achieved by this invention is as follows: During actual construction, a precast concrete base is laid on the foundation surface for the central load-bearing column. An installation groove is pre-reserved on the concrete base. Precast steel supports are placed within the installation groove, with multiple sets arranged along the circumferential direction of the groove. The precast steel supports are tightly connected to the inner wall of the groove, and these multiple sets of precast steel supports enclose a connecting chamber. A central adjusting support pipe is inserted into this cylindrical connecting chamber formed by the multiple sets of precast steel supports, with its outer wall abutting against the cylindrical connecting chamber. A central column is installed inside the central adjusting support pipe, and a steel beam is installed at the upper end of the central column. By supporting the steel beams, the reliable support of the central adjusting support pipe can form a reliable support for the central column, thereby providing strong circumferential support for the central column. This replaces the problems caused by the existing screw fastening method. Furthermore, by setting rigid ropes on the intermediate connecting body between adjacent steel beams, and adjusting the vertical descent of the central adjusting support pipe through the adjusting mechanism, the rigid ropes can be tightened. This allows the central column to bear a uniform horizontal moment in the circumferential direction, ensuring the stability of the column and base connection, and ensuring the stability of the entire steel structure building. Attached Figure Description

[0024] Figure 1 This is a front view of the prefabricated steel structure's central load-bearing column in a usage state, according to one embodiment of the present invention.

[0025] Figure 2This is a structural schematic diagram of the prefabricated steel structure in use at the central load-bearing column in one embodiment of the present invention;

[0026] Figure 3 This is a schematic diagram of the assembly of the upper end of the central load-bearing column of the prefabricated steel structure with the steel beam in one embodiment of the present invention;

[0027] Figure 4 This is a schematic diagram of the upper end structure of the plug-in column in the central load-bearing column of the prefabricated steel structure in one embodiment of the present invention;

[0028] Figure 5 and Figure 6 These are schematic diagrams of the intermediate connecting body in the central load-bearing column of the prefabricated steel structure according to one embodiment of the present invention from two different perspectives.

[0029] Figure 7 This is a cross-sectional structural diagram of the intermediate connecting body in the central load-bearing column of the prefabricated steel structure in one embodiment of the present invention;

[0030] Figure 8 This is a partial structural schematic diagram of the central load-bearing column of the prefabricated steel structure in one embodiment of the present invention;

[0031] Figure 9 yes Figure 8 A schematic diagram of the cross-sectional structure;

[0032] Figure 10 yes Figure 9 A plan view;

[0033] Figure 11 This is a schematic diagram of the assembly of the concrete base, precast steel brace and bracing body in the central load-bearing column of the prefabricated steel structure in one embodiment of the present invention;

[0034] Figure 12 and Figure 13 These are schematic diagrams of the assembly of a concrete base and precast steel bracing in a prefabricated steel structure central load-bearing column according to one embodiment of the present invention.

[0035] Figure 14 This is a schematic diagram of the concrete base in the central load-bearing column of a prefabricated steel structure according to one embodiment of the present invention. Detailed Implementation

[0036] To make the objectives and advantages of this invention clearer, the invention will be specifically described below with reference to embodiments. It should be understood that the following text is merely used to describe one or more specific embodiments of the invention and does not strictly limit the scope of protection specifically claimed by the invention. As used herein, the terms "parallel" and "perpendicular" are not limited to their strict geometric definitions, but include tolerances for reasonable and inconsistent machining or human errors.

[0037] The following is in conjunction with the appendix Figures 1 to 14 The prefabricated steel structure central load-bearing column of the present invention will be described in detail below:

[0038] In existing prefabricated steel structure residential buildings, especially mid-rise or high-rise buildings, the central column is typically a cylindrical tube with a mounting cap at its lower end. This mounting cap has circumferential holes. During construction, the central column is hoisted to the base using lifting equipment, and pre-embedded bolts are passed through the holes in the mounting cap. These bolts are then tightened to secure the central column to the base. However, this construction method presents difficulties in installing the pre-embedded bolts and the column, requiring repeated alignment and making installation inconvenient. Furthermore, during the process of supporting the entire steel structure, the columns bear both vertical stress applied by the steel beams and horizontal stress. When the horizontal stress on the columns is uneven, wear can easily occur at the connection between the columns and the base. With the increase in service life, the embedded bolts between the columns and the base may bend and deform, leading to a risk of connection instability between the columns and the base. To address this, this invention proposes a prefabricated steel structure central load-bearing column, including a concrete base 100. The device includes an installation groove 110; multiple sets of prefabricated steel supports 200 are located within the installation groove 110, and the prefabricated steel supports 200 are securely connected to the inner wall of the installation groove 110, with the multiple sets of prefabricated steel supports 200 forming an insertion chamber; a central adjusting support pipe 300 is disposed within the insertion chamber, and the outer wall of the central adjusting support pipe 300 abuts against the insertion chamber; a central column 500 is disposed at the center of the central adjusting support pipe 300, and its lower end is connected to the bottom of the installation groove 110. The system comprises: a steel crossbeam 600, horizontally positioned at the upper end of the central column 500, with multiple sets of steel crossbeams 600 spaced apart along the circumferential direction of the central column 500; an intermediate connector 700, positioned at the connecting end of adjacent steel crossbeams 600, with a rigid rope 900 extending from the intermediate connector 700; one end of the rigid rope 900 being connected to the upper end of the central adjusting support pipe 300; an adjusting mechanism adjusting the vertical rise and fall of the central adjusting support pipe 300 and tightening the rigid rope 900.

[0039] In one embodiment, see Figure 12 and Figure 13As shown, during actual construction, the building foundation surface is treated, and foundation piles are driven in advance to stabilize the foundation and prevent deformation. A concrete base 100 is prefabricated on the foundation surface using concrete and steel reinforcement. An installation groove 110 is pre-reserved on the concrete base 100. The installation groove 110 is generally a stepped hole shape, smaller at the top and larger at the bottom. Prefabricated steel supports 200 are hoisted into the installation groove 110 using hoisting equipment. The prefabricated steel supports 200 have a petal-like structure, and four sets can be installed circumferentially within the installation groove 110. The four sets of installation grooves 110... The four sets of installation slots 110 form a rigid foundation support. The precast steel support 200 is tightly connected to the inner wall of the installation slot 110. The central adjustment support pipe 300 is inserted into the insertion chamber enclosed by the four sets of installation slots 110, and the outer wall of the central adjustment support pipe 300 abuts against the inner wall of the insertion chamber. This ensures that the central adjustment support pipe 300, the precast steel support 200 and the concrete base 100 form a stable whole. A central column 500 is set on the inner wall of the central adjustment support pipe 300 to provide stable support for the central column 500.

[0040] In one embodiment, steel beams 600 are installed at the upper end of the central column 500, and multiple sets of steel beams 600 are arranged horizontally at intervals along the circumferential direction of the central column 500. Each adjacent central column 500 has a steel beam 600 at its upper end, and adjacent steel beams 600 are connected as a single unit by an intermediate connector 700. A rigid rope 900 is installed on the intermediate connector 700, with one end of the rigid rope 900 extending to connect to the upper end of the central adjusting support pipe 300. The vertical lifting and lowering of the central adjusting support pipe 300 is adjusted by an adjusting mechanism, and the rigid rope 900 is tightened. Four sets of steel beams 600 are arranged at intervals along the circumferential direction at the upper end of the central column 500. Each set of steel beams 600 is pulled together by the rigid rope 900 and tightened to the upper end of the central adjusting support pipe 300, thereby ensuring that the central column 500 bears a uniform horizontal moment in the circumferential direction, ensuring the stability of the connection between the column and the base.

[0041] In one embodiment, a support body 400 is provided on the outer wall of the central adjusting support tube 300. The support body 400 is arranged along the circumferential direction of the outer wall of the central adjusting support tube 300. One end of the support body 400 is connected to the outer wall of the central adjusting support tube 300, and the other end of the support body 400 is connected to the prefabricated steel support 200.

[0042] In one embodiment, four sets of support bodies 400 are arranged at intervals along the circumferential direction of the outer wall of the central adjusting support tube 300. One end of the support body 400 is connected to the outer wall of the central adjusting support tube 300, and the other end is connected to the precast steel support 200, thereby ensuring that the support body 400 can exert a stable pull on the central adjusting support tube 300. When the central column 500 is subjected to uneven stress in the horizontal direction, the support body 400 can form a reliable support for the central adjusting support tube 300, thereby ensuring the stability of the entire central bearing column and avoiding the tilting problem of the central bearing column.

[0043] In one embodiment, to extend the central column 500 to accommodate the support of a taller steel beam 600, the upper end of the central column 500 and the lower end of the plug-in column 800 are plugged into each other, and the plug-in column 800 and the steel beam 600 are located at the upper end of the plug-in column 800.

[0044] In one embodiment, to facilitate the support body 400 passing through the precast steel support 200 and entering the lower end position of the precast steel support 200, a passage gap 210 is provided between adjacent precast steel supports 200. The adjustment mechanism includes an adjustment arc surface 220 provided on the lower plate surface of the precast steel support 200. The adjustment arc surface 220 includes a first plane 221 and a second plane 222. The first plane 221 is lower than the second plane 222. The first plane 221 and the second plane 222 are connected by an arc transition. One end of the support body 400 is provided with a support end, which abuts against the first plane 221 or the second plane 222.

[0045] By adjusting the support end of the bracing body 400 to abut against the first plane 221 or the second plane 222, the central adjusting support tube 300 can be adjusted to be in the vertical direction, and the rigid rope 900 can be tightened to ensure a reliable connection to the steel beam 600 at the upper end of the central column 500, and to ensure the stability of the connection between adjacent steel beams 600. Furthermore, the bracing body 400 abutting against the first plane 221 or the second plane 222 can form a stable support for the central column 500.

[0046] In one embodiment, see Figure 12 and Figure 13The groove of the mounting cavity 110 has a circular structure with a narrow opening. The edge of the prefabricated steel support 200 is provided with a support platform. The support platform cooperates with the step of the inner wall of the groove of the mounting cavity 110. One end of the support body 400 is provided with a support roller 410. The support roller 410 is horizontal and arranged along the radial direction of the central adjusting support tube 300. The roller body of the support roller 410 abuts against the first plane 221 or the second plane 222. A support spring 310 is sleeved on the central adjusting support tube 300. The upper and lower ends of the support spring 310 abut against the outer wall of the central adjusting support tube 300 and the bottom of the mounting cavity 110, respectively.

[0047] In one embodiment, during the actual construction of the central adjusting support pipe 300, after the central column 500 and the plug-in column 800 are hoisted, the steel beam 600 and the upper end of the plug-in column 800 are installed using hoisting equipment. An intermediate connector 700 is then installed between adjacent steel beams 600 to achieve connection between them. Then, one end of the rigid rope 900 is connected to the intermediate connector 700, and the central adjusting support pipe 300 is driven downwards by the assembly and adjusting equipment to adjust the support spring. The compression of 310 causes the support roller 410 to pass through the gap 210 between the prefabricated steel supports 200, and the rotation of the center adjusting support tube 300 is performed so that the support roller 410 abuts against the second plane 222 and rotates from the second plane 222 to the first plane 221, thereby tightening the rigid rope 900 and releasing the assembly adjustment device so that the center adjusting support tube 300 and the prefabricated steel supports 200 can form a reliable whole, ensuring a reliable connection between the steel beams 600.

[0048] In one embodiment, the support roller 410 is rotatably mounted on a roller frame, the roller frame is mounted on a support roller 420, the support roller 420 is sleeved outside the central adjusting support tube 300, the outer wall of the support roller 420 abuts against the inner wall of the precast steel support 200, a connecting slide rod 430 is vertically slidably mounted on the roller frame, the upper end of the connecting slide rod 430 is hinged to one end of the connecting arm 440 through a connecting seat, a connecting spring 431 is sleeved on the connecting slide rod 430, the upper and lower ends of the connecting spring 431 abut against the connecting seat and the roller frame respectively, the other end of the connecting arm 440 is hinged to the connecting slider 450, the hinge axes at both ends of the connecting arm 440 are horizontal and perpendicular to the axial direction of the support roller 420, and the connecting slider 450 is slidably mounted in a groove on the outer wall of the central adjusting support tube 300, the groove being arranged along the length of the central adjusting support tube 300.

[0049] In one embodiment, the roller frame is installed on the support roller 420. When the central adjusting support tube 300 moves down to the lowest point, the support roller 420 can support the outer wall of the central adjusting support tube 300, so that the central adjusting support tube 300 and the prefabricated steel support 200 form an integral whole, ensuring the stability of the support for the central adjusting support tube 300.

[0050] In one embodiment, the slot is arranged along the length of the central adjusting support tube 300. The support body 400 can be hoisted into the slot using a hoisting device, so that the connecting slider 450 is locked in the slot, which facilitates the quick installation of the support body 400 and the central adjusting support tube 300.

[0051] In one embodiment, a support base 510 is provided at the lower end of the central column 500. When the support roller 410 abuts against the first plane 221, the roller body of the support roller 410 abuts against the upper plate surface of the support base 510.

[0052] When the central adjusting support tube 300 is moved downward by the assembly and adjustment equipment, and the central adjusting support tube 300 is rotated, the support roller 410 abuts against the second plane 222, and the support roller 410 rotates from the second plane 222 to the first plane 221. At this time, the roller body of the support roller 410 abuts against the upper plate surface of the support base 510, thereby fixing the lower end of the central column 500, so that the lower end of the central column 500 and the prefabricated steel support 200 form a stable whole, ensuring stable support for the central column 500.

[0053] In one embodiment, to achieve the connection between the central column 500 and the plug-in column 800 and to ensure the stability of the central column 500, the central column 500 includes two sets of channel steel plates. The two sets of channel steel plates are vertical and arranged with their bottoms touching. The plug-in column 800 is vertically provided with two sets of plug-in plates 810. The inner surfaces of the two sets of channel steel plates are provided with a first inclined surface, and the two sets of plug-in plates 810 are provided with a second inclined surface. The two sets of plug-in plates 810 are respectively inserted into the slots of the two sets of channel steel plates, with the first inclined surface abutting against the second inclined surface. The outer periphery of the two sets of channel steel plates is provided with a sleeve, and the lower end of the plug-in column 800 is inserted into the upper end of the sleeve.

[0054] In one embodiment, the central column 500 includes a sleeve, within which two sets of plug-in plates 810 are provided. The bottom plates of the two sets of plug-in plates 810 are fitted together, thereby forming a stable support for the sleeve and ensuring that the sleeve has great bending resistance. Furthermore, the upper end of the sleeve is plugged into the lower end of the plug-in column 800 as a whole, thereby ensuring that the central column 500 has excellent bending resistance when extended. The length of the central adjustable support tube 300 can be kept consistent with the length of the central column 500, thus forming a stable support for the stroke of the central column 500.

[0055] In one embodiment, two sets of steel crossbeams 600 are fixed vertically. The intermediate connecting body 700 includes an insertion connector 710 disposed at one end of the steel crossbeam 600. The insertion connector 710 is horizontal and inserted into the groove of the adjacent steel crossbeam 600. One end of the steel crossbeam 600 is also provided with an insertion crossbeam 720. Multiple sets of support rollers 721 are spaced apart on the insertion crossbeam 720. The multiple sets of support rollers 721 are engaged in the groove of the adjacent end of the steel crossbeam 600. One end of the steel crossbeam 600 is also provided with a guide slide rod 7. 30. The guide slide rod 730 is horizontal and parallel to the steel crossbeam 600. One end of the guide slide rod 730 is in sliding fit with one end of the adjacent steel crossbeam 600. A guide spring 731 is sleeved on the guide slide rod 730. The two ends of the guide spring 731 abut against the end faces of the two adjacent steel crossbeams 600 respectively. One end of the rigid rope 900 is connected to one end of the insertion crossbeam 720. The rigid rope 900 extends along the steel crossbeam 600 into the insertion column 800 and is connected to the upper end of the central adjusting support tube 300.

[0056] In one embodiment, adjacent steel beams 600 are slidably connected by a plug-in connector 710. The plug-in beam 720 and multiple sets of support rollers 721 enable the adjacent steel beams 600 to slide together, creating a telescopic relationship. A rigid rope 900 extends along the steel beams 600 into the plug-in column 800 and connects to the upper end of the central adjusting support tube 300. When the central adjusting support tube 300 is driven downwards by the assembly and adjustment equipment, it is rotated, causing the support roller 410 to abut against the second plane 222 and rotate from the second plane 222 to the first plane 221, thereby tightening the rigid rope 900.

[0057] In one embodiment, to connect the steel beam 600 to the upper end of the plug-in column 800, the upper end of the plug-in column 800 is provided with a receiving groove 820 for engaging one end of the steel beam 600. A first connecting plate 821 is provided on one side of the receiving groove 820. The first connecting plate 821 is provided with a groove for a rigid rope 900 to pass through. A second connecting plate 610 is provided at one end of the steel beam 600. An adjusting screw 620 is provided between the second connecting plate 610 and the first connecting plate 821.

[0058] In one embodiment, by rotating the adjusting screw 620, the second connecting plate 610 at one end of the steel beam 600 can be brought closer to the first connecting plate 821, thereby ensuring a reliable connection between the steel beam 600 and the upper end of the plug-in column 800.

[0059] The above embodiments are only used to illustrate the technical methods of the present invention and are not intended to limit it. Although the present invention has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical methods of the present invention without departing from the spirit and scope of the technical methods of the present invention.

Claims

1. A prefabricated steel structure central load-bearing column, characterized in that: include A concrete base (100) is provided with an installation groove (110). Precast steel supports (200) are provided in multiple sets within the mounting groove (110). The precast steel supports (200) are fastened to the inner wall of the mounting groove (110), and the multiple sets of precast steel supports (200) enclose a plug-in chamber. A central adjustment support tube (300) is disposed in the insertion chamber, and the outer wall of the central adjustment support tube (300) abuts against the insertion chamber; The central column (500) is located at the center of the central adjusting support tube (300), and its lower end is connected to the bottom of the mounting groove (110); A steel crossbeam (600) is horizontally positioned at the upper end of the central column (500), and multiple sets of the steel crossbeam (600) are spaced apart along the circumferential direction of the central column (500). An intermediate connector (700) is set at the connection end of an adjacent steel beam (600), and a rigid rope (900) extends from the intermediate connector (700). One end of the rigid rope (900) is connected to the upper end of a central adjusting support pipe (300). An adjusting mechanism adjusts the vertical lifting of the central adjusting support pipe (300) and tightens the rigid rope (900).

2. The prefabricated steel structure central load-bearing column according to claim 1, characterized in that: The outer wall of the central adjusting support pipe (300) is provided with a support body (400). The support body (400) is arranged along the circumferential direction of the outer wall of the central adjusting support pipe (300). One end of the support body (400) is connected to the outer wall of the central adjusting support pipe (300), and the other end of the support body (400) is connected to the precast steel support (200).

3. The prefabricated steel structure central load-bearing column according to claim 2, characterized in that: The upper end of the central column (500) and the lower end of the plug-in column (800) are plugged together, and the plug-in column (800) and the steel beam (600) are located at the upper end of the plug-in column (800).

4. The prefabricated steel structure central load-bearing column according to claim 3, characterized in that: The precast steel supports (200) are provided with a passage gap (210) between adjacent ones. The adjustment mechanism includes an adjustment arc surface (220) provided on the lower plate of the precast steel supports (200). The adjustment arc surface (220) includes a first plane (221) and a second plane (222). The first plane (221) is lower than the second plane (222). The first plane (221) and the second plane (222) are connected by an arc transition. One end of the support body (400) is provided with a support end, which abuts against the first plane (221) or the second plane (222).

5. The prefabricated steel structure central load-bearing column according to claim 4, characterized in that: The groove of the mounting cavity (110) is a circular structure with a narrow opening. The edge of the prefabricated steel support (200) is provided with a support platform. The support platform is in contact with the step of the inner wall of the groove of the mounting cavity (110). One end of the support body (400) is provided with a support roller (410). The support roller (410) is horizontal and arranged along the radial direction of the central adjusting support tube (300). The roller body of the support roller (410) abuts against the first plane (221) or the second plane (222). A support spring (310) is sleeved on the central adjusting support tube (300). The upper and lower ends of the support spring (310) abut against the outer wall of the central adjusting support tube (300) and the bottom of the groove of the mounting cavity (110), respectively.

6. The prefabricated steel structure central load-bearing column according to claim 5, characterized in that: The support roller (410) is rotatably mounted on the roller frame, which is installed on the support roller (420). The support roller (420) is sleeved outside the central adjusting support tube (300). The outer wall of the support roller (420) abuts against the inner wall of the precast steel support (200). A connecting slide rod (430) is vertically slidably mounted on the roller frame. The upper end of the connecting slide rod (430) is hinged to one end of the connecting arm (440) through a connecting seat. A sleeve is mounted on the connecting slide rod (430). A connecting spring (431) is connected to the connecting seat and the roller frame at its upper and lower ends respectively. The other end of the connecting arm (440) is hinged to the connecting slider (450). The hinge axes at both ends of the connecting arm (440) are horizontal and perpendicular to the axial direction of the supporting roller (420). The connecting slider (450) is slidably disposed in the slot on the outer wall of the central adjusting support tube (300). The slot is arranged along the length of the central adjusting support tube (300).

7. The prefabricated steel structure central load-bearing column according to claim 6, characterized in that: The lower end of the central column (500) is provided with a support base (510). When the support roller (410) abuts against the first plane (221), the roller body of the support roller (410) abuts against the upper plate surface of the support base (510).

8. The prefabricated steel structure central load-bearing column according to claim 7, characterized in that: The central column (500) includes two sets of channel steel plates, which are vertical and arranged with their bottoms touching. Two sets of plug-in plates (810) are vertically arranged on the plug-in column (800). The inner sides of the two sets of channel steel plates are provided with a first inclined surface, and the two sets of plug-in plates (810) are provided with a second inclined surface. The two sets of plug-in plates (810) are respectively inserted into the slots of the two sets of channel steel plates, and the first inclined surface abuts against the second inclined surface. A sleeve is provided around the two sets of channel steel plates, and the lower end of the plug-in column (800) is inserted into the upper end of the sleeve.

9. The prefabricated steel structure central load-bearing column according to claim 3, characterized in that: The steel crossbeam (600) has two sets of fixed vertically. The intermediate connecting body (700) includes a plug-in connecting body (710) at one end of the steel crossbeam (600). The plug-in connecting body (710) is horizontal and inserted into the groove of the adjacent steel crossbeam (600). One end of the steel crossbeam (600) is also provided with a plug-in crossbeam (720). Multiple sets of support rollers (721) are spaced apart on the plug-in crossbeam (720). The multiple sets of support rollers (721) are locked in the groove of the adjacent steel crossbeam (600). One end of the steel crossbeam (600) is also provided with a guide slide rod (730). The guide slide rod (730) is horizontal and parallel to the steel crossbeam (600). One end of the guide slide rod (730) is in sliding fit with one end of the adjacent steel crossbeam (600). A guide spring (731) is sleeved on the guide slide rod (730). The two ends of the guide spring (731) abut against the end faces of the two adjacent steel crossbeams (600). One end of the rigid rope (900) is connected to one end of the plug-in crossbeam (720). The rigid rope (900) extends along the steel crossbeam (600) into the plug-in column (800) and is connected to the upper end of the central adjusting support tube (300).

10. The prefabricated steel structure central load-bearing column according to claim 9, characterized in that: The upper end of the plug-in column (800) is provided with a receiving groove (820) for engaging one end of the steel beam (600). A first connecting plate (821) is provided on one side of the receiving groove (820). The first connecting plate (821) is provided with a groove for the rigid rope (900) to pass through. A second connecting plate (610) is provided at one end of the steel beam (600). An adjusting screw (620) is provided between the second connecting plate (610) and the first connecting plate (821).

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