Connecting device for steel column splicing and splicing joint thereof

Abstract

The utility model relates to the field of steel structure construction, in particular to a connecting device for splicing steel columns and a splicing node thereof, the connecting device comprises column hoop components respectively arranged on an upper steel column and a lower steel column, a split bolt component for fixing the column hoop components on the steel columns, and a plurality of connecting plates for connecting the two column hoop components; the column hoop assembly is composed of two C-shaped hoop plates which are symmetrically arranged, lug plates are arranged at the two ends and the middle of the column hoop assembly, and the lug plates at the two ends of the two hoop plates are tensioned through a plurality of fastening bolt assemblies. The two ends of the plurality of connecting plates are respectively fixed with the lug plates on the column hoop assembly through a plurality of fastening bolt assemblies; the at least two split bolt assemblies are arranged on the two sides of a middle lug plate of the column hoop assembly respectively, and screws of the split bolt assemblies penetrate through the column hoop assembly and the steel column; reinforcing sleeves are welded to the positions, located at the penetrating holes of the split bolt assemblies, of the steel column. The connecting device has the advantages of being convenient to assemble and disassemble and capable of being used repeatedly.

Description

TECHNICAL FIELD

[0001] The utility model relates to the field of steel structure construction, especially to a connecting device for steel column splicing and splicing joint thereof. BACKGROUND

[0002] In the fabricated steel structure engineering, when the steel columns are connected in the height direction, the ear plate splicing method is usually adopted, that is, ear plates are welded on the four surfaces of the upper and lower steel columns, then the upper and lower steel columns are fixedly connected through connecting plates and bolt assemblies, and after the steel columns are adjusted, the gap at the connecting position is welded. After the welding seam is passed, the connecting plate needs to be disassembled, and the ear plate welded on the steel column needs to be cut off. This operation method is troublesome, and the cut-off ear plate cannot be reused, causing waste.

[0003] A device for splicing box-type steel columns on site is disclosed in Chinese patent application No. CN202020342932.5 with a filing date of March 18, 2020, which uses a T-shaped plate to replace the ear plate, and the T-shaped plate is fixed on the steel column through multiple bolt assemblies, realizing the reuse of the T-shaped plate and the splicing plate. However, this splicing device has the following defects:

[0004] 1. A large number of installation holes need to be drilled on the steel column, which seriously affects the structural strength of the steel column and shortens the service life of the building.

[0005] 2. A part of the bolt is located inside the steel column, and the installation and disassembly of the bolt are difficult to operate.

[0006] Therefore, the present application provides a connecting device for steel column splicing with reasonable structure design, convenient installation and disassembly, and repeated use without affecting the structural strength of the steel column to solve the above problems. CONTENT OF THE UTILITY MODEL

[0007] The utility model aims at solving the technical problems existing in the prior art. Therefore, the utility model provides a connecting device for steel column splicing with reasonable structure design, convenient installation and disassembly, and repeated use without affecting the structural strength of the steel column.

[0008] The technical scheme adopted by the utility model to solve its technical problems is:

[0009] In the first aspect, a connecting device for splicing steel columns is provided, which is used for fixing the upper and lower steel columns when splicing, and comprises column hoop assemblies arranged on the upper and lower steel columns respectively, tensioning bolt assemblies for fixing the column hoop assemblies on the steel columns, and a plurality of connecting plates for connecting the two column hoop assemblies; the column hoop assembly is composed of two symmetrically arranged C-shaped hoop plates, and the two ends and the middle part of the column hoop assembly are provided with ear plates; the ear plates at the two ends of the two hoop plates are pulled tightly by a plurality of fastening bolt assemblies; the two ends of the plurality of connecting plates are fixed with the ear plates on the column hoop assemblies by a plurality of fastening bolt assemblies; at least two tensioning bolt assemblies are arranged on the two sides of the middle ear plate of the column hoop assembly, and the screw rods of the tensioning bolt assemblies penetrate the column hoop assembly and the steel column; a reinforcing sleeve is welded on the steel column at the position of the penetrating hole of the tensioning bolt assembly.

[0010] In some optional embodiments, the opposite outer sides of the ear plates at the two ends and the middle part of the column hoop assembly are provided with connecting plates.

[0011] In some optional embodiments, the tensioning bolt assemblies are provided with two, and the two tensioning bolt assemblies are arranged in a staggered manner.

[0012] In some optional embodiments, the tensioning bolt assemblies are provided with four or six in a rectangular array.

[0013] In some optional embodiments, a reinforcing screw rod is further included, which is used for disassembling the connecting device after the splicing of the steel column is completed and is screwed with the reinforcing sleeve.

[0014] In the second aspect, a steel column splicing joint is provided, and the upper and lower steel columns are fixed by using the connecting device.

[0015] In some optional embodiments, a positioning inner core pipe is welded on the inner side of the splicing end of the lower steel column, and a guide inclined surface is arranged on the top of the positioning inner core pipe.

[0016] Compared with the prior art, the connecting device has the following advantages:

[0017] The connecting device is fixed on the steel column by using the tensioning bolt assemblies, has the advantages of convenient assembly and disassembly and reusability, the mounting holes on the steel column can be plugged by the reinforcing sleeve and the reinforcing screw rod, and the problem of affecting the structural strength of the steel column caused by drilling holes on the steel column is solved. BRIEF DESCRIPTION OF DRAWINGS

[0018] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following will briefly introduce the drawings needed in the embodiment description. Obviously, the drawings in the following description are only some embodiments of the present application, and for those skilled in the art, other drawings can also be obtained from these drawings without creative labor, wherein:

[0019] Figure 1 is the installation schematic view of the connecting device for steel column splicing provided by the utility model at the steel column splicing joint;

[0020] Figure 2 is Figure 1 the provided top view;

[0021] Figure 3 is the installation structure diagram of the reinforcing sleeve on the steel column provided by the utility model;

[0022] Figure 4 is Figure 3 the provided sectional view;

[0023] Figure 5 is the sectional view after the steel column splicing provided by the utility model is completed.

[0024] In the drawings, the component list represented by each sign is as follows:

[0025] 1 - upper steel column, 2 - lower steel column, 3 - column hoop assembly, 3.1 - hoop plate, 3.2 - ear plate, 4 - pair of pull bolt assemblies, 5 - connecting plate, 6 - fastening bolt assembly, 7 - reinforcing sleeve, 8 - reinforcing screw, 9 - positioning inner core pipe. DETAILED DESCRIPTION

[0026] It should be understood that the specific embodiments described herein are merely used to explain the utility model, and are not used to limit the utility model.

[0027] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only a part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the utility model.

[0028] In the description of the utility model, it is necessary to explain that the orientation or positional relation indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer" and the like is the orientation or positional relation based on the orientation or positional relation shown in the drawings, and is only for the convenience of describing the utility model and simplifying the description, and therefore cannot be understood as a limitation on the utility model; the terms "mounting", "connecting" and "connection" should be understood in a broad sense, for example, can be fixed connection, can be detachable connection, or integral connection; can be mechanical connection, or electrical connection; can be direct connection, or indirect connection through an intermediate medium, or internal communication of two elements. For ordinary skilled persons in the art, the specific meanings of the above terms in the utility model can be understood according to the specific circumstances.

[0029] In addition, the technical solutions of each embodiment can be combined with each other, but it must be based on the fact that the ordinary skilled person in the art can realize it, and when the combination of technical solutions appears contradictory or unachievable, it should be considered that the combination of technical solutions does not exist, and is not within the protection scope required by the utility model.

[0030] Embodiment one

[0031] As shown in the accompanying Figure 1 and the accompanying Figure 2 , the embodiment provides a connecting device for splicing steel columns, which is used for fixing when splicing two steel columns, and comprises column hoop assemblies 3 arranged on the upper steel column 1 and the lower steel column 2 respectively, a tension bolt assembly 4 for fixing the column hoop assemblies 3 on the steel columns, and a plurality of connecting plates 5 for connecting the two column hoop assemblies 3, wherein:

[0032] The column hoop assembly 3 is composed of two symmetrically arranged hoop plates 3.1 in the shape of "C", and the shape of the space enclosed by the two hoop plates 3.1 is matched according to the cross-sectional shape of the steel column, for example, when the steel column is round steel, the shape of the space enclosed by the two hoop plates is circular, and when the steel column is square steel, the shape of the space enclosed by the two hoop plates is rectangular. In order to facilitate the connection of the upper and lower column hoop assemblies, the embodiment is provided with ear plates 3.2 at both ends and the middle of the hoop plate 3.1, as shown in the accompanying Figure 1 and the accompanying Figure 2 , the ear plates at both ends of the hoop plate are arranged perpendicularly to the middle ear plate, and are arranged perpendicularly to the surface of the steel column, wherein the ear plates at both ends of the hoop plate are pulled tight by a plurality of fastening bolt assemblies 6, so as to realize the clamping of the steel column by the column hoop assembly 3. Preferably, the ear plates at both ends of the two hoop plates do not contact after being pulled tight by the fastening bolt assembly, so as to ensure that the inner wall of the hoop plate contacts the surface of the steel column, thereby clamping the steel column.

[0033] In order to ensure the stability and reliability of the column hoop assembly on the steel column, at least two opposite pull bolt assemblies 4 are arranged on both sides of the middle ear plate 3.2 of the column hoop assembly 3, and the screw rod penetrates the column hoop assembly and the steel column. In this embodiment, the opposite pull bolt assembly fixes the column hoop assembly, and the head of the nut or screw rod is located on the outside of the steel column, which is convenient for installation and removal. In one embodiment, as shown in the accompanying Figure 1 two opposite pull bolt assemblies 4 are arranged in an upper and lower staggered manner, and the advantage of this mode is that the steel column has fewer openings. In another embodiment, the opposite pull bolt assembly 4 is arranged in a rectangular array of four or six, and this mode has a reliable structure, but the steel column has more openings.

[0034] In order to increase the structural strength of the opening of the steel column, as shown in the accompanying Figure 2 to the accompanying Figure 4 In this embodiment, a reinforcing sleeve 7 is welded on the steel column at the opening of the opposite pull bolt assembly 4.

[0035] After the column hoop assembly 3 is installed on the upper and lower steel columns, as shown in the accompanying Figure 1 the two ends of the connecting plate 5 are fixed to the ear plate 3.2 on the column hoop assembly 3 through a plurality of fastening bolt assemblies 6. Preferably, the opposite outer sides of the ear plate 3.2 on both sides and both ends of the middle ear plate 3.2 of the column hoop assembly 3 are provided with the connecting plate 6.

[0036] Embodiment two

[0037] Based on embodiment one, this embodiment also designs a reinforcing screw 8, as shown in the accompanying Figure 5 the reinforcing screw 8 is used to remove the connecting device after the steel column is completed, and is screwed with the reinforcing sleeve 7. Through the joint action of the reinforcing sleeve and the reinforcing screw, this embodiment effectively solves the problem of affecting the structural strength of the steel column caused by drilling holes on the steel column.

[0038] Embodiment three

[0039] This embodiment provides a steel column splicing joint, as shown in the accompanying Figure 1 the connecting device described in embodiment one is used to fix the upper steel column 1 and the lower steel column 2.

[0040] Preferably, the inner side of the splicing end of the lower steel column 2 is welded with a positioning inner core pipe 9, and the top of the positioning inner core pipe 9 is provided with a guide slope. This embodiment guides the splicing of the upper steel column through the positioning inner core pipe, reduces the docking difficulty, and improves the docking accuracy.

[0041] After the steel column is welded, the weld is inspected, and after meeting the requirements, the connecting device is removed, and finally the reinforcing screw 8 is screwed into the reinforcing sleeve 7.

[0042] The above merely illustrates the embodiments of the present application, and does not limit the patent scope of the present application, and any equivalent structure or equivalent process transformation, or direct or indirect application in other related technical fields, are all included in the patent protection scope of the present application.

Claims

1. A connecting device for splicing steel columns, used to fix two steel columns when splicing them; characterized in that: It includes column hoop assemblies respectively installed on the upper and lower steel columns, tie bolt assemblies for fixing the column hoop assemblies to the steel columns, and multiple connecting plates connecting the two column hoop assemblies; The column hoop assembly consists of two symmetrically arranged "C"-shaped hoop plates, with ear plates at both ends and the middle. The ear plates at both ends of the two hoop plates are tightened by a multi-fastening bolt assembly. The two ends of the multiple connecting plates are respectively fixed to the ear plates on the column hoop assembly by multiple fastening bolt assemblies; At least two tie bolt assemblies are located on both sides of the middle lug of the column hoop assembly, with their bolts penetrating the column hoop assembly and the steel column; A reinforcing sleeve is welded to the steel column at the through hole of the tie bolt assembly.

2. The connecting device for splicing steel columns according to claim 1, characterized in that: Connecting plates are provided on both sides of the middle ear plate and on the opposite outer sides of the ear plates at both ends of the column hoop assembly.

3. The connecting device for splicing steel columns according to claim 1, characterized in that: There are two tie bolt assemblies, which are staggered vertically.

4. The connecting device for splicing steel columns according to claim 1, characterized in that: The tie bolt assembly has four or six bolts arranged in a rectangular array.

5. The connecting device for splicing steel columns according to claim 1, characterized in that: It also includes reinforcing bolts, which are used to remove the connecting device after the steel column is welded and to be screwed to the reinforcing sleeve.

6. A steel column splicing joint, characterized in that: The upper steel column and the lower steel column are fixed by the connecting device described in any one of claims 1 to 4.

7. The steel column splicing node according to claim 6, characterized in that: The inner side of the splicing end of the lower steel column is welded with a positioning inner core tube, and the top of the positioning inner core tube is provided with a guide slope.

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