Super-long assembled steel member and connecting method

Abstract

The invention discloses a super-long assembled steel member and a connecting method, the super-long assembled steel member comprises a first steel member, a second steel member and a chock plug, a first clamping piece is welded in the first steel member, a second clamping piece is welded in the second steel member, the outer diameter of the middle section of the chock plug is slightly smaller than the inner diameter of the first steel member and the inner diameter of the second steel member, and the outer diameter of the middle section of the chock plug is smaller than the inner diameter of the second steel member. The outer diameters of the two ends of the chock plug are gradually reduced from the middle to the outer side; one end of the chock plug is clamped in the first clamping piece, the other end of the chock plug is clamped in the second clamping piece, and the middle part of the chock plug is just clamped in the first steel member and the second steel member, so that the end parts of the first steel member and the second steel member are in contact and are welded together with the chock plug.

Description

Technical Field

[0001] The invention relates to the technical field of building engineering, and in particular to a welding joint of a box-type or steel tube-type cross-section steel member and a connection method. Background Art

[0002] The statements herein merely provide background information related to the present invention and do not necessarily constitute prior art.

[0003] When the super-long and complex steel structure is completed in the prefabrication workshop and transported to the site, it needs to be disassembled into several smaller sections (usually less than 12m in length) for the convenience of transportation and hoisting. After being transported to the site, it is hoisted onto a temporary support and welded to form the overall structure. The temporary support is then removed to form the final structure. However, when the steel components are spliced ​​on site, high-altitude work makes it difficult to align the components accurately, and it is also difficult to correct deviations. The temperature stress generated during the welding process can also cause the aligned steel components to shift again.

[0004] In the prior art, in order to achieve the connection between two steel components, joints are often used for connection, for example, see patents CN202311095582.1, CN202320982245.3, etc. However, in the actual construction process, it is sometimes necessary to directly weld the upper and lower steel structures, and no joints can appear on the outer surface. On the other hand, when joint welding is used, the implementation is relatively cumbersome. It is necessary to first connect the joint to the first steel structure, and then connect the second steel structure to the joint. If the connection process is welding, two welds need to be welded. If the connection process is bolt connection, multiple bolts need to be installed. Summary of the invention

[0005] In view of the deficiencies in the prior art, the purpose of the present invention is to provide a method for accurately assembling ultra-long steel members with hollow box-shaped or steel tube-shaped cross-sections, which has the advantages of fast construction speed and reliable quality.

[0006] In order to achieve the above object, the present invention adopts the following technical solutions:

[0007] In the first aspect, the present invention discloses an extra-long assembled steel component, comprising a first steel component, a second steel component and a plug, wherein a first clamp is welded inside the first steel component, and a second clamp is welded inside the second steel component, and the outer diameter of the middle section of the plug is slightly smaller than the inner diameter of the first steel component and the second steel component, and the outer diameter of both ends gradually tapers outward; one end of the plug is clamped in the first clamp, and the other end is clamped in the second clamp, and the middle part is just clamped in the first steel component and the second steel component, so that the ends of the first steel component and the second steel component are in contact and welded together.

[0008] As a further technical solution, the first steel member and the second steel member are box-section steel members, and the plug has a square section.

[0009] As a further technical solution, the first steel member and the second steel member are circular cross-section steel members, and the plug has a circular cross-section.

[0010] As a further technical solution, the first clamping plate and the second clamping plate are steel bar frames.

[0011] As a further technical solution, the first clamping plate and the second clamping plate are steel plates.

[0012] As a further technical solution, first clamps are welded inside both ends of the first steel member; and second clamps are welded inside both ends of the second steel member.

[0013] As a further technical solution, one end of the plug abuts against the first clamping member, and the other end abuts against the second clamping member.

[0014] As a further technical solution, the length of the middle section of the plug is twice the outer diameter of the first steel component or the second steel component, and the length of both ends of the plug is once the outer diameter of the first steel component or the second steel component.

[0015] In a second aspect, the present invention further provides a connection method based on the above-mentioned super-long assembled steel member, which is specifically as follows:

[0016] Step 1: making a connecting plug, a first clamping plate, and a second clamping plate;

[0017] Step 2: Welding the first clamping plate and the second clamping plate respectively on the first steel member and the second steel member to be connected;

[0018] Step 3: Place the joint end of the first steel member to be extended on one side on a temporary bracket; insert one end of the plug into the joint cavity of the first steel member until it touches or is clamped on the first clamping plate, and then insert the plug into the joint cavity portion of the second steel member to be extended on the other side until the joints of the first box-section steel member and the second box-section steel member to be connected are closed, and the square-section plug is completely immersed in the first box-section steel member and the second box-section steel member;

[0019] Step 4: After the first steel member and the second steel member are calibrated, the first steel member and the second steel member are welded at the plug to form a whole.

[0020] The beneficial effects of the present invention are as follows:

[0021] The present invention uses the plug as a tool for temporary fixation and preliminary correction of the steel components on both sides, which greatly reduces the workload of high-altitude positioning and temporary fixation, improves work efficiency and the construction accuracy of the component axis, ensures the quality of the project, and limits the position of the plug inside the steel component by the first clamp and the second clamp, and then connects the two steel components together by one welding to form a whole, realizing the rapid welding of the super-long assembled steel components, and omitting one step of welding in the process. In addition, the plug of the present invention is inside the connection position of the steel structure, and the plug can also be used as a welding plate during welding to prevent the loss of weld metal and ensure the quality of the weld. In addition, since the connection position of the two steel components has a plug, the strength of the connection position is also increased to a certain extent. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] The accompanying drawings in the specification, which constitute a part of the present invention, are used to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute improper limitations on the present invention.

[0023] Figure 1 is a schematic diagram of two box-section steel members that need to be welded together in Example 1;

[0024] Figure 2 This is a schematic diagram of welding a positioning clamp in a box-section steel member in Example 1;

[0025] Figure 3 is a schematic diagram of a square cross-section plug in Example 1;

[0026] Figure 4 is a schematic diagram of Example 1 before the square-section plug is inserted into two sections of box-section steel members;

[0027] Figure 5 This is a schematic diagram of the square-section plug inserted into two sections of box-section steel members in Example 1;

[0028] Figure 6 It is a schematic diagram of the welding connection of two sections of box-section steel members in Example 1;

[0029] Figure 7 is a schematic diagram of two steel pipe components that need to be welded together in Example 2;

[0030] Figure 8 This is a schematic diagram of welding a positioning clamp in a steel pipe member in Example 2;

[0031] Fig. 9 is a schematic diagram of a circular cross-section plug in Example 2;

[0032] Fig.10 is a schematic diagram of Example 2 before the round plug is inserted into two sections of steel pipe components;

[0033] Fig.11 This is a schematic diagram of the round plug inserted into two sections of steel pipe components in Example 2;

[0034] Fig.12 This is a schematic diagram of the welding connection of two sections of steel pipe components in Example 2;

[0035] Among them, 1-1. box-section steel member, 1-2 box-section steel member, 2-1. first clamp, 2-2. first clamp, 3. square-section plug, 4. box-section steel member connecting weld, 5-1. circular steel pipe member, 5-2. circular steel pipe member, 6-1. first clamp, 6-2. second clamp, 7. circular-section plug, 8. steel pipe member connecting weld. DETAILED DESCRIPTION

[0036] It should be noted that the following detailed descriptions are illustrative and intended to provide further explanation of the present invention. Unless otherwise specified, all technical and scientific terms used in the present invention have the same meanings as those commonly understood by those skilled in the art to which the present invention belongs.

[0037] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present invention. As used herein, unless otherwise explicitly stated in the present invention, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "include" and / or "include" are used in this specification, it indicates the presence of features, steps, operations, devices, components and / or combinations thereof;

[0038] For the convenience of description, if the words "upper" and "lower" appear in the present invention, it only means that the upper and lower directions are consistent with the drawings themselves, and do not limit the structure. It is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or component referred to must have a specific orientation, be constructed and operate in a specific orientation. Therefore, it cannot be understood as a limitation on the present invention.

[0039] As introduced in the background technology, there are deficiencies in the prior art. In order to solve the above technical problems, the present invention proposes two super-long assembled steel components and connection methods.

[0040] Example 1

[0041] In a typical embodiment of the present invention, Figure 1 As shown, this embodiment discloses an extra-long assembled steel member, and the two members to be welded are box-section steel members, such as Figure 1 As shown, in Figure 1 Two first box-section steel members 1-1 and second box-section steel members 1-2 to be welded are provided; Figure 1 In the welding between the two box-section steel members, a clamping plate 2 is welded inside each box-section steel member, as shown in FIG. Figure 2 As shown, a first clamping plate 2-1 is welded in the first box-section steel member 1-1, and a second clamping plate 2-2 is welded in the second box-section steel member 1-2; then a square-section plug 3 is designed, such as Figure 3 As shown, the outer diameter of the middle section of the square section plug 3 is slightly smaller than the inner diameter of the corresponding box section steel member 1 to be connected, and the outer diameters of the two ends of the square section plug 3 gradually become thinner toward the outside; so as to facilitate the insertion of the square section plug 3 into the first box section steel member 1-1 and the second box section steel member 1-2 to be connected. When the square section plug 3 is installed in the first box section steel member 1-1 and the second box section steel member 1-2, one end of the square section plug 3 is clamped in the first clamping plate 2-1 in the first box section steel member 1-1, and the other end is clamped in the second clamping plate 2-2 in the second box section steel member 1-2; then the middle part is located in the first box section steel member 1-1 and the second box section steel member 1-2, and the first box section steel member 1-1 and the second box section steel member 1-2 are welded together to form a whole, see for details. Figure 5 , Figure 6 ;

[0042] Furthermore, the above-mentioned first clamping plate 2-1 and second clamping plate 2-2 can be a rectangular frame welded by thick steel bars, or a rectangular steel plate, which is fixed inside the box-section steel member by spot welding. When a rectangular frame is used, the lengths of the two ends of the square-section plug 3 can be designed to be longer, so that the ends of the square-section plug 3 can be clamped in the first clamping plate 2-1 and the second clamping plate 2-2. When a rectangular steel plate is used, the lengths of the two ends of the square-section plug 3 can be designed to be shorter, so that the ends of the square-section plug 3 can be in contact with the steel plate.

[0043] Furthermore, the length of the middle section of the square section plug 3 is generally set to 2 times the outer diameter of the component to be connected, and the length of the two sections of the plug is generally set to 1 times the outer diameter of the component to be connected. The overall length of the square section plug 3 is slightly larger than the sum of the length from the first clamping plate 2-1 to the joint end of the first box section steel member 1-1 and the length from the second clamping plate 2-2 to the joint end of the second box section steel member 1-2, mainly to reserve a certain space for the weld at the welding position of the first box section steel member 1-1 and the second box section steel member 1-2.

[0044] To ensure that the plug 3 can be close to the central position of the connection node during installation, a second clamp 2-2 or a first clamp 2-1 is welded in the hollow box-section steel member to be connected; the distance between the first clamp 2-1 and the second clamp 2-2 at the joint is slightly greater than 2 times the outer diameter of the steel member to be connected.

[0045] The specific welding method is as follows:

[0046] First, a square-section plug 3, a second clamping plate 2-2, and a first clamping plate 2-1 for connection are manufactured;

[0047] Secondly, the first clamping plate 2-1 and the second clamping plate 2-2 are welded inside the ends of the first box-section steel member 1-1 and the second box-section steel member 1-2 to be connected; since the first clamping plate 2-1 and the second clamping plate 2-2 do not need to bear too much force, they are only used to cooperate with the plug to achieve the positioning of the plug, therefore, the first clamping plate 2-1 and the second clamping plate 2-2 and the first box-section steel member 1-1 and the second box-section steel member 1-2 can be welded by electric welding, and they need to be integrally formed with the first box-section steel member 1-1 and the second box-section steel member 1-2;

[0048] Once again, the components are connected. First, the joint end of the first box-section steel component 1-1 that needs to be extended on one side is placed on a temporary bracket; one end of the square-section plug 3 is inserted into the joint cavity of the first box-section steel component 1-1 until it touches the first clamping plate 2-1, and then the joint cavity part of the second box-section steel component 1-2 that needs to be extended on the other side is inserted into the square-section plug 3 until the joints of the first box-section steel component 1-1 and the second box-section steel component 1-2 that need to be connected are closed, and the square-section plug 3 is completely immersed in the first box-section steel component 1-1 and the second box-section steel component 1-2.

[0049] Finally, after the first box-section steel member 1-1 and the second box-section steel member 1-2 are corrected, they are welded at the square section plug 3 to form a whole. During the welding process, since the plug is inside the connection position of the steel structure, the plug can also be used as a welding plate to prevent the loss of weld metal and ensure the quality of the weld.

[0050] The present embodiment utilizes the square-section plug 3 as a tool for temporary fixation and preliminary correction of the first box-section steel members 1-1 and the second box-section steel members 1-2 on both sides, which greatly reduces the workload of high-altitude positioning and temporary fixation, improves work efficiency and the construction accuracy of the member axis, and ensures the quality of the project. That is, the plug of the present application has multiple main functions. One is to temporarily fix the two first box-section steel members 1-1 and the second box-section steel members 1-2 to be connected, and the other is to correct the first box-section steel member 1-1 and the second box-section steel member 1-2, so that the first box-section steel member 1-1 and the second box-section steel member 1-2 can be quickly aligned. At the same time, the square-section plug 3 of the present invention is inside the connection position of the steel structure, and the plug can also be used as a welding plate during welding to prevent the loss of weld metal and ensure the quality of the weld.

[0051] Furthermore, if the first steel component needs to be connected to the third steel component, first clamps are welded inside both ends of the first steel component; if the second steel component needs to be connected to the fourth steel component, second clamps are welded inside both ends of the second steel component.

[0052] Example 2

[0053] In a typical embodiment of the present invention, Figure 7 As shown, this embodiment discloses an extra-long assembled steel member, wherein the two members to be welded are steel members with circular cross-sections, such as Figure 6 As shown, in Figure 6 Two first circular section steel members 5-1 and second box section steel members 5-2 to be welded are provided; Figure 1 In the welding between two box-section steel members, a clamp is welded inside each box-section steel member. Figure 7 , Figure 8 As shown, a first clamping plate 6-1 is welded in the first circular cross-section steel member 5-1, and a second clamping plate 6-2 is welded in the second circular cross-section steel member 5-2; then a circular cross-section plug 7 is designed, such as Fig. 9As shown, the outer diameter of the middle section of the circular cross-section plug 7 is slightly smaller than the inner diameter of the corresponding box-section steel member 1 to be connected, and the outer diameters of the two ends of the circular cross-section plug 7 gradually become thinner toward the outside; so as to facilitate the circular cross-section plug 7 to be inserted into the first circular cross-section steel member 5-1 and the second circular cross-section steel member 5-2 to be connected. When the circular cross-section plug 7 is installed in the first circular cross-section steel member 5-1 and the second circular cross-section steel member 5-2, one end thereof is clamped in the first clamping plate 6-1 in the first circular cross-section steel member 5-1, and the other end is clamped in the second clamping plate 6-2 in the second circular cross-section steel member 5-2; then the middle part is located in the first circular cross-section steel member 5-1 and the second circular cross-section steel member 5-2, and the middle part is welded together with the first circular cross-section steel member 5-1 and the second circular cross-section steel member 5-2, and the three form a whole, see details. Fig.11 , Fig.12 ;

[0054] Furthermore, the first clamping plate 6-1 and the second clamping plate 6-2 can be rectangular frames welded by thick steel bars, or rectangular steel plates, fixed inside the first circular cross-section steel member 5-1 and the second circular cross-section steel member 5-2 by spot welding. When a rectangular frame is used, the lengths of both ends of the circular cross-section plug 7 can be designed to be longer, so that the ends of the circular cross-section plug 7 can be clamped in the first clamping plate 6-1 and the second clamping plate 6-2. When a rectangular steel plate is used, the lengths of both ends of the circular cross-section plug 7 can be designed to be shorter, so that the ends of the circular cross-section plug 7 can be in contact with the steel plate.

[0055] Furthermore, the length of the middle section of the circular cross-section plug 7 is generally set to twice the outer diameter of the component to be connected, and the length of the two sections of the plug is generally set to once the outer diameter of the component to be connected.

[0056] To ensure that the plug can be close to the center of the connection node during installation, the second clamp plate 6-2 and the first clamp plate 6-1 are welded in the hollow box-type or steel tube-section steel member to be connected; the distance between the first clamp plate 6-1 and the second clamp plate 6-2 at the joint is slightly greater than 2 times the outer diameter of the member to be connected.

[0057] The specific welding method is as follows:

[0058] First, a connecting circular cross-section plug 7, a second clamping plate 6-2, and a first clamping plate 6-1 are manufactured;

[0059] Secondly, the first clamping plate 6-1 and the second clamping plate 6-2 are welded to the first circular cross-section steel member 5-1 and the second circular cross-section steel member 5-2 to be connected;

[0060] Once again, connect the components. First, place the joint end of the first circular section steel component 5-1 that needs to be extended on one side on a temporary bracket; insert one end of the circular section plug 7 into the joint cavity of the first circular section steel component 5-1 until it touches the first clamping plate 6-1, and then insert the joint cavity part of the second circular section steel component 5-2 that needs to be extended on the other side into the circular section plug 7 until the joints of the first circular section steel component 5-1 and the second circular section steel component 5-2 that need to be connected are closed, and the circular section plug 7 is completely immersed in the first circular section steel component 5-1 and the second circular section steel component 5-2.

[0061] Finally, after the first circular cross-section steel member 5-1 and the second circular cross-section steel member 5-2 are corrected, they are welded outside the circular cross-section plug 7 to form a whole. During the welding process, since the plug is inside the connection position of the steel structure, the plug can be used as a welding plate to prevent the loss of weld metal and ensure the quality of the weld.

[0062] Furthermore, if it is necessary to connect the first circular cross-section steel member 5-1 with the third circular cross-section steel member, a first clamp is welded inside both ends of the first circular cross-section steel member 5-1; if it is necessary to connect the second circular cross-section steel member 5-2 with the fourth circular cross-section steel member, a second clamp is welded inside both ends of the second circular cross-section steel member 5-2.

[0063] This embodiment utilizes a plug as a tool for temporary fixation and preliminary correction of the steel components on both sides, which greatly reduces the workload of high-altitude positioning and temporary fixation, improves work efficiency and the construction accuracy of the component axis, and ensures the quality of the project. That is, the plug of this application has multiple main functions. One is to temporarily fix two steel components to be connected, and the other is to correct the steel components so that the first steel component and the second steel component can be quickly aligned. At the same time, the plug of the present invention is inside the connection position of the steel structure, and the plug can also be used as a welding plate during welding to prevent the loss of weld metal and ensure the quality of the weld.

[0064] The outer surface of the steel pipe obtained by the connection method disclosed in the above two embodiments will not expose the joints, and only the welds connecting the steel pipes can meet the needs of certain scenarios.

[0065] Finally, it should be noted that relational terms such as first and second are merely used to distinguish one entity or operation from another entity or operation, but do not necessarily require or imply any actual relationship or order between these entities or operations.

[0066] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. An extra-long assembled steel member, characterized in that: The invention comprises a first steel component, a second steel component and a plug, wherein a first clamp is welded inside the first steel component, and a second clamp is welded inside the second steel component, the outer diameter of the middle section of the plug is slightly smaller than the inner diameter of the first steel component and the second steel component, and the outer diameters of both ends of the plug gradually decrease from the middle to the outside; one end of the plug is clamped in the first clamp, and the other end is clamped in the second clamp, and the middle part is just clamped in the first steel component and the second steel component, so that the ends of the first steel component and the second steel component are in contact and welded together.

2. The extra-long assembled steel member according to claim 1, characterized in that: The first steel member and the second steel member are box-section steel members, and the plug has a square section.

3. The extra-long assembled steel member according to claim 1, characterized in that: The first steel member and the second steel member are circular cross-section steel members, and the plug has a circular cross-section.

4. The extra-long assembled steel member according to claim 1, characterized in that: The first clamping plate and the second clamping plate are steel bar frames.

5. The extra-long assembled steel member according to claim 1, characterized in that: The first clamping plate and the second clamping plate are steel plates.

6. The extra-long assembled steel member according to claim 5, characterized in that: One end of the plug abuts against the first clamping member, and the other end abuts against the second clamping member.

7. The extra-long assembled steel member according to claim 1, characterized in that: The length of the middle section of the plug is twice the outer diameter of the first steel component or the second steel component, and the length of both ends of the plug is once the outer diameter of the first steel component or the second steel component.

8. The extra-long assembled steel member according to claim 1, characterized in that: First clamps are welded inside both ends of the first steel component; second clamps are welded inside both ends of the second steel component.

9. The method for connecting super-long assembled steel members according to any one of claims 1 to 8, characterized in that: as follows: Step 1: making a connecting plug, a first clamping plate, and a second clamping plate; Step 2: Welding the first clamping plate and the second clamping plate respectively on the first steel member and the second steel member to be connected; Step 3: Place the joint end of the first steel member to be extended on one side on a temporary bracket; insert one end of the plug into the joint cavity of the first steel member until it touches or is clamped on the first clamping plate, and then insert the plug into the joint cavity portion of the second steel member to be extended on the other side until the joints of the first box-section steel member and the second box-section steel member to be connected are closed, and the square-section plug is completely immersed in the first box-section steel member and the second box-section steel member; Step 4: After the first steel member and the second steel member are calibrated, the first steel member and the second steel member are welded at the plug to form a whole.

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