Method for manufacturing a steel joint

Abstract

The application discloses a steel joint manufacturing method and a steel joint. The manufacturing method comprises the following steps: providing a first base plate, a second base plate, a first web plate and a main web plate, welding the first web plate between the first base plate and the second base plate, and welding the main web plate between the first base plate and the second base plate to obtain a first box body; providing a third base plate, a fourth base plate and a second web plate, welding the second web plate between the third base plate and the fourth base plate to obtain a second box body; and welding the first box body and the second box body, and welding the main web plate between the third base plate and the fourth base plate. The split step can split the internal welding space of the steel joint, and the split box structure can reduce the welding difficulty. The steel joint manufacturing method can reasonably split the overall structure of the steel joint, split the internal space of the steel joint, facilitate the internal welding operation of the steel joint, and improve the welding quality.

Description

Technical Field

[0001] This invention relates to the field of steel structure joint technology, and in particular to a method for manufacturing a steel joint and the steel joint itself. Background Technology

[0002] With the rapid development of the construction industry, a large number of construction projects have emerged in China. Many of these projects utilize steel joints and truss structures. As buildings become increasingly large-scale and their designs more innovative, the resulting steel joint structures are becoming more complex, and the requirements for their strength are also increasing.

[0003] Many existing buildings utilize steel trusses for their cantilevered sections, especially those with large cantilever spans. To ensure structural stability, specific steel node structures are often employed. These may involve large, complex node structures. Such steel node structures are characterized by their large size, limited internal welding space, and stringent welding quality requirements. The conventional manufacturing method for these nodes involves cutting large node plates as a single piece. This method tends to result in deep internal spaces within the node, restricting welding space and hindering welding operations. Therefore, the characteristics of these steel node structures make welding difficult and prone to quality issues. Summary of the Invention

[0004] The main objective of this invention is to propose a method for manufacturing a steel node and the steel node itself. The method for manufacturing the steel node can reasonably disassemble the overall structure of the steel node, thereby disassembling the internal space of the steel node, which facilitates the internal welding operation of the steel node and is beneficial to improving the welding quality.

[0005] To achieve the above objectives, the embodiments of the present invention adopt the following technical solutions: A method for manufacturing a steel node, comprising: A first substrate, a second substrate, a first web plate, and a main web plate are provided. The first web plate is welded between the first substrate and the second substrate, and the main web plate is welded between the first substrate and the second substrate to obtain a first housing. The first substrate and the second substrate are arranged opposite to each other, and the main web plate extends along a first direction. A third substrate, a fourth substrate, and a second web are provided, and the second web is welded between the third substrate and the fourth substrate to obtain a second housing; wherein the third substrate and the fourth substrate are arranged opposite to each other. The first box is welded to the second box, and the main web is welded between the third substrate and the fourth substrate.

[0006] In some embodiments, the main web includes a first wall and a second wall arranged in parallel opposite directions, a first substrate is welded to the first wall, and a third substrate is welded to the second wall. After welding the first housing to the second housing and welding the main web plate between the third substrate and the fourth substrate, the manufacturing method further includes: A fifth substrate, a sixth substrate, and a third web are provided, and the third web is welded between the fifth substrate and the sixth substrate to obtain a third housing; wherein the fifth substrate and the sixth substrate are arranged opposite to each other. A seventh substrate, an eighth substrate, and a fourth web are provided, and the fourth web is welded between the seventh substrate and the eighth substrate to obtain a fourth housing; wherein the seventh substrate and the eighth substrate are arranged opposite to each other. Weld the third box to the fourth box, weld the third box to the first wall, and weld the fourth box to the second wall; The main web plate is welded between the fifth substrate and the sixth substrate, and also between the seventh substrate and the eighth substrate.

[0007] In some embodiments, the main web includes a first wall and a second wall arranged in parallel opposite directions, and the first substrate and the third substrate are both welded to the first wall. After welding the first housing to the second housing and welding the main web plate between the third substrate and the fourth substrate, the manufacturing method further includes: A fifth substrate, a sixth substrate, and a third web are provided, and the third web is welded between the fifth substrate and the sixth substrate to obtain a third housing; wherein the fifth substrate and the sixth substrate are arranged opposite to each other. A seventh substrate, an eighth substrate, and a fourth web are provided, and the fourth web is welded between the seventh substrate and the eighth substrate to obtain a fourth housing; wherein the seventh substrate and the eighth substrate are arranged opposite to each other. The third and fourth boxes are welded together, and both the third and fourth boxes are welded to the second wall surface; wherein, the main web plate is welded between the fifth and sixth substrates, and between the seventh and eighth substrates.

[0008] In some embodiments, when viewed along a first direction, a first substrate, a third substrate, and a main web plate together define a first groove, and a second substrate, a fourth substrate, and a main web plate together define a second groove, with both the first groove and the second groove extending along the first direction.

[0009] In some embodiments, when viewed along a first direction, a first substrate has a first end and a second substrate has a second end. Along the first direction, the first end is located on the side of the first substrate closer to the second substrate, and the second end is located on the side of the second substrate closer to the first substrate. The main web is simultaneously welded to both the first end and the second end.

[0010] In some embodiments, the first base plate, the third base plate, the fifth base plate and the seventh base plate collectively define an integral wall surface; Before the step of welding the first box body and the second box body, and welding the main web plate between the third base plate and the fourth base plate, the manufacturing method further comprises: providing a flange plate, and welding the flange plate to the integral wall surface; providing a patch plate, and after the step of welding the flange plate to the integral wall surface, welding the patch plate to the integral wall surface.

[0011] In some embodiments, before the step of providing the first base plate, the second base plate, the first web plate and the main web plate, arranging the first base plate and the second base plate, welding the first web plate between the first base plate and the second base plate, and welding the main web plate between the first base plate and the second base plate to obtain the first box body, the manufacturing method further comprises: providing a plate thickness, a pre-welding preheating temperature range, and an inter-pass temperature range; Wherein, when the plate thickness h satisfies: 12.5mm<h≤50mm, the pre-welding preheating temperature range is 100°C~120°C, and the inter-pass temperature range is 160°C~220°C; when the plate thickness h satisfies: 50mm<h≤160mm, the pre-welding preheating temperature range is 160°C~180°C, and the inter-pass temperature range is 160°C~220°C.

[0012] In some embodiments, after the step of welding the first box body and the second box body, and welding the main web plate between the third base plate and the fourth base plate, the manufacturing method further comprises: heating the welding zone; performing node heat preservation; performing node cooling; Wherein, the target heating temperature range of the welding zone heating step is 250°C~300°C, after the temperature of the welding zone reaches the target heating temperature range, the node heat preservation step is executed, and the heat preservation time is greater than or equal to 2 hours.

[0013] In some embodiments, after the step of welding the first box body and the second box body, and welding the main web plate between the third base plate and the fourth base plate, the manufacturing method further comprises: welding the remaining web plates, the sealing plates, the lifting lugs and the connection plates.

[0014] Embodiments of the second aspect of the present invention further provide a steel node, which is obtained by the manufacturing method of the steel node according to any one of the above embodiments, and the steel node comprises: a first base plate, a second base plate, a first web plate, a third base plate, a fourth base plate, a second web plate, and a main web plate; The first substrate and the second substrate are arranged opposite to each other, the first web is welded between the first substrate and the second substrate, the third substrate and the fourth substrate are arranged opposite to each other, the second web is welded between the third substrate and the fourth substrate, and the main web is welded between the first substrate and the second substrate, and also between the third substrate and the fourth substrate.

[0015] Compared with the prior art, the beneficial effects of the present invention are: The manufacturing method of the steel node of the present invention can be understood as follows: welding a first web plate and a main web plate between two base plates to obtain a first box; obtaining a second box plate through similar steps; welding the first box plate and the second box plate together; and welding the main web plate between the two base plates of the second box plate, thereby enabling the main web plate to connect the first box plate and the second box plate. According to the above steps, the complex node structure can be divided into multiple box plate structures, and the main web plate can be welded between different box plate structures. The above-mentioned division steps allow the internal welding space of the steel node to be divided, and the welding difficulty is reduced based on the divided box plate structure. Therefore, compared with the existing manufacturing method of cutting large-area node plates as a whole, the manufacturing method of the steel node provided by the present invention can reasonably divide the overall structure of the steel node, thereby dividing the internal space of the steel node, which facilitates the internal welding operation of the steel node and is beneficial to improving the welding quality. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0017] Figure 1 This is a flowchart of a method for manufacturing a steel node according to an embodiment of the present invention; Figure 2 This is a three-dimensional schematic diagram of the first substrate, the first web plate, and the main web plate combined according to the first embodiment of the present invention. Figure 3 This is a three-dimensional schematic diagram of the first substrate, first web, third substrate, second web, and main web combined according to the first embodiment of the present invention. Figure 4 This is a three-dimensional schematic diagram of the first substrate, first web, third substrate, second web, fifth substrate, third web, seventh substrate, fourth web, and main web provided in the first embodiment of the present invention. Figure 5This is a perspective view of the first box, second box, third box, and fourth box provided in the first embodiment of the present invention; Figure 6 This is a three-dimensional schematic diagram of the first box, second box, third box and fourth box combined according to the first embodiment of the present invention; Figure 7 This is a three-dimensional schematic diagram of the first box, second box, third box, fourth box, and flange plate assembly provided in the first embodiment of the present invention; Figure 8 This is a three-dimensional schematic diagram of the first box, second box, third box, fourth box flange and the attached plate after being combined according to the first embodiment of the present invention; Figure 9 This is a three-dimensional schematic diagram of the first box, second box, third box, fourth box, flange, panel, and other accessories combined according to the first embodiment of the present invention; Figure 10 This is a side view of the first box and the second box after being combined, viewed along the first direction in the second embodiment of the present invention. Figure 11 This is a flowchart of the first part of a method for manufacturing a steel node according to another embodiment of the present invention; Figure 12 This is a flowchart of the second part of a method for manufacturing steel nodes according to another embodiment of the present invention; wherein, S305 is... Figure 11 The steps following S304, and the two steps are adjacent; Figure 13 This is a flowchart of the third part of the manufacturing method of the steel node in another embodiment of the present invention; wherein, S309 is... Figure 12 The steps following S308, and the two steps are adjacent.

[0018] Explanation of icon numbers: 200-steel node; 210 - First housing; 211 - First substrate; 2111 - First end; 212 - Second substrate; 2121 - Second end; 213 - First web; 214 - Main web; 2141 - First wall surface; 2142 - Second wall surface; 220 - Second housing; 221 - Third substrate; 222 - Fourth substrate; 223 - Second web; 230 - Third box; 231 - Fifth substrate; 232 - Sixth substrate; 233 - Third web; 240 - Fourth box; 241 - Seventh substrate; 242 - Eighth substrate; 243 - Fourth web; 250 - First tank body; 260 - Second tank; 270 - Integral wall surface; 280-Flange; 290 - Panel; X - First direction.

[0019] The realization of the objective, functional features and advantages of the present invention will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0020] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present invention.

[0021] It should be noted that if the embodiments of the present invention involve directional indicators (such as up, down, left, right, front, back, etc.), the directional indicators are only used to explain the relative positional relationship and movement of the components in a specific posture. If the specific posture changes, the directional indicators will also change accordingly.

[0022] Furthermore, if the embodiments of this invention involve descriptions such as "first" or "second," these descriptions are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, the use of "and / or," "and / or," or "and / or" throughout the text implies three parallel solutions. For example, "A and / or B" includes solution A, solution B, or a solution where both A and B are satisfied simultaneously. Furthermore, the technical solutions of the various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or impossible to implement, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection claimed by this invention.

[0023] Many existing buildings utilize steel trusses for their cantilevered sections, especially those with large cantilever spans. To ensure structural stability, specific steel node structures are often employed. These may involve large, complex node structures. Such steel node structures are characterized by their large size, limited internal welding space, and stringent welding quality requirements. The conventional manufacturing method for these nodes involves cutting large node plates as a single piece. This method tends to result in deep internal spaces within the node, restricting welding space and hindering welding operations. Therefore, the characteristics of these steel node structures make welding difficult and prone to quality issues.

[0024] In view of this, see Figures 1-13 This invention provides a method for manufacturing a steel node 200, which can reasonably disassemble the overall structure of the steel node 200, thereby disassembling the internal space of the steel node 200, which facilitates the internal welding operation of the steel node 200 and is beneficial to improving the welding quality.

[0025] See Figure 1 This is a schematic flowchart of a manufacturing method for a steel node 200 according to an embodiment of the present invention. The manufacturing method includes the following steps: S101: Provide a first substrate 211, a second substrate 212, a first web 213, and a main web 214; weld the first web 213 between the first substrate 211 and the second substrate 212; weld the main web 214 between the first substrate 211 and the second substrate 212 to obtain a first housing 210; wherein the first substrate 211 and the second substrate 212 are arranged opposite to each other, and the main web 214 extends along a first direction; S102: Provide a third substrate 221, a fourth substrate 222 and a second web plate 223, and weld the second web plate 223 between the third substrate 221 and the fourth substrate 222 to obtain a second housing 220; wherein the third substrate 221 and the fourth substrate 222 are arranged opposite to each other. S103: Weld the first housing 210 to the second housing 220, and weld the main web plate 214 between the third substrate 221 and the fourth substrate 222.

[0026] It should be noted that the substrate, web, flange 280, plate 290, and other plates mentioned in this invention can all be single plates (integral plates) or composite plates composed of single plates. Furthermore, the cross-sectional shapes of the substrate, web, flange 280, plate 290, and other plates can be determined according to the performance requirements of the steel node 200. The main web 214 in this invention can be a component of the first housing 210 or a plate independently connected to the first housing 210. For ease of description, the following example uses an embodiment where the main web 214 is independently connected to the first housing 210. Different embodiments can be combined with different technical solutions.

[0027] The following describes an exemplary method for manufacturing a steel node 200 provided by the present invention, based on different embodiments.

[0028] The process involves providing a first substrate 211, a second substrate 212, a first web 213, and a main web 214; welding the first web 213 between the first substrate 211 and the second substrate 212; and welding the main web 214 between the first substrate 211 and the second substrate 212 to obtain the first housing 210. (See also...) Figures 1-5 In some embodiments, the first substrate 211 and the second substrate 212 can be understood as plates forming one of the walls of the steel node 200; the first web 213 can be understood as a plate for connecting the first substrate 211 and the second substrate 212. In some embodiments, the first housing 210 can be understood as a combined three-dimensional structure formed by the first substrate 211, the second substrate 212, and the first web 213. Specifically, see [link to documentation]. Figure 6In some embodiments, the first housing 210 can be a cubic structure, and one end face of the first substrate 211 and the opposite end face of the second substrate 212 can define the internal space of the first housing 210. The first web 213 can be connected to the two end faces. In summary, in some embodiments, this step can be understood as: forming the structure of the first housing 210 by welding the first substrate 211, the second substrate 212, the first web 213, and the main web 214. It should be noted that in some embodiments, the step of welding the first web 213 between the first substrate 211 and the second substrate 212 can be divided into two steps: welding the first web 213 to the first substrate 211; welding the first web 213 to the second substrate 212. Or, welding the first web 213 to the second substrate 212; welding the first web 213 to the first substrate 211. It is understood that, in implementing the above-mentioned step of welding the first web plate 213 between the first substrate 211 and the second substrate 212, the first web plate 213 can be welded to the first substrate 211 or the second substrate 212 firstly, and then the first web plate 213 can be welded to another substrate.

[0029] It should be noted that, in some embodiments, the step of obtaining the first housing 210 can be understood as welding the first substrate 211, the second substrate 212, the first web plate 213, and the main web plate 214 together, and then welding the first housing 210 to other components; see [link to documentation]. Figures 2-4 In other embodiments, considering the practicality of welding operations, the substrate (e.g., the first substrate 211) and the corresponding web of one side of the first housing 210 can be welded first, and then other housings or other components can be prepared in a similar manner before welding the substrate on the other side.

[0030] In some embodiments, to ensure the versatility of the steel node 200, the first substrate 211 and the second substrate 212 arranged opposite to each other may have similar (or identical) shapes and corresponding arrangement positions. Similarly, the third substrate 221 and the fourth substrate 222 arranged opposite to each other may have similar (or identical) shapes and corresponding arrangement methods. For ease of description, the above embodiments are used as examples below, and different embodiments can be combined with each other in different technical solutions. Considering the manufacturing requirements for irregularly shaped nodes, in other embodiments, the first substrate 211 and the second substrate 212 arranged opposite to each other may have different shapes and corresponding arrangement methods, and the same applies to the third substrate 221 and the fourth substrate 222.

[0031] See Figures 1-2In some embodiments, the main web 214 can be welded to the first substrate 211 (or the second substrate 212), or it can be welded to both the first substrate 211 and the second substrate 212 simultaneously. The main web 214 extends along a first direction. See also Figures 4-6 In some embodiments, the main web 214 can also be used to connect the first housing 210 to other components of the steel node 200 (e.g., other housings or flange structures).

[0032] Considering the design requirements of the main web 214, see Figures 1-2 In some embodiments, the main web plate 214 may include multiple plates, which may be welded together.

[0033] The step of providing a third substrate 221, a fourth substrate 222, and a second web 223, and welding the second web 223 between the third substrate 221 and the fourth substrate 222 to obtain the second housing 220. It is understood that in some embodiments, the step of obtaining the second housing 220 may be similar to the step of obtaining the first housing 210, and therefore, the relevant description of the step of obtaining the first housing 210 can be referred to for this step. The second housing 220 may have a structural shape similar to (or the same as) that of the first housing 210. Correspondingly, in other embodiments, the second housing 220 may have a structural shape different from that of the first housing 210.

[0034] It should be noted that, in different embodiments, the steps for obtaining the first box body 210 described above can be implemented in two ways: on the one hand, the first web plate 213 and the main web plate 214 can be welded to a substrate on one side first, and then the substrate on the other side can be welded to the first web plate 213 or the main web plate 214; on the other hand, the first web plate 213 or the main web plate 214 can be welded to a substrate on one side first, and then the remaining web plates can be welded to a substrate on the other side.

[0035] The steps involve welding the first housing 210 to the second housing 220, and welding the main web plate 214 between the third substrate 221 and the fourth substrate 222. The main web plate 214 can be welded to individual substrates (e.g., the first substrate 211, the third substrate 221, etc.) or to multiple substrates simultaneously. In some embodiments, the first housing 210 and the second housing 220 can be different components of the steel node 200. The main web plate 214 can be used to connect the first housing 210 and the second housing 220, or it can serve as a reinforcing plate to improve the stress distribution of the first housing 210 and the second housing 220. It should be noted that in some embodiments, the overall structure of the steel node 200 can be obtained after completing the above steps; in other embodiments, a partial structure of the steel node 200 can be obtained after completing the above steps, for example, more housings need to be prepared and welded to obtain the overall structure of the steel node 200.

[0036] Based on the combination of the above embodiments, it can be concluded that, see Figures 1-6 In some embodiments, the manufacturing process of the steel node 200 can be understood as follows: welding the first web plate 213 and the main web plate 214 between two substrates to obtain the first box 210; obtaining the second box 220 through similar steps; welding the first box 210 and the second box 220 together; and welding the main web plate 214 between the two substrates of the second box 220, thereby enabling the main web plate 214 to connect the first box 210 and the second box 220. In some embodiments, according to the above steps, the complex node structure can be divided into multiple box structures, and the main web plate 214 can be welded between different box structures. The above-mentioned division steps can divide the internal welding space of the steel node 200, and the welding difficulty is reduced based on the divided box structure. Therefore, compared with the existing manufacturing method of cutting large-area node plates as a whole, the manufacturing method of steel node 200 provided by the present invention can reasonably disassemble the overall structure of steel node 200, thereby disassembling the internal space of steel node 200, which facilitates the internal welding operation of steel node 200 and is conducive to improving welding quality.

[0037] Regarding the steps described above, in some embodiments, the first box 210 and the second box 220 can be partial box structures of the entire steel node 200. Based on this, the first box 210 and the second box 220 can both be welded to one side of the main web 214; in other steps, other box structures can be fabricated, and the overall structure of the steel node 200 is obtained after welding the various boxes. Specifically, in some embodiments, the main web 214 may include a first wall surface 2141 and a second wall surface 2142 arranged in parallel opposite directions. See also... Figures 2-5In the first aspect embodiment, the first substrate 211 can be welded to the first wall surface 2141, and the third substrate 221 can be welded to the second wall surface 2142. Alternatively, in the second aspect embodiment, both the first substrate 211 and the third substrate 221 can be welded to the first wall surface 2141 (or the wall surface of one side of the main web 214). It is understood that, taking the vertically extending main web 214 as the boundary, in the first aspect embodiment, the first box 210 and the second box 220 can both be welded to one side of the main web 214 along the transverse direction; in the second aspect embodiment, the first box 210 and the second box 220 can be welded to opposite sides of the main web 214 along the transverse direction, respectively.

[0038] Referring to the embodiments of the first aspect, see Figures 4-6 In some embodiments, after welding the first housing 210 to the second housing 220 and welding the main web plate 214 between the third substrate 221 and the fourth substrate 222, the manufacturing method may further include: A fifth substrate 231, a sixth substrate 232, and a third web plate 233 are provided. The third web plate 233 is welded between the fifth substrate 231 and the sixth substrate 232 to obtain a third housing 230. The fifth substrate 231 and the sixth substrate 232 are arranged opposite to each other. A seventh substrate 241, an eighth substrate 242, and a fourth web plate 243 are provided. The fourth web plate 243 is welded between the seventh substrate 241 and the eighth substrate 242 to obtain a fourth housing 240. The seventh substrate 241 and the eighth substrate 242 are arranged opposite to each other. The third box 230 is welded to the fourth box 240, the third box 230 is welded to the first wall surface 2141, and the fourth box 240 is welded to the second wall surface 2142; wherein, the main web plate 214 is welded between the fifth substrate 231 and the sixth substrate 232, and is also welded between the seventh substrate 241 and the eighth substrate 242.

[0039] It is understood that in the embodiment including the above steps, the steel node 200 can be divided into a first box 210 and a second box 220 welded to the upper and lower ends of the vertically extending main web 214, and a third box 230 and a fourth box 240 welded to the lower and lower ends of the main web 214, with the upper and lower ends of the main web 214 as the boundary.

[0040] In conjunction with the embodiments of the second aspect, in some embodiments, after welding the first housing 210 to the second housing 220 and welding the main web plate 214 between the third substrate 221 and the fourth substrate 222, the manufacturing method may further include: A fifth substrate 231, a sixth substrate 232, and a third web plate 233 are provided. The third web plate 233 is welded between the fifth substrate 231 and the sixth substrate 232 to obtain a third housing 230. The fifth substrate 231 and the sixth substrate 232 are arranged opposite to each other. A seventh substrate 241, an eighth substrate 242, and a fourth web plate 243 are provided. The fourth web plate 243 is welded between the seventh substrate 241 and the eighth substrate 242 to obtain a fourth housing 240. The seventh substrate 241 and the eighth substrate 242 are arranged opposite to each other. The third housing 230 is welded to the fourth housing 240, and both the third housing 230 and the fourth housing 240 are welded to the second wall surface 2142; wherein, the main web plate 214 is welded between the fifth substrate 231 and the sixth substrate 232, and is also welded between the seventh substrate 241 and the eighth substrate 242.

[0041] It is understood that in embodiments including the above steps, the steel node 200 can be divided into a first box 210 and a second box 220 welded to one side of the main web 214 along the lateral direction, and a third box 230 and a fourth box 240 welded to the other side of the main web 214 along the lateral direction, with the two ends of the vertically extending main web 214 as the boundary.

[0042] It should be noted that the above-described embodiments, including the steps of splitting the overall steel node 200 into the first box 210 and the second box 220; or the steps of splitting into the first box 210, the second box 220, the third box 230 and the fourth box 240, are merely illustrative examples of the splitting method. The steel node 200 can be further subdivided into more box structures according to design requirements.

[0043] It is understood that in some embodiments, the embodiments of the first aspect and the second aspect described above are different embodiments based on the same splitting method and corresponding to different welding sequences. For ease of description, the following description uses the embodiment of the first aspect described above (the first substrate 211 is welded to the first wall surface 2141, and the third substrate 221 is welded to the second wall surface 2142) as an example. Different embodiments can be combined with each other in different technical solutions.

[0044] It is understood that in some embodiments, because the main web plate 214 is simultaneously welded to both the first housing 210 and the second housing 220 (or more housing structures), the main web plate 214 will be subjected to significant lateral stress. To improve the welding quality at the main web plate 214, in some embodiments, the main web plate 214 and the substrate can jointly define a groove, which can be used for welding between the main web plate 214 and the substrate. Specifically, see [link to documentation]. Figure 10In some embodiments, viewed along a first direction, the first substrate 211, the third substrate 221, and the main web 214 can jointly define a first groove 250; the second substrate 212, the fourth substrate 222, and the main web 214 can jointly define a second groove 260. It is understood that the first groove 250 can be defined by the welding surfaces of the first substrate 211, the third substrate 221, and the main web 214, and similarly, the second groove 260. From the perspective of the stress on the steel node 200, in some embodiments, the aforementioned first groove 250 and second groove 260 can be used to reduce the transverse stress on the steel node 200. For example, they can reduce the tearing welding stress on the main web 214 caused by welding on both sides of the main web 214. The transverse stress can be at least partially transferred to the groove (or the weld seam in the groove), and the stress at this location has a relatively small impact on the overall mechanical properties of the steel node 200. Meanwhile, the aforementioned first groove 250 and second groove 260 facilitate welding operations, which helps ensure a full penetration connection between the box flange (base plate) and the longitudinal main web 214. Furthermore, to ensure the straightness of the overall welded joint, both the first groove 250 and the second groove 260 can extend along the first direction.

[0045] For the specific welding method between the main web plate 214 and the box base plate, see [link / reference]. Figure 10 In some embodiments, viewed along a first direction, the first substrate 211 may have a first end 2111, and the second substrate 212 may have a second end 2121. Along the first direction, the first end 2111 may be located on the side of the first substrate 211 near the second substrate 212; the second end 2121 may be located on the side of the second substrate 212 near the first substrate 211. Regarding the above limitations, in some embodiments, the main web 214 may be welded to both the first end 2111 and the second end 2121 simultaneously. It is understood that in some embodiments, one side of the main web 214 may be welded to the end of the first substrate 211 near the second substrate 212, and the other side may be welded to the end of the second substrate 212 near the first substrate 211. By limiting the welding positions as described above, the main web 214 can be shortened to be flush with the inner wall of the housing substrate, allowing more lateral stress to be transferred to the weld (groove) and reducing the stress on the main web 214. Considering the actual welding operation, the main web plate 214 can be welded to the wall surface of the substrate that defines the groove, or it can be welded to the wall surface of the substrate that is used for welding with the web plate (e.g., the first web plate 213, the second web plate 223, etc.).

[0046] In the embodiment where the main web plate 214 is simultaneously welded to both the first end 2111 and the second end 2121, under ideal design conditions, viewed along the first direction, the main web plate 214 can be welded to a corresponding edge of the substrate, and the width of the groove defined by the substrate and the main web plate 214 (in the above embodiment, the groove width can be understood as the width of the root of the groove formed by the first substrate 211 and the third substrate 221) can correspond to (or be equal to) the width of the main web plate 214. Regarding the correspondence between the width of the main web plate 214 and the width of the groove, considering errors and welding operability, in some embodiments, the width of the main web plate 214 can be greater than the width of the groove. In other embodiments, the width of the main web plate 214 can be less than the width of the groove, and the width of the gap therein can be compensated by welds or connecting structures (e.g., welding gaskets).

[0047] For manufacturing requirements of irregularly shaped nodes, some embodiments of this invention can be incorporated. Specifically, see... Figure 10 The first substrate 211 and the third substrate 221 may have a first included angle, and the second substrate 212 and the fourth substrate 222 may have a second included angle. For example, in some embodiments, the first included angle or the second included angle may be approximately 10°.

[0048] An embodiment of the overall structure of the steel node 200, which is composed of the first box 210, the second box 220, the third box 230, and the fourth box 240. See, for details. Figure 7 The first substrate 211, the third substrate 221, the fifth substrate 231 and the seventh substrate 241 can jointly define the overall wall surface 270.

[0049] Based on the above limitations, see Figures 7-8 In some embodiments, prior to the steps of welding the first housing 210 to the second housing 220 and welding the main web 214 between the third substrate 221 and the fourth substrate 222, the manufacturing method may further include: A flange plate 280 is provided, and the flange plate 280 is welded to the integral wall surface 270; A mounting plate 290 is provided, which is welded to the integral wall surface 270 after the step of welding the flange plate 280 to the integral wall surface 270.

[0050] In some embodiments, a corbel or box structure may be welded to the integral wall surface 270 of the steel node 200, and the flange plate 280 may be the flange portion of the aforementioned corbel or box. The attachment plate 290 may be a plate structure that needs to be welded to the outer wall surface of the integral structure of the steel node 200. In some embodiments, the attachment plate 290 may also be a laminated plate structure formed by splicing a plurality of plate bodies. It can be understood that through the above steps, after the integral wall surface 270 of the steel node 200 is obtained by welding, the flange plate 280 may be welded thereon first, and then the attachment plate 290 is welded. The above steps enable the flange plate 280 to be directly welded to the integral wall surface 270, so that the mutual welding stress influence between the flange plate 280 and the attachment plate 290 can be reduced, the welding operation can be facilitated, and the welding quality can be improved. In addition, the deformation of the attachment plate 290 can be correspondingly controlled during the welding process of the attachment plate 290, for example, a tooling such as a temporary jig can be used to control the deformation.

[0051] To further improve the welding quality in the manufacturing method of the steel node 200, control over manufacturing process parameters may be added to the manufacturing method.

[0052] Therefore, in some embodiments, before the step of providing the first base plate 211, the second base plate 212, the first web plate 213 and the main web plate 214, welding the first web plate 213 between the first base plate 211 and the second base plate 212, and welding the main web plate 214 between the first base plate 211 and the second base plate 212 to obtain the first box body 210, the manufacturing method may further include: providing the plate thickness, the pre-welding preheating temperature range and the inter-pass welding temperature range; wherein, when the plate thickness h satisfies 12.5mm<h≤50mm, the pre-welding preheating temperature range is 100°C to 120°C, and the inter-pass welding temperature range is 160°C to 220°C; when the plate thickness h satisfies 50mm<h≤160mm, the pre-welding preheating temperature range is 160°C to 180°C, and the inter-pass welding temperature range is 160°C to 220°C.

[0053] It should be noted that the plate thickness refers to the corresponding actual thickness of the plate bodies constituting the steel node 200 (such as the first base plate 211, the second base plate 212, etc.); the inter-pass welding temperature refers to the minimum temperature of the previous weld bead when the subsequent weld bead is welded, in the case that the welding operation includes multiple passes (or multiple layers) of welding. It can be understood that corresponding preheating temperatures and inter-pass welding temperatures can be formulated corresponding to the thickness of the plate bodies, so that the welding quality of the steel node 200 can be guaranteed to a certain extent. In addition, in some embodiments, a drying operation may be performed before the welding consumables are used.

[0054] Regarding the aforementioned plate thickness, a reference plate thickness can be provided before using it in actual operation. The reference plate thickness is the recommended value (or recommended range) corresponding to the theoretically calculated plate thickness. To further improve welding quality and reduce practical risks, the plate thickness can be selected as the reference plate thickness (or close to the reference plate thickness), without relying on the theoretical coverage range of the reference plate thickness.

[0055] To further ensure the welding quality of the steel node 200, in some embodiments, a welding shrinkage test can be performed before welding to determine the amount of weld shrinkage and reduce the impact of welding shrinkage on the node dimensional deviation. Regarding the welding steps of the manufacturing method for the steel node 200, to ensure the strength of the steel node 200, in some embodiments, the weld of the steel node 200 is made using full penetration welding.

[0056] Furthermore, in some embodiments, after welding the first housing 210 to the second housing 220 and welding the main web 214 between the third substrate 221 and the fourth substrate 222, the manufacturing method may further include: Heating of the welding area; Node insulation; Node cooling.

[0057] The target heating temperature range for the welding zone heating step is 250℃~300℃. After the temperature of the welding zone is within the target heating temperature range, the node heat preservation step is performed, and the heat preservation time is greater than or equal to 2 hours.

[0058] The target heating temperature can be the target temperature of the heated component or the target temperature within the heating zone (heating chamber).

[0059] It should be noted that the heating step of the welding area can be understood as the operation of heating the area after welding, which can be done by electric heating or flame heating; the node heat preservation step can be understood as the operation of heat preservation of the steel node 200 after the heating step (including the above-mentioned welding area heating step); the node cooling step can be understood as the operation of cooling the steel node 200 by using an appropriate cooling rate after the heating step or heat preservation step.

[0060] To provide guidance for the manufacturing method of this invention, in the embodiments of this invention, the substrate, web, flange 280, and mounting plate 290 are all made of S690QL1 material, and the provided parameters all correspond to S690QL1 material. In other embodiments, according to the design requirements of the steel node 200, the plates and accessories constituting the steel node 200 may also be made of other materials, and the relevant parameters of the manufacturing method may be changed accordingly based on different materials or different manufacturing conditions.

[0061] See Figure 9 In some embodiments, the steel node 200 also includes other structures such as web plates, connecting plates, and accessories. Therefore, after welding the first housing 210 to the second housing 220 and welding the main web plate 214 between the third substrate 221 and the fourth substrate 222, the manufacturing method may further include: Weld the remaining web plates, end plates, lifting lugs, and connecting plates.

[0062] It is understood that the remaining web plates, end plates, lifting lugs, and connecting plates mentioned above are all structures that constitute steel node 200, and the welding operation of the above structures is carried out after the step of welding multiple boxes together.

[0063] It should be noted that, in the welding steps of the embodiments of the present invention, a step of welding stiffening plates can also be added. For example, see... Figures 2-4 In some embodiments, the first housing 210 may further include stiffening plates welded to the first substrate 211, the second substrate 212 and the main web 214.

[0064] For ease of understanding, the manufacturing method of the steel node 200 corresponding to a more complete embodiment of the present invention is described below. For details, please refer to [link to relevant documentation]. Figures 11-13 This is a schematic flowchart of a manufacturing method for a steel node 200 according to an embodiment of the present invention. The manufacturing method includes the following steps: S301: Provides plate thickness, preheating temperature range, and interpass temperature range; S302: Provide a first substrate 211, a second substrate 212, a first web plate 213, and a main web plate 214; weld the first web plate 213 between the first substrate 211 and the second substrate 212; weld the main web plate 214 between the first substrate 211 and the second substrate 212 to obtain a first housing 210; wherein, the first substrate is welded to the first wall surface, and the third substrate is welded to the second wall surface; S303: Provide a third substrate 221, a fourth substrate 222 and a second web plate 223, and weld the second web plate 223 between the third substrate 221 and the fourth substrate 222 to obtain a second housing 220. S304: Weld the first box 210 to the second box 220, and weld the main web plate 214 between the third substrate 221 and the fourth substrate 222. S305: Provide a fifth substrate 231, a sixth substrate 232 and a third web plate 233, and weld the third web plate 233 between the fifth substrate 231 and the sixth substrate 232 to obtain a third housing 230. S306: Provide a seventh substrate 241, an eighth substrate 242 and a fourth web plate 243, and weld the fourth web plate 243 between the seventh substrate 241 and the eighth substrate 242 to obtain a fourth housing 240. S307: Weld the third box 230 to the fourth box 240, weld the third box 230 to the first wall surface 2141, and weld the fourth box 240 to the second wall surface 2142. S308: Provides flange plate 280, and welds flange plate 280 to integral wall surface 270; S309: Provide a panel 290, which is welded to the integral wall 270 after the step of welding the flange to the integral wall 270; S310: Heating of the welding zone; S311: Node insulation; S312: Node cooling.

[0065] In some embodiments, the steps of the manufacturing method of the steel nodes 200 described in S301 to S312 can be understood as being performed by... Figures 2 to 9 The operating steps.

[0066] Correspondingly, see Figures 1-13 The present invention also provides a steel node 200, which is obtained by the manufacturing method of the steel node 200 of any of the above embodiments. The steel node 200 includes: First substrate 211, second substrate 212, first web 213, third substrate 221, fourth substrate 222, second web 223, and main web 214; The first substrate 211 and the second substrate 212 are arranged opposite to each other, and the first web plate 213 is welded between the first substrate 211 and the second substrate 212. The third substrate 221 and the fourth substrate 222 are arranged opposite to each other, and the second web plate 223 is welded between the third substrate 221 and the fourth substrate 222. The main web plate 214 can be welded between the first substrate 211 and the second substrate 212, and can also be welded between the third substrate 221 and the fourth substrate 222.

[0067] It is understood that the steel node 200 can have two base plates arranged opposite each other, with corresponding webs connected between the base plates. Similarly, it can also have two other base plates arranged opposite each other, with corresponding webs connected between the base plates, and the main web 214 is simultaneously connected between the aforementioned base plates, thereby forming the structure of the steel node 200.

[0068] The above are merely preferred embodiments of the present invention and do not limit the patent scope of the present invention. Any equivalent structural transformations made using the contents of the present invention specification and drawings under the concept of the present invention, or direct / indirect applications in other related technical fields, are included within the patent protection scope of the present invention.

Claims

1. A method for manufacturing a steel node, characterized in that, include: A first substrate, a second substrate, a first web plate, and a main web plate are provided. The first web plate is welded between the first substrate and the second substrate, and the main web plate is welded between the first substrate and the second substrate to obtain a first housing. The first substrate and the second substrate are arranged opposite to each other, and the main web plate extends along a first direction. A third substrate, a fourth substrate, and a second web are provided, and the second web is welded between the third substrate and the fourth substrate to obtain a second housing; wherein the third substrate and the fourth substrate are arranged opposite to each other; The first box body is welded to the second box body, and the main web plate is welded between the third substrate and the fourth substrate; With the vertically extending main web as the boundary, the first box and the second box are respectively welded to the two sides of the main web that are opposite each other in the lateral direction; when viewed along the first direction, the first substrate, the third substrate and the main web together define the first groove, and the second substrate, the fourth substrate and the main web together define the second groove, and both the first groove and the second groove extend along the first direction.

2. The method for manufacturing a steel node according to claim 1, characterized in that, The main web includes a first wall and a second wall arranged in parallel opposite directions, the first substrate is welded to the first wall, and the third substrate is welded to the second wall; After welding the first housing to the second housing and welding the main web plate between the third substrate and the fourth substrate, the manufacturing method further includes: A fifth substrate, a sixth substrate, and a third web are provided, and the third web is welded between the fifth substrate and the sixth substrate to obtain a third housing; wherein the fifth substrate and the sixth substrate are arranged opposite to each other; A seventh substrate, an eighth substrate, and a fourth web are provided, and the fourth web is welded between the seventh substrate and the eighth substrate to obtain a fourth housing; wherein the seventh substrate and the eighth substrate are arranged opposite to each other; The third box is welded to the fourth box, the third box is welded to the first wall, and the fourth box is welded to the second wall; The main web plate is welded between the fifth substrate and the sixth substrate, and also between the seventh substrate and the eighth substrate.

3. The method for manufacturing a steel node according to claim 1, characterized in that, The main web includes a first wall and a second wall arranged in parallel opposite directions, and the first substrate and the third substrate are both welded to the first wall. After welding the first housing to the second housing and welding the main web plate between the third substrate and the fourth substrate, the manufacturing method further includes: A fifth substrate, a sixth substrate, and a third web are provided, and the third web is welded between the fifth substrate and the sixth substrate to obtain a third housing; wherein the fifth substrate and the sixth substrate are arranged opposite to each other; providing a seventh base plate, an eighth base plate and a fourth web, and welding the fourth web between the seventh base plate and the eighth base plate to obtain a fourth box; wherein the seventh base plate and the eighth base plate are arranged opposite to each other; welding the third box and the fourth box, and welding both the third box and the fourth box to the second wall surface; wherein the main web is welded between the fifth base plate and the sixth base plate, and is also welded between the seventh base plate and the eighth base plate.

4. The method for manufacturing a steel node according to claim 1, characterized in that, when viewed along the first direction, the first base plate has a first end, the second base plate has a second end, along the first direction, the first end is located on the side of the first base plate close to the second base plate, and the second end is located on the side of the second base plate close to the first base plate; the main web is welded to both the first end and the second end.

5. The method for manufacturing a steel node according to claim 2, characterized in that, The first base plate, the third base plate, the fifth base plate and the seventh base plate jointly define an integral wall surface.

6. The method for manufacturing a steel node according to claim 5, characterized in that, before the step of providing a first base plate, a second base plate, a first web and a main web, arranging the first base plate and the second base plate, welding the first web between the first base plate and the second base plate, and welding the main web between the first base plate and the second base plate to obtain a first box, the manufacturing method further comprises: providing a plate thickness, a pre-welding preheating temperature range and an inter-pass welding temperature range; wherein, when the plate thickness h satisfies: 12.5mm<h≤50mm, the pre-welding preheating temperature range is 100°C~120°C, and the inter-pass welding temperature range is 160°C~220°C; when the plate thickness h satisfies: 50mm<h≤160mm, the pre-welding preheating temperature range is 160°C~180°C, and the inter-pass welding temperature range is 160°C~220°C.

7. The method for manufacturing a steel node according to claim 5, characterized in that, after the step of welding the first box and the second box, and welding the main web between the third base plate and the fourth base plate, the manufacturing method further comprises: heating the welding zone; performing node heat preservation; performing node cooling; wherein the target heating temperature range of the welding zone heating step is 250°C~300°C, and after the temperature of the welding zone reaches the target heating temperature range, the node heat preservation step is executed, and the heat preservation time is greater than or equal to 2 hours.

8. The method for manufacturing a steel node according to claim 1, characterized in that, after the step of welding the first box and the second box, and welding the main web between the third base plate and the fourth base plate, the manufacturing method further comprises: welding the remaining webs, sealing plates, lifting lugs and connection plates.

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