A multidirectional helical intersection structure and its modular assembly process

Abstract

The application discloses a multi-directional spiral cross structure and a modular assembly process thereof, and the structure comprises a circular pipe body, a spiral cross downcomer ring is arranged on the circular pipe body, the circular pipe body is composed of a plurality of cylindrical pipes and partitioning plates, the partitioning plates are provided with downcomer holes, the spiral cross downcomer ring is composed of a plurality of modules which are arranged in a spiral direction, each module comprises two intersecting bending and twisting components, and the end of the bending and twisting component is provided with a drainage channel which is aligned with the downcomer hole. The complex node is decomposed into the circular pipe body and the plurality of spiral modules, the arc plate forming process of "mother pipe bending-precise cutting" is adopted, and the three-dimensional grid positioning technology is combined to solve the processing and manufacturing of the multi-directional spiral cross structure. The application optimizes the structure form, simultaneously adopts a reasonable assembly sequence and an efficient welding method, significantly improves the construction efficiency, guarantees the collaborative optimization of the structure mechanical property and the drainage function, and is suitable for the manufacturing of a large-span building steel structure node.

Description

Technical Field

[0001] This invention relates to the field of building steel structure technology, and more specifically to a multi-directional spiral cross structure and its modular assembly process, which is particularly suitable for the construction of complex spatial nodes in large-span buildings. Background Technology

[0002] With the rapid development of prefabricated buildings, the demand for complex steel structures in landmark buildings is increasing. Traditional steel structure joint processes have significant drawbacks: insufficient precision in forming complex spatial curved surfaces, large welding deformation at multi-directional stress joints, difficulty in balancing drainage function and structural performance, and low construction efficiency. Existing spiral steel structure fabrication methods are complex, reliant on manual operation, resulting in high material loss rates and long installation cycles, failing to meet the demands of industrialized construction. Especially in multi-directional intersection joints, the synergistic optimization of structural precision and drainage function faces significant challenges, severely restricting the engineering application of complex-shaped buildings. Therefore, there is an urgent need to develop a multi-directional spiral intersection structure and an efficient assembly process to overcome existing technological bottlenecks. Summary of the Invention

[0003] This invention provides a multi-directional spiral cross structure and its modular assembly process, aiming to solve the problems of precise forming and rapid assembly of multi-directional spiral structures.

[0004] To achieve the above objectives, the present invention adopts the following technical solution: a multi-directional spiral cross structure, comprising a circular tube body, wherein a spiral cross water-falling ring is provided on the circular tube body, the circular tube body is composed of several cylindrical tube segments and dividing partitions, the dividing partitions are provided with water-falling holes, and the spiral cross water-falling ring is composed of several modules arranged crosswise along the spiral direction, each module including two intersecting bent and twisted components, the end of the bent and twisted components being provided with a drainage channel aligned with the water-falling holes.

[0005] Furthermore, the bending and twisting component includes two bending and twisting side strips, and a bending and twisting semi-arc plate is provided between the bending and twisting side strips, the cross-section of which is in the shape of a semi-circular open arch.

[0006] Furthermore, the bent-twisted semi-arc plate is cut from a bent circular tube, and the bent-twisted semi-arc plate with multiple bends is made by splicing together multiple sections of circular tubes bent in one direction.

[0007] A modular assembly process for a multi-directional spiral cross structure includes the following steps: Step 1: Machining the main body of the round tube Drainage holes are made in the partition plate; Several sections of circular tubular column are assembled with dividing baffles to ensure straightness and positioning accuracy of the drain hole; Step 2: Prefabrication of bending and twisting components Roll-made twisted side strips according to bending curvature and radius; Select a round tube, bend it according to the designed arc, and then cut it into a twisted semi-circular plate. Step 3: Modular Assembly Draw a three-dimensional positioning mesh on the surface of the cylindrical body; Install the bent and twisted side strips according to the grid positioning, and adjust the ends to align with the drain holes; Install the bent and twisted semi-circular plate, correct any local deviations, and then weld it in place. Step 4: Quality Inspection Perform UT (Ultrasound) testing to inspect weld quality; Conduct a watertightness test to ensure drainage function.

[0008] Furthermore, in step 2, the multi-directional curved semi-arc plate is made by assembling multiple unidirectional curved circular tubes into a multi-directional curved circular tube, and then cutting the curved circular tube.

[0009] In summary, this invention discloses a multi-directional spiral cross structure and a modular assembly process. By decomposing complex nodes into a circular tube body and multiple spiral modules, and employing an arc plate forming process of "main tube bending-precision cutting" combined with three-dimensional mesh positioning technology, the fabrication of this multi-directional spiral cross structure is solved. This application optimizes the structural form and adopts a reasonable assembly sequence and efficient welding methods, significantly improving construction efficiency and ensuring the synergistic optimization of structural mechanical properties and drainage functions. It is suitable for the manufacturing of steel structure nodes in large-span buildings. Attached Figure Description

[0010] Figure 1 This is a schematic diagram of the overall structure of an embodiment of the present invention; Figure 2 This is an exploded view of the structure of an embodiment of the present invention; Figure 3 This is a schematic diagram of the main structure of the circular tube in an embodiment of the present invention; Figure 4 This is a schematic diagram of the spiral cross-shaped water-falling ring structure in an embodiment of the present invention; Figures 5-7 This is a schematic diagram of the bending and twisting component of the spiral cross water-falling ring in an embodiment of the present invention; Figures 8-14 This is a schematic diagram of the assembly process according to an embodiment of the present invention.

[0011] Reference numerals: 1. Circular tube column; 2. Dividing partition; 3. Bending and twisting side strip; 5. Bending and twisting semi-circular plate. Detailed Implementation

[0012] The following is in conjunction with the appendix Figures 1 to 14 The present invention provides a more detailed description of a multi-directional spiral cross structure and its modular assembly process.

[0013] A multi-directional spiral cross structure: 1. The overall form of this node is a multi-directional spiral cross structure, specifically as follows: Figure 1 As shown.

[0014] 2. Based on its structural form, this component can be disassembled into a circular tube main body I and a spiral intersecting drainage ring II, as detailed below. Figure 2 As shown.

[0015] 3. The main body of the circular pipe consists of a circular pipe column and dividing partitions, namely: circular pipe column 1, dividing partition 2, and the outer side of the dividing partition has a drain hole K, as detailed below. Figure 3 As shown.

[0016] 4. The spiral cross-shaped water-falling ring consists of four main modules (A, B, C, and D), as follows: Figure 4 As shown; a single module consists of two intersecting twisted components E and F, as... Figure 5 As shown; a single bending and twisting component E (or F) consists of bending and twisting side strip 3, bending and twisting side strip 4, and bending and twisting semi-circular plate 5, specifically as follows: Figure 6 As shown; the cross-sectional form of a single bending and twisting component E (or F) is a semi-circular open arch, specifically as follows: Figure 7 As shown.

[0017] A modular assembly process for a multi-directional spiral cross structure is described below: I. Machining of the round tube body: First, a drainage hole K is made on the partition plate 2. Then, the four sections of circular pipe 1 are assembled with the partition plate 2 as a whole. During assembly, attention should be paid to ensuring the straightness of the main body of the component, and at the same time ensuring the assembly accuracy of the rainwater hole, as follows. Figure 8 As shown.

[0018] II. Machining of bending and twisting component parts plates: 1. Forming of 3 / 4 of the bent and twisted side strip of the part: The 3 / 4 of the bent and twisted side strip is rolled according to the bending curvature, bending radius and roll circle direction of the part; 2. Forming of the tortuous semi-circular plate 5: When manufacturing the tortuous semi-circular plate 5, first determine the curvature and arc length of the cross-section of the plate. Then, select a circular tube 6 with that curvature for processing, specifically as follows... Figure 9 As shown; when processing the round tube 6, it should first be bent and shaped according to the bending radius of the twisted semi-arc plate 5. For the twisted semi-arc plate 5 that bends in multiple directions, multiple round tubes (6-1, 6-2, 6-3) that bend in one direction can be assembled into a multi-direction bent round tube 6, as shown in the figure. Figure 10 As shown; then the bent circular tube 6 is cut into a twisted semi-arc plate 5, as shown. Figure 11 As shown.

[0019] III. Overall assembly: 1. First, draw the positioning lines for the bent side strips 3 or 4 on the outer surface of the main body I of the circular tube. When drawing the lines, a multi-line grid can be used. Connect the intersection points of the grid on the main body to form the positioning lines of the bent plate, such as... Figure 12 As shown; 2. Assemble the bent and twisted side panels 3 and 4 onto the main component according to the routing lines. Adjust any areas where the bending is incomplete. Also, control the cross-sectional dimensions between the bent and twisted side panels 3 and 4, and ensure that the end holes of the bent and twisted side panels 3 and 4 are aligned with the drain hole K. Specifically, as shown below... Figure 13 As shown; 3. After the above-mentioned plates are positioned, assemble the bent-torsional semi-circular plate 5 between the bent-torsional side strips 3 and 4, and correct any local deviations, such as... Figure 14 As shown.

[0020] IV. Quality Inspection 1. After the main body of the component is assembled and welded, UT testing is performed on the main body, and unqualified parts are reworked. At the same time, weld spatter, debris and other contaminants on the main body of the component are removed.

[0021] 2. The completed spiral cross-shaped drainage ring II should be checked for its airtightness to prevent leakage.

[0022] The above description is merely a preferred embodiment of the present invention. The scope of protection of the present invention is not limited to the above embodiments. All technical solutions falling within the scope of the present invention's concept are within the scope of protection of the present invention. It should be noted that for those skilled in the art, any improvements and modifications made without departing from the principles of the present invention should also be considered within the scope of protection of the present invention.

Claims

1. A multi-directional spiral cross structure, characterized in that: The device includes a circular tube body, on which a spiral cross-shaped drainage ring is provided. The circular tube body is composed of several cylindrical tube segments and dividing partitions. Drainage holes are provided on the dividing partitions. The spiral cross-shaped drainage ring is composed of several modules arranged in a cross direction along the spiral. Each module includes two intersecting bent and twisted components. The end of the bent and twisted components is provided with a drainage channel aligned with the drainage holes. The bending and twisting component includes two bending and twisting side strips, and a bending and twisting semi-arc plate is provided between the bending and twisting side strips, the cross-section of which is in the shape of a semi-circular open arch.

2. The multi-directional spiral cross structure according to claim 1, characterized in that: The curved and twisted semi-arc plate is cut from a curved circular tube. The curved and twisted semi-arc plate with multiple bends is made by splicing together multiple sections of circular tubes that are bent in one direction.

3. A modular assembly process for a multi-directional spiral cross structure as described in claim 1 or 2, characterized in that, Includes the following steps: Step 1: Machining the main body of the round tube and opening drainage holes on the partition plate; Assembling several sections of round tube column with the partition plate to ensure straightness and positioning accuracy of drainage holes; Step 2: Prefabrication of bending and twisting components: Roll-fabricate the bending and twisting side strips according to the bending curvature and radius; Select a round tube, bend it according to the designed arc, and then cut it into a twisted semi-circular plate. Step 3: Modular assembly: Draw a three-dimensional positioning grid on the surface of the round pipe body; install the bent and twisted side strips according to the grid positioning, and adjust the ends to align with the drain holes; install the bent and twisted semi-arc plates, correct local deviations, and then weld them in place; Step 4: Quality inspection: Perform UT flaw detection to inspect the weld quality; conduct a water tightness test to ensure drainage function.

4. The modular assembly process of the multi-directional spiral cross structure according to claim 3, characterized in that: In step 2, the multi-directional curved semi-arc plate is made by assembling multiple unidirectional curved circular tubes into a multi-directional curved circular tube, and then cutting the curved circular tube.

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