An adjustable angle h-shaped steel splayed support node connecting device and construction method

Abstract

The application relates to an adjustable-angle H-shaped steel splayed support node connecting device and a construction method, which comprises at least three H-shaped steels, a shaft core cylinder and metal discs, one metal disc is coaxially arranged at each of the two opening ends of the shaft core cylinder; high-strength bolts of the metal discs penetrate the shaft core cylinder along the central axis of the shaft core cylinder to assemble the metal discs and the shaft core cylinder; a rotating space is formed between the two parallel metal discs, at least three H-shaped steels are arranged in the rotating space, the flanges of each H-shaped steel are slidably connected with the corresponding metal disc, the end of the web of the H-shaped steel is connected with the circumferential wall of the shaft core cylinder through a connecting piece; the angle formed between the adjacent H-shaped steels relative to the shaft core cylinder can be changed; the application can meet various construction conditions by adjusting the splayed support angle, has the advantages of flexible installation, convenient disassembly, recycling, safety and reliability, no need of on-site welding and the like, and has large node strength, and can meet the design principle of strong node and weak member.

Description

Technical Field

[0001] This invention relates to an adjustable-angle H-beam steel figure-eight brace joint connection device and construction method, belonging to the field of infrastructure construction technology. Background Technology

[0002] Currently, the development of underground engineering projects, represented by urban rail transit, has become one of the important development directions in my country's construction industry. During the foundation construction process, the foundation pit support structure is crucial to the safe progress of the entire project. Existing internal support structures mainly include concrete supports and steel supports. Compared with traditional concrete support structures, prefabricated steel supports can meet the safety and stability requirements of foundation pit engineering, while also offering advantages such as ease of assembly and disassembly, high efficiency and convenience, recyclability, and green efficiency.

[0003] In prefabricated H-beam supports, existing V-bracing nodes often require individual design based on the pit shape, component dimensions, and force transmission path, necessitating the fabrication of numerous non-standard components. This makes it difficult to adjust the connector dimensions and force transmission angles when the pit shape is complex or the construction site deviates from the design. When encountering construction difficulties, traditional V-bracing often resorts to cutting the bracing components or filling them with steel blocks to ensure a proper connection between the V-bracing and the walers and bracing. In some cases, due to the inability of non-standard components to fit properly, the connection between the V-bracing node and the waler is directly severed. This approach not only increases on-site construction work and limits the application scope of current steel supports but also results in unclear force transmission paths and insufficient node connection strength, which is detrimental to the safety and stability of the pit project.

[0004] With the increasing development of underground engineering projects, large-area, irregularly shaped foundation pits are frequently encountered. This places higher demands on the connection methods, load-bearing capacity, and force transmission paths of prefabricated H-beam steel support components, especially at the V-bracing nodes where internal forces are concentrated, force transmission is complex, and installation is difficult. This necessitates a standardized node that can change the V-bracing connection angle and force transmission direction, while also possessing high connection strength and the ability to withstand large axial compressive loads. Currently, the common method is to manufacture non-standard components for each V-bracing node based on its dimensions, angle, and requirements. However, these non-standard connectors are often only usable once, resulting in significant waste. Furthermore, adjustments are difficult to make promptly when site conditions change, impacting construction progress.

[0005] Therefore, it is necessary to design an H-beam steel figure-eight brace node connection device to enable the prefabricated H-beam steel support to safely and reliably support foundation pits of various shapes, reduce material waste caused by non-standard connectors, and avoid insufficient node strength caused by mismatched connectors. Summary of the Invention

[0006] This invention provides an adjustable-angle H-beam steel figure-eight brace node connection device and construction method. By adjusting the angle of the figure-eight brace, it can meet various construction conditions, and its node strength is relatively large, which can meet the design principle of strong node and weak member.

[0007] The technical solution adopted by this invention to solve its technical problem is:

[0008] An adjustable-angle H-beam figure-eight brace node connection device includes at least three H-beams, a core cylinder, and a metal disc. A metal disc is coaxially mounted at each of the two open ends of the core cylinder. High-strength bolts for the discs pass through the core cylinder and the metal discs along the central axis of the core cylinder, assembling the metal discs and the core cylinder.

[0009] A rotating space is formed between two parallel metal discs. At least three H-beams are installed in the rotating space. The flange of each H-beam is slidably connected to the corresponding metal disc. The web end of the H-beam is connected to the circumferential wall of the shaft cylinder through a connector.

[0010] The angle formed between adjacent H-beams relative to the central core can be changed;

[0011] As a further preferred embodiment of the present invention, the shaft cylinder includes a thin-walled shaft cylinder and a shaft cylinder surround, wherein the shaft cylinder surround is coaxially sleeved on the outside of the thin-walled shaft cylinder by high-strength shaft cylinder bolts.

[0012] The height of the thin-walled shaft tube in the central axis direction is greater than the height of the shaft tube enclosure in the central axis direction, and the height of the thin-walled shaft tube in the central axis direction is the same as the height of the web of the H-beam.

[0013] The open end of the thin-walled shaft cylinder is connected to the metal disc, and the web end of the H-beam is movably connected to the circumferential wall of the shaft cylinder enclosure through a connector.

[0014] As a further preferred embodiment of the present invention, the connecting member includes a web plate connecting member and a connecting filler member.

[0015] The web plate connector includes a web plate connector pin and two connecting plates. The two connecting plates are arranged in parallel relative to each other, forming a gap between the surfaces of the two connecting plates. The web plate connector pin is installed on one end of each of the two connecting plates.

[0016] The connecting filler includes a connecting filler plate, a pin, and a filler plate. The filler plate is elongated and has the connecting filler plate pin installed at one end.

[0017] When the connector is connected to the shaft tube enclosure, the filler plate is inserted into the gap formed by the two connecting plates and forms an integral component through the high-strength bolts of the web plate connector. At this time, the web plate connector pin and the connector filler plate pin are respectively inserted from the two ends of the shaft tube enclosure.

[0018] As a further preferred embodiment of the present invention, the web end of the H-beam is inserted into the gap formed between the surfaces of the two connecting plates, and the H-beam is fixedly connected to the connecting member by high-strength bolts on the web.

[0019] As a further preferred embodiment of the present invention, at least three sets of evenly distributed slide rails are formed along the circumference of the metal disk. Each set of slide rails includes three slide rails that are concentrically formed with the metal disk. The three slide rails are distributed sequentially from the center of the metal disk to the circumference of the metal disk, and the three slide rails as a whole form a fan shape.

[0020] The flanges of the H-beam are assembled and connected to any one of the slide rails in the matching slide rail group by high-strength flange bolts.

[0021] As a further preferred embodiment of the present invention, three H-beams are provided, and three sets of evenly distributed slide rails are opened along the circumference on the metal disc accordingly.

[0022] As a further preferred embodiment of the present invention, it also includes a limiting disk, which is in the shape of a ring, and a plurality of limiting holes are evenly opened along the circumference of the limiting disk ring; the limiting disk is covered on the metal disc, and the limiting high-strength bolt passes through the limiting disk located on the surfaces of the two metal discs in a direction parallel to the central axis.

[0023] The construction method based on the adjustable-angle H-beam steel figure-eight brace node connection device specifically includes the following steps:

[0024] Step S1: Use high-strength bolts to assemble the thin-walled shaft tube and the shaft tube surround into one piece to form the shaft tube;

[0025] Step S2: The web plate connector pin and the connector filler plate pin of the web plate connector are simultaneously inserted into the gap formed by the thin-walled shaft cylinder and the shaft cylinder surrounding part. The filler plate is inserted into the gap formed between the two connecting plates. The web plate connector and the filler plate are assembled into one piece using the high-strength bolts of the connector.

[0026] Step S3: The web of the H-beam extends between the two connecting plates of the web connector, and the H-beam and the connector are assembled into one piece using high-strength bolts on the web.

[0027] Step S4: Two metal discs are installed at the two open ends of the thin-walled shaft cylinder, both coaxial, and the two metal discs are connected by high-strength bolts.

[0028] Step S5: Determine the angle of the figure-eight brace, align the slide rail of the metal disc with the matching H-beam flange, and use high-strength flange bolts to complete the connection between the H-beam and the metal disc;

[0029] Step S6: Install the limiting plate on the outside of the H-beam flange, and use the limiting high-strength bolts to complete the assembly of the limiting plate located at the two flanges of the H-beam.

[0030] By employing the above technical solutions, the present invention has the following beneficial effects compared to the prior art:

[0031] 1. The adjustable-angle H-beam steel figure-eight brace node connection device provided by the present invention allows the H-beam steel to rotate automatically around the central cylinder by cooperating with the connecting parts and the slide rail on the metal disc. The H-beam steel figure-eight brace nodes at any angle are formed between adjacent H-beam steels. During on-site assembly, it can adapt to various foundation pit shapes, reduce the installation gap at the connection node and between the H-beam steel support and the waler caused by improper figure-eight brace angle, and enable the soil pressure to be smoothly transmitted from the waler to the figure-eight brace node, and then from the figure-eight brace node to the other internal support components, thereby improving the collaborative support capacity of each component.

[0032] 2. The adjustable-angle H-beam spur joint connection device provided by the present invention enhances the out-of-plane stiffness of the joint by connecting the metal disc to the upper and lower flanges of the H-beam, thus preventing out-of-plane failure of the H-beam spur joint under earth pressure. The connection device, in conjunction with the limiting disc, enhances the weak axis strength of the H-beam, thus preventing weak axis instability of the H-beam under earth pressure, and meets the requirements of strong joints and weak members in the design of steel support.

[0033] 3. The adjustable angle H-beam steel figure-eight brace node connection device provided by the present invention first has a connection relationship with the shaft cylinder and the web of the H-beam steel, and then cooperates with the connection between the flange of the H-beam steel and the metal disc, thus forming an effective axial pressure transmission path. This avoids excessive bending or torsion of the node and support rod due to improper angle or unreliable connection, and ensures that the support system can provide sufficient resistance to resist the soil pressure of the foundation pit.

[0034] 4. The adjustable angle H-beam steel figure-eight brace node connection device provided by the present invention is assembled by high-strength bolts and pins, eliminating the need for on-site welding. The entire node device is flexible to install, easy to disassemble, and widely applicable, meeting various construction conditions. Each part is subjected to uniform stress and has high strength, making it resistant to damage. After disassembly, it can be reused in other foundation pit constructions, resulting in good economic benefits. Attached Figure Description

[0035] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0036] Figure 1 This is a three-dimensional schematic diagram of the preferred embodiment of the present invention after the overall structure is assembled;

[0037] Figure 2 This is a three-dimensional schematic diagram of the preferred embodiment of the present invention after the overall structure has been disassembled;

[0038] Figure 3 This is a schematic diagram of the assembly of the shaft cylinder according to a preferred embodiment of the present invention;

[0039] Figure 4 This is a schematic diagram of the assembly of the connector and the shaft cylinder according to a preferred embodiment of the present invention;

[0040] Figure 5 This is a schematic diagram of the assembly of the web plate connector and the connecting filler provided by the present invention in a preferred embodiment;

[0041] Figure 6 This is a schematic diagram of the assembly of H-beams and connectors according to a preferred embodiment of the present invention;

[0042] Figure 7 This is a schematic diagram of the installation of a metal disc according to a preferred embodiment of the present invention;

[0043] Figure 8 This is a schematic diagram of the assembly of H-beams and metal discs according to a preferred embodiment of the present invention;

[0044] Figure 9 This is a schematic diagram of the installation of the limiting plate according to a preferred embodiment of the present invention.

[0045] In the picture:

[0046] 1 represents the H-beam, 101 represents the bolt holes for the flanges of the H-beam, and 102 represents the bolt holes for the web of the H-beam.

[0047] 2 represents a metal disc, 201 represents a bolt hole for the metal disc, and 202 represents a slide rail.

[0048] 3 represents a thin-walled shaft cylinder, and 301 represents the bolt holes on the side of the thin-walled shaft cylinder.

[0049] 4 represents the shaft sleeve enclosure, and 401 represents the bolt holes on the side of the shaft sleeve enclosure.

[0050] 5 is the web plate connector, 501 is the web plate connector pin, 502 is the bolt hole for the first connecting plate, 503 is the bolt hole for the second connecting plate, and 504 is the connecting plate.

[0051] 6 represents the connecting filler, 601 represents the connecting filler plate pin, 602 represents the filler plate bolt hole, and 603 represents the filler plate.

[0052] 7 is the limiting plate, and 701 is the limiting hole.

[0053] 8 represents the high-strength bolt for the shaft core; 801 represents the threaded rod of the high-strength bolt for the shaft core; and 802 represents the fixing nut of the high-strength bolt for the shaft core.

[0054] 9 is the high-strength bolt for the web plate connector, 901 is the threaded rod of the high-strength bolt for the web plate connector, and 902 is the fixing nut of the high-strength bolt for the web plate connector.

[0055] 10 is the high-strength bolt for the web plate, 1001 is the threaded rod of the high-strength bolt for the web plate, and 1002 is the fixing nut of the high-strength bolt for the web plate.

[0056] 11 is a high-strength disc bolt, 1101 is the threaded rod of the high-strength disc bolt, and 1102 is the retaining nut of the high-strength disc bolt.

[0057] 12 is a flange high-strength bolt, 1201 is the bolt shank of the flange high-strength bolt, and 1202 is the retaining nut of the flange high-strength bolt.

[0058] 13 is the limiting high-strength bolt, 1301 is the bolt of the limiting high-strength bolt, and 1302 is the fixing nut of the limiting high-strength bolt. Implementation

[0059] The present invention will now be described in further detail with reference to the accompanying drawings. In the description of this application, it should be understood that the terms "left side," "right side," "upper part," "lower part," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. "First," "second," etc., do not indicate the importance of the components, and therefore should not be construed as a limitation of the present invention. The specific dimensions used in this embodiment are only for illustrating the technical solution and do not limit the scope of protection of the present invention.

[0060] As described in the background section, for foundation pits with large excavation areas and irregular planes that occur frequently, it is necessary to use prefabricated H-beams that can vary the angle of the V-bracing connection to meet various construction conditions. It is also required to ensure the strength of the joints and meet the design principle of strong joints and weak members.

[0061] Based on this, this application provides an adjustable-angle H-beam figure-eight brace node connection device. After determining the angle of the figure-eight brace and the force transmission path, the angle of the figure-eight brace is adjusted to meet the construction conditions. The device that realizes this function includes at least three H-beams 1, as well as a core cylinder and a metal disc 2. A metal disc is coaxially installed at each of the two open ends of the core cylinder. A high-strength bolt 11 for the disc passes through the core cylinder and the metal disc along the central axis of the core cylinder, assembling the metal disc and the core cylinder. The high-strength bolt for the disc includes a bolt 1101 and a fixing nut 1102. Several metal disc bolt holes 201 are opened at the center of the metal disc. The bolt 11 of the high-strength bolt passes through the metal disc bolt holes at both open ends of the core cylinder and is assembled by the fixing nut of the high-strength bolt for the disc.

[0062] A rotating space is formed between two parallel metal discs. At least three H-beams are installed within this space, with the flanges of each H-beam slidably connected to the corresponding metal disc. The web ends of the H-beams are connected to the circumferential wall of the central cylinder via connectors. The connection method between the connectors and the metal discs and the H-beams allows for changes in the angle between adjacent H-beams and the central cylinder, thus meeting the requirements of actual construction conditions. It should be noted that the number of H-beams can be appropriately increased according to the requirements of the work node.

[0063] Figure 1 The diagram shown is a three-dimensional schematic diagram of the assembled preferred embodiment provided in this application. For ease of description, it has been disassembled to form the following... Figure 2 The disassembly diagram shown is as follows. First, in the preferred embodiment, the core component for adjusting the H-beam angle is the mandrel, consisting of the thin-walled mandrel 3 and the mandrel surround 4. Figure 3 As shown, the shaft sleeve is coaxially fitted onto the outside of the thin-walled shaft through high-strength shaft bolts 8. The high-strength shaft bolts include a bolt 801 and a fixing nut 802. Several bolt holes 301 on the side of the thin-walled shaft are opened on the circumferential wall of the thin-walled shaft, and several bolt holes 401 on the side of the shaft sleeve are opened on the circumferential wall of the shaft sleeve. When the shaft sleeve is fitted onto the outside of the thin-walled shaft, the positions of the bolt holes on the side of the shaft sleeve match the positions of the bolt holes on the side of the thin-walled shaft. At this time, the bolt 801 of the high-strength shaft bolt passes through the bolt holes on the side of the shaft sleeve and the side of the thin-walled shaft in sequence and is then assembled with the fixing nut of the high-strength shaft bolt, thus completing the connection between the shaft sleeve and the thin-walled shaft.

[0064] Since the thin-walled mandrel needs to be connected to the flange of the H-beam via a metal disc, and the mandrel enclosure needs to be connected to the web of the H-beam, the height of the thin-walled mandrel along its central axis is greater than that of the mandrel enclosure along its central axis. The height of the thin-walled mandrel along its central axis is the same as that of the web of the H-beam. Specifically, the metal disc and the connection between the H-beam and the mandrel are as follows: the open end of the thin-walled mandrel is connected to the metal disc, and the web end of the H-beam is movably connected to the circumferential wall of the mandrel enclosure via a connector.

[0065] The above connection involves connectors and metal disks. First, regarding the connectors, such as... Figures 4-6As shown, the connector includes a web plate connector 5 and a connecting filler 6. The web plate connector includes a web plate connector pin 501 and two connecting plates 504. The two connecting plates are arranged parallel to each other, forming a gap between their surfaces. The web plate connector pin is installed on one end of each of the two connecting plates. The connecting filler includes a connecting filler plate pin 601 and a filler plate 603. The filler plate is elongated, and a connecting filler plate pin is installed at one end of it.

[0066] When the connector is connected to the shaft cylinder enclosure, the filler plate is inserted into the gap formed by the two connecting plates and forms an integral component through the high-strength bolts 9 of the web plate connector. At this time, the web plate connector pin and the connector filler plate pin are respectively inserted from the two ends of the shaft cylinder enclosure. The aforementioned 9 includes the screw 901 of the high-strength bolt of the web plate connector and the fixing nut 902 of the high-strength bolt of the web plate connector. A number of filler plate bolt holes 602 are opened on the filler plate, and a number of first connecting plate bolt holes 502 are opened on each connecting plate near the position of the web plate connector pin. When the filler plate is inserted into the gap formed by the two connecting plates, the positions of the first connecting plate bolt holes and the filler plate bolt holes are matched. At this time, the screw of the high-strength bolt of the web plate connector passes through the first connecting plate bolt holes and the filler plate bolt holes of the two connecting plates and is assembled through the fixing nut of the high-strength bolt of the web plate connector.

[0067] Next is the connection structure between the H-beam and the connectors and metal discs. The web end of the H-beam is inserted into the gap formed between the surfaces of the two connecting plates, and the H-beam and the connectors are fixedly connected by high-strength web bolts 10. The high-strength web bolts include a bolt 1001 and a fixing nut 1002. Figure 4 From a certain perspective, several second connecting plate bolt holes 503 are opened near the outer right side of the web plate connector, and several H-beam web plate bolt holes 102 are opened on the web plate of the H-beam. When the web plate of the H-beam is inserted between the two connecting plates, it is located at... Figure 2 From this perspective, the bolt holes of the H-beam web near the core tube are also pierced by the screws of the high-strength bolts of the web connector. The bolt holes of the H-beam web on the right side away from the core tube and the bolt holes of the second connecting plate are simultaneously pierced by the screws of the high-strength bolts of the web, thus completing the connection between the H-beam web and the connector.

[0068] Simultaneously, at least three sets of evenly distributed slide rails are formed along the circumference of the metal disc. Each set of slide rails includes three slide rails 202 concentrically formed with the metal disc. The three slide rails are distributed sequentially from the center of the metal disc to the circumference of the metal disc, and the three slide rails together form a fan shape. The flange of the H-beam is assembled and connected to any slide rail in the matching slide rail set through high-strength flange bolts 12. The high-strength flange bolt includes a bolt 1201 and a fixing nut 1202. Several H-beam flange bolt holes 101 are formed on the flange of the H-beam. The bolt 101 passes through the H-beam flange bolt holes, and the slide rail is assembled through the fixing nut of the high-strength flange bolt. The bolt 101 can slide within the arc groove of the slide rail, thereby achieving a sliding connection between the H-beam and the metal disc. The connector is first connected to the shaft core and then to the web of the H-beam. Combined with the connection between the H-beam flange and the metal disc, an effective axial pressure transmission path is finally formed. This avoids excessive bending or torsion of nodes and support members due to improper angles or unreliable connections, ensuring that the support system can provide sufficient resistance to resist the soil pressure of the foundation pit.

[0069] Once the angle of the entire figure-eight brace meets the construction conditions, it needs to be stabilized and limited. Therefore, this application also includes a limiting disc 7, which is circular in shape, with several limiting holes 701 evenly opened along the circumference of the limiting disc. The limiting disc is covered on the metal disc, and the disc surface contacts the flange of the H-beam on the same side. The limiting high-strength bolt 13 passes through the limiting disc located on the surfaces of the two metal discs in a direction parallel to the central axis. The limiting high-strength bolt includes a bolt 1301 and a fixing nut 1302. When the position of the H-beam is determined, the bolt 13 of the limiting high-strength bolt passes through the limiting holes of the metal discs located at both ends of the shaft cylinder and is assembled by the limiting high-strength bolt.

[0070] Finally, this application also provides a construction method for an adjustable-angle H-beam steel figure-eight brace joint connection device, specifically including the following steps:

[0071] Step S1: Figure 3 As shown, the thin-walled shaft tube and the shaft tube surround are assembled into one piece using high-strength bolts to form the shaft tube;

[0072] Step S2: Figures 4-5 As shown, the web plate connector pin 501 and the connector filler plate pin 60 of the web plate connector 6 simultaneously extend into the gap formed by the thin-walled shaft cylinder 3 and the shaft cylinder surrounding part 4. The filler plate 603 extends into the gap formed between the two connecting plates 504. The web plate connector and the filler plate are assembled into one piece using the high-strength bolts of the connector.

[0073] Step S3: Figure 6As shown, the web of the H-beam extends into the space between the two connecting plates 504 of the web connector 5. The bolts of the high-strength bolts on the web pass through the bolt holes of the H-beam web and the bolt holes of the second connecting plate. The fixing nuts of the high-strength bolts on the web are tightened to assemble the H-beam and the connector into one piece.

[0074] Step S4: Figure 7 As shown, two metal discs 2 are installed at the two open ends of the thin-walled shaft cylinder 3. The two are coaxial and are connected by high-strength bolts 11.

[0075] Step S5: Figure 8 As shown, determine the angle of the figure-eight brace, align the slide rail 202 of the metal disc 2 with the flange of the matching H-beam 1, and use the flange high-strength bolts 12 to complete the connection between the H-beam 1 and the metal disc 2.

[0076] Step S6: Figure 9 As shown, the limiting plate 7 is installed on the outer side of the flange of the H-beam 1, and the assembly of the limiting plate 7 located at the two flanges of the H-beam is completed by using the limiting high-strength bolts 13.

[0077] In summary, this application provides an adjustable-angle H-beam steel spur joint connection device and construction method. This connection device allows the H-beam steel spur to adapt to foundation pits of various shapes, reduces the installation gap at the connection joint and between the H-beam steel support and the waler caused by improper spur angle, improves the strength of the spur joint, improves the axial pressure transmission path at the joint, avoids excessive bending or torsion of the joint and support members, and ensures that the support system can provide sufficient resistance to resist the soil pressure of the foundation pit. It also has the advantages of flexible installation, convenient disassembly, recyclability, safety and reliability, and no need for on-site welding.

[0078] Those skilled in the art will understand that, unless otherwise defined, all terms used herein (including technical and scientific terms) have the same meaning as commonly understood by one of ordinary skill in the art to which this application pertains. It should also be understood that terms such as those defined in general dictionaries should be understood to have the same meaning as in the context of the prior art, and should not be interpreted in an idealized or overly formal sense unless defined as herein.

[0079] The meaning of "and / or" as used in this application includes situations where each exists alone or both exist simultaneously.

[0080] The term "connection" as used in this application can mean a direct connection between components or an indirect connection between components through other components.

[0081] Based on the above-described preferred embodiments of the present invention, and through the foregoing description, those skilled in the art can make various changes and modifications without departing from the inventive concept. The technical scope of this invention is not limited to the contents of the specification, but must be determined according to the scope of the claims.

Claims

1. An adjustable-angle H-beam figure-eight brace node connection device, comprising at least three H-beams (1), characterized in that: It also includes a shaft cylinder and a metal disc (2), with a metal disc (2) coaxially installed at each of the two open ends of the shaft cylinder; a high-strength bolt (11) for the disc passes through the shaft cylinder and the metal disc (2) along the central axis of the shaft cylinder to assemble the metal disc (2) with the shaft cylinder; The shaft tube includes a thin-walled shaft tube (3) and a shaft tube surround (4). The shaft tube surround (4) is coaxially sleeved on the outside of the thin-walled shaft tube (3) by high-strength shaft tube bolts (8). The height of the thin-walled core tube (3) in the central axis direction is greater than the height of the core tube enclosure (4) in the central axis direction. The height of the thin-walled core tube (3) in the central axis direction is the same as the height of the web of the H-beam (1). The open end of the thin-walled shaft cylinder (3) is connected to the metal disc (2), and the web end of the H-beam (1) is movably connected to the circumferential wall of the shaft cylinder enclosure (4) through a connector. A rotating space is formed between two parallel metal discs (2), and at least three H-beams (1) are installed in the rotating space. The flange of each H-beam (1) is slidably connected to the corresponding metal disc (2), and the web end of the H-beam (1) is connected to the circumferential wall of the shaft cylinder through a connector. The connector includes a web connector (5) and a connector filler (6). The web plate connector (5) includes a web plate connector pin (501) and two connecting plates. The two connecting plates are arranged in parallel relative to each other, forming a gap between the surfaces of the two connecting plates. The web plate connector pin (501) is installed on one end of the two connecting plates. The connecting filler (6) includes a connecting filler plate pin (601) and a filler plate (603). The filler plate (603) is elongated and has the connecting filler plate pin (601) installed at one end. When the connector is connected to the shaft cylinder enclosure (4), the filling plate (603) is inserted into the gap formed by the two connecting plates and forms an integral component through the high-strength bolts (9) of the web plate connector. At this time, the web plate connector pin (501) and the connector filling plate pin (601) are respectively inserted from the two ends of the shaft cylinder enclosure (4). The angle formed between adjacent H-beams (1) relative to the central core can be changed.

2. The adjustable-angle H-beam steel figure-eight brace node connection device according to claim 1, characterized in that: The web end of the H-beam (1) is inserted into the gap formed between the two connecting plates, and the H-beam (1) is fixedly connected to the connector by the web high-strength bolts (10).

3. The adjustable-angle H-beam steel figure-eight brace node connection device according to claim 1, characterized in that: At least three sets of evenly distributed slide rails are opened along the circumference of the metal disk (2). Each set of slide rails includes three slide rails (202) that are concentrically opened with the metal disk (2). The three slide rails (202) are distributed sequentially from the center of the metal disk (2) to the circumference of the metal disk (2), and the three slide rails (202) form a fan shape as a whole. The flange of the H-beam (1) is assembled and connected to any slide rail (202) in the matching slide rail group by high-strength flange bolts (12).

4. The adjustable-angle H-beam steel figure-eight brace node connection device according to claim 3, characterized in that: Three H-beams (1) are provided, and three sets of evenly distributed slide rails are opened on the metal disc (2) along the circumference.

5. The adjustable-angle H-beam steel figure-eight brace node connection device according to claim 1, characterized in that: It also includes a limiting disk (7), which is in the shape of a ring, and a number of limiting holes (701) are evenly opened along the circumference of the ring of the limiting disk (7); the limiting disk (7) is covered on the metal disc (2), and the limiting high-strength bolt (13) passes through the limiting disk (7) located on the surface of the two metal discs (2) in a direction parallel to the central axis.

6. A construction method for the adjustable-angle H-beam steel figure-eight brace node connection device according to any one of claims 1-5, characterized in that: Specifically, the following steps are included: Step S1: Use high-strength bolts to assemble the thin-walled shaft tube (3) and the shaft tube surround (4) into one piece to form the shaft tube; Step S2: The web plate connector pin (501) of the web plate connector (5) and the connector filler plate pin (601) of the connector filler (6) simultaneously extend into the gap formed by the thin-walled shaft cylinder (3) and the shaft cylinder surround (4). The filler plate (603) extends into the gap formed between the two connecting plates (504). The web plate connector and the filler plate are assembled into one piece using the high-strength bolts of the connector. Step S3: The web of the H-beam (1) extends between the two connecting plates (504) of the web connector (5), and the H-beam (1) and the connector are assembled into one piece using the web high-strength bolts (10); Step S4: Two metal discs (2) are installed on the two open ends of the thin-walled shaft cylinder (3). The two are coaxial and the connection of the two metal discs (2) is completed by using high-strength bolts (11). Step S5: Determine the angle of the figure-eight brace, align the slide rail (202) of the metal disc (2) with the flange of the matching H-beam (1), and use the flange high-strength bolts (12) to complete the connection between the H-beam (1) and the metal disc (2); Step S6: Install the limiting plate (7) on the outer side of the flange of the H-beam (1) and use the limiting high-strength bolts (13) to complete the assembly of the limiting plate (7) located at the two flanges of the H-beam.

Images