Large-span roof ring radial truss combined framework structure and installation method thereof

Abstract

The application discloses a large-span roof ring radial truss combined framework structure and a mounting method thereof, and the structure comprises an inner truss, an outer truss, a radial truss and a ring beam, a single-layer net shell one is arranged between the inner truss and the outer truss, a single-layer net shell two is arranged on the outer side of the outer truss, the single-layer net shell two is arranged between the ring beam and the outer truss, and the ring beam and the radial truss are fixedly connected. The connecting nodes between the single-layer net shell one and the inner truss, the connecting nodes between the single-layer net shell one and the outer truss and the connecting nodes between the single-layer net shell one and the radial truss all adopt plugboards, and the connecting nodes between the single-layer net shell two and the inner truss, the connecting nodes between the single-layer net shell two and the outer truss and the connecting nodes between the single-layer net shell two and the radial truss all adopt plugboards. The application can reserve sufficient node connecting space, increase the welding surface between nodes, thereby guaranteeing the reliability of installation between nodes, the force of a rod is borne on the plugboard, the force condition is simple, and a temporary support system of the ring beam and the inner truss is arranged.

Description

Technical Field

[0001] This invention belongs to the field of large-span steel structure technology, specifically relating to a large-span roof ring radial truss composite skeleton structure and its installation method. Background Technology

[0002] With the rapid development of the construction industry and the ever-changing technology, the demand for a series of public buildings such as stadiums, airport terminals, exhibition halls, and waiting halls is increasing. Unlike previous building structures, the architectural style requirements for these public buildings are becoming more beautiful and unique, resulting in irregular and curved roof structures. In order to meet the load-bearing characteristics of such roof structures, the roof often adopts a combination of circumferential radial trusses and single-layer grid shells.

[0003] The structure combining radial trusses and single-layer reticulated shells includes inner trusses, outer trusses, and radial trusses. A single-layer reticulated shell is provided between the inner and outer trusses, and also on the outer side of the outer truss. The connection nodes between the inner truss and the single-layer reticulated shell, the connection nodes between the outer truss and the single-layer reticulated shell, and the connection nodes between the radial truss and the single-layer reticulated shell are generally fixed by welding multiple members together. The stress conditions between the nodes are relatively complex, and when the structure is connected at high altitudes, insufficient space at the node connections prevents the insertion of members. Furthermore, before the structure is fully integrated, ground-based steel columns cannot serve as effective structural supports, leading to significant difficulties in on-site construction and installation. Summary of the Invention

[0004] The purpose of this invention is to solve the aforementioned technical problems existing in the prior art, and to provide a large-span roof ring-radial truss composite skeleton structure and its installation method. The connection nodes between the single-layer grid shell and the truss adopt insert plates, reserving sufficient space for node connection and increasing the welding surface between nodes, thereby ensuring the reliability of the installation between nodes. The members are subjected to force on the insert plates, and the stress situation is simple. At the same time, a temporary support system for the ring beam and inner truss is set up to provide temporary support for the steel structure, so as to ensure the safety of the structure before it is formed as a whole. Moreover, the inner steel structure is installed first, and then the outer steel structure is installed. A reasonable construction method is adopted to ensure the stable and precise installation of this type of structure.

[0005] To solve the above-mentioned technical problems, the present invention adopts the following technical solution:

[0006] A large-span roof ring-radial truss composite skeleton structure includes an inner truss, an outer truss, and radial trusses. The inner truss and the outer truss are both annular. The inner truss is positioned within a hole in the outer truss. A single-layer mesh shell (first layer) is provided between the inner and outer trusses, and a second single-layer mesh shell (second layer) is provided on the outer side of the outer truss. The radial trusses are positioned between the inner and outer trusses and are fixedly connected to both the first and second single-layer mesh shells. The structure is characterized by further including a ring beam, which is also annular. The second single-layer mesh shell is positioned between the ring beam and the outer truss, and the ring beam is fixedly connected to the radial trusses. Insert plates are used for the connection nodes between the first single-layer reticulated shell and the inner truss, the connection nodes between the first single-layer reticulated shell and the outer truss, and the connection nodes between the first single-layer reticulated shell and the radial truss. Insert plates are also used for the connection nodes between the second single-layer reticulated shell and the ring beam, the connection nodes between the second single-layer reticulated shell and the outer truss, and the connection nodes between the second single-layer reticulated shell and the radial truss.

[0007] Furthermore, both the inner and outer trusses adopt truss structures. The truss structure includes a lower chord, a web member, and an upper chord. The upper chord is welded into a ring shape at both ends, and the lower chord is welded into a ring shape at both ends. A single lower chord is located below the two upper chords.

[0008] Furthermore, the radial truss includes a second lower chord, a second web member, and a second upper chord. The second upper chord is welded at both ends and extends outward, and the second lower chord is welded at both ends and extends outward. A single section of the second lower chord is located below the two sections of the second upper chord.

[0009] Furthermore, reinforcing bars are installed between the inner truss and the radial truss, and between the outer truss and the radial truss. The reinforcing bars are fixed between the first upper chord and the second upper chord. The diameter of the reinforcing bar is larger than the diameter of the first upper chord and the diameter of the second upper chord.

[0010] Furthermore, both the single-layer reticulated shell one and the single-layer reticulated shell two adopt a reticulated shell structure, which includes steel pipes and hub nodes. The hub nodes are cylindrical in shape, and the steel pipes are welded to the outside of the hub nodes.

[0011] Furthermore, the hub joint has an internal cavity, and a stiffening plate is welded into the cavity.

[0012] An installation method for a large-span roof ring radial truss composite frame structure, characterized by comprising the following steps:

[0013] Step A: Divide the inner truss, outer truss, radial truss, single-layer reticulated shell one, and single-layer reticulated shell two into regions:

[0014] The inner truss is divided into four sub-units for assembly: NHJ1, NHJ2, NHJ3 and NHJ4.

[0015] The outer truss is divided into 7 sub-units for assembly, namely: WHJ1, WHJ2, WHJ3, WHJ4, WHJ5, WHJ6 and WHJ7.

[0016] The radial truss is divided into 7 sub-units for assembly, namely: JXHJ1, JXHJ2, JXHJ3, JXHJ4, JXHJ5, JXHJ6 and JXHJ7.

[0017] The single-layer reticulated shell is divided into 7 sub-units for overall assembly, namely: Unit 1, Unit 2, Unit 3, Unit 4, Unit 5, Unit 6 and Unit 7.

[0018] The single-layer reticulated shell is divided into 14 modular units for overall assembly, namely: Unit 8, Unit 9, Unit 10, Unit 11, Unit 12, Unit 13, Unit 14, Unit 15, Unit 16, Unit 17, Unit 18, Unit 19, Unit 20, and Unit 21.

[0019] Step B: Based on the construction drawings and the diameter of the circular tube of the ring beam, install a support frame on site that matches the diameter of the circular tube of the ring beam.

[0020] Step C: Based on the construction drawings and the diameters of the lower chord and upper chord of the inner truss, install a support frame 2 that conforms to the diameter on site.

[0021] Step D: Use a crane to lift the two sub-units NHJ1 and NHJ2 of the inner truss onto the support frame 2.

[0022] Step E: Select four sub-units of the radial truss, namely JXHJ1, JXHJ2, JXHJ3, and JXHJ4; select three sub-units of the outer truss, namely WHJ1, WHJ2, and WHJ3; simultaneously select three sub-units of the single-layer reticulated shell one, namely Unit 1, Unit 2, and Unit 3; and select six sub-units of the single-layer reticulated shell two, namely Unit 8, Unit 9, Unit 10, Unit 11, Unit 12, and Unit 13.

[0023] By using a crane, the radial truss sub-units JXHJ1, JXHJ2, JXHJ3, and JXHJ4 are installed on the inner truss sub-units in step D. An installation area is formed between two adjacent radial truss sub-units, resulting in three installation areas. For one installation area, a single single-layer reticulated shell unit is installed between two adjacent radial truss units. The single-layer reticulated shell unit is fixedly connected to the inner truss unit. Then, a single outer truss unit is installed between two adjacent radial truss units. The single outer truss unit is fixedly connected to the single-layer reticulated shell unit. Next, two single-layer reticulated shell units are installed between two adjacent radial truss units. The two single-layer reticulated shell units are fixedly connected to the outer truss unit. Then, the ring beam is hoisted onto the support frame and fixedly connected to the outer truss unit. At the same time, the ring beam is fixedly connected to the radial truss unit. Following the above construction method for all installation areas, the construction of all installation areas is completed.

[0024] Step F: Use a crane to lift the remaining two sub-units of the inner truss, NHJ3 and NHJ4, onto the support frame two.

[0025] Step G: Select the remaining 3 sub-units of the radial truss, namely JXHJ5, JXHJ6, and JXHJ7; select the 4 sub-units of the outer truss, namely WHJ4, WHJ5, WHJ6, and WHJ7; simultaneously select the 4 sub-units of the first single-layer reticulated shell, namely unit 4, unit 5, unit 6, and unit 7; and select the 8 sub-units of the second single-layer reticulated shell, namely unit 14, unit 15, unit 16, unit 17, unit 18, unit 19, unit 20, and unit 21.

[0026] By using a crane to lift and lower the radial truss sub-units JXHJ5, JXHJ6, and JXHJ7, they are installed on the inner truss sub-units in step F. An installation area is formed between two adjacent radial truss sub-units, resulting in four installation areas. For one installation area, a single single-layer reticulated shell unit is installed between two adjacent radial truss units. The single-layer reticulated shell unit is fixedly connected to the inner truss unit. Then, a single outer truss unit is installed between two adjacent radial truss units. The single outer truss unit is fixedly connected to the single-layer reticulated shell unit. Next, two single-layer reticulated shell units are installed between two adjacent radial truss units. The two single-layer reticulated shell units are fixedly connected to the outer truss unit. Then, the ring beam is hoisted onto the support frame and fixedly connected to the outer truss unit. At the same time, the ring beam is fixedly connected to the radial truss unit. Following the above construction method for all installation areas, the construction of all installation areas is completed.

[0027] Furthermore, the second support frame includes lattice columns and a support system. The support system includes H-beams, circular tube 1, and circular tube 2. The H-beams are fixed to the top of the lattice columns, and diagonal braces 1 are fixed between the H-beams and the lattice columns. Circular tube 2 and circular tube 1 are both fixed to the H-beams, and diagonal braces 2 are fixed between circular tube 1 and the H-beams. A single circular tube 2 is positioned between two circular tubes 1, and the length of circular tube 2 is less than the length of circular tube 1. The top of circular tube 1 is provided with a support seat 1, which has a slot 1 for placing the upper chord member 1. The top of circular tube 2 is provided with a support seat 2, which also has a slot 2 for placing the lower chord member 1.

[0028] Furthermore, the bottom of support base one is provided with threaded rod one, which is threadedly connected to a limit nut. Round tube one has an installation hole, and threaded rod one is vertically positioned in the installation hole. The limit nut is supported on the top of round tube one. Round tube two has a connecting hole, in which a spring is installed. The bottom of support base two has a guide rod, which is vertically positioned in the connecting hole and supported on the spring, thus compressing the spring. H-beam has a limit tube with a threaded hole, in which threaded rod two is threadedly connected. Adjusting nut is welded to threaded rod two. A support plate is located on top of threaded rod two, supporting the bottom of support base two. Support base one has two symmetrically arranged clamping structures, each including a moving plate and rollers. A connecting shaft is fixed to the moving plate, and rollers are mounted on the connecting shaft. Support base one has a through hole, in which the moving plate moves horizontally. The rollers are used to clamp the upper chord one. Support base one is threadedly connected to a locking bolt, which presses against the moving plate.

[0029] Furthermore, guy ropes are installed between the lattice columns and the ground.

[0030] The present invention, by adopting the above-described technical solution, has the following beneficial effects:

[0031] (1) The connection nodes between the single-layer reticulated shell 1 and the inner truss, the connection nodes between the single-layer reticulated shell 1 and the outer truss, and the connection nodes between the single-layer reticulated shell 1 and the radial truss of the present invention are all made of insert plates. The connection nodes between the single-layer reticulated shell 2 and the inner truss, the connection nodes between the single-layer reticulated shell 2 and the outer truss, and the connection nodes between the single-layer reticulated shell 2 and the radial truss of the present invention are all made of insert plates.

[0032] This design allows for the use of insert plates at the connection nodes between the single-layer reticulated shell and the truss, reserving sufficient space for node connections and increasing the welding surface between nodes. This ensures the reliability of the installation between nodes, and the members are subjected to forces on the insert plates, resulting in a simple stress situation.

[0033] (2) The present invention provides a ring beam on the outside of the second single-layer reticulated shell to ensure that the ends of the members of the second single-layer reticulated shell act on the same steel structure, making the entire composite frame structure more integrated. At the same time, during installation, the present invention provides a temporary support system for the ring beam and the inner truss to provide temporary support for the steel structure, thus ensuring the safety of the structure before it is fully integrated.

[0034] (3) The present invention divides the installation of the entire composite frame structure into two areas. First, the inner steel structure is installed, specifically: the two sub-units NHJ1 and NHJ2 of the inner truss; the four sub-units JXHJ1, JXHJ2, JXHJ3, and JXHJ4 of the radial truss; the three sub-units WHJ1, WHJ2, and WHJ3 of the outer truss; the three sub-units Unit 1, Unit 2, and Unit 3 of the single-layer reticulated shell; and the six sub-units Unit 8, Unit 9, Unit 10, Unit 11, Unit 12, and Unit 13 of the single-layer reticulated shell.

[0035] Next, the outer steel structure is installed, specifically: the remaining two sub-units of the inner truss, NHJ3 and NHJ4; the remaining three sub-units of the radial truss, JXHJ5, JXHJ6, and JXHJ7; the four sub-units of the outer truss, WHJ4, WHJ5, WHJ6, and WHJ7; the four sub-units of the single-layer reticulated shell I, Unit 4, Unit 5, Unit 6, and Unit 7; and the eight sub-units of the single-layer reticulated shell II, Unit 14, Unit 15, Unit 16, Unit 17, Unit 18, Unit 19, Unit 20, and Unit 21.

[0036] During the installation of the inner steel structure, the outer steel structure is not constructed yet, leaving ample operating space. The inner steel structure is assembled in sections to form a stable structure. The outer steel structure is then installed based on the inner steel structure, which serves as a reference and support for the outer steel structure. Employing appropriate construction methods ensures the stable and precise installation of this type of structure. Attached Figure Description

[0037] The present invention will be further described below with reference to the accompanying drawings:

[0038] Figure 1 This is a schematic diagram of a large-span roof ring radial truss composite skeleton structure according to the present invention;

[0039] Figure 2 This is a schematic diagram of the external truss structure in this invention;

[0040] Figure 3 This is a schematic diagram of the internal truss structure in this invention;

[0041] Figure 4 This is a schematic diagram of the radial truss structure in this invention;

[0042] Figure 5This is a schematic diagram of the structure of the single-layer reticulated shell in this invention;

[0043] Figure 6 This is a schematic diagram of the internal structure of the hub node in this invention;

[0044] Figure 7 This is a schematic diagram of the structure of the single-layer reticulated shell II in this invention;

[0045] Figure 8 This is a schematic diagram of the structure of the present invention, which divides the inner truss into four sub-units;

[0046] Figure 9 This is a schematic diagram of the structure of the present invention, which divides the outer truss into 7 sub-units;

[0047] Figure 10 This is a schematic diagram of the structure of the present invention, which divides the radial truss into 7 sub-units;

[0048] Figure 11 This is a schematic diagram of the structure of the present invention, which divides a single-layer reticulated shell into 7 sub-units and divides a single-layer reticulated shell into 14 sub-units.

[0049] Figure 12 This is a structural schematic diagram of one segment unit of the suspended inner truss of the present invention;

[0050] Figure 13 This is a schematic diagram of the structure of two segmented units of the suspended inner truss of the present invention;

[0051] Figure 14 This is a schematic diagram of the structure of the four segmented units of the radial truss of the present invention;

[0052] Figure 15 This is a schematic diagram of the structure of the present invention, in which a single single-layer reticulated shell is installed between the block units of two adjacent radial trusses;

[0053] Figure 16 This is a schematic diagram of the structure of the present invention, in which the segmented units of a single external truss are installed between the segmented units of two adjacent radial trusses;

[0054] Figure 17 This is a schematic diagram of the structure of the present invention, in which two single-layer reticulated shells are installed between the block units of two adjacent radial trusses;

[0055] Figure 18 This is a schematic diagram of the structure of the present invention, showing the ring beam being hoisted onto the support frame.

[0056] Figure 19 This is a structural diagram illustrating the construction of the three installation areas of the present invention;

[0057] Figure 20This is a schematic diagram of the remaining two sub-units of the suspended inner truss of the present invention;

[0058] Figure 21 This is a schematic diagram of the structure of the remaining three sub-units of the radial truss of the present invention;

[0059] Figure 22 This is a schematic diagram of the structure for completing the construction of four installation areas of the present invention;

[0060] Figure 23 This is a structural diagram illustrating the completion of construction in all installation areas according to the present invention;

[0061] Figure 24 This is a schematic diagram of the structure of support frame two in this invention;

[0062] Figure 25 This is a schematic diagram of the support system in this invention;

[0063] Figure 26 This is a schematic diagram of the support base of the present invention, which has two sets of symmetrically arranged clamping structures.

[0064] Figure 27 This is a schematic diagram of the structure of the support base one in this invention;

[0065] Figure 28 This is a schematic diagram of the clamping structure in this invention;

[0066] Figure 29 This is a schematic diagram of the structure of the second support base in this invention;

[0067] Figure 30 This is a schematic diagram of the connection between the limiting tube and the threaded rod in this invention;

[0068] Figure 31 This is a schematic diagram of the structure in this invention where the guide rod is supported on the spring;

[0069] Figure 32 This is a schematic diagram of the support frame one in the present invention.

[0070] In the diagram, 1-inner truss; 2-outer truss; 3-radial truss; 4-single-layer reticulated shell one; 5-single-layer reticulated shell two; 6-ring beam; 7-lower chord one; 8-upper chord one; 9-web member one; 10-insertion plate; 11-lower chord two; 12-upper chord two; 13-web member two; 14-slot three; 15-strengthening rod; 16-hub node; 17-steel pipe; 18-cavity; 19-stiffening plate; 20-crane; 21-support frame two; 22-support frame one; 23-lattice column; 24-H-beam; 25-circular pipe one; 26-support seat two; 27-inclined 28-Slanted brace 1; 29-Guide rope; 30-Support base 1; 31-Slot 1; 32-Pressure structure; 33-Threaded rod 1; 34-Limit nut; 35-Mounting hole; 36-Round tube 2; 37-Connecting hole; 38-Limit tube; 39-Threaded rod 2; 40-Support plate; 41-Moving plate; 42-Roller; 43-Locking bolt; 44-Through hole; 45-Connecting shaft; 46-Slot 2; 47-Guide rod; 48-Threaded hole; 49-Adjusting nut; 50-Spring; 51-Vertical rod; 52-Diagonal rod; 53-Support base 3. Detailed Implementation

[0071] like Figures 1 to 32 As shown, this invention discloses a large-span roof ring-radial truss composite skeleton structure, comprising an inner truss 1, an outer truss 2, a radial truss 3, and a ring beam 6. The inner truss 1 and the outer truss 2 are both annular, with the inner truss 1 positioned within a hole in the outer truss 2. A single-layer mesh shell 4 is provided between the inner truss 1 and the outer truss 2, and a second single-layer mesh shell 5 is provided on the outer side of the outer truss 2. The radial truss 3 is positioned between the inner truss 1 and the outer truss 2, and is fixedly connected to both the first and second single-layer mesh shells. The ring beam 6 is annular, and the second single-layer mesh shell 5 is positioned between the ring beam 6 and the outer truss 2, with the ring beam 6 and the radial truss 3 fixedly connected. The connection nodes between the single-layer reticulated shell 4 and the inner truss 1, the connection nodes between the single-layer reticulated shell 4 and the outer truss 2, and the connection nodes between the single-layer reticulated shell 4 and the radial truss 3 all use insert plates 10. The connection nodes between the single-layer reticulated shell 5 and the ring beam 6, the connection nodes between the single-layer reticulated shell 5 and the outer truss 2, and the connection nodes between the single-layer reticulated shell 5 and the radial truss 3 all use insert plates 10.

[0072] Both the inner truss 1 and the outer truss 2 adopt a truss structure. The truss structure includes an interconnected lower chord 7, a web member 9, and an upper chord 8. The upper chord 8 and the lower chord 7 are welded into a circular shape at both ends. A single lower chord 7 is located below the two upper chord 8 sections. The radial truss 3 includes an interconnected lower chord 11, a web member 13, and an upper chord 12. The upper chord 12 and the lower chord 11 are welded outwards at both ends. A single lower chord 11 is located below the two upper chord 12 sections.

[0073] A reinforcing rod 15 is provided between the inner truss 1 and the radial truss 3, and between the outer truss 2 and the radial truss 3. The reinforcing rod 15 is fixed between the upper chord 1 8 and the upper chord 2 12. The diameter of the reinforcing rod 15 is larger than the diameter of the upper chord 1 8 and the diameter of the reinforcing rod 15 is larger than the diameter of the upper chord 2 12.

[0074] Both single-layer reticulated shell 1 (4) and single-layer reticulated shell 2 (5) adopt a reticulated shell structure. The reticulated shell structure includes a steel pipe 17 and a hub node 16. The hub node 16 is cylindrical, and the steel pipe 17 is welded to the outside of the hub node 16. The hub node 16 has a cavity 18 inside, and five stiffening plates 19 are welded into the cavity 18. One of the stiffening plates 19, the middle one, is set along the diameter of the hub node 16, and the other four stiffening plates 19 are welded to the side of the middle stiffening plate 19.

[0075] An installation method for a large-span roof ring radial truss composite frame structure includes the following steps:

[0076] Step A: Divide the inner truss 1, outer truss 2, radial truss 3, single-layer reticulated shell 1 4, and single-layer reticulated shell 2 5 into regions:

[0077] like Figure 8 As shown, the inner truss 1 is divided into 4 sub-units for assembly, namely: NHJ1, NHJ2, NHJ3 and NHJ4.

[0078] like Figure 9 As shown, the outer truss is divided into 7 sub-units for assembly, namely: WHJ1, WHJ2, WHJ3, WHJ4, WHJ5, WHJ6 and WHJ7.

[0079] like Figure 10 As shown, the radial truss is divided into 7 sub-units for assembly, namely: JXHJ1, JXHJ2, JXHJ3, JXHJ4, JXHJ5, JXHJ6 and JXHJ7.

[0080] like Figure 11 As shown, the single-layer reticulated shell 1 (unit 4) is assembled into 7 sub-units: Unit 1, Unit 2, Unit 3, Unit 4, Unit 5, Unit 6, and Unit 7. The single-layer reticulated shell 2 (unit 5) is assembled into 14 sub-units: Unit 8, Unit 9, Unit 10, Unit 11, Unit 12, Unit 13, Unit 14, Unit 15, Unit 16, Unit 17, Unit 18, Unit 19, Unit 20, and Unit 21.

[0081] Step B: Based on the construction drawings and the diameter of the circular tube of the ring beam 6, install a support frame 22 on site that conforms to the diameter of the circular tube of the ring beam 6.

[0082] Step C: Based on the construction drawings and the diameters of the lower chord 7 and upper chord 8 in the inner truss 1, install a support frame 21 with the same diameter on site.

[0083] Step D: Use crane 20 to lift the two sub-units NHJ1 and NHJ2 of the inner truss 1 onto the support frame 21.

[0084] Step E: Select four sub-units of radial truss 3, namely JXHJ1, JXHJ2, JXHJ3, and JXHJ4; select three sub-units of outer truss, namely WHJ1, WHJ2, and WHJ3; simultaneously select three sub-units of single-layer reticulated shell 1, namely Unit 1, Unit 2, and Unit 3; and select six sub-units of single-layer reticulated shell 2, namely Unit 8, Unit 9, Unit 10, Unit 11, Unit 12, and Unit 13.

[0085] By using crane 20 to lift and lower the radial truss 3, the segmented units JXHJ1, JXHJ2, JXHJ3, and JXHJ4 are installed on the segmented units of the inner truss 1 in step D. An installation area is formed between two adjacent segmented units of the radial truss 3, forming three installation areas: the area between JXHJ1 and JXHJ2, the area between JXHJ2 and JXHJ3, and the area between JXHJ3 and JXHJ4. For one installation area, a single single-layer reticulated shell 4 segment unit is installed between two adjacent radial truss 3 segment units. The single-layer reticulated shell 4 segment unit is fixedly connected to the inner truss 1 segment unit. Then, a single outer truss 2 segment unit is installed between two adjacent radial truss 3 segment units. The single outer truss 2 segment unit is fixedly connected to the single-layer reticulated shell 4 segment unit. Then, two single-layer reticulated shell 5 segment units are installed between two adjacent radial truss 3 segment units. The two single-layer reticulated shell 5 segment units are fixedly connected to the outer truss 2 segment units. Then, the ring beam 6 is hoisted onto the support frame 22. The ring beam 6 is then fixedly connected to the outer truss 2 segment unit, and simultaneously fixedly connected to the radial truss 3 segment unit. Following the above construction method for the installation area, the construction of all installation areas is completed.

[0086] Step F: Use crane 20 to lift the remaining two sub-units NHJ3 and NHJ4 of the inner truss 1 onto the support frame 21;

[0087] Step G: Select the remaining 3 sub-units of radial truss 3, namely JXHJ5, JXHJ6, and JXHJ7; select the 4 sub-units of outer truss 2, namely WHJ4, WHJ5, WHJ6, and WHJ7; simultaneously select the 4 sub-units of single-layer reticulated shell 4, namely unit 4, unit 5, unit 6, and unit 7; and select the 8 sub-units of single-layer reticulated shell 5, namely unit 14, unit 15, unit 16, unit 17, unit 18, unit 19, unit 20, and unit 21.

[0088] By using crane 20 to lift and lower the radial truss 3, the segmented units JXHJ5, JXHJ6, and JXHJ7 are installed on the segmented units of the inner truss 1 in step F. An installation area is formed between two adjacent segmented units of the radial truss 3, forming four installation areas: the area between JXHJ7 and JXHJ1, the area between JXHJ6 and JXHJ7, the area between JXHJ5 and JXHJ6, and the area between JXHJ4 and JXHJ5. For one installation area, a single single-layer reticulated shell 4 segment unit is installed between two adjacent radial truss 3 segment units. The single-layer reticulated shell 4 segment unit is fixedly connected to the inner truss 1 segment unit. Then, a single outer truss 2 segment unit is installed between two adjacent radial truss 3 segment units. The single outer truss 2 segment unit is fixedly connected to the single-layer reticulated shell 4 segment unit. Then, two single-layer reticulated shell 5 segment units are installed between two adjacent radial truss 3 segment units. The two single-layer reticulated shell 5 segment units are fixedly connected to the outer truss 2 segment units. Then, the ring beam 6 is hoisted onto the support frame 22. The ring beam 6 is then fixedly connected to the outer truss 2 segment unit, and simultaneously fixedly connected to the radial truss 3 segment unit. Following the above construction method for the installation area, the construction of all installation areas is completed.

[0089] The present invention provides a specific design for the second support frame 21, which includes a lattice column 23 and a support system. The overall height of the lattice column 23 is set according to the construction requirements. The lattice column 23 is fixed to the concrete foundation on the ground by bolts. A guy rope 29 is provided between the lattice column 23 and the ground. The guy rope 29 is made of φ22mm steel wire rope. In order to increase the firmness of the guy rope 29, the guy rope 29 is set on the concrete and fixed with wooden anchors.

[0090] The support system includes H-beams 24, circular tube 1 25, and circular tube 2 36. H-beams 24 are fixed to the top of lattice columns 23, and diagonal braces 28 are fixed between H-beams 24 and lattice columns 23 to increase the connection strength. Circular tube 2 36 and circular tube 1 25 are both fixed to H-beams 24, and diagonal braces 27 are fixed between circular tube 1 25 and H-beams 24 to increase the connection strength. A single circular tube 2 36 is positioned between two circular tubes 1 25, and the length of circular tube 2 36 is less than the length of circular tube 1 25. A support seat 30 with a slot 31 is provided at the top of circular tube 1 25, and a support seat 26 with a slot 46 is provided at the top of circular tube 2 36. When the inner truss 1 is hoisted onto the support frame 21, the upper chord 8 is placed in the slot 31 and the lower chord 7 is placed in the slot 46, which increases the stability of the temporary support for the inner truss 1.

[0091] The bottom of the support base 30 is provided with a threaded rod 33, which is threadedly connected to a limit nut 34. The round tube 25 is provided with a mounting hole 35, and the threaded rod 33 is vertically installed in the mounting hole 35. The limit nut 34 is supported on the top of the round tube 25. By adjusting the position of the limit nut 34 on the threaded rod 33, the length of the threaded rod 33 can be changed, thereby adjusting the height of the support base 30. The second round tube 36 is provided with a connecting hole 37, and a spring 50 is provided in the connecting hole 37. The bottom of the second support seat 26 is provided with a guide rod 47. When the upper chord 8 is provided in the slot 31 and the lower chord 7 is provided in the slot 46, the guide rod 47 is vertically provided in the connecting hole 37 and supported on the spring 50, so that the spring 50 is compressed, which can play a buffering role in the hoisting of the inner truss 1. The height of the first support seat 30 can be adjusted first to position and support the upper chord 8, and then the height of the second support seat 26 can be adjusted so that the second support seat 26 supports the lower chord 7, avoiding the situation where the round tube 25 is damaged due to excessive force due to the false contact between the second support seat 26 and the lower chord 7. H-beam 24 is equipped with a limiting tube 38, which has a threaded hole 48. A threaded rod 39 is threaded into the threaded hole 48, and an adjusting nut 49 is welded to the threaded rod 39. A support plate 40 is provided on the top of the threaded rod 39, which supports the bottom of the support base 26. By applying force to the adjusting nut 49, the length of the threaded rod 39 extending out of the limiting tube 38 can be adjusted, thereby adjusting the height of the support base 26. By adjusting the height of the support base 30 and the support base 26, the support frame 21 can support different internal truss 1 sub-units with different height differences, and can stably support internal truss 1 sub-units of a certain weight, ensuring the safe installation of the internal truss 1.

[0092] The support base 30 is equipped with two sets of symmetrically arranged clamping structures 32. Each clamping structure 32 includes a movable plate 41 and rollers 42. The movable plate 41 is fixed with a connecting shaft 45, and the rollers 42 are mounted on the connecting shaft 45. The support base 30 has a through hole 44, in which the movable plate 41 is positioned and moves horizontally. The rollers 42 are used to clamp the upper chord member 8. The support base 30 is threadedly connected with locking bolts 43, which tighten the movable plate 41, preventing the inner truss 1 from falling from a height and improving safety. Moreover, this clamping structure 32 causes less damage to the upper chord member 8 and can limit the movement of upper chord members 8 of different diameters, making it widely applicable.

[0093] The support frame 22 includes a vertical rod 51 and an inclined rod 52. The inclined rod 52 is fixed at an angle to the vertical rod 51 and is fixed to the concrete foundation on the ground. The top of the vertical rod 51 is provided with a support seat 3 53, which has a slot 3 14. When the ring beam 6 is hoisted onto the support frame 22, the ring beam 6 is placed in the slot 3 14, increasing the stability of the temporary support for the ring beam 6.

[0094] The above are merely specific embodiments of the present invention, but the technical features of the present invention are not limited thereto. Any simple changes, equivalent substitutions, or modifications made based on the present invention to solve essentially the same technical problems and achieve essentially the same technical effects are all covered within the protection scope of the present invention.

Claims

1. An installation method for a large-span roof ring-radial truss composite skeleton structure, the large-span roof ring-radial truss composite skeleton structure comprising an inner truss, an outer truss, a radial truss, and a ring beam, wherein the inner truss is circular, the outer truss is circular, the inner truss is disposed in a hole in the outer truss, a single-layer mesh shell is provided between the inner truss and the outer truss, a second single-layer mesh shell is provided on the outer side of the outer truss, the radial truss is disposed between the inner truss and the outer truss, and the radial truss is fixedly connected to the first single-layer mesh shell and the second single-layer mesh shell; the ring beam is circular, the second single-layer mesh shell is disposed between the ring beam and the outer truss, and the ring beam is fixedly connected to the radial truss; the connection nodes between the first single-layer mesh shell and the inner truss, the connection nodes between the first single-layer mesh shell and the outer truss, and the connection nodes between the first single-layer mesh shell and the outer truss are also described. The connection nodes between the outer trusses, the connection nodes between the single-layer reticulated shell and the radial truss, all use insert plates. The connection nodes between the single-layer reticulated shell and the ring beam, the connection nodes between the single-layer reticulated shell and the outer truss, and the connection nodes between the single-layer reticulated shell and the radial truss all use insert plates. The inner truss and the outer truss both adopt truss structures. The truss structure includes a lower chord, a web member, and an upper chord. The upper chord is welded into a circular shape at both ends, and the lower chord is welded into a circular shape at both ends. A single section of the lower chord is located below the two sections of the upper chord. The radial truss includes a lower chord, a web member, and an upper chord. The upper chord is welded outward at both ends, and the lower chord is welded outward at both ends. A single section of the lower chord is located below the two sections of the upper chord. Its features are, Includes the following steps: Step A: Divide the inner truss, outer truss, radial truss, single-layer reticulated shell one, and single-layer reticulated shell two into regions: The internal truss is divided into four sub-units for assembly: NHJ1, NHJ2, NHJ3 and NHJ4. The external truss is divided into 7 sub-units for assembly, namely: WHJ1, WHJ2, WHJ3, WHJ4, WHJ5, WHJ6 and WHJ7; The radial truss is divided into 7 sub-units and assembled into frames, namely: JXHJ1, JXHJ2, JXHJ3, JXHJ4, JXHJ5, JXHJ6 and JXHJ7; The single-layer reticulated shell is divided into 7 sub-units and assembled as a whole, namely: Unit 1, Unit 2, Unit 3, Unit 4, Unit 5, Unit 6 and Unit 7; The single-layer reticulated shell is divided into 14 sub-units and assembled as a whole, namely: Unit 8, Unit 9, Unit 10, Unit 11, Unit 12, Unit 13, Unit 14, Unit 15, Unit 16, Unit 17, Unit 18, Unit 19, Unit 20, and Unit 21. Step B: Based on the construction drawings and the diameter of the circular tube of the ring beam, install a support frame on site that matches the diameter of the circular tube of the ring beam. Step C: Based on the construction drawings and the diameters of the lower chord and upper chord of the inner truss, install a support frame 2 that conforms to the diameter on site. Step D: Use a crane to lift the two sub-units NHJ1 and NHJ2 of the inner truss onto the support frame 2; Step E: Select 4 sub-units of the radial truss, namely JXHJ1, JXHJ2, JXHJ3, and JXHJ4; select 3 sub-units of the outer truss, namely WHJ1, WHJ2, and WHJ3; simultaneously select 3 sub-units of the single-layer reticulated shell one, namely Unit 1, Unit 2, and Unit 3; and select 6 sub-units of the single-layer reticulated shell two, namely Unit 8, Unit 9, Unit 10, Unit 11, Unit 12, and Unit 13. Using a crane, the radial truss sub-units JXHJ1, JXHJ2, JXHJ3, and JXHJ4 are installed onto the inner truss sub-units in step D. An installation area is formed between adjacent radial truss sub-units, resulting in three installation areas. For one of these installation areas, a single sub-unit of the single-layer reticulated shell is installed between adjacent radial truss sub-units. The single-layer reticulated shell sub-unit and the inner truss sub-unit are fixedly connected. Then, a single sub-unit of the outer truss is installed between adjacent outer truss sub-units. Between the segmented units of the radial truss, the segmented units of a single outer truss and the segmented units of the single-layer reticulated shell one are fixedly connected. Then, the segmented units of two single-layer reticulated shell two are installed between the segmented units of two adjacent radial trusses. The segmented units of two single-layer reticulated shell two are fixedly connected to the segmented units of the outer truss. Then, the ring beam is hoisted onto the support frame one, and the ring beam is fixedly connected to the segmented units of the outer truss. At the same time, the ring beam is fixedly connected to the segmented units of the radial truss. Following the construction method of the above installation area, the construction of the three installation areas is completed. Step F: Use a crane to lift the remaining two sub-units of the inner truss, NHJ3 and NHJ4, onto the support frame two; Step G: Select the remaining 3 sub-units of the radial truss, namely JXHJ5, JXHJ6, and JXHJ7; select the 4 sub-units of the outer truss, namely WHJ4, WHJ5, WHJ6, and WHJ7; simultaneously select the 4 sub-units of the single-layer reticulated shell one, namely unit four, unit five, unit six, and unit seven; and select the 8 sub-units of the single-layer reticulated shell two, namely unit fourteen, unit fifteen, unit sixteen, unit seventeen, unit eighteen, unit nineteen, unit twentieth, and unit twenty-one. Using a crane, the radial truss sub-units JXHJ5, JXHJ6, and JXHJ7 are installed onto the inner truss sub-units in step F. An installation area is formed between adjacent radial truss sub-units, resulting in four installation areas. For one of these installation areas, a single sub-unit of the single-layer reticulated shell is installed between adjacent radial truss sub-units. The single-layer reticulated shell sub-unit and the inner truss sub-unit are fixedly connected. Then, a single sub-unit of the outer truss is installed between adjacent radial truss sub-units. Between the segmented units of the frame, the segmented units of a single outer truss and the segmented units of the first single-layer grid shell are fixedly connected. Then, the segmented units of the second single-layer grid shell are installed between the segmented units of two adjacent radial trusses. The segmented units of the second single-layer grid shell are fixedly connected to the segmented units of the outer truss. Then, the ring beam is hoisted onto the first support frame, and the ring beam is fixedly connected to the segmented units of the outer truss. At the same time, the ring beam is fixedly connected to the segmented units of the radial truss. Following the construction method of the above installation area, the construction of all installation areas is completed.

2. The installation method of a large-span roof ring radial truss composite frame structure according to claim 1, characterized in that: The second support frame includes a lattice column and a support system. The support system includes an H-beam, a first round tube, and a second round tube. The H-beam is fixed to the top of the lattice column. A diagonal brace is fixed between the H-beam and the lattice column. The second round tube and the first round tube are both fixed to the H-beam. A diagonal brace is fixed between the first round tube and the H-beam. A single second round tube is placed between two first round tubes. The length of the second round tube is less than the length of the first round tube. The top of the first round tube is provided with a first support seat. The first support seat has a first slot for placing the first upper chord. The top of the second round tube is provided with a second support seat. The second support seat has a second slot for placing the first lower chord.

3. The installation method of a large-span roof ring radial truss composite frame structure according to claim 2, characterized in that: The bottom of the first support base is provided with a threaded rod, which is threadedly connected to a limit nut. The first round tube is provided with a mounting hole, in which the threaded rod is vertically positioned. The limit nut is supported on the top of the first round tube. The second round tube is provided with a connecting hole, in which a spring is provided. The bottom of the second support base is provided with a guide rod, which is vertically positioned in the connecting hole and supported on the spring, thus compressing the spring. The H-beam is provided with a limit tube, which is provided with a threaded hole, in which the second threaded rod is threadedly connected. The threaded rod two is welded with an adjusting nut, and a support plate is provided at the top of the threaded rod two, which supports the bottom of the support seat two; the support seat one is provided with two sets of symmetrically arranged clamping structures, each clamping structure including a moving plate and rollers, the moving plate being fixed with a connecting shaft, the rollers being disposed on the connecting shaft, the support seat one having a through hole, the moving plate being disposed in the through hole and moving horizontally within the through hole, the rollers being used to clamp the upper chord rod one, and the support seat one being threadedly connected with a locking bolt, the locking bolt pressing against the moving plate.

4. The installation method of a large-span roof ring radial truss composite frame structure according to claim 2, characterized in that: Guy ropes are installed between the lattice column and the ground.

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