A prefabricated lifting integrated construction method for super-large diameter ventilation ducts in aviation hangars

Abstract

The present invention relates to an integrated construction method for prefabrication and lifting of super-large diameter ventilation ducts in a hangar, which can effectively deal with the problem that the high-altitude grid that appears during the construction of the hangar causes great difficulties in the installation of super-large diameter air ducts, and formulates corresponding treatment measures: the present invention uses BIM technology to carry out in-depth design and precise segmentation, so that the large-diameter air duct is highly consistent with the grid structure during the prefabrication and installation process to avoid collision, prefabricates the large-diameter air duct in advance and reasonably arranges the process of assembling multiple sections of air supply ducts, which can reduce the construction difficulty, significantly improve the construction efficiency, save construction period and cost, and then performs graded loading and overall lifting under the guidance of computer simulation to ensure the safety and stability of the construction. This comprehensive method realizes efficient, safe and economical prefabrication and lifting integrated construction of super-large diameter ventilation ducts in a grid.

Description

Technical Field

[0001] The invention relates to the technical field of building construction, and in particular to a prefabricated lifting integrated construction method for an ultra-large diameter ventilation duct grid in an aviation hangar. Background Art

[0002] An aviation hangar is a large building facility used to park, maintain and repair aircraft, usually located at an airport or aviation base. The design and construction of an aviation hangar needs to take into account many factors to meet the requirements of safe storage and efficient maintenance of aircraft. Therefore, the structure of the aviation hangar needs to have sufficient space and height to accommodate aircraft of various types and sizes, and usually adopts steel structure to ensure the stability and durability of the hangar.

[0003] Currently, during the construction of an aviation hangar, the installation of electromechanical pipelines in the large steel structure grid on the top faces construction problems such as limited high-altitude operation space, complex environment, and high working surface. In particular, the high-altitude grid has caused great difficulties in the installation of ultra-large diameter air ducts. The traditional installation process is to lay a full-height frame or use a climbing vehicle, boom truck, etc. as an operating platform after the steel structure grid is in place, and then use a winch to hoist the air duct to the high altitude for installation. However, this type of construction method has a long installation period and high construction cost, and is not suitable for the construction of electromechanical pipelines such as large diameter or dense pipelines. During the construction of an aviation hangar, it is inconvenient to install ultra-large diameter air ducts in the high-altitude grid.

[0004] Therefore, those skilled in the art provide a prefabricated lifting integrated construction method for ultra-large diameter ventilation ducts in an aviation hangar grid to solve the problems raised in the above-mentioned background technology. Summary of the invention

[0005] In order to solve the problem of inconvenience in installing extra-large diameter air ducts in a high-altitude grid during the construction of an aviation hangar as recorded in the background technology, the present invention provides an integrated construction method for prefabricating and lifting extra-large diameter ventilation ducts in a grid of an aviation hangar.

[0006] The present application provides an integrated construction method for prefabricating and lifting large diameter ventilation ducts in a hangar using the following technical solutions:

[0007] A method for prefabricating and hoisting an integrated construction method for super-large diameter ventilation ducts in a hangar. During the construction of the hangar, the method for prefabricating and hoisting an integrated construction method for super-large diameter ventilation ducts in a hangar comprises the following steps:

[0008] Step 1: Establish the BIM model of the high-altitude grid and the overall large-diameter air duct. According to the upper and lower chords in the grid and the vein direction of multiple webs, the large-diameter air duct is highly matched with the upper and lower chord structures of the grid, and a drawing is issued;

[0009] Step 2: According to the BIM drawings, the entire grid and the overall large-diameter air duct are split and numbered to form the pipe disassembly drawing number. According to the installation and construction sequence of the steel structure, the production sequence of the multiple air supply pipe sections split from the large-diameter air duct is determined, and the selection of the hanger is determined;

[0010] Step 3: Set up the grid according to the drawings, weld and fix multiple hangers at the bottom of the upper chord, and ensure that multiple hangers are on the same horizontal plane, transfer multiple air supply pipe sections to the bottom of the two hangers in the grid, use a hand chain hoist to pull multiple air supply pipe sections to the required height and position for installation, and connect the air supply pipe sections. After the connection is completed, fix the air supply pipe and the hanger through the air supply pipe hanging assembly, install the air duct valve between adjacent air supply pipe sections as required, and fix it on the hanger through the air duct valve hanging assembly;

[0011] Step 4: Based on the reaction force values ​​of each lifting point calculated by computer simulation, implement graded loading of the lifting unit. Under normal circumstances, the grid and large-diameter air duct are lifted and installed as a whole.

[0012] By adopting the above technical solution and deepening the design through BIM technology, the installation length of large-diameter and high-weight air ducts will not be affected by the space in the grid cells. The large-diameter air ducts in the grid can be split and numbered. Through segmented design and reasonable arrangement of the assembly process of multiple sections of air supply ducts, a large amount of mechanical costs caused by lifting can be reduced. In addition, by prefabricating and installing large-diameter air ducts on the ground in advance, constructing them synchronously with the grid and lifting them as an integrated whole, the efficiency of prefabrication and integrated construction of ultra-large-diameter ventilation ducts in the aviation hangar grid can be greatly improved.

[0013] Preferably, the air supply pipe hanging assembly includes a lifting ring sleeved on the outer wall of the air supply pipe, U-shaped buckles are provided on both sides of the outer wall of the lifting ring, a lifting rope is movably connected to the U-shaped buckle, and the top end of the lifting rope is movably connected to the hanger.

[0014] By adopting the above technical solution, the lifting ring can be hung on the bottom end of the lifting rope through the U-shaped buckles on both sides of the lifting ring, and the air supply pipe inserted into the lifting ring can be hung and fixed by hanging the top end of the lifting rope on the hanger.

[0015] Preferably, the air supply pipe hanging assembly includes a circular pipe clamp clamped on the outer wall of the air supply pipe, and both sides of the outer wall of the circular pipe clamp are fixedly connected with hanging rods, and the top end of the hanging rod is fixedly connected to the hanger.

[0016] By adopting the above technical solution, the circular pipe clamp is installed on the outer wall of the air supply pipe, and hangers are fixedly connected to both sides of the outer wall of the circular pipe clamp. By welding the top of the hanger to the hanger, the air supply pipe can be hoisted and fixed.

[0017] Preferably, the air supply pipe hanging assembly includes a steel beam located below the air supply pipe, connecting steel bars are fixedly connected to both ends of the upper surface of the steel beam, the top of the connecting steel bar is fixedly connected to the hanger, a pad is fixedly connected to the upper surface of the steel beam, the air supply pipe is located on the pad, a U-shaped pipe clamp is fixedly connected to the steel beam, and the air supply pipe is located inside the U-shaped pipe clamp.

[0018] By adopting the above technical solution, two connecting steel bars are fixedly installed at the two ends of the steel beam to form a U-shaped bracket. The air supply pipe can be supported by the U-shaped bracket, and the pad can be placed between the air supply pipe and the steel beam. The U-shaped pipe clamp is fixed on the steel beam to fix the installation position of the air supply pipe.

[0019] Preferably, the upper chord and the lower chord have the same structure, the plurality of webs are arranged obliquely, and the two ends are respectively welded between the upper chord and the lower chord, the upper chord includes a plurality of chord balls and a plurality of chord rods on the same horizontal plane, the end of the chord rod is fixedly connected to the outer wall of the chord ball, the end of the web away from the lower chord is fixedly connected to the outer wall of the chord ball, and one side of the hanger is fixedly connected to the outer wall of the chord ball.

[0020] By adopting the above technical solution, the chord ball can connect and fix the chord rod, and the chord ball is designed to be spherical or similar in shape, so that multiple chord rods and web rods can be fixed at this connection point, ensuring a reasonable angle and tight connection between each rod.

[0021] Preferably, the air supply pipe comprises a pipe body, an outer wall of the pipe body is fixedly connected to a heat-insulating layer, and an outer wall of the heat-insulating layer is fixedly connected to a heat-insulating shell.

[0022] By adopting the above technical solution, the pipe body is responsible for conveying air, the thermal insulation layer can prevent the pipe body from ensuring the temperature of the conveyed air is stable, and the thermal insulation shell can provide additional protection for the thermal insulation layer.

[0023] Preferably, the air duct valve hanging assembly includes a crossbeam located below the air duct valve, both ends of the upper surface of the crossbeam are fixedly connected with V-shaped hanging rods, the top end of the V-shaped hanging rod is fixedly connected with a lifting ear, and the lifting ear is movably connected to the hanger.

[0024] By adopting the above technical solution, the crossbeam can be hoisted on the hanger through the cooperation of the V-shaped hangers at both ends of the crossbeam and the lifting ears installed on the V-shaped hangers, so that the air duct valve can be hoisted and supported.

[0025] Preferably, a mounting groove is provided on the upper surface of the crossbeam, an adjusting assembly is arranged inside the mounting groove, a fixing plate is symmetrically fixedly connected to the upper surface of the adjusting assembly, and the air duct valve is located between the symmetrically arranged fixing plates.

[0026] By adopting the above technical solution, the rotating adjustment component can adjust the symmetrically arranged fixed plates to move and clamp the air duct valve, thereby limiting the position of the air duct valve on the beam.

[0027] Preferably, the adjustment assembly includes a butterfly-shaped adjustment head located on one side of the beam, one side of the butterfly-shaped adjustment head is fixedly connected to a reverse threaded rod, the reverse threaded rod passes through the interior of the mounting groove and is rotatably connected to the beam, and the outer wall of the reverse threaded rod is symmetrically and movably connected to a movable block located inside the mounting groove.

[0028] By adopting the above technical solution, rotating the butterfly-shaped adjustment head can drive the reverse threaded rod to rotate, and at the same time, under the limit of the installation groove, the symmetrically arranged moving blocks can be adjusted to move towards or away from each other, and the position of the fixed plate can be adjusted by moving the moving blocks.

[0029] In summary, the present invention includes the following beneficial technical effects:

[0030] 1. The integrated construction method of prefabrication and lifting of the large-diameter ventilation duct in the aviation hangar grid is designed and segmented accurately through BIM technology, so that the large-diameter air duct is highly consistent with the grid structure during prefabrication and installation to avoid collision. The large-diameter air duct is prefabricated in advance and the process of assembling multiple sections of air supply duct is reasonably arranged, which can reduce the difficulty of construction and improve the construction efficiency. The safety and stability of the construction can be ensured by carrying out graded loading and overall lifting under the guidance of computer simulation. The large-diameter air duct is prefabricated and installed on the ground in advance, and the construction is synchronized with the grid and the integrated overall lifting is carried out, which can make the construction between the grid and the large-diameter air duct more convenient, and can also greatly improve the efficiency of the integrated construction of prefabrication and lifting of the large-diameter ventilation duct in the grid of the aviation hangar.

[0031] 2. The aviation hangar's ultra-large diameter ventilation duct grid prefabrication and lifting integrated construction method can be used to hoist the air supply duct through three different air supply duct hoisting components. The chord ball can connect and fix the chord rod, and at the same time, multiple chord rods and web rods can be fixed at this connection point to ensure the reasonable angle and tight connection between each rod. The pipe body is responsible for conveying air, and the insulation layer can prevent the pipe body from ensuring the temperature of the conveyed air is stable. The insulation shell can provide additional protection for the insulation layer to prevent the insulation layer from being damaged by the outside.

[0032] 3. The integrated construction method for prefabricated lifting in the grid of the super-large diameter ventilation duct in the aviation hangar can hang the beam on the hanger through the cooperation of the V-shaped hangers arranged at both ends of the beam and the lifting ears installed on the V-shaped hangers, so that the air duct valve can be hoisted and supported. The rotation of the butterfly-shaped adjustment head can drive the reverse threaded rod to rotate, and at the same time, the symmetrically arranged moving blocks can be adjusted to move toward or away from each other under the limit of the installation groove. The movement of the moving block can adjust the movement of the fixed plate to clamp the air duct valve, which can limit the position of the air duct valve on the beam. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] Figure 1 is a schematic diagram of the overall structure of an embodiment of the present invention;

[0034] Figure 2 Embodiment of the present invention Figure 1 Schematic diagram of the cross-sectional structure at AA in FIG.

[0035] Figure 3 It is a schematic diagram of the installation position structure of the hanger and the string ball in an embodiment of the present invention;

[0036] Figure 4 It is a structural schematic diagram of a first air supply pipe hanging assembly in an embodiment of the present invention;

[0037] Figure 5 is a structural schematic diagram of a second air supply pipe hanging assembly in an embodiment of the present invention;

[0038] Figure 6 1 is a schematic structural diagram of a third air supply pipe hanging assembly in an embodiment of the present invention;

[0039] Figure 7 Embodiment of the present invention Figure 1 Schematic diagram of the cross-sectional structure at BB in FIG.

[0040] Figure 8 is a schematic diagram of the cross-sectional structure of the air supply pipe in an embodiment of the present invention;

[0041] Fig. 9 Schematic diagram of the structure of the air duct valve hoisting assembly in an embodiment of the present invention;

[0042] Fig.10 It is a schematic diagram of the structure of the adjustment component in an embodiment of the present invention.

[0043] Explanation of the reference numerals: 1. grid; 101. upper chord; 1011. chord ball; 1012. chord rod; 102. lower chord; 103. web rod; 2. large diameter air duct; 201. air supply duct; 2011. pipe body; 2012. insulation layer; 2013. insulation shell; 202. air duct valve; 3. hanger; 4. air supply duct lifting assembly; 5. air duct valve lifting assembly; 501. cross beam; 502. V-shaped hanger rod; 503. lifting ear; 6. lifting ring; 7. U-shaped buckle; 8. lifting rope; 9. round pipe clamp; 10. hanger rod; 11. steel beam; 12. connecting steel bar; 13. pad block; 14. U-shaped pipe clamp; 15. mounting groove; 16. adjustment assembly; 1601. butterfly adjustment head; 1602. reverse threaded rod; 1603. moving block; 17. fixing plate. DETAILED DESCRIPTION

[0044] The following is combined with Figure 1-10 The present invention is described in further detail.

[0045] Example 1

[0046] The embodiment of the present invention discloses a prefabricated lifting integrated construction method for a large diameter ventilation duct in an aviation hangar. Figure 1 , Figure 2 and Figure 3 The prefabrication and lifting integrated construction method of the aviation hangar super-large diameter ventilation duct grid is aimed at the problem that the high-altitude grid 1 causes great difficulties in the installation of the super-large diameter air duct 2 during the construction of the aviation hangar, and the corresponding treatment measures are formulated:

[0047] Step 1: Establish the BIM model of the high-altitude grid 1 and the overall large-diameter air duct 2. The BIM model can provide a detailed and visual digital representation to facilitate the planning and coordination of various construction links. According to the upper chord 101 and the lower chord 102 in the grid 1 and the vein direction of multiple webs 103, the large-diameter air duct 2 is highly matched with the upper chord 101 and the lower chord 102 of the grid 1 to ensure the perfect spatial match between the large-diameter air duct 2 and the grid 1, and avoid the collision of the super-large diameter air duct 2 and the grid 1. The drawings are issued through the BIM model. The drawings are installation details and large-scale drawings, and the elevation and position of professional pipelines are marked in detail to provide accurate guidance for subsequent construction;

[0048] Step 2: According to the BIM drawings, the entire grid 1 and the large-diameter air duct 2 are split and numbered to form a disassembly drawing number, which can split the complex system into multiple parts that are easy to manage and install. According to the installation and construction sequence of the steel structure, the production sequence of the multiple air supply pipes 201 segments split from the large-diameter air duct 2 is determined to ensure smooth production and installation, avoid delays or errors caused by confusion in sequence, and at the same time, determine the selection of the hanger 3 to ensure that the hanger 3 can bear the weight of the large-diameter air duct 2 and match the grid 1 structure;

[0049] Step 3, set up the grid 1 according to the drawing to ensure that the basic structure is stable, weld and fix multiple hangers 3 to the bottom of the upper chord 101, and ensure that multiple hangers 3 are on the same horizontal plane, so as to ensure that the large-diameter air duct 2 remains horizontal during the installation process, transfer multiple air supply pipe 201 sections to the bottom of the two hangers 3 in the grid 1, use a hand winch to pull multiple air supply pipe 201 sections to the required height and position for installation, connect the air supply pipe 201 sections to ensure the continuity and air tightness of the air duct, and after the connection is completed, fix the air supply pipe 201 and the hanger 3 through the air supply pipe hanging assembly 4, finally, install the air duct valve 202 between the adjacent air supply pipe 201 sections as required, and fix it on the hanger 3 through the air duct valve hanging assembly 5 to ensure the overall integrity and functionality of the large-diameter air duct 2;

[0050] Step 4. Based on the reaction force value of each lifting point calculated by computer simulation, the reaction force value that each lifting point needs to bear can be accurately predicted through computer simulation to ensure the safety and stability during the lifting process, and implement graded loading of the lifting unit. During loading, the hydraulic lifting system at each lifting point is subjected to graded pressure loading, and the extension cylinder pressure is increased to 20%, 40%, 60%, 70% and 80% in sequence. The pressure is gradually increased to detect the response of the system under different loads to ensure that there are no abnormalities in the lifting process. When all steps are completed normally and everything is normal, the grid 1 and the large-diameter air duct 2 can be lifted and installed as a whole.

[0051] In this embodiment, the BIM technology is used for in-depth design so that the installation length of the large-diameter and high-weight air duct is not affected by the space in the cells of the grid 1. The large-diameter air duct 2 in the grid 1 is divided and segmented, split and numbered, and the air duct is processed and manufactured in batches off-site in advance. This is not only safe and convenient, but also significantly saves construction time. Based on the segmented design, during the installation of the large-diameter air duct 2, the air duct can be prevented from colliding with the upper chord 101 and the lower chord 102 of the grid 1. The reasonable arrangement of the assembly process of multiple sections of the air supply duct 201 can also reduce a large amount of mechanical costs caused by lifting. In addition, the large-diameter air duct 2 is prefabricated and installed on the ground in advance, and the construction is synchronized with the grid 1 and the integrated overall lifting method can also greatly improve the efficiency of the prefabrication and lifting integrated construction of the ultra-large diameter ventilation duct grid of the aviation hangar, save construction time, reduce the overall labor cost, and ensure the safety of construction.

[0052] In a further preferred embodiment of the present invention, Figure 2 and Figure 4 As shown, the air supply pipe hanging assembly 4 includes a lifting ring 6 sleeved on the outer wall of the air supply pipe 201, and U-shaped buckles 7 are arranged on both sides of the outer wall of the lifting ring 6. A lifting rope 8 is movably connected to the U-shaped buckle 7. The lifting ring 6 can be hung on the bottom end of the lifting rope 8 through the U-shaped buckles 7 on both sides of the lifting ring 6. The top of the lifting rope 8 is movably connected to the hanger 3, so that the air supply pipe 201 inserted in the lifting ring 6 can be hung and fixed. The set lifting rope 8 consists of a first hook, a first basket bolt, a wire rope, a second basket bolt and a second hook. The first hook is hoisted and connected with the U-shaped buckle 7. The first lifting The top of the hook is threadedly connected to the first turnbuckle bolt, the bottom of the first turnbuckle bolt is threadedly connected to the bottom end of the wire rope, the top of the wire rope is threadedly connected to the bottom end of the second turnbuckle bolt, the top of the second turnbuckle bolt is threadedly connected to the bottom of the second hook, and the second hook can be directly hung on the hanger 3, and the connection parts between the first turnbuckle bolt, the wire rope and the second turnbuckle bolt can be adjusted as needed, so that the hoisting height of the air supply pipe 201 can be adjusted to prevent the air supply pipe 201 from colliding with the grid 1;

[0053] It should be further explained that the first air supply pipe hanging assembly 4 is composed of the hanging ring 6, the U-shaped buckle 7 and the hanging rope 8.

[0054] In a further preferred embodiment of the present invention, Figure 2 and Figure 5As shown, the air supply pipe hanging assembly 4 includes a circular pipe clamp 9 clamped on the outer wall of the air supply pipe 201, and the air supply pipe 201 can be installed by the circular pipe clamp 9. Both sides of the outer wall of the circular pipe clamp 9 are fixedly connected with a hanging rod 10, and the top of the hanging rod 10 is fixedly connected to the hanger 3, so that the air supply pipe 201 can be hung and fixed, and the fixed connection between the circular pipe clamp 9 and the hanging rod 10 can be connected by bolts or by welding. The bolt connection method can facilitate personnel to replace when the air supply pipe 201 or the circular pipe clamp 9 is damaged;

[0055] It should be further explained that the second air supply pipe hanging assembly 4 is composed of the circular pipe clamp 9 and the hanging rod 10.

[0056] In a further preferred embodiment of the present invention, Figure 2 and Figure 6 As shown, the air supply pipe hanging assembly 4 includes a steel beam 11 located below the air supply pipe 201, and both ends of the upper surface of the steel beam 11 are fixedly connected with connecting steel bars 12. The steel beam 11 and the connecting steel bars 12 are both C-shaped channel steels. By fixing the two connecting steel bars 12 at the two ends of the steel beam 11, a U-shaped bracket can be formed. The air supply pipe 201 to be installed can be supported by the U-shaped bracket. The top of the connecting steel bar 12 is fixedly connected to the hanger 3, and a pad 13 is fixedly connected to the upper surface of the steel beam 11. The pad 13 can be a hard insulation pad, the air supply pipe 201 is located on the pad 13, the pad 13 can be placed between the air supply pipe 201 and the steel beam 11, and the upper surface of the pad 13 is an arc that fits the outer wall of the air supply pipe 201, so as to enhance the support effect of the air supply pipe 201, and the steel beam 11 is fixedly connected with a U-shaped pipe clamp 14, the air supply pipe 201 is located inside the U-shaped pipe clamp 14, and the installation position of the air supply pipe 201 can be fixed by the U-shaped pipe clamp 14, so as to improve the stability of the installation of the air supply pipe 201;

[0057] It should be further explained that the third type of air supply pipe hanging assembly 4 is composed of a steel beam 11 , a connecting steel bar 12 , a cushion block 13 and a U-shaped pipe clamp 14 .

[0058] In a further preferred embodiment of the present invention, Figure 2 , Figure 3 and Figure 7As shown, the upper chord 101 and the lower chord 102 have the same structure, and a plurality of web members 103 are arranged obliquely, and the two ends are respectively welded between the upper chord 101 and the lower chord 102. By obliquely welding the plurality of web members 103 between the upper chord 101 and the lower chord 102, a triangular support structure can be formed, so that the grid 1 can better disperse and bear loads in all directions, and can improve the bending and compression resistance of the grid 1, and prevent the grid 1 from deformation and instability. The upper chord 101 includes a plurality of chord balls 1011 and a plurality of chord rods 1012 on the same horizontal plane, and the ends of the chord rods 1012 are connected to the chord balls 101. 1 is fixedly connected to the outer wall of the chord rod 1012, the chord ball 1011 can play the role of connecting and fixing the chord rod 1012, the end of the web rod 103 away from the lower chord 102 is fixedly connected to the outer wall of the chord ball 1011, the chord ball 1011 is designed to be spherical or similar in shape, so that multiple chord rods 1012 and web rods 103 can be fixed at this connection point, ensuring a reasonable angle and tight connection between each rod, and the use of the chord ball 1011 can also improve the strength of the connection point, reduce local stress concentration, and enhance the stability of the entire structure of the grid 1, and one side of the hanger 3 is fixedly connected to the outer wall of the chord ball 1011;

[0059] It should be further explained that the several hangers 3 used for hanging are installed on the string ball 1011 by welding, and the connection positions between the several hangers 3 and the string ball 1011 are different according to the needs. The hanger 3 can be welded at a forty-five degree angle below the string ball 1011, or the hanger 3 can be welded at a horizontal position directly below the string ball 1011, or the hanger 3 can be welded at a longitudinal position directly below the string ball 1011.

[0060] In a further preferred embodiment of the present invention, Figure 2 and Figure 8 As shown, the air supply pipe 201 includes a pipe body 2011, which is the main part of the air supply pipe 201 and is responsible for conveying air. The outer wall of the pipe body 2011 is fixedly connected with an insulation layer 2012, and the insulation layer 2012 can adopt non-combustible centrifugal glass wool. The insulation layer 2012 can prevent the air in the pipe body 2011 from changing in temperature due to the influence of the external ambient temperature, so as to ensure the temperature stability of the conveyed air. The outer wall of the insulation layer 2012 is fixedly connected with an insulation shell 2013, and the insulation shell 2013 is made of aluminum, which can provide additional protection to prevent the insulation layer 2012 from being damaged by the outside.

[0061] In a further preferred embodiment of the present invention, Figure 2 and Fig. 9As shown, the air duct valve hanging assembly 5 includes a crossbeam 501 located below the air duct valve 202, and the air duct valve 202 is located on the upper surface of the crossbeam 501. Both ends of the upper surface of the crossbeam 501 are fixedly connected with V-shaped suspension rods 502, and the top of the V-shaped suspension rod 502 is fixedly connected with a lifting ear 503. The lifting ear 503 is movably connected to the hanger 3. Through the cooperation of the V-shaped suspension rods 502 at both ends of the crossbeam 501 and the lifting ears 503 installed on the V-shaped suspension rod 502, the crossbeam 501 can be hung on the hanger 3, so that the air duct valve 202 can be hoisted and supported.

[0062] Example 2

[0063] This embodiment is an improvement made on the basis of embodiment 1. Fig. 9 and Fig.10 As shown, a mounting groove 15 is provided on the upper surface of the crossbeam 501, and an adjusting component 16 is provided inside the mounting groove 15. The mounting groove 15 can limit the installation position of the adjusting component 16. The upper surface of the adjusting component 16 is symmetrically fixedly connected with a fixing plate 17. The air duct valve 202 is located between the symmetrically arranged fixing plates 17. The construction personnel can adjust the symmetrically arranged fixing plates 17 to move toward or away from each other by rotating the adjusting component 16. The air duct valve 202 can be clamped by moving the symmetrically arranged fixing plates 17. After the air duct valve 202 is clamped by the fixing plates 17, the fixing plates 17 and the side walls of the air duct valve 202 can be fixed by bolts, so that the position of the air duct valve 202 on the crossbeam 501 can be limited, and the stability of the installation of the crossbeam 501 can be enhanced.

[0064] The adjustment component 16 includes a butterfly-shaped adjustment head 1601 located on one side of the crossbeam 501, and a reverse threaded rod 1602 is fixedly connected to one side of the butterfly-shaped adjustment head 1601. The construction personnel can drive the reverse threaded rod 1602 to rotate by rotating the butterfly-shaped adjustment head 1601. The reverse threaded rod 1602 passes through the interior of the mounting groove 15 and is rotatably connected to the crossbeam 501. The external protruding teeth at both ends of the outer wall of the reverse threaded rod 1602 are set in opposite directions. The outer wall of the reverse threaded rod 1602 is symmetrically and movably connected with a moving block 1603 located inside the mounting groove 15. When the reverse threaded rod 1602 rotates, the symmetrically arranged moving blocks 1603 can be adjusted to move toward or away from each other under the limit of the mounting groove 15. The upper surfaces of the symmetrically arranged moving blocks 1603 are respectively fixedly connected to the lower surfaces of the symmetrically arranged fixed plates 17, so that the position of the fixed plates 17 can be adjusted by moving the moving blocks 1603.

[0065] The implementation principle of the integrated construction method for prefabricating and lifting the super-large diameter ventilation duct in the grid frame of the aviation hangar according to the embodiment of the present invention is as follows:

[0066] During construction, BIM technology is used to carry out in-depth design and precise segmentation, so that the large-diameter air duct 2 is highly consistent with the grid 1 structure during prefabrication and installation to avoid collision. The large-diameter air duct 2 is prefabricated in advance and the process of assembling multiple sections of air supply duct 201 is reasonably arranged, which can reduce the difficulty of construction, significantly improve construction efficiency, save construction time and cost, and then carry out graded loading and overall lifting under the guidance of computer simulation to ensure the safety and stability of construction. This comprehensive method realizes efficient, safe and economical prefabrication and lifting integrated construction of super-large diameter ventilation duct grid;

[0067] When hoisting the air supply pipe 201 and the grid 1 through the air supply pipe hoisting assembly 4, three methods can be used: the first method is to fix the air supply pipe 201 through the lifting ring 6, U-shaped buckle 7 and lifting rope 8, the second method is to fix it through the round pipe clamp 9 and the lifting rod 10, and the third method is to fix it through the steel beam 11, the connecting steel bar 12, the cushion block 13 and the U-shaped pipe clamp 14. When hoisting the air duct valve 202 and the grid 1 through the air duct valve hoisting assembly 5, the adjustment assembly 16 and the symmetrically arranged fixing plate 17 can be installed on the air duct valve hoisting assembly 5. The construction personnel can adjust the symmetrically arranged fixing plate 17 by rotating the adjustment assembly 16 to clamp the air duct valve 202, so as to enhance the stability of the installation of the crossbeam 501, thereby enhancing the installation effect of the present application.

[0068] The above are all preferred embodiments of the present invention, and are not intended to limit the protection scope of the present invention. Therefore, any equivalent changes made based on the structure, shape, and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A method for prefabricating and lifting integrated construction of super-large diameter ventilation ducts in an aviation hangar, characterized in that: During the construction of an aviation hangar, the prefabrication integrated construction method of the super-large diameter ventilation duct grid includes the following steps: Step 1: Establish a BIM model of the high-altitude grid (1) and the overall large-diameter air duct (2); according to the vein direction of the upper chord (101) and the lower chord (102) in the grid (1) and the plurality of web members (103), make the large-diameter air duct (2) highly fit with the upper chord (101) and the lower chord (102) of the grid (1), and issue a drawing; Step 2: According to the BIM drawings, the entire grid (1) and the overall large-diameter air duct (2) are split and numbered to form a pipe disassembly drawing number. According to the installation and construction sequence of the steel structure, the production sequence of the multiple air supply pipe (201) sections split from the large-diameter air duct (2) is determined, and the selection of the hanger (3) is determined; Step 3, erect the grid (1) according to the drawings, weld and fix a plurality of hangers (3) to the bottom of the upper chord (101), and ensure that the plurality of hangers (3) are on the same horizontal plane, transfer a plurality of air supply pipe (201) sections to the bottom of two hangers (3) in the grid (1), use a hand chain hoist to pull the plurality of air supply pipe (201) sections to the height and position required for installation, and connect the air supply pipe (201) sections. After the connection is completed, fix the air supply pipe (201) and the hanger (3) through the air supply pipe hanging assembly (4), install the air duct valve (202) between adjacent air supply pipe (201) sections as required, and fix it on the hanger (3) through the air duct valve hanging assembly (5); Step 4: Based on the reaction force values ​​of each lifting point calculated by computer simulation, the lifting unit is loaded in stages. Under normal circumstances, the grid (1) and the large-diameter air duct (2) are lifted and installed as a whole.

2. The method for prefabrication and lifting integration of super-large diameter ventilation ducts in a hangar according to claim 1, characterized in that: The air supply pipe hanging assembly (4) comprises a hanging ring (6) sleeved on the outer wall of the air supply pipe (201), U-shaped buckles (7) are provided on both sides of the outer wall of the hanging ring (6), a hanging rope (8) is movably connected to the U-shaped buckle (7), and the top end of the hanging rope (8) is movably connected to the hanging bracket (3).

3. The method for prefabrication and lifting integration of super-large diameter ventilation ducts in a hangar according to claim 1 is characterized in that: The air supply pipe hanging assembly (4) comprises a circular pipe clamp (9) clamped on the outer wall of the air supply pipe (201), and both sides of the outer wall of the circular pipe clamp (9) are fixedly connected to hanging rods (10), and the top end of the hanging rod (10) is fixedly connected to the hanger (3).

4. The method for prefabrication and lifting integration of super-large diameter ventilation ducts in a hangar according to claim 1 is characterized in that: The air supply pipe hanging assembly (4) comprises a steel beam (11) located below the air supply pipe (201), both ends of the upper surface of the steel beam (11) are fixedly connected with connecting steel bars (12), the top end of the connecting steel bar (12) is fixedly connected to the hanger (3), the upper surface of the steel beam (11) is fixedly connected with a cushion block (13), the air supply pipe (201) is located on the cushion block (13), a U-shaped pipe clamp (14) is fixedly connected to the steel beam (11), and the air supply pipe (201) is located inside the U-shaped pipe clamp (14).

5. The method for prefabrication and lifting integration of super-large diameter ventilation ducts in a hangar according to claim 1 is characterized in that: The upper chord (101) and the lower chord (102) have the same structure. The plurality of webs (103) are arranged obliquely, and the two ends are respectively welded between the upper chord (101) and the lower chord (102). The upper chord (101) includes a plurality of chord balls (1011) and a plurality of chord rods (1012) on the same horizontal plane. The ends of the chord rods (1012) are fixedly connected to the outer wall of the chord ball (1011). One end of the webs (103) away from the lower chord (102) is fixedly connected to the outer wall of the chord ball (1011). One side of the hanger (3) is fixedly connected to the outer wall of the chord ball (1011).

6. The method for prefabrication and lifting integration of super-large diameter ventilation ducts in a hangar according to claim 1 is characterized in that: The air supply pipe (201) comprises a pipe body (2011), the outer wall of the pipe body (2011) is fixedly connected to a heat-insulating layer (2012), and the outer wall of the heat-insulating layer (2012) is fixedly connected to a heat-insulating shell (2013).

7. The method for prefabrication and lifting integration of super-large diameter ventilation ducts in a hangar according to claim 1 is characterized in that: The air duct valve hanging assembly (5) comprises a crossbeam (501) located below the air duct valve (202), both ends of the upper surface of the crossbeam (501) are fixedly connected to V-shaped hanging rods (502), the top end of the V-shaped hanging rod (502) is fixedly connected to a lifting ear (503), and the lifting ear (503) is movably connected to the hanger (3).

8. The method for prefabrication and lifting integration of super-large diameter ventilation ducts in a hangar according to claim 7 is characterized in that: The upper surface of the crossbeam (501) is provided with a mounting groove (15), an adjusting assembly (16) is arranged inside the mounting groove (15), a fixing plate (17) is symmetrically fixedly connected to the upper surface of the adjusting assembly (16), and the air duct valve (202) is located between the symmetrically arranged fixing plates (17).

9. The method for prefabrication and lifting integration of super-large diameter ventilation ducts in a hangar according to claim 8, characterized in that: The adjustment assembly (16) comprises a butterfly-shaped adjustment head (1601) located on one side of the crossbeam (501); a reverse threaded rod (1602) is fixedly connected to one side of the butterfly-shaped adjustment head (1601); the reverse threaded rod (1602) passes through the interior of the mounting groove (15) and is rotationally connected to the crossbeam (501); and the outer wall of the reverse threaded rod (1602) is symmetrically and movably connected to a moving block (1603) located inside the mounting groove (15).

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