Positioning net assembly and tubular beam structure

Abstract

The utility model provides a positioning net assembly and a tubular beam structure. The positioning net assembly comprises a bottom support and two side wall supports. The bottom support comprises a horizontal steel bar set and a plurality of vertical steel bar sets. The horizontal steel bar set comprises a plurality of horizontal steel bars arranged at intervals in the extending direction of the pipeline. The vertical reinforcing steel bar group comprises a plurality of vertical reinforcing steel bars, the top of each vertical reinforcing steel bar is fixedly connected with a supporting frame, a supporting groove is formed in the top of each supporting frame, and the supporting grooves are fixed to the corresponding horizontal reinforcing steel bars in a lap joint mode; the two side wall supports are connected to the two sides of the horizontal steel bars respectively, second pipeline fixing positions are arranged on the side wall supports, and the horizontal steel bars and the vertical steel bars are bound and fixed. According to the positioning net assembly, the supporting grooves and the horizontal steel bars are in lap joint, an existing welding technology is replaced, and the number of closed structures is reduced, so that magnetic resistance is reduced, and the influence on a magnetic suspension traveling crane is reduced.

Description

Technical Field

[0001] The utility model belongs to the technical field of magnetic levitation high-speed flying car pipe beam construction, and specifically relates to a positioning net assembly and a pipe beam structure. Background Art

[0002] Ultra-high-speed low-vacuum pipeline maglev transportation is a mode of transportation that can achieve ultra-high-speed travel at 600km / h to 1000km / h. First, a pipeline isolated from the outside air is laid, and the pipeline is evacuated into a vacuum. Then the maglev train travels in the pipeline. Since the pipeline is sealed and the interior is in a vacuum state, the maglev train has no air resistance when traveling, which greatly increases the travel speed.

[0003] At present, in the construction process of vacuum pipelines, a positioning net is embedded in the pipeline to cooperate with the skeleton for structural support. The positioning net is made of overlapping steel bars, and the steel bars are connected by welding. Welding will cause the steel skeleton to produce a large number of closed structures. The closed structure is a closed metal ring. Eddy currents will appear in the magnetic field in the closed metal ring, generating magnetic resistance. The increase in magnetic resistance caused by a large number of closed structures affects the operation of the maglev train, causing the running speed of the maglev train to decrease. Utility Model Content

[0004] The embodiment of the utility model provides a positioning net assembly and a pipe beam structure, aiming to solve the technical problem in the prior art that the magnetic resistance in the skeleton steel bars of the magnetic levitation system is large, which affects the operation of the vehicle.

[0005] In order to achieve the above purpose, the technical solution adopted by the utility model is:

[0006] In a first aspect, a positioning network assembly is provided, comprising:

[0007] A bottom bracket, comprising a horizontal steel bar group and a plurality of vertical steel bar groups, wherein the horizontal steel bar group comprises a plurality of horizontal steel bars arranged at intervals along the extension direction of the pipeline; the vertical steel bar groups correspond to the horizontal steel bars one by one, each of the vertical steel bar groups comprises a plurality of vertical steel bar pairs arranged at intervals along the axial direction of the horizontal steel bars, the vertical steel bar pairs comprise two vertical steel bars distributed at intervals along the axial direction of the horizontal steel bars, the top of each of the vertical steel bars is fixedly connected to a support frame, a support groove is formed at the top of the support frame, the horizontal steel bars are overlapped and fixed in the corresponding support groove, and a first pipeline fixing position is formed between the two vertical steel bars in the same vertical steel bar pair; and

[0008] Two side wall brackets are respectively connected to the two ends of the horizontal steel bar. The side wall bracket is provided with a second pipe fixing position. The horizontal steel bar is tied and fixed to the vertical steel bar.

[0009] In combination with the first aspect, in a possible implementation method, two horizontal rods are further connected between the two vertical steel bars in the same pair of vertical steel bars, the two horizontal rods are arranged in the up and down directions, the axes of the horizontal rods are parallel to the axes of the horizontal steel bars, and the two vertical steel bars and the two horizontal rods enclose to form the first pipe fixing position.

[0010] In combination with the first aspect, in a possible implementation, the side wall support includes a plurality of supports, and the plurality of supports are spaced apart along an extension direction of the pipe, and each of the supports includes a first support rod and a second support rod arranged in parallel, and a plurality of reinforcing structures connecting the first support rod and the second support rod, the first support rod and the second support rod are both parallel to a vertical direction, and the first support rod and the second support rod are distributed axially along the horizontal steel bar, and the plurality of reinforcing structures are spaced apart along the axial direction of the first support rod.

[0011] In combination with the first aspect, in a possible implementation, the reinforcement structure includes a plurality of reinforcement rod groups arranged at intervals along the up and down directions, the reinforcement rod groups include a first reinforcement rod and a second reinforcement rod arranged in parallel, the first reinforcement rod and the first support rod are perpendicular to each other, one end of the first reinforcement rod is tied and fixed to the first support rod, and the other end of the first reinforcement rod is welded to the second support rod; one end of the second reinforcement rod is welded to the first support rod, and the other end of the second reinforcement rod is tied and fixed to the second support rod, and the first support rod, the second support rod, the first reinforcement rod and the second reinforcement rod enclose a second pipe fixing position.

[0012] In combination with the first aspect, in a possible implementation, a plurality of reinforcing steel bars are connected between the second support rods in two adjacent reinforcing structures, and the plurality of reinforcing steel bars are arranged at intervals along the axial direction of the second support rod, and the axis of the reinforcing steel bars is perpendicular to the axis of the second support rod.

[0013] In combination with the first aspect, in a possible implementation, the horizontal steel bar is tied and fixed to the support frame, and an insulating member is sleeved on the outer periphery of the horizontal steel bar.

[0014] In combination with the first aspect, in a possible implementation, a first insulating tube is sleeved on one end of the first reinforcing rod and the first supporting rod, and a second insulating tube is sleeved on one end of the second reinforcing rod and the second supporting rod.

[0015] Compared with the prior art, the positioning net assembly provided by the utility model has a support frame arranged on the top of the vertical steel bars, and a support groove is opened on the support frame. The support groove and the horizontal steel bars are overlapped to replace the existing welding process, thereby reducing the number of closed structures, thereby reducing the magnetic resistance and reducing the influence on the magnetic levitation vehicle. The support groove limits the horizontal steel bars from both sides and the bottom of the horizontal steel bars, thereby improving the connection stability of the horizontal and vertical steel bars. The horizontal steel bars and the support frame are overlapped without welding, which is convenient for adjusting the position. The assembly efficiency of the horizontal and vertical steel bars is high, which speeds up the construction.

[0016] In a second aspect, a tubular beam structure is provided, comprising:

[0017] A U-shaped housing, comprising a U-shaped outer plate, a U-shaped inner plate and two top plates, wherein the outer plate is sleeved on the outer periphery of the inner plate, and the top end surface of the outer plate is flush with the top end surface of the inner plate, and the two ends of the top plate are respectively connected to the top end of the outer plate and the top end of the inner plate; the outer plate, the inner plate and the two top plates enclose a U-shaped channel; and

[0018] As for the positioning net assembly of any one of the possible implementations described above, the positioning net assembly is installed in the U-shaped channel, and the space between the inner wall of the U-shaped channel and the positioning net assembly is filled with concrete.

[0019] In combination with the second aspect, in a possible implementation, the outer plate includes a U-shaped outer mesh and a U-shaped outer steel plate, and the outer mesh is fixed at intervals on the inner side of the outer steel plate; a plurality of shear nails are provided on the inner side of the outer steel plate, and the plurality of shear nails respectively pass through the mesh holes of the outer mesh and are fixedly connected to the bottom end of the vertical steel bars or the side wall positioning mesh.

[0020] In combination with the second aspect, in a possible implementation manner, a plurality of spacers are provided between the outer mesh and the outer steel plate.

[0021] Compared with the prior art, the pipe-beam structure provided by the utility model has a support frame arranged on the top of the vertical steel bars, and a support groove is opened on the support frame. The support groove is overlapped with the horizontal steel bars to replace the existing welding process, thereby reducing the number of closed structures, thereby reducing the magnetic resistance and reducing the influence on the magnetic levitation vehicle. The support groove limits the horizontal steel bars from both sides and the bottom of the horizontal steel bars, thereby improving the connection stability of the horizontal and vertical steel bars. The first pipe installation position and the second pipe installation position are respectively installed with pipes. Since the number of closed structures is reduced, the magnetic resistance of the formed pipe-beam structure is low, thereby reducing the influence on the vehicle. The horizontal steel bars are overlapped with the support frame without welding, which is convenient for adjusting the position. The assembly efficiency of the horizontal and vertical steel bars is high, thereby accelerating the construction speed of the pipe-beam structure. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0023] Figure 1 A schematic diagram of the main structure of the tubular beam structure provided by an embodiment of the utility model;

[0024] Figure 2 This is a schematic diagram of the structure of the bottom bracket used in the embodiment of the utility model;

[0025] Figure 3 A top view of a bottom bracket used in an embodiment of the present utility model;

[0026] Figure 4 This is a schematic structural diagram of the side wall bracket used in the embodiment of the utility model.

[0027] Description of reference numerals:

[0028] 1. U-shaped shell; 11. outer side plate; 111. outer steel plate; 112. outer side net; 113. shear nails; 114. pads; 12. inner side plate; 13. top plate;

[0029] 2. Bottom bracket; 21. Horizontal steel bar; 22. Vertical steel bar pair; 221. Vertical steel bar; 23. Support frame; 24. Horizontal rod; 25. First pipe fixing position; 26. Insulation member;

[0030] 3. Side wall bracket; 31. First support rod; 32. Second support rod; 33. Reinforcement structure; 331. First reinforcement rod; 332. Second reinforcement rod; 333. First insulating tube; 334. Second insulating tube; 34. Second pipeline fixing position;

[0031] 4. Pipeline. DETAILED DESCRIPTION

[0032] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0033] It should be noted that the terms "length", "width", "height", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "head", "tail", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the 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, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the utility model.

[0034] It should also be noted that, unless otherwise clearly specified and limited, the terms such as "install", "connect", "connect", "fix", "set" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral one; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0035] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In addition, the meaning of "multiple" and "several" is two or more, unless otherwise clearly and specifically defined.

[0036] Please also read Figures 1 to 4 Now, the positioning net assembly provided by the utility model is described. The positioning net assembly includes a bottom bracket 2 and two side wall brackets 3. The bottom bracket 2 includes a group of horizontal steel bars 21 and a plurality of groups of vertical steel bars 221. The group of horizontal steel bars 21 includes a plurality of horizontal steel bars 21 arranged at intervals along the extension direction of the pipeline; the group of vertical steel bars 221 corresponds to the horizontal steel bars 21 one by one, and each group of vertical steel bars 221 includes a plurality of vertical steel bar pairs 22 arranged at intervals along the axial direction of the horizontal steel bars 21. The vertical steel bar pair 22 includes two vertical steel bars 221 distributed at intervals along the axial direction of the horizontal steel bars 21. The top of each vertical steel bar 221 is fixedly connected to a support frame 23, and a support groove is formed at the top of the support frame 23. The support groove is overlapped and fixed with the corresponding horizontal steel bar 21 in the corresponding support groove, and a first pipeline fixing position 25 is formed between the two vertical steel bars 221 in the same vertical steel bar pair 22; the two side wall brackets 3 are respectively connected to the two ends of the horizontal steel bar 21, and the side wall bracket 3 has a second pipeline fixing position 34, and the horizontal steel bar 21 is tied and fixed to the vertical steel bar 221.

[0037] It should be noted that the horizontal steel bars 21 and the vertical steel bars 221 are insulated and connected. After being tied and fixed, there is no electrical conduction between the horizontal steel bars 21 and the vertical steel bars 221.

[0038] As a fixing method between the horizontal steel bars 21 and the vertical steel bars 221, the horizontal steel bars 21 and the support frame 23 are fixed by binding with insulating wires. During the binding and fixing, insulating tape can be padded between the horizontal steel bars 21 and the vertical steel bars 221.

[0039] As another fixing method between the horizontal steel bar 21 and the vertical steel bar 221, the horizontal steel bar 21 and the support frame 23 are fixed by insulating clips. The insulating clips are two insulating binding belts connected together. The insulating binding belts can form an annular binding ring. The axial directions of the two binding rings are opposite. The two binding rings are respectively mounted on the horizontal steel bar 21 and the support frame 23.

[0040] During specific implementation, the support frame 23 and the vertical steel bars 22 are integrally formed, and the support frame 23 and the vertical steel bars 22 are arranged in a Y shape.

[0041] In a specific implementation, the included angle of the support groove is between 60° and 120°.

[0042] Compared with the prior art, the positioning net assembly provided in the present embodiment has a support frame 23 disposed on the top of the vertical steel bar 221, and a support groove is opened on the support frame 23. The support groove and the horizontal steel bar 21 are overlapped to replace the existing welding process, thereby reducing the number of closed structures, thereby reducing the magnetic resistance and reducing the impact on the magnetic levitation vehicle. The support groove limits the horizontal steel bar 21 from both sides and the bottom of the horizontal steel bar 21, thereby improving the connection stability between the horizontal steel bar 21 and the vertical steel bar 221; the horizontal steel bar 21 and the support frame 23 are overlapped, and no welding is required, which is convenient for adjusting the position. The assembly efficiency of the horizontal steel bar 21 and the vertical steel bar 221 is high, which speeds up the construction speed.

[0043] In some embodiments, see Figure 1 Two horizontal bars 24 are connected between two vertical steel bars 221 in the same vertical steel bar pair 22. The two horizontal bars 24 are arranged in the up-down direction. The axis of the horizontal bar 24 is parallel to the axis of the horizontal steel bar 21. The two vertical steel bars 221 and the two horizontal bars 24 enclose a first pipe fixing position 25. The first pipe fixing position 25 formed by connecting the two horizontal bars 24 and the two vertical steel bars 221 has a high structural strength and can ensure the stability of the pipe during use.

[0044] In some embodiments, see Figure 3The side wall bracket 3 includes a plurality of brackets, which are arranged at intervals along the extension direction of the pipeline, and each bracket includes a first support rod 31 and a second support rod 32 arranged in parallel, and a plurality of reinforcing structures 32 connecting the first support rod 31 and the second support rod 32, the first support rod 31 and the second support rod 32 are both parallel to the vertical direction, and the first support rod 31 and the second support rod 32 are distributed along the axial direction of the horizontal steel bar 21, and the plurality of reinforcing structures 32 are distributed at intervals along the axial direction of the first support rod 31. The plurality of side wall brackets extend along the through-going direction of the pipeline, which is convenient for the later forming of the pipeline, and the reinforcing structure 33 connects the first support rod 31 and the second support rod 32 together, thereby improving the structural strength of a single side wall bracket, and thus ensuring the supporting effect of the side wall bracket 3.

[0045] In some embodiments, see Figure 1 and Figure 4 The reinforcing structure 32 includes a plurality of reinforcing rod groups arranged at intervals in the vertical direction, and the reinforcing rod groups include a first reinforcing rod 331 and a second reinforcing rod 332 arranged in parallel. The first reinforcing rod 331 is perpendicular to the first support rod 31, one end of the first reinforcing rod 331 is tied and fixed to the first support rod 31, and the other end of the first reinforcing rod 331 is welded to the second support rod 32; one end of the second reinforcing rod 332 is welded to the first support rod 31, and the other end of the second reinforcing rod 332 is tied and fixed to the second support rod 32. The first support rod 31, the second support rod 32, the first reinforcing rod 331 and the second reinforcing rod 332 are surrounded to form a second pipe fixing position 34. The two ends of the first reinforcing rod 331 and the two ends of the second reinforcing rod 332 are connected in opposite directions, so that the welding points and the binding points on the first support rod 31 and the second support rod 32 appear alternately. The binding and fixing method reduces the number of closed structures and reduces the magnetic resistance. The existence of the welding points enables the first reinforcing rod 331 to be fixed on the second support rod 32, and the second reinforcing rod 332 to be fixed on the first support rod 31. The position stability of the first reinforcing rod 331 and the second reinforcing rod 332 is ensured, the connection effect is improved, and the stability of the second pipe fixing position 34 is improved. The position of the first reinforcing rod 331 and / or the second reinforcing rod 332 will not shift, so that the overall structural strength is guaranteed and the construction quality is guaranteed.

[0046] In some embodiments, see Figure 1 A plurality of reinforcing steel bars are connected between the second support rods 32 in two adjacent reinforcing structures 3, and the plurality of reinforcing steel bars are arranged at intervals along the axial direction of the second support rod 32, and the axis of the reinforcing steel bars is perpendicular to the axis of the second support rod 32. The reinforcing steel bars connect the two adjacent side wall brackets together, thereby improving the overall structural strength and structural stability of the side wall bracket 3, and the plurality of side wall brackets are connected together in the horizontal direction, thereby improving the structural strength.

[0047] In some embodiments, see Figure 1 and Figure 2 , the horizontal steel bar 21 is tied and fixed to the support frame 23, and an insulating member 26 is sleeved on the outer periphery of the horizontal steel bar 21. The insulating member 26 can cut off the current and prevent the current from being transferred from the horizontal steel bar 21 to the support frame 23, thereby improving the safety of the positioning net. The tying and fixing can improve the connection strength of the horizontal steel bar 21 and the vertical steel bar 22 to achieve the strength of the traditional welded structure, while reducing the number of closed structures to reduce the impact on driving.

[0048] In a specific implementation, the insulating member 26 is an insulating heat shrink tube. After being sleeved on the horizontal steel bar 21 , the insulating heat shrink tube is heated, and the heat shrink tube is deformed and shrinks, so that the insulating member 26 is firmly fixed on the horizontal steel bar 21 .

[0049] In some embodiments, see Figure 1 and Figure 4 The first reinforcing rod 331 is fixedly tied to the first support rod 31 at one end thereof, and the second reinforcing rod 332 is fixedly tied to the second support rod 32 at one end thereof, and the second insulating tube 334 is sleeved thereon. The first insulating tube 333 and the second insulating tube 334 are arranged so that the first support rod 31 and the second support rod 32 are not connected to each other, and the current does not flow between the first support rod 31 and the second support rod 32, thereby improving the insulation effect of the positioning net assembly and improving the safety.

[0050] In a specific implementation, the first insulating tube 333 and the second insulating tube 334 are both heat shrink tubes, which can fit tightly to the first support rod 31 or the second support rod 32 after being heated, thereby improving the connection effect.

[0051] Based on the same inventive concept, the present application also provides a tubular beam structure, including a U-shaped shell 1 and a positioning net assembly as in any of the above embodiments. The U-shaped shell 1 includes a U-shaped outer plate 11, a U-shaped inner plate 12 and two top plates 13, the outer plate 11 is sleeved on the outer periphery of the inner plate 12, and the top surface of the outer plate 11 is flush with the top surface of the inner plate 12, the two ends of the top plate 13 are respectively connected to the top of the outer plate 11 and the top of the inner plate 12, the outer plate 11, the inner plate 12 and the two top plates 13 enclose a U-shaped channel; the positioning net assembly is installed in the U-shaped channel, and the space between the inner wall of the U-shaped channel and the positioning net assembly is filled with concrete.

[0052] Compared with the prior art, the pipe-beam structure provided in the present embodiment has a support frame 23 disposed on the top of the vertical steel bar 221, and a support groove is opened on the support frame 23. The support groove and the horizontal steel bar 21 are overlapped to replace the existing welding process, thereby reducing the number of closed structures, thereby reducing the magnetic resistance and reducing the influence on the magnetic levitation vehicle. The support groove limits the horizontal steel bar 21 from both sides and the bottom of the horizontal steel bar 21, thereby improving the connection stability between the horizontal steel bar 21 and the vertical steel bar 221; the first pipe fixing position 25 and the second pipe fixing position 34 are respectively installed with pipes. Due to the reduction in the number of closed structures, the magnetic resistance of the formed pipe-beam structure is low, thereby reducing the influence on the vehicle; the horizontal steel bar 21 and the support frame 23 are overlapped, and no welding is required, which is convenient for adjusting the position. The assembly efficiency of the horizontal steel bar 21 and the vertical steel bar 221 is high, thereby accelerating the construction speed of the pipe-beam structure.

[0053] In some embodiments, see Figure 1 and Figure 2 The outer plate 11 includes a U-shaped outer net 112 and a U-shaped outer steel plate 111. The outer net 112 is fixed to the inner side of the outer steel plate 111 at intervals. A plurality of shear nails 113 are provided on the inner side of the outer steel plate 111. The plurality of shear nails 113 pass through the mesh of the outer net 112 respectively and are fixedly connected to the bottom end of the vertical steel bar 221 or the side wall bracket 3 in the positioning net assembly. The outer plate 111 can provide the shear nails 113 to facilitate the installation of the horizontal positioning net 2 and the side wall bracket 3. The setting of the outer net 112 can guide the pouring of concrete and facilitate the construction of the workers.

[0054] In specific implementation, the second support rod 32 is arranged close to the side wall, and the bottom end of the second support rod 32 is tied and fixed with the corresponding shear nail 113; the bottom end of the first support rod 31 is welded and fixed with the corresponding shear nail 113. This reduces the generation of closed structures. The first support rod 31 can orient and calibrate the position of the second support rod 32, and the position of the second support rod 32 is set with reference to the first support rod 31, which reduces the difficulty of installation.

[0055] In some embodiments, see Figure 1 A plurality of pads 114 are provided between the outer net 112 and the outer steel plate 111. The pads 114 support the bottom bracket 2 and the pipe 4, and can fix the outer net 112 to the inner wall of the outer steel plate 111, so as to prevent the outer net 112 from being attached to the inner wall of the outer steel plate 111 and affecting the pouring of concrete. The pads 114 allow a gap to exist between the outer net 112 and the inner wall of the outer steel plate 111.

[0056] Optionally, the pad 114 is a concrete pad. Concrete material is widely available, low in cost, easy to process, and manufacturing will not affect construction efficiency.

[0057] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A positioning net assembly, characterized in that: include: A bottom bracket, comprising a horizontal steel bar group and a plurality of vertical steel bar groups, wherein the horizontal steel bar group comprises a plurality of horizontal steel bars arranged at intervals along the extension direction of the pipeline; the vertical steel bar groups correspond to the horizontal steel bars one by one, each of the vertical steel bar groups comprises a plurality of vertical steel bar pairs arranged at intervals along the axial direction of the horizontal steel bars, the vertical steel bar pairs comprise two vertical steel bars distributed at intervals along the axial direction of the horizontal steel bars, the top of each of the vertical steel bars is fixedly connected to a support frame, a support groove is formed at the top of the support frame, the horizontal steel bars are overlapped and fixed in the corresponding support groove, and a first pipeline fixing position is formed between the two vertical steel bars in the same vertical steel bar pair; and Two side wall brackets are respectively connected to the two ends of the horizontal steel bar. The side wall bracket is provided with a second pipe fixing position. The horizontal steel bar is tied and fixed to the vertical steel bar.

2. The positioning net assembly according to claim 1, characterized in that: Two horizontal rods are also connected between the two vertical steel bars in the same vertical steel bar pair. The two horizontal rods are arranged in the up and down directions. The axes of the horizontal rods are parallel to the axes of the horizontal steel bars. The two vertical steel bars and the two horizontal rods enclose the first pipe fixing position.

3. The positioning net assembly according to claim 1, characterized in that: The side wall support includes a plurality of supports, and the plurality of supports are spaced apart along the extension direction of the pipeline, and each of the supports includes a first support rod and a second support rod arranged in parallel, and a plurality of reinforcing structures connecting the first support rod and the second support rod, the first support rod and the second support rod are both parallel to the vertical direction, and the first support rod and the second support rod are distributed along the axial direction of the horizontal steel bar, and the plurality of reinforcing structures are spaced apart along the axial direction of the first support rod.

4. The positioning net assembly according to claim 3, characterized in that: The reinforcement structure includes a plurality of reinforcement rod groups arranged at intervals along the up and down directions, the reinforcement rod groups include a first reinforcement rod and a second reinforcement rod arranged in parallel, the first reinforcement rod and the first support rod are perpendicular to each other, one end of the first reinforcement rod is tied and fixed to the first support rod, and the other end of the first reinforcement rod is welded to the second support rod; one end of the second reinforcement rod is welded to the first support rod, and the other end of the second reinforcement rod is tied and fixed to the second support rod, and the first support rod, the second support rod, the first reinforcement rod and the second reinforcement rod enclose a second pipe fixing position.

5. The positioning net assembly according to claim 3, characterized in that: A plurality of reinforcing steel bars are connected between the second support rods in two adjacent reinforcing structures. The plurality of reinforcing steel bars are arranged at intervals along the axial direction of the second support rod, and the axes of the reinforcing steel bars are perpendicular to the axis of the second support rod.

6. The positioning net assembly according to claim 1, characterized in that: The horizontal steel bars are tied and fixed to the support frame, and an insulating member is sleeved on the outer periphery of the horizontal steel bars.

7. The positioning net assembly according to claim 4, characterized in that: One end of the first reinforcing rod that is bound and fixed to the first supporting rod is sleeved with a first insulating tube; one end of the second reinforcing rod that is bound and fixed to the second supporting rod is sleeved with a second insulating tube.

8. A tubular beam structure, characterized in that: include: The U-shaped shell comprises a U-shaped outer plate, a U-shaped inner plate and two top plates, wherein the outer plate is sleeved on the outer periphery of the inner plate, and the top end surface of the outer plate is flush with the top end surface of the inner plate, and the two ends of the top plate are respectively connected to the top end of the outer plate and the top end of the inner plate; the outer plate, the inner plate and the two top plates enclose to form a U-shaped channel; as well as The positioning net assembly according to any one of claims 1 to 7, wherein the positioning net assembly is installed in the U-shaped channel, and the space between the inner wall of the U-shaped channel and the positioning net assembly is filled with concrete.

9. The tubular beam structure according to claim 8, characterized in that: The outer plate includes a U-shaped outer net and a U-shaped outer steel plate, and the outer net is fixed at intervals on the inner side of the outer steel plate; a plurality of shear nails are provided on the inner side of the outer steel plate, and the plurality of shear nails respectively pass through the mesh holes of the outer net and are fixedly connected to the bottom end of the vertical steel bar or the side wall bracket in the positioning net assembly.

10. The tubular beam structure according to claim 9, characterized in that: A plurality of cushion blocks are arranged between the outer net and the outer steel plate.

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