Detachable fusiform component composed of planar module units and design method thereof

Abstract

The invention relates to a detachable fusiform component composed of planar module units and a design method thereof. The detachable fusiform component comprises an upper structure and a lower structure which are the same in structure. The upper structure comprises a module unit A, a module unit B and a slotted end plate; each module unit A comprises two first vertical rods, a middle slotted connecting plate and a bottom slotted connecting plate; each module unit B comprises two second vertical rods, a middle plate and a bottom plate, a protrusion is arranged in the middle of one face of each slotted end plate, and a notch is formed in the middle of each protrusion; and the middle slotted connecting plates of the upper structure and the lower structure are vertically arranged. The detachable fusiform member provided by the invention can be used as various supports in a permanent structure and a temporary axial supporting member in large-scale engineering construction, realizes quick assembly and convenient disassembly of the structure, and solves the problems that an existing temporary structural rod piece is weak in bearing capacity and low in flexibility, and the permanent structure is difficult to reuse after being disassembled.

Description

Technical Field

[0001] The invention relates to a detachable shuttle-shaped component composed of plane module units and a design method thereof. Background Art

[0002] Axial load-bearing components are widely used in structural engineering, such as diagonal braces in frame structures and portal frame structures, temporary supports during construction, and three-dimensional trusses in temporary structures such as temporary stages. The diagonal braces in frame structures and portal frame structures are mostly single steel components. Due to the limitations of size and node connection, it is difficult to reuse them after disassembly, resulting in a waste of resources and failing to reflect the green and low-carbon attributes of the structure. The supports for temporary structures during construction are mostly scaffolding systems made of steel pipes with a diameter of about 50 mm. The spacing between the rods is small, making it difficult to meet the requirements of larger spans and heights (during the current construction of prefabricated structures, it is often necessary to temporarily fix large prefabricated components, and the original temporary structures are difficult to meet the requirements). The node connections are weak and the performance is unstable. In existing three-dimensional truss structures, the module connection nodes are weak and prone to brittle failure.

[0003] As a commonly used axial load-bearing member, the lattice shuttle column is widely used in buildings such as airports and stations due to its good stability. However, this type of member is welded from multiple pipes. On the one hand, the single member is large in size and difficult to construct. On the other hand, due to its fixed size, it is difficult to disassemble and use it in other projects.

[0004] In order to better realize the concept of green buildings and promote the recycling of resources, we need an axial load-bearing component that can be reused after disassembly, has strong versatility, and has excellent mechanical properties. On the one hand, it can improve the assembly properties and resource recycling rate of permanent structures, and on the other hand, it can meet the needs of large-scale prefabricated structural engineering construction for temporary support of larger height and bearing capacity. Summary of the invention

[0005] In order to overcome the problems existing in the above-mentioned prior art, the present invention proposes a detachable shuttle-shaped component composed of planar module units. The component adopts a planar lightweight module, which can be easily disassembled and transported. At the same time, the characteristics of multi-module assembly make the component size flexible and changeable, and it has strong adaptability to different structures. It can solve the problems of weak connection performance of existing detachable structures, low bearing capacity of single components, poor flexibility, single node form, and low assembly and disassembly efficiency.

[0006] The technical solution of the present invention to solve the above problem is: a detachable shuttle-shaped component composed of planar module units, which is special in that:

[0007] It includes an upper structure and a lower structure of the same structure; the upper structure includes a module unit A, a module unit B and a slotted end plate;

[0008] The module unit A comprises two first vertical poles, a middle slotted connecting plate and a bottom slotted connecting plate; the middle slotted connecting plate and the bottom slotted connecting plate are arranged in parallel, and the ends of the two first vertical poles are respectively fixed to the middle slotted connecting plate and the bottom slotted connecting plate; the two first vertical poles are arranged obliquely to form a trapezoidal plane with the middle slotted connecting plate and the bottom slotted connecting plate.

[0009] The module unit B includes two second vertical poles, a middle plate and a bottom plate. The middle plate and the bottom plate are arranged in parallel, and the ends of the two second vertical poles are fixed to the middle plate and the bottom plate respectively; the two second vertical poles are arranged obliquely to form a trapezoidal plane with the middle plate and the bottom plate.

[0010] A protrusion is provided in the middle of one side of the slotted end plate, and a notch is provided in the middle of the protrusion.

[0011] The module unit A of the upper structure extends into the module unit B, and the middle of the middle slotted connecting plate and the middle plate are aligned; the middle of the bottom slotted connecting plate and the bottom plate are aligned, the raised surface of the slotted end plate contacts the bottom plate, the raised surface is embedded in the slot of the bottom slotted connecting plate through the slot, the bottom surface of the slot contacts the bottom surface of the slot, and the middle of the bottom slotted connecting plate, the bottom plate and the slotted end plate are connected by bolts; the middle slotted connecting plates of the upper structure and the lower structure are vertically arranged, the slots of the middle slotted connecting plates are embedded in each other and fixed by bolts, the surface of the middle slotted connecting plate of the upper structure contacts the surface of the middle plate of the lower structure and is fixed by bolts, and the middle plate of the upper structure contacts the surface of the middle slotted connecting plate of the lower structure and is fixed by bolts.

[0012] Furthermore, the above-mentioned detachable shuttle-shaped component also includes a stiffness enhancement module, including an internal enhancement frame and two external enhancement frames, the internal enhancement frame is formed by four connecting plates connected end to end, and an arc plate is arranged outside each connection; the external enhancement frame includes a fixing plate, and an arc plate is arranged at the end of the fixing plate. An internal enhancement frame is respectively arranged in the upper structure and the lower structure, and the four arc plates are respectively fitted with each vertical pole, and the external enhancement frames are symmetrically arranged on both sides of the internal enhancement frame, and the arc plates of the internal enhancement frames are fitted with the vertical poles, and the fixing plates are connected to the corresponding connecting plates by bolts.

[0013] Furthermore, bolt holes and weight-reducing holes are provided on the connecting plate and the fixing plate of the above-mentioned detachable shuttle-shaped component.

[0014] Furthermore, the corners of the slotted end plates are provided with bolt holes for connection with the foundation or other components, and the center of the slots on the protrusions is provided with bolt holes.

[0015] Furthermore, the two first uprights in the module unit A are respectively welded and fixed to the middle slotted connecting plate and the bottom slotted connecting plate; the two second uprights in the module unit B are respectively welded and fixed to the middle plate and the bottom plate.

[0016] Furthermore, the first vertical pole of the module unit A and the second vertical pole of the module unit B are round tubes or rectangular tubes.

[0017] Furthermore, the middle plate and the bottom plate of the module unit B may be flat plates or grooved plates.

[0018] Furthermore, the first vertical poles of the module unit A are respectively fixed to both sides of the middle slotted connecting plate and the bottom slotted connecting plate; the second vertical poles of the module unit B are respectively fixed to both sides of the middle plate and the bottom plate.

[0019] Furthermore, the middle slotted connecting plate and the bottom slotted connecting plate of the module unit A extend outward and are provided with bolt holes;

[0020] The middle plate and the bottom plate of the module unit B extend outward and are provided with bolt holes.

[0021] In addition, the present invention also proposes a design method for a detachable shuttle-shaped component composed of planar module units, which is characterized by comprising the following steps:

[0022] (1) Define the component aspect ratio λ a :

[0023] λ a =h / w,

[0024] Among them, h is the overall height of the component, and w is the width of the middle part of the component;

[0025] (2) Calculation of single-limb slenderness ratio λ b :

[0026] λ b =h b / i,

[0027] Among them, h b is the length of a single-leg pipe, i is the radius of gyration of the pipe section;

[0028] (3) Define the equivalent strength design value N of the component E :

[0029] N E =4f y A,

[0030] Among them, f y is the yield strength of the material, which can be obtained according to the "Steel Structure Design Standard" GB50017-2017, and A is the cross-sectional area of ​​a single-limb member;

[0031] (4) Definition of the influence coefficient of the stable bearing capacity of the detachable shuttle member

[0032]

[0033] (5) Calculate the stable bearing capacity of the detachable shuttle member N:

[0034]

[0035] Advantages of the present invention:

[0036] (1) Module unit A (10) and module unit B (11) only include two upright poles and two connecting plates, are light in weight and small in size, and can be installed and disassembled manually without the need for large machinery, thereby improving the convenience of installation and disassembly;

[0037] (2) The basic planar module units can be combined into shuttle column components of different sizes, greatly improving the flexibility of the components and the possibility of reuse after disassembly;

[0038] (3) The detachable shuttle-shaped component adopts a shuttle-shaped setting, which increases the size of the middle part, can improve the overall stability of the component and improve the material utilization efficiency;

[0039] (4) The detachable shuttle-shaped component further improves its flexibility through the setting of the stiffness adjustment module, which can enhance the structure's ability to cope with extreme conditions such as blizzards. BRIEF DESCRIPTION OF THE DRAWINGS

[0040] Figure 1 It is the structural diagram of module unit A;

[0041] Figure 2 It is the structural diagram of module unit B;

[0042] Figure 3 It is a structural diagram of the slotted end plate;

[0043] Figure 4 It is a schematic diagram of module assembly and a structural diagram of a shuttle-shaped component consisting of 4 modules;

[0044] Figure 5 It is a structural diagram of a shuttle-shaped component composed of 8 modules;

[0045] Figure 6 is a schematic diagram of the stiffness enhancement module and its assembly;

[0046] Figure 7 It is a structural diagram of a module unit of a detachable shuttle-shaped member with enhanced constraints;

[0047] Figure 8is the nonlinear buckling mode of the component.

[0048] Among them, 1. the first vertical pole; 2. the middle slotted connecting plate; 3. the bottom slotted connecting plate; 4. the bolt connection hole; 5. the second vertical pole; 6. the middle plate; 7. the bottom plate; 8. the bolt hole for connecting with the foundation or other components; 9. the bolt hole for connecting with the module; 10. the module unit A; 11. the module unit B; 12. the slotted end plate; 13. the connecting plate; 14. the arc plate; 15. the external module; 16. the bolt connection hole; 17. the weight reduction hole; 18. the internal module; 19. the constraint enhancement module unit A; 20. the constraint enhancement module unit B, 21. the fixing plate. DETAILED DESCRIPTION

[0049] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention. Therefore, the following detailed description of the embodiments of the present invention provided in the drawings is not intended to limit the scope of the invention claimed for protection, but merely represents selected embodiments of the present invention.

[0050] See also Figure 1-Figure 6 The present invention proposes a detachable shuttle-shaped component composed of planar module units, including an upper structure and a lower structure with the same structure; the upper structure includes a planar module unit and a slotted end plate 12, the planar module unit module unit A10, the module unit B11 and the slotted end plate 12.

[0051] Specifically, see Figure 1 , the module unit A comprises two first uprights 1, a middle slotted connecting plate 2 and a bottom slotted connecting plate 3; the middle slotted connecting plate 2 and the bottom slotted connecting plate 3 are arranged in parallel, and the ends of the two first uprights 1 are respectively fixed to the middle slotted connecting plate 2 and the bottom slotted connecting plate 3; the length of the middle slotted connecting plate 2 is greater than the bottom slotted connecting plate 3, and the two first uprights 1 are arranged obliquely to form a trapezoidal plane with the middle slotted connecting plate 2 and the bottom slotted connecting plate 3. The middle outer sides of the middle slotted connecting plate 2 and the bottom slotted connecting plate 3 are provided with shallow grooves, and both are provided with bolt holes 4 for connection with other modules. The first uprights 1 of the module unit A are respectively fixed to both sides of the middle slotted connecting plate 2 and the bottom slotted connecting plate 3.

[0052] Specifically, see Figure 2The module unit B includes two second vertical rods 5, a middle plate 6 and a bottom plate 7. The middle plate 6 and the bottom plate 7 are arranged in parallel. The ends of the two second vertical rods 5 are fixed to the middle plate 6 and the bottom plate 7 respectively. The length of the middle plate 6 is the same as the length of the middle slotted connecting plate 2, and the length of the bottom plate 7 is the same as the length of the bottom slotted connecting plate 3. The two second vertical rods 5 are arranged obliquely. The middle plate 6 and the bottom plate 7 are grooved plates. The second vertical rods 5 are fixed to the two sides of the inner web of the middle plate 6 and the bottom plate 7 respectively. The second vertical rods 5, the middle plate 6 and the bottom plate 7 form a trapezoidal plane. The angle between the two second vertical rods 5 is the same as the angle between the two first vertical rods 1. Three bolt holes are arranged in the middle of the middle plate 6 for connecting other modules.

[0053] Specifically, see Figure 3 A protrusion is provided in the middle of one side of the slotted end plate 12, a notch is provided in the middle of the protrusion, a bolt hole 8 is provided at the corner of the slotted end plate 12 for connecting with the foundation or other components, a bolt hole 9 is provided in the center of the notch on the protrusion, and 5 bolt holes are provided in the middle to connect with the plane module.

[0054] See also Figure 4 and Figure 5 The module unit A of the upper structure extends into the module unit B, wherein the middle slotted connecting plate 2 and the middle part of the middle plate 6 are aligned; the middle part of the bottom slotted connecting plate 3 and the bottom plate 7 are aligned, the raised surface of the slotted end plate 12 contacts the bottom plate 7, the raised surface is embedded in the slot of the bottom slotted connecting plate 3 through the slot, the bottom surface of the slot contacts the bottom surface of the slot, and the middle part of the bottom slotted connecting plate 3, the bottom plate 7 and the slotted end plate 12 are connected by bolts.

[0055] The middle slotted connecting plate 2 of the upper structure and the lower structure is vertically arranged, the slots of the middle slotted connecting plate 2 are embedded in each other and fixed by bolts, the surface of the middle slotted connecting plate 2 of the upper structure is in contact with the surface of the middle plate 6 of the lower structure and fixed by bolts, and the middle plate 6 of the upper structure is in contact with the surface of the middle slotted connecting plate 2 of the lower structure and fixed by bolts.

[0056] Specifically, the two first uprights 1 in the module unit A are respectively welded and fixed to the middle slotted connecting plate 2 and the bottom slotted connecting plate 3; the two second uprights 5 in the module unit B are respectively welded and fixed to the middle plate 6 and the bottom plate 7.

[0057] Furthermore, the first vertical pole 1 of the module unit A and the second vertical pole 5 of the module unit B are round tubes or rectangular tubes.

[0058] Furthermore, the middle plate 6 and the bottom plate 7 of the module unit B11 are grooved plates or flat plates.

[0059] See also Figure 4A basic shuttle-shaped member is composed of two module units A10, two module units B11, and two slotted end plates 12. The installation process is as follows:

[0060] First, the bottom slotted connecting plate 3 of the module unit A10 is embedded and connected with the slotted end plate 12, and the bolt holes on both sides are connected with bolts. Then, the module unit B11 is vertically inserted into the module unit A10, and the module unit B11 is fixed with the slotted end plate and the module unit A10 with bolts.

[0061] Next, place another module unit A10 vertically with the first module unit A10, and embed the middle slotted connecting plates of the two into each other. At this time, the top module unit A10 and the bottom module unit B11 are in the same plane, and the middle slotted connecting plate 2 of the top module unit A10 contacts the middle plate 6 of the bottom module B, and then connect the bolt holes on both sides with bolts.

[0062] Then, another module unit B11 is vertically inserted into the top module unit A10, and this top module unit B11 is bolted to the bottom module unit A10.

[0063] Finally, the top is fixed with another slotted end plate 12 to the top module unit A and module unit B11. Figure 5 By adopting this connection method, shuttle-shaped components can be assembled. Therefore, in theory, multiple small modules can be used to assemble components of any large size, realizing the miniaturization of modules of large components, which is convenient for installation, disassembly and reuse.

[0064] In addition, the present invention also proposes a design method for a detachable shuttle-shaped component composed of planar module units, comprising the following steps:

[0065] (1) Define the component aspect ratio λ a :

[0066] λ a =h / w,

[0067] Among them, h is the overall height of the component, and w is the width of the middle part of the component;

[0068] (2) Calculation of single-limb slenderness ratio λ b :

[0069] λ b =h b / i,

[0070] Among them, h b is the length of a single-leg pipe, i is the radius of gyration of the pipe section;

[0071] (3) Define the equivalent strength design value N of the component E :

[0072] N E =4f y A,

[0073] Among them, f y is the yield strength of the material, which can be obtained according to the "Steel Structure Design Standard" GB50017-2017, and A is the cross-sectional area of ​​a single-limb member;

[0074] (4) Definition of the influence coefficient of the stable bearing capacity of the detachable shuttle member

[0075]

[0076] (5) Calculate the stable bearing capacity of the detachable shuttle member N:

[0077]

[0078] For this shuttle-shaped component, the bearing capacity of the component is greatly affected by the stable bearing capacity of a single rod. In order to improve the stable bearing capacity of a single rod, the method of reducing the slenderness ratio of the rod and reducing the calculated length of the rod can be adopted. Based on this, the present invention also proposes a stiffness enhancement module, see Figure 6 , which can realize real-time stiffness enhancement of components during service. A stiffness enhancement module is respectively arranged in the upper structure and the lower structure, each stiffness enhancement module includes an internal reinforcement frame 18 and two external reinforcement frames 15, the internal reinforcement frame 18 is formed by four connecting plates 13 connected end to end, and an arc plate 14 is arranged outside each connection; the external reinforcement frame 15 includes a fixing plate 21, and an arc plate 14 is arranged at the end of the fixing plate 21. An internal reinforcement frame 18 is respectively arranged in the upper structure and the lower structure, and the four arc plates 14 are respectively fitted with each vertical pole, and the external reinforcement frames 15 are symmetrically arranged on both sides of the internal reinforcement frame 18, and the arc plates 14 of the internal reinforcement frame 18 are fitted with the vertical poles, and the fixing plates 21 are connected to the corresponding connecting plates 13 by bolts.

[0079] The connecting plate 13 and the fixing plate 21 of the detachable shuttle-shaped component are provided with bolt holes 16 and weight-reducing holes 17 .

[0080] When installing the stiffness enhancement module, first place the internal enhancement frame 18 between the module unit A10 and the module unit B11 from above, and make the arc plate 14 of the internal enhancement frame closely contact with the module unit rod, then make the arc plates of the two external enhancement frames 15 closely contact with the module unit rod, and align the bolt holes of the external enhancement frames with the bolt holes of the internal enhancement frames, and finally tighten with bolts.

[0081] In addition, to further improve the axial stability of this shuttle-shaped component, see Figure 7, module unit A10 and module unit B11 constrain the enhanced module unit A19 and the enhanced module unit B20 by changing the structure. The enhanced module unit A19 is to extend the middle slotted connecting plate 2 and the bottom slotted connecting plate 3 of the module unit A outward and set bolt holes, and the enhanced module unit B20 is to extend the middle plate 6 and the bottom plate 7 of the module unit B outward and set bolt holes, and tighten the bolt holes with bolts when connecting.

[0082] Through the finite element simulation analysis of the four-module detachable shuttle component made of Q355 steel, with a height of 3000mm, a middle width of 400mm, and a tube of Φ50mm×3.5mm seamless steel tube, the instability mode of the component is the bending of the local tube, which is a ductile failure, and the nonlinear stable bearing capacity of the component is as high as 407kN. The nonlinear buckling mode of the component is as follows Figure 8 shown.

[0083] The present invention can be applied to various axial components in permanent structures and temporary structures to achieve rapid assembly and convenient disassembly of the structure, solving the problems of weak bearing capacity and low flexibility of existing temporary structure rods and difficulty in disassembly and reuse of permanent structures.

[0084] The above descriptions are merely embodiments of the present invention and are not intended to limit the protection scope of the present invention. Any equivalent structure or equivalent process transformation made using the contents of the present invention specification and drawings, or directly or indirectly applied in other related system fields, are also included in the protection scope of the present invention.

Claims

1. A detachable shuttle-shaped component composed of planar module units, characterized in that: It comprises an upper structure and a lower structure of the same structure; the upper structure comprises a module unit A (10), a module unit B (11) and a slotted end plate (12); The module unit A comprises two first vertical poles (1), a middle slotted connecting plate (2) and a bottom slotted connecting plate (3); the middle slotted connecting plate (2) and the bottom slotted connecting plate (3) are arranged in parallel, and the ends of the two first vertical poles (1) are respectively fixed to the middle slotted connecting plate (2) and the bottom slotted connecting plate (3); the two first vertical poles (1) are arranged obliquely to form a trapezoidal plane with the middle slotted connecting plate (2) and the bottom slotted connecting plate (3); The module unit B comprises two second vertical poles (5), an intermediate plate (6) and a bottom plate (7); the intermediate plate (6) and the bottom plate (7) are arranged in parallel, and the ends of the two second vertical poles (5) are respectively fixed to the intermediate plate (6) and the bottom plate (7); the two second vertical poles (5) are arranged obliquely to form a trapezoidal plane with the intermediate plate (6) and the bottom plate (7); A protrusion is provided in the middle of one side of the slotted end plate (12), and a notch is provided in the middle of the protrusion; The module unit A (10) of the upper structure extends into the module unit B (11), wherein the middle of the intermediate slotted connecting plate (2) and the middle plate (6) are aligned; the middle of the bottom slotted connecting plate (3) and the bottom plate (7) are aligned, the convex surface of the slotted end plate (12) contacts the bottom plate (7), the convex surface is mutually embedded in the slot of the bottom slotted connecting plate (3) through the slot, the bottom surface of the slot contacts the bottom surface of the slot, and the middle of the bottom slotted connecting plate (3), the bottom plate (7) and the slotted end plate (12) are connected by bolts; The middle slotted connecting plates (2) of the upper structure and the lower structure are arranged vertically, the slots of the middle slotted connecting plates (2) are embedded in each other and fixed by bolts, the surface of the middle slotted connecting plate (2) of the upper structure is in contact with the surface of the middle plate (6) of the lower structure and fixed by bolts, and the middle plate (6) of the upper structure is in contact with the surface of the middle slotted connecting plate (2) of the lower structure and fixed by bolts.

2. A detachable shuttle-shaped component composed of planar module units according to claim 1, characterized in that: A stiffness enhancement module is respectively arranged in the upper structure and the lower structure, and the stiffness enhancement module comprises an internal reinforcement frame (18) and two external reinforcement frames (15), the internal reinforcement frame (18) is formed by connecting four connecting plates (13) end to end, and an arc plate (14) is arranged outside each connection; the external reinforcement frame (15) comprises a fixing plate (21), and an arc plate (14) is arranged at the end of the fixing plate (21); The four arc-shaped plates (14) are respectively fitted with the respective upright poles, the external reinforcement frame (15) is symmetrically arranged on both sides of the internal reinforcement frame (18), the arc-shaped plates (14) of the internal reinforcement frame (18) are fitted with the upright poles, and the fixing plate (21) is connected to the corresponding connecting plate (13) by bolts.

3. A detachable shuttle-shaped component composed of planar module units according to claim 2, characterized in that: Bolt holes (16) and weight-reducing holes (17) are provided on the connecting plate (13) and the fixing plate (21).

4. A detachable shuttle-shaped component composed of planar module units according to claim 3, characterized in that: The corners of the slotted end plates are provided with bolt holes (8) for connecting with the foundation or other components, and the center of the notch on the protrusion is provided with a bolt hole (9).

5. A detachable shuttle-shaped component composed of planar module units according to any one of claims 1 to 4, characterized in that: The two first upright poles (1) in the module unit A are respectively welded and fixed to the middle slotted connecting plate (2) and the bottom slotted connecting plate (3); The two second uprights (5) in the module unit B are respectively welded and fixed to the middle plate (6) and the bottom plate (7).

6. A detachable shuttle-shaped component composed of planar module units according to any one of claims 1 to 4, characterized in that: The first upright pole (1) of the module unit A and the second upright pole (5) of the module unit B are round tubes or rectangular tubes.

7. A detachable shuttle-shaped component composed of planar module units according to any one of claims 1 to 4, characterized in that: The middle plate (6) and the bottom plate (7) of the module unit B (11) are grooved plates or flat plates.

8. A detachable shuttle-shaped component composed of planar module units according to any one of claims 1 to 4, characterized in that: The first upright pole (1) of the module unit A (10) is respectively fixed to two sides of the middle slotted connecting plate (2) and the bottom slotted connecting plate (3); The second uprights (5) of the module unit B (11) are respectively fixed to both sides of the middle plate (6) and the bottom plate (7).

9. A detachable shuttle-shaped component composed of planar module units according to claim 8, characterized in that: The middle slotted connecting plate (2) and the bottom slotted connecting plate (3) of the module unit A (10) extend outwards and are provided with bolt holes; The middle plate (6) and the bottom plate (7) of the module unit B (11) extend outward and are provided with bolt holes.

10. A design method for a detachable shuttle-shaped component composed of planar module units, characterized in that: The following steps are involved: (1) Define the component aspect ratio λ a : l a =h / w, Among them, h is the overall height of the component, and w is the width of the middle part of the component; (2) Calculation of single-limb slenderness ratio λ b : λ b =h b / i, Among them, h b is the length of a single-leg pipe, i is the radius of gyration of the pipe section; (3) Define the equivalent strength design value N of the component E : N E =4f y A, Among them, f y is the yield strength of the material, which can be obtained according to the "Steel Structure Design Standard" GB50017-2017, and A is the cross-sectional area of ​​a single-limb member; (4) Definition of the influence coefficient of the stable bearing capacity of the detachable shuttle member (5) Calculate the stable bearing capacity of the detachable shuttle member N:

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