Hybrid tensegrity grid structure and method of use thereof

Abstract

The application provides a hybrid tensile cable lattice structure and relates to the field of tensile beam structures. The hybrid tensile cable lattice structure comprises two tensile two-bar structure units with two bars, the tensile two-bar structure units are configured to form three-claw orthogonal bar assemblies when deformed, two groups of the three-claw orthogonal bar assemblies are oppositely arranged at a certain rotation angle, connected through connecting rods, and the boundaries of the two groups of three-claw orthogonal bar assemblies are enclosed by tensile cables to form the hybrid tensile cable lattice structure. The hybrid tensile cable lattice structure is a self-balancing structure unit, can adapt to positive and negative bidirectional loads, and maintains structural stability. The hybrid tensile cable lattice structure improves the problem that the existing tensile beam roof structure is easily unstable under the action of wind pressure suction and other negative loads, the prestress form of the tensile cable is changed, and stable tie rods need to be added to fix the tensile cable to maintain the prestress form.

Description

Technical Field

[0001] This invention relates to the field of tensioned beam structure technology, and more specifically, to a hybrid tensioned mesh structure and its application method. Background Technology

[0002] Tensioned beams are prestressed steel structures. Proposed by Kimio Saito of Nihon University in the 1980s, they are a hybrid rigid-flexible structure consisting of a rigid upper chord (Beam) and high-strength tension cables / rods (String), connected by several struts. They utilize form resistance and prestress to resist external loads, making them a highly efficient long-span spatial structure system.

[0003] The essence of a tensioned structure is to apply prestress to the tension members, transmit force through the struts connecting the upper and lower chords, and cause the upper structure to deflect in the opposite direction, thereby reducing the final deflection under load, improving the stress state of the upper members, changing the bending moment distribution, reducing the peak bending moment, and reducing the horizontal thrust generated by the structure on the support ends by adjusting the prestress of the tension members, making it a self-balancing system.

[0004] However, existing tensioned beam roof structures have good stiffness under positive loads, but are prone to instability under negative loads such as wind pressure and suction because the cables change the prestress form. Therefore, it is necessary to add stabilizing tie rods to fix the cables in order to maintain the prestress form. Summary of the Invention

[0005] This invention discloses a hybrid tensioned mesh structure, which aims to improve the above-mentioned technical problems.

[0006] The present invention adopts the following solution:

[0007] A hybrid tensioned grid structure includes a tensioned two-bar structural unit with two rods, wherein the tensioned two-bar structural unit is configured to form a three-claw orthogonal rod assembly when deformed; the two sets of the three-claw orthogonal rod assemblies are arranged opposite each other at a certain rotation angle and connected by a connecting rod, and the boundaries of the two sets of three-claw orthogonal rod assemblies are enclosed by tension cables to form a hybrid tensioned grid structure.

[0008] As a further improvement, the two sets of three-jaw orthogonal rod assemblies are arranged with their centers facing each other, and the connecting rod is connected between the two centers.

[0009] As a further improvement, the length of the connecting rod is adjustable.

[0010] As a further improvement, the upper three-claw orthogonal rod assembly in the two sets of the three-claw orthogonal rod assemblies is the upper chord three-claw; the lower three-claw orthogonal rod assembly is the lower chord three-claw.

[0011] As a further improvement, the three pawls of the upper chord and the three pawls of the lower chord are set to be opposite each other and rotated at a 60-degree angle.

[0012] As a further improvement, the boundaries of the three claws of the upper chord and the three claws of the lower chord are enclosed by tension cables to form a regular hexagon.

[0013] As a further improvement, it can adapt to both positive and negative bidirectional loads.

[0014] A method of using the hybrid tensioned mesh structure described above includes:

[0015] Under positive load, the upper three-claw orthogonal bar assembly of the two sets of three-claw orthogonal bar assemblies is under compression and the tension cable is under tension, while the lower three-claw orthogonal bar assembly is under auxiliary tension.

[0016] Under negative load, the lower three-claw orthogonal bar assembly of the two sets of three-claw orthogonal bar assemblies is mainly under compression to stabilize the prestressed state of the tension cable system, while the upper three-claw orthogonal bar assembly is under tension.

[0017] By adopting the above technical solution, the present invention can achieve the following technical effects:

[0018] The hybrid tensioned wire mesh structure of this application is a self-balancing structural unit, capable of adapting to both positive and negative loads while maintaining structural stability. It improves upon the problem of existing tensioned beam roof structures, which are prone to instability under negative loads such as wind pressure and suction due to changes in prestressing form caused by the cables, requiring additional stabilizing tie rods to connect and fix the cables to maintain the prestressing form. Furthermore, this structure exhibits consistent internal and external performance and high versatility. Attached Figure Description

[0019] To more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of the present invention and should not be regarded as a limitation of the scope. For those skilled in the art, other related drawings can be obtained from these drawings without creative effort.

[0020] Figure 1 This is a schematic diagram of the deformation of the tensioned two-bar structural unit into a three-claw orthogonal bar assembly in the hybrid tensioned mesh structure of the present invention;

[0021] Figure 2 This is a schematic diagram of the overall structure of the hybrid tensioned grid structure of the present invention. Detailed Implementation

[0022] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort 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 accompanying drawings is not intended to limit the scope of the claimed invention, but merely to represent selected embodiments of the invention. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0023] Example

[0024] The first embodiment of this invention provides a hybrid tensioned wire mesh structure, including a tensioned two-bar structural unit with two members. The tensioned two-bar structural unit is configured to form a three-claw orthogonal bar assembly 20 during deformation. Two sets of three-claw orthogonal bar assemblies 20 are positioned opposite each other at a certain rotational angle and connected by connecting rods 4. The boundaries of the two sets of three-claw orthogonal bar assemblies 20 are enclosed by tension cables 3 to form a hybrid tensioned wire mesh structure. This structure is a self-balancing structural unit, capable of adapting to both positive and negative loads while maintaining structural stability. It improves upon the problem of existing tensioned wire beam roof structures being prone to instability under negative loads such as wind pressure suction, where the cables change the prestress form and require additional stabilizing rods to connect and fix the cables to maintain the prestress form.

[0025] Furthermore, the two sets of three-claw orthogonal rod assemblies 20 are arranged with their centers 30 facing each other, and the connecting rod 4 connects the two centers 30 to increase the overall rigidity. The length of the connecting rod 4 is adjustable to control the degree of relative interlacing of the upper and lower chords, forming different degrees of roof truss shapes.

[0026] Combination Figure 1 , Figure 2 Specifically, of the two sets of three-jaw orthogonal bar assemblies 20, the upper three-jaw orthogonal bar assembly 20 is the upper chord three-jaw 1; the lower three-jaw orthogonal bar assembly 20 is the lower chord three-jaw 2. The upper chord three-jaw 1 and the lower chord three-jaw 2 are positioned opposite each other and rotated at a 60-degree angle, and their boundaries are enclosed by the tension cable 3 to form a regular hexagon. The 60-degree rotation ensures that the boundaries of the upper chord three-jaw 1 and the lower chord three-jaw 2 can be successfully enclosed by the tension cable 3 to form a regular hexagon.

[0027] The assembly process is as follows: First, prepare two sets of tensioned two-bar structural units. Then, deform the two bars in each set of tensioned two-bar structural units into two sets of three-claw orthogonal bar assemblies 20. The two sets of three-claw orthogonal bar assemblies 20 are positioned opposite each other at a certain 60-degree rotation angle. The boundaries of the two sets of three-claw orthogonal bar assemblies 20 are enclosed by tension cables 3. Finally, connect the connecting rods 4 between the centers 30 of the two sets of three-claw orthogonal bar assemblies 20 to complete the assembly of the hybrid tensioned wire mesh structure. If it is necessary to change the shape of the hybrid tensioned wire mesh structure, simply adjust the length of the connecting rods 4.

[0028] The second embodiment of the present invention provides a method of using the hybrid tensioned mesh structure described above, comprising:

[0029] Under positive load, the upper three-claw orthogonal member 20 (upper chord three-claw 1) of the two sets of three-claw orthogonal member assemblies 20 bears the load under compression, while the tension cable 3 is under tension. The lower three-claw orthogonal member 20 (lower chord three-claw 2) is under auxiliary tension. Under negative load, the lower three-claw orthogonal member 20 (lower chord three-claw 2) of the two sets of three-claw orthogonal member assemblies 20 is mainly under compression to stabilize the prestressed state of the tension cable 3 system and maintain the overall stiffness. The upper three-claw orthogonal member 20 (upper chord three-claw 1) is under tension.

[0030] In summary, this invention maintains the overall structural balance under both positive and negative loads. Furthermore, the structure of this invention can be applied to the construction of indoor and outdoor roofs and landscape features, and is more convenient to construct than traditional two-dimensional tensioned beam structures.

[0031] The above are merely preferred embodiments of the present invention. The scope of protection of the present invention is not limited to the above embodiments. All technical solutions that fall within the scope of the present invention are within the scope of protection of the present invention.

Claims

1. A hybrid tensioned mesh structure, characterized in that, The structure includes a tensioned two-bar structural unit with two members, configured to form a three-claw orthogonal bar assembly during deformation; two sets of the three-claw orthogonal bar assemblies are arranged opposite each other at a certain rotation angle and connected by connecting rods, with the boundaries of the two sets of three-claw orthogonal bar assemblies enclosed by tension cables to form a hybrid tensioned wire mesh structure; wherein, Two sets of three-jaw orthogonal rod assemblies are arranged with their centers facing each other, and a connecting rod is connected between the two centers; the length of the connecting rod is adjustable; the upper three-jaw orthogonal rod assembly is the upper chord three-jaw; the lower three-jaw orthogonal rod assembly is the lower chord three-jaw; the upper chord three-jaw and the lower chord three-jaw are opposite each other and arranged at a 60-degree rotation angle; The boundaries of the three claws of the upper chord and the three claws of the lower chord are enclosed by the tension cable to form a regular hexagon.

2. A method of using the hybrid tensioned mesh structure according to claim 1, comprising: Under positive load, the upper three-claw orthogonal bar assembly of the two sets of three-claw orthogonal bar assemblies is under compression and the tension cable is under tension, while the lower three-claw orthogonal bar assembly is under auxiliary tension. Under negative load, the lower three-claw orthogonal bar assembly of the two sets of three-claw orthogonal bar assemblies is mainly under compression to stabilize the prestressed state of the tension cable system, while the upper three-claw orthogonal bar assembly is under tension.

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