A large-opening single-layer cable net structure combining a coupled-square type and a ribbed-ring type grid

Abstract

The present invention relates to the technical field of structural design in construction engineering, and particularly to a large-opening single-layer cable net structure combining a quadrilateral grid and a ribbed ring grid. The present invention includes: a ring cable, a radial cable, a cross cable, and a balance cable; the ring cable is located in the middle area of the roof and encloses the required shape of the roof center opening; the inner end of the radial cable is connected to the node of the ring cable, and the outer end of the radial cable is connected to the node of the innermost cross cable; the outermost cross cable is connected to the outer boundary; the balance cable is arranged at the connection node of the radial cable and the cross cable, and successively connects the connection nodes of the radial cable and the cross cable to form a closed ring. The present invention combines the cross cable and the radial cable of the quadrilateral grid, and the inner end of the radial cable is connected to the ring cable and the outer end is connected to the cross cable, which can achieve uniform distribution of the ring cable force and greatly reduce the unbalanced force of the cable clamp.

Description

Technical Field

[0001] The present invention relates to the technical field of structural design of construction engineering, and particularly relates to a large-opening single-layer cable net structure combining a quadrilateral grid and a ribbed ring grid. Background Art

[0002] The prestressed cable structure is composed of flexible cables that only bear tension and rigid members that bear tension and compression. It is a large-span structural system with strong spanning ability and good mechanical properties. Since the cables are made of high-strength materials and are in a tensile state during the structural load-bearing process, there is no problem of member stability, and the stress efficiency is high. Therefore, its cross-sectional size is much smaller than that of concrete members and steel members, and it can create a light and transparent architectural effect. Due to the above advantages, the prestressed cable structure has been widely used in the roof structures of large-span buildings such as stadiums and exhibition halls.

[0003] Currently, when applied to the stadium roof structure, the cable structure usually consists of a circular cable 1 in the center of the roof and a cross-cable system between the circular cable 1 and the outer boundary. According to the architectural shape requirements, the cross-cable system can adopt the cross-cables 3 of the quadrilateral grid or the radial cables 4, as Figure 1 shown. The common stadium roof structures mainly adopt the double-layer cable structure system, but in recent years, there have also been engineering cases using a saddle-shaped single-layer cable net as the stadium roof structure, that is, the roof structure is only composed of a layer of circular cable 1 and a layer of cross-cable system, as Figure 2 shown.

[0004] When the circular cable and the outer boundary are connected by cross-cables, since there are inevitably component forces in the tangential direction of the circular cable in the cross-cables, a large unbalanced force will be generated at the cable clip node where the cross-cable is connected to the circular cable, resulting in an increase in the volume of the cable clip and even the need to set up special balance cables to resist the unbalanced force at the cable clip, which brings difficulties to the structural design and construction and increases the project cost.

[0005] The information disclosed in this background art section is only intended to deepen the understanding of the overall background art of the present invention, and should not be regarded as an admission or any form of suggestion that this information constitutes the prior art known to those skilled in the art. Summary of the Invention

[0006] The purpose of the present invention is to provide a large-opening single-layer cable net structure combining a quadrilateral grid and a ribbed ring grid, which combines the cross-cables of the quadrilateral grid with the radial cables. The inner end of the radial cable is connected to the circular cable, and the outer end is connected to the cross-cable, so as to achieve uniform distribution of the circular cable force and greatly reduce the unbalanced force of the cable clip.

[0007] In order to achieve the above purpose, the present invention adopts the following technical solutions:

[0008] The present invention provides a large-opening single-layer cable net structure combining a quadrilateral grid and a ribbed ring grid, which includes: a circumferential cable, a radial cable, a cross cable, and a balance cable; the circumferential cable is located in the middle area of the roof and encloses the required shape of the roof center opening; the inner end of the radial cable is connected to the node of the circumferential cable, and the outer end of the radial cable is connected to the node of the innermost cross cable; the outermost cross cable is connected to the outer boundary; the balance cable is arranged at the connection node of the radial cable and the cross cable, successively connecting the connection nodes of the radial cable and the cross cable to form a closed ring.

[0009] Preferably, the cross cables form a quadrilateral grid.

[0010] Preferably, the circumferential cable, the radial cable, and the balance cable form a ribbed ring grid.

[0011] Preferably, the radial cable is aligned or tends to be aligned with the angular bisector direction of the plane projections of two adjacent circumferential cables.

[0012] Adopting the above technical solution, the present invention has the following beneficial effects:

[0013] 1. The present invention provides a large-opening single-layer cable net structure combining a quadrilateral grid and a ribbed ring grid, which has the characteristics of simple architectural effect and strong sense of rhythm, and is convenient for construction and has a short construction period.

[0014] 2. The present invention sets a balance cable between the connection nodes of the radial cable and the cross cable, which can balance the circumferential component force of the cross cable at the innermost node, so that the radial cable only transmits the radial component force of the cross cable; further, by arranging the radial cable strictly or approximately along the angular bisector direction of the plane projections of two adjacent circumferential cables, the cable force of the circumferential cable can be made more uniform, and the unbalanced force at the cable clamp is greatly reduced compared with the way of directly connecting the cross cable and the circumferential cable, thereby reducing the volume of the cable clamp and improving the structural safety and economy. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the following will briefly introduce the drawings required for use in the description of the specific embodiments or the prior art. Obviously, the following drawings are some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0016] Figure 1 It is a schematic plan view of a single-layer cable structure of a stadium roof in the prior art.

[0017] Figure 2 It is an axonometric schematic view of a single-layer cable structure of a stadium roof in the prior art.

[0018] Figure 3It is the plan view of the large-opening single-layer cable net structure combining the quadrilateral and ribbed ring meshes provided by the embodiments of the present invention.

[0019] Figure 4 It is the axonometric view of the large-opening single-layer cable net structure combining the quadrilateral and ribbed ring meshes provided by the embodiments of the present invention.

[0020] Icon: 1 - Ring cable; 2 - Outer boundary; 3 - Cross cable; 4 - Radial cable; 5 - Balance cable. Specific embodiments

[0021] Next, the technical solutions of the present invention will be clearly and completely described in conjunction with the accompanying drawings. Obviously, the described embodiments are part of the embodiments of the present invention, rather than all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0022] In the description of the present invention, it should be noted that the orientation or positional relationship indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. is based on the orientation or positional relationship shown in the accompanying drawings. It is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus cannot be understood as a limitation to the present invention. In addition, the terms "first", "second", "third" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0023] In the description of the present invention, it should be noted that unless otherwise clearly specified and defined, the terms "installation", "connection", "connection" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0024] The following will describe the specific embodiments of the present invention in detail with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are only used to illustrate and explain the present invention, and are not used to limit the present invention.

[0025] Combined with Figure 3 、 Figure 4As shown in the figure, this embodiment provides a large-opening single-layer cable net structure combining a quadrilateral grid and a ribbed ring grid, including: a ring cable 1, a radial cable 4, a cross cable 3, and a balance cable 5; the ring cable 1 is located in the middle area of the roof and encloses the required shape of the roof center opening; the inner end of the radial cable 4 is connected to the node of the ring cable 1, and the outer end of the radial cable 4 is connected to the node of the innermost cross cable 3; the outermost cross cable 3 is connected to the outer boundary 2; the balance cable 5 is arranged at the connection node of the radial cable 4 and the cross cable 3, and sequentially connects the connection nodes of the radial cable 4 and the cross cable 3 to form a closed ring. Preferably, the cross cable 3 forms a quadrilateral grid according to the requirements of the building shape. Preferably, the ring cable 1, the radial cable 4, and the balance cable 5 form a ribbed ring grid. It can be seen that in this embodiment, the cross cable 3 of the quadrilateral grid is combined with the radial cable 4. The inner end of the radial cable 4 is connected to the ring cable 1, and the outer end is connected to the cross cable 3, which can achieve uniform distribution of the cable force of the ring cable 1 and greatly reduce the unbalanced force of the cable clamp.

[0026] Preferably, the radial cable 4 is aligned with or tends to be aligned with the angular bisector direction of the plane projections of two adjacent segments of the ring cable 1. By arranging the radial cable 4 strictly or approximately along the angular bisector direction of the plane projections of two adjacent segments of the ring cable 1, the cable force of the ring cable 1 can be made more uniform, and the unbalanced force at the cable clamp is greatly reduced compared to the way that the cross cable 3 is directly connected to the ring cable 1, thereby reducing the volume of the cable clamp and improving the structural safety and economy.

[0027] In summary, adopting the above technical solutions, the present invention has the following advantages:

[0028] 1. The single-layer cable net structure of the present invention is composed of a combination of a quadrilateral grid and a ribbed ring grid, featuring a simple building effect, strong sense of rhythm, and convenient construction with a short cycle.

[0029] 2. The present invention provides a balance cable between the connection nodes of the radial cable and the cross cable, which can balance the circumferential component force of the cross cable at the innermost node, enabling the radial cable to only transmit the radial component force of the cross cable; further, by arranging the radial cable strictly or approximately along the angular bisector direction of the plane projections of two adjacent segments of the ring cable, the cable force of the ring cable can be made more uniform, and the unbalanced force at the cable clamp is greatly reduced compared to the way that the cross cable is directly connected to the ring cable, thereby reducing the volume of the cable clamp and improving the structural safety and economy.

[0030] Finally, it should be noted that: the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that: they can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements on some or all of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A large-opening single-layer cable net structure combining a quadrilateral type and a ribbed ring type, characterized in that, Including: Circular cables, radial cables, cross cables and balance cables; The circular cables are located in the middle area of the roof and enclose the required shape of the roof center opening; The inner ends of the radial cables are connected to the nodes of the circular cables, and the outer ends of the radial cables are connected to the nodes of the innermost cross cables; the nodes of the outermost cross cables are connected to the outer boundary; the balance cables are arranged at the connection nodes of the radial cables and the cross cables, successively connecting the connection nodes of the radial cables and the cross cables to form a closed loop; The cross cables form a quadrilateral grid; The circular cables, radial cables and balance cables form a ribbed ring grid.

2. The large-opening single-layer cable net structure combined with a joint square type and a ribbed ring type according to claim 1, characterized in that The radial cables are aligned or tend to be aligned with the angular bisector direction of the plane projections of two adjacent circular cables.

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