A double-layer steel cable-cast aluminum alloy special-shaped node

Abstract

The present invention discloses a double-layer steel cable-cast aluminum alloy special-shaped node, comprising a cast aluminum alloy connecting member, a steel cable, a positioning plate, a clip, a rubber ring, and an aluminum alloy box-shaped connecting rod with a hole, wherein the aluminum alloy box-shaped connecting rod with a hole is connected to the cast aluminum alloy connecting member through the steel cable. The double-layer steel cable-cast aluminum alloy special-shaped node uses less material than the existing traditional double-layer lattice shell node, is more convenient to construct, and has better rigidity and stability in the connection area of the structure. In addition, the traditional double-layer node is suitable for connecting H-shaped rods and circular rods. The double-layer steel cable-cast aluminum alloy special-shaped node designed by the present invention can connect rectangular rods with better overall bending resistance and shear resistance, and is a rod connection form of the double-layer lattice shell node. The present invention adopts a cast aluminum alloy special-shaped node connecting member to adjust the number of connection ports and the connection angle according to actual engineering requirements, so that the design of the double-layer lattice shell structure or the local double-layer lattice shell structure in the single-layer lattice shell structure is more flexible.

Description

Technical Field

[0001] The present invention relates to the technical field of connection nodes, and in particular to a double-layer steel cable-cast aluminum alloy special-shaped node. Background Art

[0002] In recent years, with the widespread application of various lightweight, high-strength materials, various forms of long-span spatial structures have been applied in engineering practice. As a major component of modern long-span spatial structures, the gridshell architectural system possesses a strong architectural artistic expression and is widely used in large-scale urban public buildings. Compared to the common single-layer gridshell structure, the double-layer gridshell structure has higher strength, rigidity, and load-bearing capacity.

[0003] The nodes of the double-layer lattice shell structure are one of the most important components of the double-layer lattice shell structure. Their structural form and mechanical properties will directly affect the overall performance of the double-layer lattice shell structure. At present, the common node forms of the double-layer lattice shell structure are bolt-ball nodes and plate nodes. However, the bolt-ball nodes require welding, which is not conducive to construction. The plate-type nodes have a large number of bolts at the connection between the metal cover plate and each rod, and the bolt openings are prone to stress concentration and cracking. Since the node forms of the above two types of double-layer lattice shell nodes have a large number of rods and nodes, they are not conducive to construction and have a large deadweight and high cost. For this reason, on the basis of the single-layer cast aluminum alloy lattice shell node, a combination of steel cables and cast aluminum alloy is adopted. This can not only give full play to the tensile strength of the steel cables, but also use the integrally cast cast aluminum alloy connection components to improve the overall strength and stability of the node. At the same time, it can also take advantage of the advantages of aluminum alloy such as light deadweight, high strength, good corrosion resistance, and easy extrusion molding.

[0004] In summary, under the premise of ensuring the safety, reliability and feasibility of the structure, a double-layer steel cable-cast aluminum alloy special-shaped node is designed. This node can be used in double-layer lattice shell structures or in the reinforcement structure of the local double layer in a single-layer lattice shell structure. Summary of the Invention

[0005] The purpose of the present invention is to provide a double-layer steel cable-cast aluminum alloy special-shaped node in order to solve the above problems. The double-layer steel cable-cast aluminum alloy special-shaped node uses less material than the existing traditional double-layer lattice shell node, is more convenient to construct, and has better rigidity and stability in the connection area of the structure. In addition, the traditional double-layer node is suitable for connecting H-shaped rods and circular rods. The double-layer steel cable-cast aluminum alloy special-shaped node designed by the present invention can connect rectangular rods with better overall bending and shearing performance, enriching the rod connection form of the double-layer lattice shell node. At the same time, the cast aluminum alloy special-shaped node connection component used in the present invention can adjust the number of connection ports and the connection angle according to actual engineering requirements, making the design of the local double-layer lattice shell structure in the double-layer lattice shell structure or the single-layer lattice shell structure more flexible.

[0006] To achieve the above object, the present invention adopts the following technical solutions:

[0007] A double-layer steel cable-cast aluminum special-shaped node includes a cast aluminum alloy connecting member, a steel cable, a positioning plate, a clip, a rubber ring, and an aluminum alloy box-shaped connecting rod with a hole. The aluminum alloy box-shaped connecting rod with a hole is connected to the cast aluminum alloy connecting member through the steel cable.

[0008] The cast aluminum alloy connecting member has multiple connection ports, and two connection ports on the same horizontal line are interconnected. The steel cable can pass through the two connection ports. The openings at the connection ports are circular holes, and the center of the circular hole is located on the same horizontal line as the center of the positioning plate. The end of the steel cable connected to the positioning plate is connected with the clip. The steel cable is passed through the opening clip from the small diameter end of the tapered opening clip, and the large diameter end of the tapered opening clip is clamped and fixed with the rubber ring. The clip is then inserted into the hole of the positioning plate, and the steel cable and the positioning plate are fixed by the clip.

[0009] Furthermore, the cast aluminum alloy connecting component is provided with a pouring hole above the connecting port, and is sealed below.

[0010] The aluminum alloy box-shaped connecting rod with holes has a rectangular construction window on its upper surface which is 1 / 5 of the rod length away from the rod end.

[0011] Furthermore, the aluminum alloy box-type connecting rod with holes has a positioning plate perpendicular to the length direction of the rod at an internal position 1 / 6 of the rod length away from the port, and a conical circular hole is provided on the positioning plate. The circular hole is a small diameter circle on the side close to the connecting component, and the diameter gradually increases along the length direction of the connecting rod. The number of the circular holes corresponds to the number of steel cables.

[0012] Furthermore, the clip is conical, with an inner diameter corresponding to the diameter of the steel cable, a groove on the inner wall of the clip, and a smooth outer wall in direct contact with the positioning plate. The clip has two symmetrical openings, and a groove is provided on the outside of the large diameter of the clip, which is fixed by a rubber ring.

[0013] A method for connecting a double-layer steel cable and a cast aluminum special-shaped node comprises the following steps:

[0014] (a) Insert the steel cable into one side of the connection and exit from the other end of the connection on the same horizontal plane;

[0015] (b) Extend the ends of the connecting members at both ends of the same horizontal line into the front end of the connecting rod to enhance the stability and shear strength of the connection;

[0016] (c) A steel cable is extended from one end of the connecting member and connected to the connecting rod, multiple strands of the steel cable are passed through corresponding holes and positioned by a positioning plate, and the ends of the multiple strands of the steel cable are fixed by a clip, with one end of the clip having a small opening close to the positioning plate;

[0017] (d) The other end of the steel cable extending from the connection port of the connecting member is connected in the same manner as in steps (b) and (c), and the connecting member is finally fixed to the two connecting rods on the same horizontal plane by the steel cable;

[0018] (e) Repeat steps (a) to (d) for each pair of through-connecting ports of the connecting member.

[0019] The present invention adopts cast aluminum alloy connecting members as nodes, and adopts multi-strand steel cables to connect the cast aluminum alloy connecting members and aluminum alloy box-type connecting rods with holes. The improved box-type connecting rods used in the present invention increase the diversity of the connecting rod forms that can be used for the double-layer lattice shell, and the box-type connecting rods have better stability, higher strength, and stronger shear resistance than the commonly used aluminum alloy H-shaped connecting rods. The connection method used in the present invention can effectively avoid the stress concentration phenomenon caused by the bolt holes, improve the overall stability of the cast aluminum alloy connecting members and the aluminum alloy connecting rods, prevent the cracking of the members and reduce the bearing capacity of the nodes, and the cast aluminum alloy used in the present invention is cast as a whole, and the overall strength and stability are better than the traditional double-layer plate nodes and bolt ball nodes, which can greatly save construction time and costs.

[0020] Compared with the existing double-layer lattice shell node types and node connection technologies, the present invention has the following beneficial effects:

[0021] 1. The use of integrally cast cast aluminum alloy connection components can improve the overall stability and strength of the central area of the node and reduce stress concentration and crack damage caused by bolt holes.

[0022] 2. The present invention provides a diversity of double-layer lattice shell node connection components. The cast aluminum alloy connection components and the aluminum alloy box-type connecting rods are connected by multiple steel cables. The performance of the box-type connecting rods is more stable than that of the aluminum alloy H-type rods and has stronger shear failure resistance, thereby improving the overall stability and strength of the double-layer lattice shell nodes.

[0023] 3. The ends of the connecting rods of the present invention are not welded, which can effectively avoid the reduction of the strength of the aluminum alloy components and the aluminum alloy connecting rods caused by welding, and can simplify the construction and improve the construction efficiency.

[0024] 4. The aluminum alloy box-type connecting rod and the cast aluminum alloy connecting member of the present invention are connected by steel cables. There is a gap between the connecting rod and the connecting member, which allows a small range of error, facilitates construction, is more practical, and can effectively improve the energy consumption capacity of the node under earthquake action.

[0025] 5. The present invention adopts cast aluminum alloy connecting components, which can effectively improve the construction quality, save materials, save labor and material costs, and have higher overall stability and bearing capacity compared to traditional double-layer plate nodes, double-layer bolt nodes, and double-layer truss nodes. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 It is a top view of the connection node of the present invention.

[0027] Figure 2 It is a schematic diagram of the connection structure of cast aluminum alloy special-shaped nodes.

[0028] Figure 3 This is a schematic diagram of an aluminum alloy box-type connecting rod with holes.

[0029] Figure 4 It is a schematic diagram of a multi-strand steel cable.

[0030] Figure 5 This is a schematic diagram of the positioning plate.

[0031] Figure 6 It is a schematic diagram of the clip. DETAILED DESCRIPTION

[0032] The present invention will be further described below with reference to the examples, which are merely intended to explain the present invention and are not intended to limit the present invention.

[0033] Combined with attachment Figure 1 The present embodiment is described. The double-layer steel cable-cast aluminum special-shaped node described in the present embodiment comprises a cast aluminum alloy connecting member (1), a connecting port (2), a pouring port (3), a steel cable (4), an aluminum alloy box-shaped connecting rod with a hole (5), a positioning plate (6), an inner conical positioning hole (7), a construction port (8), a clip (9), and a rubber ring (10). The multiple strands of the steel cable (4) are connected to the aluminum alloy box-shaped connecting rod with a hole (5) and the special-shaped cast aluminum alloy connecting member (1) through the connecting port (2) on the same horizontal line, and are connected through the positioning plate (6) located inside the aluminum alloy box-shaped connecting rod with a hole (5), and then fixed with the clip (9).

[0034] Combined with attachment Figure 2, explaining that in this embodiment, the special-shaped cast aluminum alloy connecting component (1) is composed of the eight connecting ports (2), and a pouring port (3) is provided on the top of the special-shaped cast aluminum alloy connecting component (1) to facilitate pouring adhesive after inserting multiple strands of steel cables, and the bottom of the cast aluminum alloy connecting component (1) is sealed.

[0035] In this embodiment, the size and opening angle of the special-shaped cast aluminum alloy connecting member (1) and the number and opening size of the connecting port (2) can be adjusted accordingly during modeling according to the actual project requirements and the number of strands of the steel cable. The ports of the connecting members at both ends of the same horizontal line are extended into the front ports of the aluminum alloy perforated box-shaped connecting rod (5), which plays a role in enhancing the overall stability of the connecting port. When the connecting rod is too long, the connecting member can be appropriately fixed by bolts extending into the connecting rod part to improve the shear resistance of the node.

[0036] Combined with attachment Figure 3 , explaining that in this embodiment, the aluminum alloy box-shaped connecting rod (5) with holes is provided with the rectangular construction opening (8) on the upper surface at 1 / 5 of the length of the connecting rod from the connection port, so as to facilitate fixing with the clip (9) after inserting multiple strands of steel cables, and also facilitate the inspection and maintenance of the cables after the double-layer steel cable-cast aluminum special-shaped node is put into service.

[0037] Combined with attachment Figure 3 ~Attached Figure 5 The inner portion of the aluminum alloy perforated box-shaped connecting rod (5) is provided with the inner conical multi-hole positioning plate (6) corresponding to the multi-strand steel cable (4) in a direction perpendicular to the length of the connecting rod. In this embodiment, 19-strand steel cable (4) is used, and the multi-hole positioning plate (6) has 19 holes. The positioning plate (6) is located at a position where the length from the port accounts for 1 / 6 of the entire length of the connecting rod. The center of the circular hole and the center of the center circle of the 19 holes of the steel cable are located on the same horizontal line.

[0038] Combined with attachment Figure 5 , indicating that in this embodiment, the inner conical positioning hole (7) is in the shape of an inner cone, and the diameter of the inner conical hole gradually increases along the length direction of the aluminum alloy perforated box-shaped connecting rod (5), and the inner diameter of the inner conical positioning hole (7) corresponds to the outer diameter of the steel cable (4).

[0039] Combined with attachment Figure 6, it is explained that in this embodiment, the clip (9) is in the shape of an inner cone, and the inner wall is provided with a groove to increase the friction with the steel cable (4), and the outer wall is smooth to facilitate embedding with the inner cone positioning hole (7). During installation, the small opening end of the clip (9) faces the end of the aluminum alloy box-shaped connecting rod with holes (5), and the inner diameter gradually increases along the length direction of the connecting rod (5). Finally, the steel cable (4) and the aluminum alloy box-shaped connecting rod with holes (5) are fixed. The clip (9) has two symmetrical openings, and a groove is provided on the outside of the large diameter of the clip (9), and the groove is fixed by a rubber ring (10).

[0040] Although the preferred embodiments of the present invention are described above in conjunction with the accompanying drawings, the present invention is not limited to the above-mentioned specific implementation method. The above-mentioned specific implementation method is merely an illustrative description and is not restrictive. Under the guidance of the present invention, ordinary persons in this field can make more forms without departing from the scope of protection of the present invention, the purpose and claims. These all fall within the scope of protection of the present invention. The present invention can be applied to local double-layer reinforcement of single-layer lattice shell structures, and can also be applied to overall double-layer lattice shells.

Claims

1. A double-layer steel cable-cast aluminum alloy special-shaped node, characterized in that: It includes a cast aluminum alloy connecting member, a steel cable, a positioning plate, a clip, a rubber ring, and an aluminum alloy box-shaped connecting rod with a hole; the aluminum alloy box-shaped connecting rod with a hole is connected to the cast aluminum alloy connecting member through the steel cable; The cast aluminum alloy connecting member has a plurality of connecting ports, which are staggered along a vertical line, and two connecting ports on the same horizontal line are interconnected. The steel cable can pass through the two connecting ports. The openings at the connecting ports are in the shape of circular holes, and the center of the circular hole is located on the same horizontal line as the center of the positioning plate. The ends of the steel cable connected to the positioning plate are connected with the clip. The steel cable is passed through the opening clip from the small-diameter end of the tapered opening clip, and the large-diameter end of the tapered opening clip is fixed with a hoop using the rubber ring. Then, the clip is embedded in the hole of the positioning plate, and the steel cable is fixed to the positioning plate through the clip. The aluminum alloy box-type connecting rod with holes has a rectangular construction window on the upper surface at a distance of 1 / 5 of the rod length from the rod end; the aluminum alloy box-type connecting rod with holes has a positioning plate perpendicular to the length direction of the rod at an internal distance of 1 / 6 of the rod length from the port, and the positioning plate is provided with a conical circular hole. The circular hole is a small diameter circle on the side close to the connecting member, and the diameter gradually increases along the length direction of the connecting rod. The number of the circular holes corresponds to the number of steel cables.

2. The double-layer steel cable-cast aluminum alloy special-shaped node according to claim 1, characterized in that: The cast aluminum alloy connecting component is provided with a pouring hole above the connecting port and is sealed below.

3. The double-layer steel cable-cast aluminum alloy special-shaped node according to claim 1, characterized in that: The clip is conical, with an inner diameter corresponding to the diameter of the steel cable. There is a groove on the inner wall of the clip, and the outer wall of the clip is smooth and in direct contact with the positioning plate. The clip has two symmetrical openings, and a groove is provided on the outside of the large diameter of the clip, which is fixed by a rubber ring.

4. A method for connecting a double-layer steel cable and a cast aluminum alloy special-shaped node according to any one of claims 1 to 3, characterized in that: The following steps are involved: (a) Insert the steel cable into one side of the connection and exit from the other end of the connection on the same horizontal plane; (b) Extend the ends of the connecting members at both ends of the same horizontal line into the front end of the connecting rod to enhance the stability and shear strength of the connection; (c) A steel cable is extended from one end of the connecting member and connected to the connecting rod, multiple strands of the steel cable are passed through corresponding holes and positioned by a positioning plate, and the ends of the multiple strands of the steel cable are fixed by a clip, with one end of the clip having a small opening close to the positioning plate; (d) The other end of the steel cable extending from the connection port of the connecting member is connected in the same manner as in steps (b) and (c), and the connecting member is finally fixed to the two connecting rods on the same horizontal plane by the steel cable; (e) Repeat steps (a) to (d) for each pair of through-connecting ports of the connecting member.

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