Suspended aluminum alloy grid structure system and its construction method

Abstract

The present invention relates to a chord-supported aluminum alloy grid structure system and a construction method thereof, the system comprising: support columns arranged at intervals along the edge of a set area; a grid structure placed on the support columns and covering the set area, a plurality of grids formed on the grid structure; a cable net structure arranged below the grid structure and adapted to the grid structure, the cable net structure being connected to the grid structure. The present invention utilizes the cable net structure to provide elastic support for the grid structure, increase the rigidity of the grid structure, and reduce the deflection, so that support columns are not required inside the set area, the number of support columns is reduced, and the support columns at the edge will not affect indoor lighting, thereby ensuring a high indoor lighting rate. The cable net structure and the grid structure are combined to form a rigid-flexible hybrid structure, which can give full play to the advantages of both rigid aluminum alloy rods and flexible cables, so that the boundary of the grid structure can adapt to the structural form of the free boundary.

Description

Technical Field

[0001] The invention relates to the field of aluminum alloy structural engineering, and in particular to a chord-supported aluminum alloy grid structural system and a construction method thereof. Background Art

[0002] Aluminum alloys are used more and more widely as structural load-bearing materials due to their advantages of being lightweight, corrosion-resistant, easy to extrude, industrialized, assembled, easy to recycle, low reprocessing cost, and high reuse rate. Aluminum alloy grid structures have gradually become a common large-span structural system. The current aluminum alloy single-layer grid structure system is mostly used in shell structures with components such as cylindrical lattice shells and spherical shells that are mainly tensile. This type of structural system generally requires strong boundary support and constraints, and cannot meet the requirements of plane and frame buildings. It is also difficult to adapt to complex boundary structures, especially free boundary structures, as well as the force requirements of ever-changing structural systems.

[0003] The traditional aluminum alloy grid structure system is a planar grid structure formed by connecting plate nodes. In order to meet the requirements of its support stability, it is necessary to cover the bottom of the grid structure with support columns. The design of such support columns will affect the use of the area below the grid structure. The large number of support columns will also affect indoor lighting, and the indoor space of the building cannot be fully utilized. Summary of the invention

[0004] The purpose of the present invention is to overcome the defects of the prior art, provide a chord-supported aluminum alloy grid structure system and a construction method thereof, solve the problem that the existing aluminum alloy single-layer grid structure requires strong boundary support and constraints, making it unable to meet the requirements of plane and frame buildings, and is also difficult to adapt to structural forms with complex boundaries, and solve the problem that the traditional plate-type node grid structure needs to be full of support columns, which affects indoor lighting and full utilization of the lower space.

[0005] The technical solution to achieve the above purpose is:

[0006] The present invention provides a chord-supported aluminum alloy grid structure system, comprising:

[0007] Support columns are arranged at intervals along the edges of the set area;

[0008] a grid structure disposed on the support column and covering the set area, wherein a plurality of grids are formed on the grid structure; and

[0009] A cable net structure is arranged below the grid structure and matched with the grid structure, and the cable net structure is connected to the grid structure.

[0010] The chord-supported aluminum alloy grid structure system of the present invention supports the grid structure by supporting columns arranged at the edge, and a cable net structure is arranged below the grid structure. The cable net structure is used to provide elastic support for the grid structure, increase the rigidity of the grid structure, and reduce the deflection, so that no supporting columns are required inside the set area, reducing the number of supporting columns, and the supporting columns at the edge will not affect the indoor lighting, thereby ensuring a high indoor lighting rate. The cable net structure and the grid structure are combined to form a rigid-flexible hybrid structure. The system has a simple structure, clear force, and the structural form can be flexibly adjusted according to the required architectural form. It can give full play to the advantages of the two materials of rigid aluminum alloy rods and flexible cables, so that the boundary of the grid structure can adapt to the structural form of the free boundary and meet the force requirements of the ever-changing structural system. The structural system can be applied to large-span aluminum alloy plane or frame structure systems, expanding the application scope of aluminum alloy structures.

[0011] A further improvement of the chord-supported aluminum alloy grid structure system of the present invention is that the grid structure includes a plurality of aluminum alloy rods connected by splicing, and the plurality of aluminum alloy rods are enclosed to form a corresponding grid, and adjacent aluminum alloy rods are connected through connection nodes, and at least three aluminum alloy rods are provided at one connection node.

[0012] A further improvement of the chord-supported aluminum alloy grid structure system of the present invention is that the connection node comprises a connection core provided at the connection, an upper node plate provided at the top of the connection core, and a lower node plate provided at the bottom of the connection core;

[0013] The connecting core is supported between the upper node plate and the lower node plate, and the side of the connecting core is provided with a wing plate connected to the corresponding aluminum alloy rod;

[0014] The upper node plate cover is arranged on the top of the corresponding aluminum alloy rod and is fixedly connected to the corresponding aluminum alloy rod;

[0015] The lower node plate is attached to the bottom of the corresponding aluminum alloy rod and is fixedly connected to the corresponding aluminum alloy rod.

[0016] A further improvement of the chord-supported aluminum alloy grid structure system of the present invention is that the connection node further includes a tie rod disposed at the side of two adjacent aluminum alloy rods, the tie rod is arc-shaped, and the side of the tie rod close to the aluminum alloy rod is provided with an upper tie plate and a lower tie plate;

[0017] The upper tie plate and the lower tie plate are both fixedly connected to the corresponding aluminum alloy rods, and the upper tie plate is also fixedly connected to the upper node plate, and the lower tie plate is fixedly connected to the lower node plate.

[0018] A further improvement of the chord-supported aluminum alloy grid structure system of the present invention is that it also includes a plurality of force transmission rods supported and connected between the cable net structure and the grid structure, and the tops of the force transmission rods are connected to the grid structure via universal ball joint supports.

[0019] The present invention also provides a construction method of a chord-supported aluminum alloy grid structure system, comprising the following steps:

[0020] Providing support columns, which are erected at intervals along the edges of the set area of ​​the chord-supported aluminum alloy grid structure system;

[0021] Providing aluminum alloy rods, and assembling the aluminum alloy rods on the top of the support column to form a grid structure covering the set area, wherein a plurality of grids are formed on the assembled grid structure;

[0022] A cable is provided and installed below the grid structure, so that a cable net structure matching the grid structure is formed by the cable.

[0023] A further improvement of the construction method of the present invention is that, when assembling the aluminum alloy rods, the ends of at least three aluminum alloy rods are butted together, a connecting core is provided at the butt joint, and the connecting core is connected to the corresponding aluminum alloy rods;

[0024] An upper node plate and a lower node plate are provided, and the upper node plate and the lower node plate are arranged at the top and the bottom of the connection core, and the upper node plate is fixedly connected to the corresponding aluminum alloy rod, and the lower node plate is fixedly connected to the corresponding aluminum alloy rod.

[0025] A further improvement of the construction method of the present invention is that it also includes:

[0026] A tie rod is provided, which is arranged on the side of the joint between two adjacent aluminum alloy rods, and the tie rod is fixedly connected to the corresponding aluminum alloy rod, and the tie rod is fixedly connected to the corresponding upper node plate and lower node plate.

[0027] A further improvement of the construction method of the present invention is that it also includes:

[0028] A fastener is provided, and the fastener is inserted into the interior of the connection core, the bottom of the fastener is fixedly connected to the lower node plate, and the top of the fastener is passed through the upper node plate and is fastened to the upper node plate.

[0029] A further improvement of the construction method of the present invention is that when installing the cable, a force transfer rod is provided, the force transfer rod support is connected between the cable and the corresponding aluminum alloy rod, and the top of the force transfer rod is connected to the corresponding aluminum alloy rod through a universal ball joint support. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1 It is a top view of a preferred embodiment of the grid structure on the chord-supported aluminum alloy grid structure system of the present invention.

[0031] Figure 2 It is a structural schematic diagram of a preferred embodiment of the chord-supported aluminum alloy grid structure system of the present invention.

[0032] Figure 3 The schematic diagram of the structure of the upper node plate of the connection node in the chord-supported aluminum alloy grid structure system of the present invention is shown.

[0033] Figure 4 The schematic diagram of the structure of the lower node plate of the connection node in the chord-supported aluminum alloy grid structure system of the present invention is shown.

[0034] Figure 5 for Figure 3 A1-A1 cross-sectional view.

[0035] Figure 6 It is a cross-sectional view of the connection core in the chord-supported aluminum alloy grid structure system of the present invention.

[0036] Figure 7 for Figure 6 Sectional view of A2-A2.

[0037] Figure 8 It is a structural schematic diagram of the first side of the connection between the dowel bar and the cable net structure in the chord-supported aluminum alloy grid structure system of the present invention.

[0038] Fig. 9 It is a structural schematic diagram of the second side of the connection between the dowel bar and the cable net structure in the chord-supported aluminum alloy grid structure system of the present invention.

[0039] Fig.10 It is a top view of the connection between the transverse cables and the longitudinal cables in the chord-supported aluminum alloy grid structure system of the present invention.

[0040] Fig.11 The present invention is a flow chart of the construction method of the chord-supported aluminum alloy grid structure system. DETAILED DESCRIPTION

[0041] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments.

[0042] See also Figure 1The present invention provides a chord-supported aluminum alloy grid structure system and a construction method thereof. The system has a novel structure, can realize complex architectural shapes, arbitrary boundary conditions, and greatly reduce the deadweight of the structure, satisfying the lightness of spatial modeling. The chord-supported aluminum alloy grid structure system of the present invention utilizes connection nodes to form a three-bar intersection rigid aluminum alloy unit. Based on the aluminum alloy unit, any polygonal grid structure can be formed, and the side length of the polygon can also be made into any length, which can provide a maximized lighting space and ensure the daylighting rate. The grid structure is a flat structure, and the lower part is arranged on a cable net structure. The cable net structure is used to provide elastic support for the grid structure, increase the rigidity of the grid structure, and reduce its deflection. The grid structure forms a self-balancing system in the plane, and the structure has direct force transmission and large in-plane rigidity. Support columns are arranged at the edge of the grid structure to fully support the grid structure, reducing the arrangement of support columns in the internal space, avoiding light blocking, and further ensuring the daylighting rate. The chord-supported aluminum alloy grid structure system and a construction method thereof of the present invention are described below in conjunction with the accompanying drawings.

[0043] See also Figure 1 , showing a top view of a preferred embodiment of the grid structure on the chord-supported aluminum alloy grid structure system of the present invention. Figure 2 , showing a schematic structural diagram of a preferred embodiment of the chord-supported aluminum alloy grid structure system of the present invention. Figure 1 and Figure 2 , the chord-supported aluminum alloy grid structure system of the present invention is described.

[0044] like Figure 1 and Figure 2 As shown, the chord-supported aluminum alloy grid structure system 20 of the present invention includes support columns 21, a grid structure 22 and a cable net structure 23. The support columns 21 are arranged at intervals along the edge of a set area, and the set area is the layout range of the chord-supported aluminum alloy grid structure system 20; the grid structure 22 is placed on the support columns 21, and the grid structure 22 covers the set area, and a plurality of grids 221 are formed on the grid structure 22; the cable net structure 23 is arranged below the grid structure 22, and the cable net structure 23 is adapted to the grid structure 22, and the cable net structure 23 is connected to the grid structure 22.

[0045] The chord-supported aluminum alloy grid structure system 20 of the present invention is equivalent to an aluminum alloy building. The grid structure 22 and the cable net structure 23 form the top surface of the aluminum alloy building. The support columns 21 are arranged around the aluminum alloy building to support the grid structure 22 on the top. The multiple grids 221 formed inside the grid structure 22 provide lighting space for the aluminum alloy building. The grid structure 22 is combined with the cable net structure 23 to form a rigid-flexible combined structure. The rigidity of the grid structure 22 gives it high structural stability. The middle part of the grid structure 22 is elastically supported by the cable net structure 23. The cable net structure 23 can absorb the downward force of the middle part of the grid structure 22, so that the grid structure 22 forms a self-balancing system in the plane where it is located, achieving the effect of stably supporting the grid structure 22 by only setting support columns on the periphery. Furthermore, the edge shape of the grid structure 22 can be designed with any free boundary as needed, and the boundary does not need to have a strong boundary support effect and constraint conditions, so that it can adapt to the structural form of the free boundary.

[0046] In a specific embodiment of the present invention, Figure 1 and Figure 2 As shown, the grid structure 22 includes a plurality of aluminum alloy rods 222 spliced ​​and connected, and the plurality of aluminum alloy rods 222 enclose a corresponding grid 221 , and adjacent aluminum alloy rods 222 are connected via connection nodes 30 , and at least three aluminum alloy rods 222 are provided at one connection node 30 .

[0047] The grid structure 22 of the present invention is a flat plate structure, and its upper and lower surfaces are flat surfaces. The grid structure 22 is composed of a plurality of aluminum alloy rods 222. Since at least three aluminum alloy rods 222 are provided at the connection node 30, the connection node 30 can be used to splice with the aluminum alloy rods to form a grid shape of any polygon, so that the outline of the grid 221 is in an arbitrary polygonal shape, which can be a hexagon, a pentagon, a quadrilateral or a triangle, and can also be a special shape including an arc segment.

[0048] Furthermore, if Figures 3 to 5 As shown, the connection node 30 includes a connection core 31 provided at the connection, an upper node plate 32 provided at the top of the connection core 31, and a lower node plate 33 provided at the bottom of the connection core 31. The connection core 31 is supported between the upper node plate 32 and the lower node plate 33, and the side of the connection core 31 is provided with a wing plate 311 connected to the corresponding aluminum alloy rod 222; the upper node plate 32 is covered on the top of the corresponding aluminum alloy rod 222 and fixedly connected to the corresponding aluminum alloy rod 222; the lower node plate 33 is attached to the bottom of the corresponding aluminum alloy rod 222 and fixedly connected to the corresponding aluminum alloy rod 222. Specifically, Figure 3 The specific structure of the connection node 30 is described by taking the connection of three aluminum alloy rods 222 as an example. Figure 3The ends of the three aluminum alloy rods 222 are opposite to each other and there is a certain gap between the ends. A connecting core 31 is set at the gap, and the wing plate 311 on the connecting core 31 is attached to the corresponding aluminum alloy rod 222, and then fastened and connected by fastening bolts. In this way, the ends of the three aluminum alloy rods are connected together. The connecting core 31 is placed at the butt joint to improve the central strength of the connection node and meet the structural rigidity requirements. Then, an upper node plate 32 and a lower node plate 33 are set. The upper node plate 32 and the lower node plate 33 cover the gap at the end of the aluminum alloy rod. The upper node plate 32 and the lower node plate 33 are fastened and connected to the ends of the aluminum alloy rod 222 by fastening bolts.

[0049] Preferably, if Figure 6 and Figure 7 As shown, the interior of the connecting core 31 is hollow, and the connecting core 31 is cylindrical, and at least three wing plates 311 are provided on its side, and the wing plates 311 are fixedly connected to the outer wall of the connecting core 31, and the setting direction of the wing plates 311 is consistent with the setting direction of the corresponding aluminum alloy rod. Bolt holes are provided on the wing plates 311, so as to penetrate the fastening bolts to achieve connection with the corresponding aluminum alloy rod. Figure 6 In the example shown, three wing plates 311 are provided on the connecting core 31, and the three wing plates 311 are arranged at equal intervals along the circumference. The connecting core 31 is used to connect three aluminum alloy rods, and the three aluminum alloy rods are arranged at an angle of 120° to each other. The number and position of the wing plates 311 provided on the connecting core 31 are related to the number and arrangement direction of the aluminum alloy rods to be connected.

[0050] Preferably, the outer contour of the aluminum alloy rod 222 is square, a vertical support plate is formed inside the aluminum alloy rod 222, and the aluminum alloy rod 222 is an extruded profile. Figure 4 and Figure 5 As shown, when the wing plate is connected to the aluminum alloy rod, the wing plate 311 extends into the interior of the aluminum alloy rod 222 and abuts against the vertical support plate, and then a fastening connection is achieved by fastening bolts.

[0051] Furthermore, if Figures 3 to 5 As shown, the connection node 30 also includes a tie rod 34 arranged at the side of two adjacent aluminum alloy rods, the tie rod 34 is arc-shaped, and the side of the tie rod 34 close to the aluminum alloy rod 222 is provided with an upper tie plate 341 and a lower tie plate 342, the upper tie plate 341 and the lower tie plate 342 are both fixedly connected to the corresponding aluminum alloy rod 222, and the upper tie plate 342 is also fixedly connected to the upper node plate 32, and the lower tie plate 342 is fixedly connected to the lower node plate 33.

[0052] The tie rod 34 is used to tie and connect two adjacent aluminum alloy rods 222, and the two adjacent aluminum alloy rods 222 are arranged at a certain angle to each other. Figure 3As shown in the example, the angle between two adjacent aluminum alloy rods 222 is 120°, and the arc-shaped tie rod 34 is arranged on the outer side of the connection of the aluminum alloy rod 222. The tie rod 34 plays a role in stabilizing the aluminum alloy rod 222 and also plays a certain supporting role for the aluminum alloy rod, which can ensure that the setting position of the aluminum alloy rod is stable and will not rotate or shake relative to each other. Therefore, the length of the aluminum alloy rod 222 can be designed according to the required grid size or daylighting requirement to meet the requirements of large size and high daylighting rate, and can also ensure the structural stability of the connection node, providing support for the stability of the grid shape.

[0053] Preferably, combined Figure 3 and Figure 4 As shown, the tie rod 34 is a plate-like structure and is in an arc shape. The upper tie plate 341 and the lower tie plate 342 are vertically connected to the side of the tie rod 34. The tie rod 34 is blocked on the side of the aluminum alloy rod 222. The upper tie plate 341 and the lower tie plate 342 on the tie rod 34 are located on the side close to the aluminum alloy rod 222. The edge of the upper node plate 32 is attached to the upper tie plate 341, and then the upper node plate 32 and the upper tie plate 341 are fastened and connected by fastening bolts. The edge of the lower node plate 33 is attached to the lower tie plate 342, and then the lower node plate 33 and the lower tie plate 342 are fastened and connected by fastening bolts. Figure 3 As shown, the top surface of the upper tie plate 341 is flush with the top surface of the aluminum alloy rod 222, and the bottom surface of the lower tie plate 342 is flush with the bottom surface of the aluminum alloy rod 222. The tie rod 34 and the aluminum alloy rod 222 are fastened together by a splicing piece 37. The splicing piece 37 is an I-shaped piece, including an upper flange plate, a lower flange plate, and a web vertically connecting the upper flange plate and the lower flange plate. The aluminum alloy rod 222 is a segmented structure. Two aluminum alloy rods 222 are attached to both sides of the web of the I-shaped piece. The top and bottom of the aluminum alloy rod 222 are fastened together with the top and bottom of the splicing piece 37 by fastening bolts. The upper tie plate 341 is also fastened together with the top of the splicing piece 37 by fastening bolts, and the lower tie plate 342 is also fastened together with the bottom of the splicing piece 37 by fastening bolts. At a position away from the connection node 30 , the tie rod 34 is disposed on the side of the corresponding aluminum alloy rod 222 .

[0054] Furthermore, if Figure 3 and Figure 4As shown, the connection node 30 also includes a stiffening strut 35 supporting and connecting between the upper node plate 32 and the lower node plate 33, and the stiffening strut 35 is arranged between two adjacent aluminum alloy rods 222. Preferably, the stiffening strut 35 is arranged near the tie rod 34, and is used to support and reinforce the connection between the tie rod 34 and the upper node plate 32 and the lower node plate 33, thereby improving the structural stability and firmness of the connection node 30. The stiffening strut 35 is preferably an aluminum alloy rod, and a connecting plate is provided at the top and the bottom, and the connecting plate is fastened and connected to the corresponding upper node plate and the lower node plate by fastening bolts.

[0055] In a preferred embodiment, if Figures 3 to 5 As shown, the interior of the connecting core 31 is hollow, and a fastener 36 is inserted into the interior of the connecting core 31. The bottom of the fastener 36 is fixedly connected to the lower node plate 33, and the top of the fastener 36 passes through the upper node plate 32 and is fastened to the upper node plate 32. The fastener 36 realizes the tension connection between the upper node plate 32 and the lower node plate 33. Specifically, a first threaded connector is provided on the lower node plate 33. When installing the lower node plate 33, a fastener 36 is screwed onto the first threaded connector and the fastener 36 is inserted into the connection core 31. When installing the upper node plate 32, a through hole is provided on the upper node plate 32 corresponding to the fastener 36. A portion of the end of the fastener 36 passes through the through hole. A second threaded connector is screwed onto the end. The second threaded connector is screwed to press the second threaded connector tightly onto the upper node plate 32, thereby pulling the upper node plate 32 and the lower node plate 33 together, so that the upper node plate 32 and the lower node plate 33 can be tightly clamped onto the connection core 31. Further, the fastener 36 is a threaded rod. A positioning nut is screwed onto the upper part of the threaded rod. The positioning nut is screwed to make the position of the positioning nut flush with the top surface of the connection core 31. When the second threaded connector is tightened, the positioning nut can support and position the upper node plate 32. The provision of the fastener 36 not only increases the connection strength between the connection core 31 and the upper node plate 32 and the lower node plate 33, but also enhances the integrity between the connection core and the upper node plate and the lower node plate, ensuring that the middle portion of the connection node 30 has a stable and reliable connection performance.

[0056] In another preferred embodiment, Figure 4 As shown, the connection node 30 also includes a connection plate 38 attached to the connection of two adjacent aluminum alloy rods 222, a portion of the connection plate 38 is attached to one aluminum alloy rod 222 and is fastened by fastening bolts, and another portion of the connection plate 38 is attached to the other aluminum alloy rod 222 and is fastened by fastening bolts. The two adjacent aluminum alloy rods 222 are connected together by the connection plate 38, which further improves the stability of the connection structure.

[0057] In a specific embodiment of the present invention, Figure 2 As shown, the chord-supported aluminum alloy grid structure system of the present invention further includes a plurality of force transmission rods 24 supporting and connecting between the cable net structure 23 and the grid structure 22. Figure 5 As shown, the top of the force transmission rod 24 is connected to the grid structure 22 through a universal ball joint support 241. The bottom of the force transmission rod 24 is connected to the cable net structure 23. The force transmission rod 24 is supported between the cable net structure 23 and the grid structure 22, and the pressure of the grid structure 22 is transmitted to the cable net structure 23, and then the cable net structure shares and consumes the pressure, so that the grid structure forms a self-balancing system in the plane. The cable net structure provides elastic support for the grid structure, which can decompose the pressure of the grid structure, so that the grid structure can maintain its flatness and stability.

[0058] Preferably, the force transmission rod 24 can be connected to the lower node plate 33 of the connection node 30, and can also be connected to the aluminum alloy rod 222. A universal ball that can rotate freely is provided on the universal ball joint support. Through the free rotation of the universal ball, the force transmission rod 24 can avoid generating a rigid constraint force on the grid structure 22. When an external force is generated at the cable net structure, the free rotation adjustment of the universal ball joint support can avoid generating a rigid constraint force at the connection of the grid structure 22, thereby avoiding damage to the structure and effectively protecting the structure. The force transmission rod 24 is preferably a steel rod.

[0059] Furthermore, if Figure 2 As shown, the cable net structure 23 includes a plurality of transverse cables 231 and a plurality of longitudinal cables 232, which are arranged at intervals and whose ends are fixedly connected to the corresponding edges of the grid structure 22 after being tensioned. The transverse cables 231 and the longitudinal cables 232 are arranged in a staggered manner in a horizontal and vertical manner in a set area, and one end of the transverse cables 231 and the longitudinal cables 232 is fixedly connected to the corresponding edge of the grid structure 22, and the other end is tensioned by a through-hole jack to apply prestress, and the end is fixed to the corresponding edge of the grid structure 22 after tensioning. The transverse cables 231 and the longitudinal cables 232 are staggered in a mesh at the bottom of the grid structure 22, which plays a role of elastic support for the grid structure 22. The force transmitted by the grid structure 22 and the force transmission rod 24 can be decomposed into transverse and longitudinal forces, and then offset each other in the horizontal direction, so that the entire grid structure 22 has only vertical downward gravity and no stress in other directions, that is, a self-balancing system is formed. Therefore, it is only necessary to set support columns 21 around the periphery of the grid structure 22 for support.

[0060] Furthermore, if Figures 8 to 10 As shown, the bottom of the force transmission rod 24 is connected to the transverse cable 231 and the longitudinal cable 232. When the force transmission rod 24 is arranged, the force transmission rod 24 is arranged at the staggered connection between the transverse cable 231 and the longitudinal cable 232. Figure 1 As shown, the shape of the grid structure 22 is that the length is greater than the width, that is, the distance in the transverse direction is greater than the distance in the longitudinal direction, so the length of the transverse cable 231 is greater than the length of the longitudinal cable 232. The cable is set to meet the requirements of providing elastic support for the aluminum alloy rod at the top. The shape of the cable is an arc shape with a downward depression in the middle. In this way, the two ends of the cable are fixed on the corresponding aluminum alloy structure to form an elastic support that can support the aluminum alloy rod above. The arc of the cable has a certain proportional relationship with its length. When the length of the cable is longer, the downward depression distance of the middle part will be larger. Therefore, when the transverse cable 231 is installed alone, the transverse cable 231 will have a larger depression distance to meet the requirements of elastic support, thereby affecting the use of the space in the area below the grid structure 22. Connecting the transverse cable 231 at the connection between the force transmission rod 24 and the longitudinal cable 232 can increase the installation height of the transverse cable 231 to prevent the transverse cable 231 from occupying the lower space, and the elastic supporting force of the transverse cable 231 can be shared by the longitudinal cable 232 connected to it, that is, the transverse cable 231 and the longitudinal cable 232 are connected to form a network, which can decompose the force in the transverse and longitudinal directions, thereby achieving force balance in the horizontal direction and improving the rigidity and stability of the grid structure.

[0061] Preferably, the bottom of the force transmission rod 24 is connected with a first mounting member 244, a second mounting member 245 and a third mounting member 246, the first mounting member 244 and the second mounting member 245 clamp the longitudinal cable 232, the second mounting member 245 and the third mounting member 246 clamp the transverse cable 231, and the first mounting member 244, the second mounting member 245 and the third mounting member 246 are fastened and connected by fastening bolts. Preferably, the outer contours of the first mounting member 244, the second mounting member 245 and the third mounting member 246 are square, and grooves adapted to the cables are provided on them, and the transverse cables and the longitudinal cables are inserted into the corresponding grooves, so that tensioning can be achieved along the setting direction. Further, the bottom of the force transmission rod 24 is provided with a first connecting ear plate 242, and the first mounting member 244 is provided with a second connecting ear plate 243, and the first connecting ear plate 242 and the second connecting ear plate 243 are fastened and connected by a pin after being attached to each other.

[0062] In a specific embodiment of the present invention, Figure 1 and Figure 2As shown, a boundary beam 25 is provided at the edge of the grid structure 22. The boundary beam 25 is arc-shaped, and is placed on the corresponding support column 21 and fixedly connected to the corresponding support column 21. The boundary beam 25 is also an aluminum alloy rod, which plays the role of closing the edge of the grid structure 22. The boundary beam 25 is arc-shaped, which can improve the aesthetics of the boundary appearance. Since the chord-supported aluminum alloy grid structure system of the present invention is provided with a cable net structure and a connection node, the grid structure can form a self-balancing system in a plane. The grid structure has a large in-plane stiffness and good flatness. The structural force is vertically downward gravity, so the boundary beam 25 does not need to provide strong support. The boundary beam 25 can be changed in any shape according to the linear requirements of the design. The boundary beam 25 is fixedly connected to the corresponding aluminum alloy rod on the grid structure 22. The boundary beam 25 is also fixedly connected to the support column 21. The overall gravity of the grid structure 22 is transmitted to the support column 21 through the boundary beam 25, and then transmitted to the ground by the support column 21.

[0063] In a specific embodiment of the present invention, Figure 1 and Figure 2 As shown, the chord-supported aluminum alloy grid structure system 20 of the present invention also includes an inner support tube 26 that is arranged in a set area and supports and connects the grid structure 22. The inner support tube 26 includes a plurality of pillars and a crossbar connecting the pillars. An inner side beam 27 is provided at the top of the inner support tube 26, and the inner side beam 27 is butt-connected with the corresponding aluminum alloy rod on the grid structure 22, and can be connected through a connection node 30. The cable arranged at the position corresponding to the inner support tube 26 is disconnected at the inner support tube 26, and the end of the cable is connected to the edge of the inner support tube 26 and the corresponding grid structure 22. The arrangement of the inner support tube 26 can provide a certain support effect on the grid structure 22, but the grid structure 22 can also meet the structural stability without an inner support tube. The arrangement of the inner support tube 26 mainly provides a space division function inside the design area.

[0064] The chord-supported aluminum alloy grid structure system of the present invention can provide lighting space to the maximum extent, and is particularly suitable for buildings with high lighting requirements such as greenhouse gardens and airport terminals. The chord-supported aluminum alloy grid structure system of the present invention adopts an aluminum alloy structure, which has the characteristics of light weight, high strength and corrosion resistance. Aluminum alloy structure has an inherent material advantage over steel structure. Under the same strength, the weight of aluminum alloy is only 1 / 3 of that of steel, and a tensioned chord-supported grid form is adopted to meet the needs of large-span spaces in buildings. The tie rods are made of aluminum alloy material, which has excellent corrosion resistance, lifelong maintenance-free, and reduces the later operating costs. The chord-supported aluminum alloy grid system can reduce the number of rods, increase the area and number of skylights, strengthen the node structure, and increase the node stiffness. This system is particularly suitable for large greenhouses. The relative humidity inside the greenhouse garden is high, and there are high requirements for the corrosion and rust prevention of the structure. In addition, the greenhouse garden has high requirements for daylighting, and a large area of ​​skylights needs to be arranged. This system meets the requirements of light weight, high strength and safety, and can form a natural and elegant cloud-like curve, expressing a light and active architectural language. The overall structural node structure is simple and the construction is convenient. It meets the needs of actual engineering use, conforms to the concept of green buildings, and meets the market demand for large span, high performance, lightweight and prefabricated structures. It can enrich the design selection of spatial structures and adapt to different boundary conditions.

[0065] The present invention also provides a construction method for a chord-supported aluminum alloy grid structure system, and the construction method is described below.

[0066] like Fig.11 As shown, the construction method of the chord-supported aluminum alloy grid structure system of the present invention comprises the following steps:

[0067] Execute step S11, provide support columns, and erect the support columns at intervals along the edge of the set area of ​​the chord-supported aluminum alloy grid structure system; then execute step S12;

[0068] Execute step S12, provide aluminum alloy rods, and use the aluminum alloy rods to assemble on the top of the support column to form a grid structure covering the set area, and a plurality of grids are formed on the assembled grid structure; then execute step S13;

[0069] Execute step S13, provide cables, install the cables below the grid structure, and form a cable net structure that matches the grid structure through the cables.

[0070] During construction, if Figure 1 and Figure 2 As shown, a temporary support frame can be set up in a set area to support the aluminum alloy rods to complete the assembly of the aluminum alloy rods. After the assembly of the grid structure and the installation of the cable net structure are completed, the temporary support frame will be removed.

[0071] In a specific embodiment of the present invention, Figures 3 to 5 As shown, when assembling the aluminum alloy rods 222, the ends of at least three aluminum alloy rods 222 are butted together, a connecting core 31 is arranged at the butt joint, and the connecting core 31 is connected to the corresponding aluminum alloy rods 222;

[0072] An upper node plate 32 and a lower node plate 33 are provided, and the upper node plate 32 and the lower node plate 33 are arranged at the top and the bottom of the connecting core 31 , and the upper node plate 32 is fixedly connected to the corresponding aluminum alloy rod 222 , and the lower node plate 33 is fixedly connected to the corresponding aluminum alloy rod 222 .

[0073] The upper node plate and the lower node plate are used to cover the connection ends of the aluminum alloy rods 222 to prevent the gaps at the connection ends from being exposed.

[0074] In a specific embodiment of the present invention, it also includes:

[0075] like Figures 3 to 5 As shown, a tie rod 34 is provided, and the tie rod 34 is arranged on the side of the joint between two adjacent aluminum alloy rods 222, and the tie rod 34 is fixedly connected to the corresponding aluminum alloy rod 222, and the tie rod 34 is fixedly connected to the corresponding upper node plate 32 and lower node plate 33.

[0076] The tie rod 34 is in an arc shape, and an upper tie plate 341 and a lower tie plate 342 are provided on the side of the tie rod 34. Figure 3 and Figure 4 As shown, the upper tie plate 341 is fastened to the upper node plate 32 by fastening bolts, and the lower tie plate 342 is fastened to the lower node plate 33 by fastening bolts. The upper tie plate 341 and the lower tie plate 342 are connected to the corresponding aluminum alloy rod 222 by splicing pieces 37.

[0077] In a specific embodiment of the present invention, it also includes:

[0078] like Figure 5 As shown, a fastener 36 is provided, and the fastener 36 is inserted into the interior of the connection core 31, the bottom of the fastener 36 is fixedly connected to the lower node plate 33, and the top of the fastener 36 passes through the upper node plate 32 and is fastened to the upper node plate 32. The fastener 36 realizes the tension connection between the upper node plate 32 and the lower node plate 33, so that the upper node plate 32 and the lower node plate 33 are tightly reinforced on the connection core 31.

[0079] In a specific embodiment of the present invention, Figure 5 As shown, when installing the cable, a force transmission rod 24 is provided, and the force transmission rod 24 is supported and connected between the cable and the corresponding aluminum alloy rod 222, and the top of the force transmission rod 24 is connected to the corresponding aluminum alloy rod through a universal ball joint support 241.

[0080] Preferably, the force transmission rod 24 may be connected to the lower node plate 33 of the connection node 30 , or may be directly connected to the bottom of the aluminum alloy rod 22 .

[0081] Preferably, the cables include transverse cables 231 and longitudinal cables 232 , and the transverse cables 231 and longitudinal cables 232 are arranged alternately. The bottom of the force transmission rod 24 is connected to the corresponding transverse cables 231 and longitudinal cables 232 .

[0082] The present invention is described in detail above in conjunction with the embodiments of the accompanying drawings. A person skilled in the art can make various variations of the present invention according to the above description. Therefore, certain details in the embodiments should not constitute a limitation of the present invention, and the scope of protection of the present invention shall be defined by the scope of the attached claims.

Claims

1. A chord-supported aluminum alloy grid structure system, characterized in that: include: Support columns are arranged at intervals along the edges of the set area; A grid structure placed on the support column and covering the set area, wherein a plurality of grids are formed on the grid structure; as well as A cable net structure provided below the grid structure and adapted to the grid structure, the cable net structure being connected to the grid structure; The grid structure includes a plurality of aluminum alloy rods connected by splicing, wherein the plurality of aluminum alloy rods enclose a corresponding grid, and adjacent aluminum alloy rods are connected by connecting nodes, and at least three aluminum alloy rods are arranged at one connecting node; The connection node comprises a connection core provided at a connection, an upper node plate provided at a top of the connection core, and a lower node plate provided at a bottom of the connection core; The connecting core is supported between the upper node plate and the lower node plate, and the side of the connecting core is provided with a wing plate connected to the corresponding aluminum alloy rod; The upper node plate cover is arranged on the top of the corresponding aluminum alloy rod and is fixedly connected to the corresponding aluminum alloy rod; The lower node plate is attached to the bottom of the corresponding aluminum alloy rod and is fixedly connected to the corresponding aluminum alloy rod; The connection node further comprises a tie rod disposed at the side of two adjacent aluminum alloy rods, the tie rod is arc-shaped, and an upper tie plate and a lower tie plate are disposed on the side of the tie rod close to the aluminum alloy rod; The upper tie plate and the lower tie plate are both fixedly connected to the corresponding aluminum alloy rods, and the upper tie plate is also fixedly connected to the upper node plate, and the lower tie plate is fixedly connected to the lower node plate; The connection node also includes a stiffening brace supported and connected between the upper node plate and the lower node plate, the stiffening brace is arranged between two adjacent aluminum alloy rods, and the stiffening brace is arranged at a position close to the tie rod; The interior of the connecting core is hollow, and a fastener is inserted into the interior of the connecting core. The bottom of the fastener is fixedly connected to the lower node plate, and the top of the fastener passes through the upper node plate and is fastened to the upper node plate. The cable net structure includes a plurality of transverse cables and a plurality of longitudinal cables, which are arranged at intervals and whose ends are fixedly connected to the corresponding edges of the grid structure after being tensioned. The transverse cables and the longitudinal cables are staggered in a net shape and arranged at the bottom of the grid structure.

2. The chord-supported aluminum alloy grid structure system according to claim 1, characterized in that: It also includes a plurality of force transmission rods which are supported and connected between the cable net structure and the grid structure, and the tops of the force transmission rods are connected to the grid structure via universal ball joint supports.

3. A construction method of the chord-supported aluminum alloy grid structure system according to claim 1, characterized in that: The steps include: Providing support columns, which are erected at intervals along the edges of the set area of ​​the chord-supported aluminum alloy grid structure system; Providing aluminum alloy rods, and assembling the aluminum alloy rods on the top of the support column to form a grid structure covering the set area, wherein a plurality of grids are formed on the assembled grid structure; Providing cables, installing the cables below the grid structure, and forming a cable net structure that matches the grid structure through the cables; Butt-join the ends of at least three aluminum alloy rods, arrange a connecting core at the butt joint, and connect the connecting core to the corresponding aluminum alloy rods; Providing an upper node plate and a lower node plate, arranging the upper node plate and the lower node plate at the top and the bottom of the connection core, and fixing the upper node plate to the corresponding aluminum alloy rod and fixing the lower node plate to the corresponding aluminum alloy rod; Also includes: Providing a tie rod, arranging the tie rod at the side of the joint between two adjacent aluminum alloy rods, fixing the tie rod to the corresponding aluminum alloy rod, and fixing the tie rod to the corresponding upper node plate and lower node plate; Also includes: Providing a fastener, inserting the fastener into the interior of the connecting core, fixing the bottom of the fastener to the lower node plate, and inserting the top of the fastener through the upper node plate and fixing it to the upper node plate; The connection node also includes a stiffening brace supported and connected between the upper node plate and the lower node plate, the stiffening brace is arranged between two adjacent aluminum alloy rods, and the stiffening brace is arranged at a position close to the tie rod; The cable net structure includes a plurality of transverse cables and a plurality of longitudinal cables, which are arranged at intervals and whose ends are fixedly connected to the corresponding edges of the grid structure after being tensioned. The transverse cables and the longitudinal cables are staggered in a net shape and arranged at the bottom of the grid structure.

4. The construction method of the chord-supported aluminum alloy grid structure system according to claim 3, characterized in that: When installing the cable, a force transmission rod is provided, and the force transmission rod is supported and connected between the cable and the corresponding aluminum alloy rod, and the top of the force transmission rod is connected to the corresponding aluminum alloy rod through a universal ball joint support.

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