Arc-shaped facade cable net curtain wall

Abstract

The utility model relates to an arc-shaped facade cable net curtain wall. The arc-shaped facade cable net curtain wall comprises a plurality of string arch structures and a plurality of hoop beams. Wherein the string arch structure is provided with string columns which are vertically arranged and steel cables which are connected to the two ends of the string columns and are arranged in an arc shape, and the multiple string columns are located on the same arc face; each hoop beam is of an arc-shaped structure, the multiple hoop beams are arranged in parallel and perpendicularly connected with the string column, and the arc-shaped vertical faces, attached to the curtain wall, of the hoop beams are horizontally arranged; and a glass panel is mounted on the hoop beam. The structure is good in permeability and low in construction cost.

Description

TECHNICAL FIELD

[0001] The present application belongs to the technical field of cable net curtain wall, and particularly relates to an arc-shaped facade cable net curtain wall. BACKGROUND

[0002] The high facade curtain wall is widely used in modern buildings, and is mostly used in large public buildings such as airport terminal, railway station, exhibition building and high-end hotel. The high facade curtain wall support structure has a large span, and the traditional frame type curtain wall support system is relatively clumsy and difficult to achieve the visual effect of being exquisite, beautiful and transparent. The single-layer cable net system is simple and transparent, but the single-layer plane cable net structure relies on the cable to establish the plane external stiffness, and the huge pre-tension leads to the fact that the section of the support structure member around the cable net is too large or even cannot be realized.

[0003] There is a vertical self-balancing hyperboloidal cable net curtain wall support system in the prior art, which is provided with horizontal steel cables in the arc-shaped facade of the curtain wall, but the horizontal steel cables do not have bending stiffness and can only exist in the form of a straight line between the curtain wall columns. In order to reduce the size of the windproof cable invading the indoor space, a frame needs to be arranged at a short distance, and the spacing between the adjacent two curtain wall columns is too small, which will lead to a large number of indoor space members, affecting the overall transparency of the facade curtain wall. In addition, the vertical self-balancing hyperboloidal cable net curtain wall support system uses arc glass for the glass, which leads to high cost. CONTENT OF THE UTILITY MODEL

[0004] In view of the above analysis, the embodiments of the present application aim to provide an arc-shaped facade cable net curtain wall to solve the problems of poor overall transparency and high cost of the cable net curtain wall in the prior art.

[0005] The purpose of the present application is achieved in that:

[0006] The arc-shaped facade cable net curtain wall comprises a plurality of chorded bow-shaped structures and a plurality of hoop beams. The chorded bow-shaped structure has vertically arranged chorded columns and arc-shaped steel cables connected to both ends of the chorded columns, and a plurality of chorded columns are located on the same arc surface. The hoop beam is an arc structure, a plurality of hoop beams are arranged in parallel and are all connected perpendicularly to the chorded columns, and the hoop beam is arranged horizontally and is attached to the arc-shaped facade of the curtain wall. The glass panel is mounted on the hoop beam.

[0007] Further, a plurality of chorded struts are arranged between the steel cable and the chorded column, the chorded strut has a strut root and a strut end, the strut root is fixedly connected to the chorded column, and the strut end is connected to the steel cable.

[0008] Further, a plurality of chorded struts are arranged horizontally and in parallel, the chorded column, the steel cable and the chorded strut of each chorded bow-shaped structure are located in a vertical plane.

[0009] Further, the string arch strut is a flat plate structure.

[0010] Further, the rod end is connected with the steel cable through a cable clamp, a joint bearing is arranged in the cable clamp, and the steel cable passes through the joint bearing.

[0011] Further, the hoop beam is a rigid structure.

[0012] Further, the hoop beam is an arc-shaped plate structure.

[0013] Further, the hoop beam comprises spaced connection segments and midspan segments; wherein the connection of the hoop beam with the string arch column is the connection segment, and the part between two adjacent connection segments is the midspan segment; the width of the connection segment is greater than the width of the midspan segment.

[0014] Further, the string arch structure is arranged in a row at a distance of 12m-20m, the sag of the steel cable is controlled according to 1 / 8-1 / 12 of the height of the curtain wall, and the hoop beam is arranged in a row at a distance of 6-12m in the longitudinal direction; the glass panel is a flat glass, and the transverse width of the glass panel is 1.5-2m.

[0015] Further, a plurality of lifting cables are further included, the lifting cables are arranged vertically and parallel to the string arch column, and each lifting cable is connected with a plurality of hoop beams in the longitudinal direction.

[0016] Compared with the prior art, the arc-shaped facade cable net curtain wall provided by the utility model arranges a row of string arch structures vertically to bear wind pressure load at a certain distance; the hoop beam is arranged horizontally along the arc-shaped curtain wall facade to bear wind suction load by utilizing the spatial form; the hoop beam is arranged according to the form of the arc-shaped curtain wall to be able to be fitted, and the hoop beam adopts a smaller longitudinal section to form effective rigidity to resist wind suction load. The hoop beam has a certain bending stiffness, and the string arch structure can be arranged at a larger distance. The string arch column and the hoop beam form an integrated support for each other; the string arch column can provide a vertical support point for the hoop beam, and the hoop beam can effectively constrain the out-of-plane instability of the string arch column to reduce the size of the steel column section. When the distance of the hoop beam is controlled within a certain size range, the glass of a conventional size can be directly supported on the hoop beam without the need to arrange a secondary keel, the glass can adopt a panel size with a small width, the flat glass can better realize the facade effect of the arc-shaped curtain wall, and the construction cost is low. BRIEF DESCRIPTION OF DRAWINGS

[0017] In order to more clearly illustrate the technical solutions in the embodiments of the present specification or the prior art, the following will briefly introduce the drawings needed to be used in the embodiments or prior art description. Obviously, the drawings in the following description only represent some of the embodiments described in the present specification, and all other drawings obtained by those of ordinary skill in the art based on these drawings also belong to the scope of protection of the present specification.

[0018] Figure 1 The partial structure schematic diagram of the arc-shaped facade cable net curtain wall provided by the present application Figure 1 ;

[0019] Figure 2 The structure schematic diagram of the arc-shaped facade cable net curtain wall provided by the present application Figure 2 ;

[0020] Figure 3 The structure schematic diagram of the hoop beam provided by the present application

[0021] Figure 4 The partial structure schematic diagram of the arc-shaped facade cable net curtain wall provided by the present application

[0022] Figure 5 The connection structure schematic diagram of the steel cable and the cable clamp provided by the present application.

[0023] Reference signs:

[0024] 1, a string column; 2, a steel cable; 3, a hoop beam; 31, a connecting section; 32, a midspan section; 4, a sling cable; 5, a string brace; 51, a rod root; 52, a rod end; 6, a cable clamp; 7, a joint bearing; 8, a glass panel. DETAILED DESCRIPTION

[0025] In order to make the purpose, technical solutions and advantages of the embodiments of the present application more clear, the technical solutions in the embodiments of the present application will be described clearly and completely below in combination with the drawings in the embodiments of the present application. Obviously, the described embodiments are some of the embodiments of the present application, not all the embodiments. It should be noted that the embodiments and the features in the embodiments in the present application can be combined, separated, interchanged and / or rearranged without conflict. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative labor also belong to the scope of protection of the present application.

[0026] In the drawings, the size and relative size of the components can be exaggerated for clarity and / or descriptive purposes. When the exemplary embodiments can be implemented differently, the specific process sequence can be performed in different order from that described. For example, two continuously described processes can be performed substantially simultaneously or in the order opposite to that described. In addition, the same reference signs represent the same components.

[0027] The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting. As used herein, the singular forms "a," "an," and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. Furthermore, to the extent that the terms "comprising," "including," "containing," and / or "having" and variations thereof are used herein, such terms are intended to be inclusive in a manner similar to the term "comprising" as that term is interpreted when employed as a transitional term in a claim. It is also noted that the terms "substantial," "approximately," and other similar terms, as used herein, are used in their normal, ordinary sense and are not used in an absolute sense.

[0028] Embodiment 1

[0029] One specific embodiment of the present application, as shown in Figures 1 to 4 An arc-shaped facade cable net curtain wall, comprising a plurality of string arch structures and a plurality of hoop beams 3; the string arch structures are arranged at intervals, the string arch structure has a vertically arranged string column 1, a string brace 5, and a steel cable 2 connected to both ends of the string column 1 and stringing the end portions of the string brace 5 in an arc shape, the string arch structure is configured to bear wind pressure load, and a plurality of the string columns 1 are located on the same arc surface; the hoop beam 3 is an arc structure and is connected perpendicularly to the string column 1, the hoop beam 3 is arranged horizontally along the arc-shaped facade of the curtain wall and is configured to bear wind suction load by using its spatial structure form.

[0030] In this embodiment, a plurality of string braces 5 are arranged between the steel cable 2 and the string column 1, the plurality of string braces 5 are arranged horizontally and parallel to each other, and the string column 1, the steel cable 2, and the string brace 5 of each string arch structure are located in a vertical plane; by arranging the string column 1 at the corresponding position of the steel cable 2, the cable force of the steel cable 2 can be balanced.

[0031] In the embodiment, the truss string member 5 can adopt a circular rod, a square rod or other cross-sectional shape structure. Preferably, the truss string member 5 adopts a wide and flat structure, the truss string member 5 is a flat plate structure with uniform thickness, and the cross section of the truss string member 5 is variable along the length direction of the truss string member 5, that is, the cross-sectional size varies at different positions along the length direction of the truss string member 5. Specifically, the truss string member 5 has a rod root portion 51 and a rod end portion 52, the cross-sectional size of the rod root portion 51 is large, and the cross-sectional size of the rod end portion 52 is small, that is, the length of the cross section of the rod root portion is large, and the cross-sectional size of the rod root portion 51 to the rod end portion 52 gradually decreases, which can be a linearly decreasing relationship. A plurality of flat plate structure truss string members 5 are arranged horizontally and parallel, and from the perspective of the truss string member 5, the width uniformly decreases from the rod root portion 51 to the rod end portion 52. There can be a truss string member 5 at the position corresponding to the hoop beam 3, the rod root portion 51 of the truss string member 5 is smoothly connected to the side end face of the hoop beam 3 as a whole, or the rod root portion 51 of the truss string member 5 at other positions is fixedly connected to the outer wall face of the truss string column 1, the rod root portion 51 of the truss string member 5 is fixedly connected to the hoop beam 3, such as welded connection, and the rod end portion 52 of the truss string member 5 is connected to the steel cable 2. The rod root portion 51 of the conventional vertical self-balancing cable net curtain wall system is hinged to the curtain wall column, the truss rod does not have out-of-plane stiffness, and a stabilizing cable needs to be arranged to constrain the truss rod to always be in the vertical plane to prevent the truss rod from rotating out of the vertical plane. The truss string member 5 with the above structure has good out-of-plane stiffness, and a stabilizing cable does not need to be arranged, which can further improve the indoor permeable building effect.

[0032] Considering that if the steel cable 2 is directly fixedly connected to the truss string member 5 as a unified whole, uneven external load can cause local bending of the steel cable 2 and thus cause stress concentration, affecting the safety of the structure. Therefore, in one preferred embodiment, as shown in Figure 5 the rod end portion 52 of the truss string member 5 is connected to the steel cable 2 through a cable clamp 6, the cable clamp 6 is provided with a knuckle bearing 7 inside, the knuckle bearing 7 includes two semicircular balls, the inside of the semicircular ball is slotted to pass through the steel cable 2, and the two semicircular balls are connected as a whole by bolts outside to clamp the steel cable 2 inside; the cable clamp includes two clamping parts, and the inside of the cable clamp is provided with a spherical cavity matched with the spherical shape of the knuckle bearing. After the two parts of the cable clamp are connected as a whole by bolts, the knuckle bearing can be wrapped inside. Since the knuckle bearing and the cable clamp are in contact through an arc-shaped surface, the knuckle bearing can rotate freely inside, and thus better adapt to the angle change of the steel cable caused by external load, which can effectively improve the stress concentration problem caused by local bending of the steel cable 2.

[0033] The distance between the curtain wall columns of the traditional vertical self-balancing double-curved cable net curtain wall system usually needs to be controlled within 5m, and the curtain wall column density is large, which affects the permeability. In the embodiment, the distance between the string arch structures is no longer limited due to the use of the rigid hoop beam 3, so that the string arch structures can be arranged at a far distance in a bay, and the increase in the arrangement distance of the string arch structures can realize a more permeable indoor curtain wall effect. For example, one bay of string arch structures is arranged at a distance of 12m~20m, and if the distance between the two adjacent bays of string arch structures is 15m, the sagitta of the cable 2 is controlled according to 1 / 8~1 / 12 of the height of the curtain wall, the hoop beam 3 is arranged in close contact with the curtain wall facade, and one row is arranged at a longitudinal distance of 6~12m; the suspension cable 4 suspending the hoop beam 3 is arranged at a distance of 3~4m.

[0034] The glass panel of the existing vertical self-balancing cable net curtain wall system can only be supported on the curtain wall column in the horizontal direction, and the distance between the curtain wall columns determines the transverse size of the glass panel. For example, if the distance between two adjacent curtain wall columns is 5m, a glass panel with a width of 5m needs to be used. Due to the large width of the single glass panel, the entire curtain wall uses a "straight instead of curved" way to fit the arc-shaped effect, which is poor. Therefore, the existing technology needs to use arc-shaped glass, but the cost of arc-shaped glass is high. In the embodiment, one row of hoop beams 3 is arranged at a longitudinal distance of 6~12m, and this distance is the span that can be achieved by conventional glass. Therefore, the glass can be directly supported on the hoop beam 3 in the vertical direction without the need for additional secondary keel components. For example, except for the bottommost glass panel 8, the topmost glass panel 8 and the middle part glass panel 8 are directly installed on the hoop beam 3 and are supported by the hoop beam 3. The middle part glass panel 8 is installed between two adjacent hoop beams 3, the lower end of the glass panel 8 is directly placed on the upper surface of the hoop beam 3 below the glass panel, the upper end of the glass panel 8 directly abuts the lower surface of the hoop beam 3 above the glass panel, and the upper and lower ends of the glass panel 8 are sealed with the hoop beam 3. The glass panel 8 is a flat glass, the longitudinal height of the middle part glass panel 8 is equal to the distance between two adjacent hoop beams 3, the longitudinal height of the topmost glass panel 8 and the bottommost glass panel 8 is set according to actual needs, the transverse width of the glass panel 8 is 1.5~2m, and multiple spliced glass panels 8 are installed between two adjacent string columns 1. Since the transverse width of the single glass panel 8 is small, the flat glass can better fit the effect of the curved facade of the curtain wall, and the cost is lower than that of the arc-shaped glass.

[0035] In one optional embodiment, the hoop beam 3 is provided with a mounting hole, and the string column 1 passes through the mounting hole. The string column 1 can be welded with the hole wall of the mounting hole of the hoop beam 3.

[0036] In another alternative embodiment, the hoop beam comprises a plurality of arc segments, and when installed, one arc segment is welded on each of the left and right sides of the cable-stayed column 1, that is, the two ends of the same arc segment are welded with the adjacent two cable-stayed columns 1 respectively.

[0037] In one alternative embodiment, the hoop beam 3 can be applied with a certain pre-tension in a suitable manner, such as using a jack to pull the hoop beam 3 so that it has a certain pre-tension, so that the cable-stayed column 1 and the hoop beam 3 can form an integrated body that supports each other.

[0038] In this embodiment, a wide and flat hoop beam 3 is used as a member to bear wind suction force. The hoop beam 3 is rigid, for example, the hoop beam 3 is a steel structure, and the hoop beam 3 has a certain bending stiffness and can completely fit the shape of the arc-shaped curtain wall. The two ends of the hoop beam 3 are connected to the main structure in a hinged manner. The hoop beam 3 has a certain thickness in the longitudinal direction and a certain width in the plane. The hoop beam 3 can be understood as an arc-shaped plate with thickness and width, and the arc-shaped plate is connected perpendicularly to the cable-stayed column 1.

[0039] In one preferred embodiment, the width of the hoop beam 3 adopts a variable cross-section form. Specifically, the hoop beam 3 comprises spaced apart connecting segments 31 and midspan segments 32. The connecting segments 31 are located at the connection between the hoop beam 3 and the cable-stayed column 1, and the midspan segments 32 are located between adjacent connecting segments 31. The width of the connecting segment 31 is greater than that of the midspan segment 32, and the wider connecting segment 31 and the narrower midspan segment 32 are connected in a circular arc shape. The hoop beam 3 of this structure has a beautiful shape and is basically consistent with the bending moment distribution trend of the continuous beam bearing uniform load.

[0040] Preferably, the arc-shaped facade cable net curtain wall further comprises a plurality of hangers 4. The hangers 4 are arranged in several rows between the cable-stayed columns 1. The hangers 4 are arranged vertically and parallel to the cable-stayed columns 1. The hangers 4 connect a plurality of hoop beams 3 in the longitudinal direction and are configured to hang the hoop beams 3 to reduce the vertical span of the hoop beams 3.

[0041] Compared with the prior art, the arc-shaped facade cable net curtain wall provided by the embodiment has the following beneficial effects:

[0042] 1. The structure system uses a wide and flat arc-shaped hoop beam as a member to bear wind suction force. The hoop beam has a certain bending stiffness and can completely fit the shape of the arc-shaped curtain wall, so that the cable-stayed columns can be arranged at a larger spacing. Compared with the prior art, the number of cable-stayed columns can be reduced to less than 1 / 3, saving construction cost and realizing a more transparent indoor curtain wall effect.

[0043] 2. The spacing of the ring beams is controlled within the span achievable with conventional glass, allowing glass panels to be directly connected to the ring beams without the need for secondary joists. The support direction of the glass panels is adjusted to height-direction support, and the width can be narrowed as needed. Therefore, flat glass can effectively mimic the effect of a curved facade. This solves the problem of high costs associated with using curved glass in existing technologies, saving more than half the cost of the glass portion alone, significantly reducing overall costs.

[0044] 3. The tensioned column and the ring beam form an integrated structure that supports each other: The tensioned column can provide vertical support points for the ring beam, and the ring beam can effectively restrain the out-of-plane instability of the tensioned column, thereby reducing the cross-sectional size of the steel column and thus reducing the amount of steel used.

[0045] 4. The tensioned strut and the tensioned column are connected by a rigid joint. The tensioned strut adopts a wide and flat cross-section, which gives it good out-of-plane stiffness and low in-plane stiffness. The good out-of-plane stiffness will effectively constrain the out-of-plane rotation of the tensioned strut, eliminating the need to install stabilizing cables at the ends of the strut. Moreover, the low in-plane stiffness makes it easier to tension during construction and helps to eliminate the unbalanced forces of the steel cables on both sides of the tensioned strut.

[0046] 5. The cable clamp is internally fitted with a spherical bearing and welded to the end of the strut, allowing the radial bearing to rotate freely within the clamp. This connection structure effectively solves the problem of stress concentration in the cable within the clamp, a common issue in existing technologies.

[0047] 6. The number of tensioned columns in this application can be reduced to less than 1 / 3. Inexpensive ring beams are used instead of horizontal windproof cables, eliminating the need for stabilizing cables. Flat glass is used instead of expensive curved glass, which not only achieves a more transparent interior curtain wall effect, but also saves more than 60% of the overall cost of the curtain wall.

[0048] The specific embodiments described above further illustrate the purpose, technical solution, and beneficial effects of this application. It should be understood that the above description is only a specific embodiment of this application and is not intended to limit the scope of protection of this application. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the scope of protection of this application.

Claims

1. A curved fa ade cable net curtain wall, characterized in that, The tensioned arch structure has vertically arranged tensioned columns and steel cables arranged in an arc shape at both ends of the tensioned columns, and a plurality of the tensioned columns are located on the same arc surface.

2. The curved fa ade cable-net curtain wall of claim 1, wherein, A plurality of tensioned struts are arranged between the steel cables and the tensioned columns, and the tensioned struts have strut root portions and strut end portions.

3. The curved fa ade cable-net curtain wall of claim 2, wherein, The tensioned struts are horizontally and mutually parallel arranged, and the tensioned columns, the steel cables and the tensioned struts of each set of the tensioned arch structures are located in a vertical plane.

4. The curved fa ade cable-net curtain wall of claim 3, wherein, The tensioned struts are in a flat plate structure.

5. The curved fa ade cable-net curtain wall of claim 2, wherein, The strut end portions are connected with the steel cables through cable clamps, and a joint bearing is arranged in the cable clamps.

6. The curved fa ade cable-net curtain wall of claim 1, wherein, The ring hoop beams are in a rigid structure.

7. The curved fa ade cable-net curtain wall of claim 6, wherein, The ring hoop beams are in an arc plate structure.

8. The curved fa ade cable-net curtain wall of claim 7, wherein, The ring hoop beams include spaced apart connecting segments and midspan segments.

9. The curved fa ade cable-net curtain wall of claim 1, wherein, The tensioned arch structures are arranged at a spacing of 12m to 20m, the sag of the steel cables is controlled according to 1 / 8 to 1 / 12 of the height of the curtain wall, and the ring hoop beams are arranged at a spacing of 6 to 12m in the longitudinal direction. The glass panels are flat glass, and the transverse width of the glass panels is 1.5 to 2m.

10. The curved fa ade cable-net curtain wall of claim 9, wherein, A plurality of hoisting cables are vertically arranged and parallel to the tensioned columns, and each hoisting cable is connected with a plurality of the ring hoop beams in the longitudinal direction.

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