Large-span curtain wall structure

Abstract

The utility model discloses a large-span curtain wall structure, and belongs to the technical field of building curtain walls. The large-span curtain wall structure comprises a main supporting frame, curtain wall panels, elastic connecting nodes and auxiliary torsion-resistant assemblies. The main supporting frame is formed by connecting a plurality of transverse truss units and longitudinal truss units, and the cross section of each transverse truss unit is in an inverted trapezoid shape. The elastic connecting joint is arranged between the curtain wall panel and the main supporting frame and comprises an upper belleville spring set, a lower belleville spring set and a spherical hinge joint, and the spherical hinge joint is located between the two belleville spring sets. The auxiliary anti-torsion assembly is composed of X-shaped crossed supporting rods which are arranged at intervals in the longitudinal direction, and the ends of the X-shaped crossed supporting rods are connected with the main supporting frame through universal joints. The anti-seismic performance and the deformation adapting capacity of the curtain wall structure are improved through combination of the supporting frame, the elastic connecting joints and the auxiliary anti-torque assemblies.

Description

TECHNICAL FIELD

[0001] The utility model belongs to building curtain wall technical field, concretely relates to a large -span curtain wall structure. BACKGROUND

[0002] With the development of modern building technology, more and more large-span buildings, such as stadiums, exhibition halls, airport terminals, etc. The curtain wall structure of these places needs to have higher stability and carrying capacity to deal with the structural deformation and load effect brought by large span. There are some problems in the application of traditional curtain wall structure in large span: on the one hand, the rigidity of the supporting frame is insufficient, and it is easy to deform under the action of wind load and earthquake, which affects the stability and safety of the curtain wall; on the other hand, the connecting node between the curtain wall panel and the supporting frame lacks elasticity, and cannot effectively absorb and buffer the deformation energy caused by external load, resulting in stress concentration at the connecting part and easy damage. In addition, there are higher requirements for the torsional performance of large-span curtain wall, otherwise under the action of torque, the whole curtain wall system may be twisted and deformed, endangering the overall safety of the building. Therefore, a curtain wall structure specially for large-span buildings is needed to improve its connection stability, seismic performance and torsional performance. SUMMARY

[0003] To solve the above-mentioned problems, the utility model discloses a large-span curtain wall structure, which improves the seismic performance and deformation adaptability of the curtain wall structure through the supporting frame, elastic connecting node and auxiliary torsion-resistant component.

[0004] To achieve the above purpose, the specific technical scheme of the present application is as follows:

[0005] A large-span curtain wall structure, comprising a main supporting frame, a curtain wall panel, an elastic connecting node and an auxiliary torsion-resistant component;

[0006] The main supporting frame is composed of a plurality of transverse truss units and longitudinal truss units, and the cross section of the transverse truss unit is inverted trapezoidal;

[0007] The elastic connecting node is arranged between the curtain wall panel and the main supporting frame, and comprises two groups of disc springs and a spherical hinge joint, and the spherical hinge joint is located between the two groups of disc springs;

[0008] The auxiliary torsion-resistant component is composed of X-shaped cross struts arranged along the longitudinal direction, and the end of the X-shaped cross strut is connected with the main supporting frame through a universal joint.

[0009] Based on the above technical features, further, the top surface of the transverse truss unit is provided with a reinforcing rib plate, and the surface of the rib plate is provided with a weight-reducing hole and filled with a damping adhesive layer.

[0010] Based on the above technical features, further, the disc spring group of the elastic connecting node adopts a variable stiffness superposition structure with the outer layer spring stiffness being greater than the inner layer spring, and the center of the inner layer spring is provided with a limiting guide rod.

[0011] Based on the above technical features, further, the middle section of the X-shaped cross brace is provided with a telescopic compensator, the inner cavity of the compensator is filled with viscous fluid, and both ends are provided with a piston damper.

[0012] Based on the above technical features, further, the four corners of the curtain wall panel are provided with embedded connecting pieces, the embedded connecting pieces are fixedly connected with the elastic connecting node through bolts, and waterproof sealing pads are arranged between the embedded connecting pieces and the curtain wall panel.

[0013] Based on the above technical features, further, the end of the X-shaped cross brace of the auxiliary anti-torsion assembly is provided with a reinforcing connecting plate at the connection with the main support frame, and the reinforcing connecting plate is fixedly connected with the main support frame through high-strength bolts.

[0014] Compared with the prior art, the beneficial effects of the present application are:

[0015] The present application sets the inverted trapezoidal cross-section transverse truss unit, improves the local stiffness and carrying capacity of the main support frame, can effectively resist horizontal load and vertical load, reduces the bending deformation of the frame under large span conditions; in addition, the reinforcing rib plate design on the top surface of the transverse truss unit increases the bending strength and stiffness of the transverse truss unit, the setting of the lightening hole reduces the self weight of the structure, and the filled damping rubber layer can effectively consume vibration energy and reduce the vibration response of the structure;

[0016] The disc spring group with variable stiffness superposition structure makes the connecting node have good elasticity and nonlinear mechanical properties, can provide appropriate stiffness and damping under different load conditions, effectively absorbs the deformation energy caused by external load, reduces the stress transmission between the curtain wall panel and the main support frame, and reduces the damage risk of the connecting part;

[0017] The auxiliary anti-torsion assembly adopts an X-shaped cross brace connected with the main support frame through a universal joint, which can effectively enhance the overall torsional performance of the main support frame and prevent the curtain wall system from being twisted and deformed under the action of torque. At the same time, the telescopic compensator and the piston damper in the middle section of the X-shaped cross brace can produce certain telescopic deformation and damping energy dissipation when the brace is stressed, further improving the seismic performance and deformation adaptability of the curtain wall structure. BRIEF DESCRIPTION OF DRAWINGS

[0018] Figure 1 It is a structural schematic view of a large-span curtain wall structure of the utility model;

[0019] Figure 2It is the structure schematic view of the transverse truss unit in the utility model;

[0020] Figure 3 It is the structure schematic view of the elastic connecting node in the utility model;

[0021] The list of figure mark is as follows:

[0022] 1, support frame;11, transverse truss unit;111, reinforcing rib plate;112, lightening hole;113, damping adhesive layer;12, longitudinal truss unit;2, curtain wall panel;21, pre-buried connecting piece;3, elastic connecting node;31, disc spring group;311, outer spring;312, inner spring;313, limiting guide rod;4, auxiliary anti-torsion assembly;41, X-shaped cross brace;42, universal joint;43, reinforcing connecting plate;44, high-strength bolt. Specific implementation

[0023] The present application is further illustrated below in conjunction with the drawings and specific embodiments, and it should be understood that the following specific embodiments are only used to illustrate the present application and are not used to limit the scope of the present application.

[0024] It should be noted that the words "upper", "lower", "left", "right", "front" and "back" used in the following description refer to the directions in the drawings, and the words "inner" and "outer" refer to the directions towards or away from the geometric center of a particular component. In addition, the terms "mount", "connect", and "connect" should be broadly understood, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected;It can be mechanically connected, or it can be electrically connected;It can be directly connected, or it can be indirectly connected through an intermediate medium, or it can be connected inside two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0025] As Figure 1 shown, a large-span curtain wall structure, including including main support frame 1, curtain wall panel 2, elastic connecting node 3 and auxiliary anti-torsion assembly 4;

[0026] The main support frame 1 is composed of a plurality of transverse truss units 11 and longitudinal truss units 12, and the cross section of the transverse truss unit 11 is inverted trapezoidal. The inverted trapezoidal angle section is wide at the top and narrow at the bottom, which moves the neutral axis in the section. Under the same amount of steel, the bending capacity is increased by 18-22% compared with the rectangular section. The transverse truss unit 11 and the longitudinal truss unit 12 are connected by embedded node plate.

[0027] The elastic connection node 3 is arranged between the curtain wall panel 2 and the main support frame 1, and comprises two groups of disc spring groups 31 and a spherical hinge 32, wherein the spherical hinge 32 is located between the two groups of disc spring groups 31; the two groups of disc spring groups 31 can provide elasticity in the vertical direction, and the spherical hinge 32 allows the curtain wall panel to rotate or tilt within a certain range to adapt to the deformation requirement of the building structure under the action of external forces such as wind load and earthquake. This design helps to reduce stress concentration and improve the overall stability and durability of the curtain wall system.

[0028] The auxiliary anti-torsion assembly 4 is composed of X-shaped cross struts 41 arranged at intervals in the longitudinal direction, and the ends of the X-shaped cross struts 41 are connected with the main support frame 1 through universal joints 42.

[0029] The top surface of the transverse truss unit 11 is provided with a reinforcing rib plate 111, and the surface of the rib plate is provided with weight-reducing holes 112 and filled with a damping glue layer 113.

[0030] The disc spring group 31 of the elastic connection node 3 adopts a variable stiffness superposition structure with the outer spring 311 having a greater stiffness than the inner spring 312, and the center of the inner spring 312 is provided with a limiting guide rod 313.

[0031] The middle section of the X-shaped cross strut 41 is provided with a telescopic compensator 411, the inner cavity of the compensator is filled with viscous fluid 412, and the two ends are provided with piston dampers 413.

[0032] The four corners of the curtain wall panel 2 are provided with pre-buried connecting pieces 21, the pre-buried connecting pieces 21 are fixedly connected with the elastic connection node 3 through bolts, and waterproof sealing pads are arranged between the pre-buried connecting pieces 21 and the curtain wall panel 2.

[0033] The ends of the X-shaped cross struts 41 of the auxiliary anti-torsion assembly 4 are provided with reinforcing connecting plates 43 at the connection with the main support frame 1, and the reinforcing connecting plates 43 are fixedly connected with the main support frame 1 through high-strength bolts 44.

[0034] It should be noted that the drawings only illustrate the technical idea of the present application, and cannot limit the protection scope of the present application. For ordinary skilled in the art, without departing from the principles of the present application, a number of improvements and refinements can be made, which fall within the protection scope of the claims of the present application.

Claims

1. A large-span curtain wall structure, characterized in that: The curtain wall comprises a main support frame (1), curtain wall panels (2), elastic connection nodes (3) and auxiliary anti-torsion components (4); The main support frame (1) is composed of a plurality of transverse truss units (11) and longitudinal truss units (12), and the cross section of the transverse truss unit (11) is inverted trapezoidal; The elastic connection node (3) is arranged between the curtain wall panel (2) and the main support frame (1), and comprises two groups of disc spring groups (31) and a spherical hinge joint (32), and the spherical hinge joint (32) is located between the two groups of disc spring groups (31); The auxiliary anti-torsion component (4) is composed of X-shaped cross struts (41) arranged along the longitudinal direction, and the end of the X-shaped cross strut (41) is connected with the main support frame (1) through a universal joint (42).

2. The large-span curtain wall structure according to claim 1, characterized in that: The top surface of the transverse truss unit (11) is provided with a reinforcing rib plate (111), and the surface of the rib plate is provided with a weight-reducing hole (112) and filled with a damping adhesive layer (113).

3. The large-span curtain wall structure according to claim 1, characterized in that: The disc spring group (31) of the elastic connection node (3) adopts a variable stiffness superposition structure with the outer spring (311) having a greater stiffness than the inner spring (312), and the center of the inner spring (312) is provided with a limiting guide rod (313).

4. The large-span curtain wall structure according to claim 1, characterized in that: The middle section of the X-shaped cross strut (41) is provided with a telescopic compensator (411), the inner cavity of the compensator is filled with viscous fluid (412), and both ends are provided with a piston type damper (413).

5. The large-span curtain wall structure according to claim 1, characterized in that: The four corners of the curtain wall panel (2) are provided with pre-buried connecting pieces (21), the pre-buried connecting pieces are fixedly connected with the elastic connection nodes (3) through bolts, and waterproof sealing pads are arranged between the pre-buried connecting pieces (21) and the curtain wall panel (2).

6. The large-span curtain wall structure according to claim 1, characterized in that: The end of the X-shaped cross strut (41) of the auxiliary anti-torsion component (4) is provided with a reinforcing connecting plate (43) at the connection with the main support frame (1), and the reinforcing connecting plate (43) is fixedly connected with the main support frame (1) through high-strength bolts (44).

Images