Cantilever steel skeleton structure of building outer side curtain wall

Abstract

The utility model discloses a building outer side curtain wall overhanging steel skeleton structure which comprises steel rib stand columns, steel rib transverse rods, load-bearing supporting brackets and supporting steel V frames, the steel rib stand columns and the steel rib transverse rods are connected in a crisscross mode and assembled into a grid structure, and the grid structure is connected with a main body structure through the load-bearing supporting brackets and the supporting steel V frames. One ends of the bearing supporting brackets are fixed to the steel rib transverse rod, the other ends of the bearing supporting brackets are connected with embedded anchors in a main body structure, the supporting steel V-shaped frame is arranged between the two layers of bearing supporting brackets, two supporting arms of the supporting steel V-shaped frame are located on the same horizontal plane, and the converging ends of the two supporting arms are fixed to the steel rib transverse rod. And the divergent ends of the two are connected with an embedded anchor in the main body structure. The cantilever steel framework structure is simple in structure and ingenious in design, wall-attached installation of the steel framework structure is achieved through organic combination of the load-bearing supporting bracket and the supporting steel V-shaped frame, stress of the cantilever steel framework structure on a main body structure is more reasonable, and the cantilever steel framework structure can be widely used in building curtain wall design.

Description

Technical Field

[0001] The utility model relates to the technical field of building curtain wall construction, in particular to a cantilevered steel skeleton structure of a building outer curtain wall. Background Art

[0002] With the development of the times, the shapes and functions of buildings are becoming more and more abundant. In windy areas with sufficient sunshine, in order to maximize the energy-saving and environmental protection efficiency of buildings and improve the architectural design effect, it is necessary to set up curtain walls on the outside of the building for sunshade and heat preservation, and to play a decorative role. Conventional curtain wall structures need to be installed through cantilevered steel frames, and cantilevered steel frames need to be connected to the embedded anchors set in the main structure through load-bearing brackets. The conventional external cantilevered steel frame structure has a great influence on the stress of the main structure, especially when the cantilever load and wind load are large. In order to resist wind loads and cantilever loads, the cross-sectional size of the load-bearing bracket needs to be increased to resist vertical and horizontal loads. Moreover, the volume of the embedded anchors connected to the load-bearing brackets also needs to be increased accordingly. For this reason, the cross-sectional size of the beam needs to be increased, which will affect the effective use of the internal space of the building and increase the construction cost. Utility Model Content

[0003] The utility model aims to provide a cantilevered steel frame structure of a building outer curtain wall to solve the technical problems described in the background technology.

[0004] In order to achieve the above technical purpose, the utility model adopts the following technical solutions:

[0005] A cantilevered steel skeleton structure of an outer curtain wall of a building comprises steel columns, steel cross bars, load-bearing support brackets and supporting steel V-frames. A plurality of steel columns and steel cross bars are cross-connected vertically and horizontally and assembled into a grid structure. The grid structure is connected to a main structure through load-bearing support brackets and supporting steel V-frames. The load-bearing support brackets and supporting steel V-frames are arranged in layers in a vertical direction. One end of the load-bearing support bracket is fixed to the steel cross bar, and the other end is connected to an embedded anchor in the main structure. The supporting steel V-frame is arranged between two layers of load-bearing support brackets. Two supporting arms of the supporting steel V-frame are located on the same horizontal plane. The converging ends of the two are connected to the steel cross bar, and the diverging ends of the two are connected to the embedded anchor in the main structure.

[0006] Preferably, the angle between the two support arms of the supporting steel V-frame is between 45° and 120°.

[0007] Preferably, the converging ends of the two supporting arms of the supporting steel V-frame are hingedly connected to the steel frame crossbar through a hinge joint, and the diverging ends of the two are hingedly connected to the embedded anchor through a hinge joint, and the hinge joint can rotate in the horizontal direction.

[0008] Preferably, the grid structure is provided with expansion joints in both horizontal and vertical directions.

[0009] Preferably, the steel cross bar is disconnected at the horizontal expansion joint, and the steel cross bars on both sides of the expansion joint are provided with hollow sections, and plug-in joints are inserted into the hollow sections of the steel cross bars on both sides of the expansion joint, one end of the plug-in joint is welded and fixed to the steel cross bar on one side of the expansion joint, and the other end of the plug-in joint is inserted into the steel cross bar on the other side of the expansion joint and can slide along the steel cross bar, and connecting holes are provided at the sliding end of the plug-in joint and on the steel cross bar correspondingly, and limit bolts are inserted into the connecting holes to prevent the plug-in joint from slipping out of the steel cross bar, and the connecting holes on the steel cross bar are oblong holes extending along its length direction.

[0010] Preferably, the expansion joint of the grid structure in the vertical direction is arranged at the steel cross bar connected to the load-bearing support corbel, and a plug-in joint is welded and fixed on the steel cross bar at the expansion joint, and a hollow section is arranged at the end of the steel column above the plug-in joint. The hollow section at the end of the steel column is sleeved on the plug-in joint and can slide along the plug-in joint.

[0011] Compared with the prior art, the beneficial effects of the utility model are as follows: the utility model has a simple structure and an ingenious design, and realizes the wall installation of the steel frame structure through the organic combination of the load-bearing support bracket and the supporting steel V-frame. The load-bearing support bracket is mainly used to resist the vertical load of the cantilever frame and the auxiliary structure, and the supporting steel V-frame is mainly used to resist the horizontal wind load, and the axial force of the supporting steel V-frame support arm replaces the shear force to bear the horizontal load, which can greatly reduce the cross-sectional size of the rod, so that the force of the cantilever steel frame structure on the main structure is more reasonable, and can be widely used in the design of building curtain walls. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] The above and / or other aspects and advantages of the present invention will become clearer and easier to understand through the detailed description made in conjunction with the following drawings, which are only schematic and do not limit the present invention, wherein:

[0013] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0014] Figure 2 It is a schematic diagram of the cross-sectional structure of the load-bearing support bracket of the utility model along the horizontal direction;

[0015] Figure 3 It is a schematic diagram of the cross-sectional structure of the supporting steel V-frame of the utility model along the horizontal direction;

[0016] Figure 4 It is a structural schematic diagram of the horizontal expansion joint of the utility model;

[0017] Figure 5It is a structural schematic diagram of the vertical expansion joint of the utility model.

[0018] Figure numerals: 1. Main structure; 2. Embedded anchor; 3. Load-bearing support corbel; 4. Support steel V-frame; 5. Hinge joint; 6. Steel column; 7. Steel cross bar; 8. Plug-in joint; 9. Connection hole; 10. Limit bolt. DETAILED DESCRIPTION

[0019] Hereinafter, an embodiment of a cantilevered steel skeleton structure of a building outer curtain wall of the utility model will be described with reference to the accompanying drawings. The embodiments recorded herein are specific embodiments of the utility model, which are used to illustrate the concept of the utility model, are explanatory and exemplary, and should not be interpreted as limiting the implementation methods of the utility model and the scope of the utility model. In addition to the embodiments recorded herein, those skilled in the art can also adopt other obvious technical solutions based on the contents disclosed in the claims and the specification of this application, including technical solutions that adopt any obvious replacements and modifications to the embodiments recorded herein.

[0020] In the description of the present invention, it should be noted that the terms "front", "rear", "left", "right", "top", "bottom", "up", "down", "inside", "outside", "horizontal", "longitudinal", "vertical", "oblique" and the like indicate directions or positional relationships based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second" and the like are only used for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0021] The drawings of this specification are schematic diagrams, which assist in explaining the concept of the utility model and schematically show the shapes of various parts and their mutual relationships. Please note that in order to clearly show the structure of various components of the embodiments of the utility model, the drawings are not drawn according to the same scale. The same reference numerals are used to represent the same parts.

[0022] The principles and features of the present invention are described below in conjunction with the accompanying drawings. The embodiments are only used to explain the present invention and are not intended to limit the scope of the present invention. Figure 1-5 , the preferred embodiments of the utility model are further described in detail:

[0023] like Figure 1-3As shown, the utility model preferably adopts a cantilevered steel skeleton structure of the curtain wall on the outside of the building, including steel column 6, steel cross bar 7, load-bearing support bracket 3 and support steel V frame 4, a plurality of steel column 6 and steel cross bar 7 are cross-connected vertically and horizontally and assembled into a grid structure, the grid structure is connected to the main structure 1 through the load-bearing support bracket 3 and the support steel V frame 4, the load-bearing support bracket 3 and the support steel V frame 4 are arranged in layers in the vertical direction, one end of the load-bearing support bracket 3 is fixed on the steel cross bar 7, and the other end is connected to the embedded anchor 2 in the main structure 1, the support steel V frame 4 is arranged between two layers of load-bearing support bracket 3, and the two support arms of the support steel V frame 4 are located on the same horizontal plane, the converging end of the two is connected to the steel cross bar 7, and the diverging end of the two is connected to the embedded anchor 2 in the main structure 1;

[0024] Taking into account that the functions of each layer of the grid structure are different, the grid structure is divided into a load-bearing layer and a horizontal support layer. The load-bearing support bracket 3 is arranged on the steel cross bar 7 at the load-bearing layer, and the supporting steel V-frame 4 is arranged on the steel cross bar 7 at the horizontal support layer. For structural stability considerations, the cross-sectional size of the steel cross bar 7 at the load-bearing layer needs to be larger than the cross-sectional size of the steel cross bar 7 at the horizontal support layer. At the same time, in order to reduce the deadweight of the grid structure, the steel column 6 and the steel cross bar are preferably made of rectangular steel pipes. In order to improve the efficiency of on-site installation and construction, the grid structure is preferably assembled using unit modules. In each unit module, the steel column 6 and the steel cross bar 7 are connected as a whole by welding or bolting. Considering the structural stability and on-site construction conditions, welding is preferred. At the load-bearing layer and the horizontal support layer, the steel cross bar 7 is set through the length. The steel column 6 is disconnected at the steel cross bar 7 and is connected by a transfer segment (plug-in or socket-in form). The specific distribution of the load-bearing layer and the horizontal support layer needs to be determined according to the architectural design or functional requirements. Under normal circumstances, multiple horizontal support layers need to be set between the two load-bearing layers, and the position of the load-bearing layer is also suitable as the unit module segmentation position of the entire grid structure;

[0025] In windy areas, the horizontal component of wind load is relatively large. If the entire grid structure is connected to the main structure 1 through the load-bearing support brackets 3, the load-bearing support brackets 3 will be subjected to a large shear force. The cross-sectional size of the load-bearing support brackets 3 is required to be relatively large. In order to optimize the entire force system, the load-bearing support brackets 3 of the load-bearing layer are used to bear the vertical load, and a supporting steel V-frame 4 is set at the horizontal supporting layer to bear the horizontal load. Since the support arms of the supporting steel V-frame 4 are inclined in the horizontal direction, the shear force generated by part of the horizontal load can be converted into axial force, thereby effectively reducing its cross-sectional size. In order to better achieve this purpose, based on the on-site construction conditions, the two supports of the supporting steel V-frame 4 are The angle between the bracing arms is between 45° and 120°. When conditions permit, the angle between the two bracing arms of the supporting steel V-frame 4 can be as large as possible. At the same time, the supporting steel V-frame 4 is preferably made of round steel pipes. On this basis, in order to better absorb horizontal loads, the converging ends of the two bracing arms of the supporting steel V-frame 4 are hingedly connected to the steel cross bar 7 through a hinged joint 5, and the divergent ends of the two are hingedly connected to the embedded anchor 2 through a hinged joint 5, and the hinged joint 5 can rotate in the horizontal direction. During specific construction, the hinged ear plates of the hinged joint 5 can be welded in advance on the steel cross bar 7, the embedded anchor 2 and the supporting arms of the supporting steel V-frame 4, and the two hinged ear plates are correspondingly connected through the hinge shaft during installation;

[0026] like Figure 4-5 As shown, when the temperature difference between day and night in the area where the building is located is large, and the size of the entire grid structure is large, the deformation of the steel structure under the influence of temperature is large. The influence of temperature on the steel structure during construction needs to be considered in the design process. In order to cope with the adverse effects of the temperature effect, expansion joints need to be set in the horizontal and vertical directions of the grid structure. The steel cross bar 7 is disconnected at the horizontal expansion joint, and the tube cavity of the steel cross bars 7 on both sides of the expansion joint is penetrated by a plug-in joint 8. One end of the plug-in joint 8 is welded and fixed to the steel cross bar 7 on one side of the expansion joint, and the other end of the plug-in joint 8 is inserted into the steel cross bar 7 on the other side of the expansion joint and can slide along the steel cross bar 7. The plug-in joint 8 A connecting hole 9 is provided at the sliding end corresponding to the steel cross bar 7, and a limit bolt 10 is passed through the connecting hole 9 to prevent the plug-in joint 8 from slipping out of the steel cross bar 7, and the connecting hole 9 provided on the steel cross bar 7 is an oblong hole extending along its length direction. The expansion joint of the grid structure in the vertical direction is arranged at the steel cross bar 7 connected to the load-bearing support corbel 3 (that is, the splicing node of the two-unit module), and a plug-in joint 8 is welded and fixed on the steel cross bar 7 at the expansion joint, and a hollow section is provided at the end of the steel column 6 above the plug-in joint 8, and the hollow section at the end of the steel column 6 is sleeved on the plug-in joint 8 and can slide along the plug-in joint 8.

[0027] The utility model optimizes the installation form of the traditional cantilever steel frame structure, and realizes the wall installation of the steel frame structure through the organic combination of the load-bearing support bracket 3 and the support steel V frame 4. The load-bearing support bracket 3 is mainly used to resist the vertical load of the cantilever frame and the auxiliary structure, and the support steel V frame 4 is mainly used to resist the horizontal wind load, and the axial force of the support arm of the support steel V frame 4 replaces the shear force to bear the horizontal load, which can greatly reduce the cross-sectional size of the rod, so that the force of the cantilever steel frame structure on the main structure is more reasonable. The utility model has been actually applied in a subtropical grassland-desert climate site project and achieved ideal application effect.

[0028] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A cantilevered steel skeleton structure of a building's outer curtain wall, characterized in that: The invention comprises steel column (6), steel cross bar (7), load-bearing support bracket (3) and supporting steel V-frame (4), wherein a plurality of steel column (6) and steel cross bar (7) are cross-connected vertically and horizontally and assembled into a grid structure, wherein the grid structure is connected to the main structure (1) through the load-bearing support bracket (3) and the supporting steel V-frame (4), wherein the load-bearing support bracket (3) and the supporting steel V-frame (4) are arranged in layers in the vertical direction, wherein one end of the load-bearing support bracket (3) is fixed to the steel cross bar (7), and the other end is connected to the embedded anchor (2) in the main structure (1), wherein the supporting steel V-frame (4) is arranged between two layers of load-bearing support bracket (3), wherein two supporting arms of the supporting steel V-frame (4) are located on the same horizontal plane, wherein the converging ends of the two are connected to the steel cross bar (7), and the diverging ends of the two are connected to the embedded anchor (2) in the main structure (1).

2. The cantilevered steel skeleton structure of the building outer curtain wall according to claim 1, characterized in that: The angle between the two support arms of the support steel V frame (4) is between 45° and 120°.

3. The cantilevered steel skeleton structure of the building outer curtain wall according to claim 1 is characterized by: The converging ends of the two supporting arms of the supporting steel V-frame (4) are hingedly connected to the steel crossbar (7) via a hinge joint (5), and the diverging ends of the two are hingedly connected to the embedded anchor (2) via a hinge joint (5), and the hinge joint (5) can rotate in the horizontal direction.

4. The cantilevered steel skeleton structure of the building outer curtain wall according to claim 1 is characterized by: The grid structure is provided with expansion joints in both horizontal and vertical directions.

5. The cantilevered steel skeleton structure of the building outer curtain wall according to claim 4 is characterized in that: The steel cross bar (7) is disconnected at the expansion joint in the horizontal direction. The steel cross bars (7) on both sides of the expansion joint are provided with hollow sections. The hollow sections of the steel cross bars (7) on both sides of the expansion joint are provided with plug-in joints (8). One end of the plug-in joint (8) is welded and fixed to the steel cross bar (7) on one side of the expansion joint. The other end of the plug-in joint (8) is inserted into the steel cross bar (7) on the other side of the expansion joint and can slide along the steel cross bar (7). The sliding end of the plug-in joint (8) and the steel cross bar (7) are provided with corresponding connection holes (9). The connection holes (9) are provided with limit bolts (10) for preventing the plug-in joint (8) from slipping off the steel cross bar (7). The connection holes (9) provided on the steel cross bar (7) are oblong holes extending along the length direction thereof.

6. The cantilevered steel skeleton structure of the building outer curtain wall according to claim 4, characterized in that: The expansion joint of the grid structure in the vertical direction is arranged at a steel cross bar (7) connected to the load-bearing support bracket (3); a plug-in joint (8) is welded and fixedly arranged on the steel cross bar (7) at the expansion joint; a hollow section is arranged at the end of the steel column (6) above the plug-in joint (8); the hollow section at the end of the steel column (6) is sleeved on the plug-in joint (8) and can slide along the plug-in joint (8).

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