Cantilever platform at half wall of frame building

Abstract

The utility model discloses an overhanging platform at a half wall of a frame building, namely an overhanging platform which is built by utilizing or specially arranging a frame on a required wall of a certain building. The stair comprises a main body component, namely a platform which is horizontally arranged at a half-layer elevation of a wall in an overhanging manner, and stair step plates which are connected with one side of the platform and are arranged in a slope shape; the supporting system is used for supporting the main body component, the frame columns are located on the two side edges of the wall, the load-bearing torsion-resistant columns are arranged between the two frame columns, the horizontal frame beams are arranged at the positions of the upper layer and the lower layer, and the fold line type load-bearing torsion-resistant beams are connected with the platform and the top face of the stair step plate in an aligned mode at the elevation position of the half wall. The beams and the columns intersect with each other or the ends of the beams and the columns are connected to form a complete and closed frame system. By arranging the bearing torsion-resistant columns and the bearing torsion-resistant beams which are crossed with each other, the load and the internal force of the overhanging platform and the stair tread are borne and transmitted, and the structural stability and the safety are guaranteed.

Description

Technical Field

[0001] The present application relates to the technical field of building structures, and more specifically, to a cantilevered platform at a half wall of a frame building. Background Art

[0002] In some public buildings, such as exhibition halls and stations, some walls need to be built with cantilevered platforms at their mid-height position for activities (such as performances) or for storing and displaying items. At the end of one or both sides of the wall, it is necessary to build staircase steps close to the wall.

[0003] Regardless of whether the cantilever platform and the wall are built at the same time, the cantilever platform is only connected to the wall on one side. The overall force on the cantilever platform can easily lead to excessive bending moment and shear force at the connection between the cantilever platform and the wall, resulting in cracking or collapse, affecting the structural stability and safety of the cantilever platform. Utility Model Content

[0004] In order to improve the structural stability and safety of the cantilever platform, the utility model provides a cantilever platform at the half wall of a frame building, comprising a main component and a support system for supporting the main component; the main component comprises a platform arranged in a horizontal cantilevered manner and a stair tread composed of a plurality of step components, the platform is located at the half-story elevation of the wall, and the stair tread is connected to one side of the platform and arranged in a slope; the support system comprises frame columns located on both sides of the wall, a load-bearing torsion-resistant column arranged between two of the frame columns, a horizontal frame beam arranged at the upper and lower whole-story positions, and a broken-line load-bearing torsion-resistant beam whose top is connected and aligned with the top surfaces of the platform and the stair tread at the half-wall elevation, the load-bearing torsion-resistant beam and the load-bearing torsion-resistant column are cross-connected with each other, the two ends of the load-bearing torsion-resistant column are respectively connected to the horizontal frame beams arranged at the upper and lower whole-story positions, one end of the load-bearing torsion-resistant beam is connected to the frame column, and the other end is connected to the horizontal frame beam below.

[0005] Preferably, the load-bearing torsion-resistant column is arranged in the middle of the total width of the platform plus the stair treads.

[0006] Preferably, when the total width of the platform plus the stair treads is greater than the preset width or the cantilever size is greater than the preset height, the support system includes a plurality of load-bearing torsion-resistant columns, and the plurality of load-bearing torsion-resistant columns are respectively arranged at equal intervals within the range of the total width of the platform plus the stair treads, and are respectively cross-connected with the load-bearing torsion-resistant beams.

[0007] Preferably, the platform and the stair treads are made of steel, the load-bearing torsion-resistant columns and the load-bearing torsion-resistant beams are respectively composed of steel profiles, and the stair treads and the platform are respectively welded and fixed to the load-bearing torsion-resistant beams.

[0008] Preferably, the bottom of the platform is also connected to a plurality of ribs welded and fixed to the horizontal part of the load-bearing torsion beam; the step member includes a horizontal member and a vertical member, and the side of the platform is connected to the top of the top vertical member; the ribs of the platform are arranged parallel to the vertical members of the step member, and the bottom edge of the ribs is flush with the bottom edge of the load-bearing torsion beam.

[0009] Preferably, more than two ribs are provided, and a plurality of the ribs are connected to the bottom of the platform at equal intervals, and one of the ribs is located at the end of the platform away from the stair treads.

[0010] Preferably, the load-bearing torsion-resistant columns, load-bearing torsion-resistant beams, stair treads and platforms are all made of reinforced concrete, and the load-bearing torsion-resistant columns, load-bearing torsion-resistant beams, stair treads and platforms are cast in one piece.

[0011] Compared with the prior art, the utility model has the following beneficial effects: by arranging mutually intersecting load-bearing torsion-resistant columns and load-bearing torsion-resistant beams, the loads and internal forces of the cantilever platform and the stair treads are borne and transmitted, and the stability and safety of the cantilever platform structure can be guaranteed without the need for additional support columns. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 This is a schematic diagram of the structure of a cantilevered platform at a half wall of a frame building according to an embodiment of the present application;

[0013] Figure 2 This is a front view of a cantilevered platform at a half wall of a frame building in an embodiment of the present application;

[0014] Figure 3 This is a schematic diagram of a concrete structure of a cantilevered platform at a half wall of a frame building according to an embodiment of the present application;

[0015] Figure 4 It is a schematic diagram of the construction of a cantilevered platform and a wall at a half wall of a frame building in an embodiment of the present application;

[0016] Figure 5 It is a schematic diagram of the stepping components of the cantilevered platform at the half wall of the frame building of the embodiment of the present application.

[0017] Description of Reference Numerals

[0018] 1. Frame column; 2. Frame beam; 3. Load-bearing torsion-resistant column; 4. Load-bearing torsion-resistant beam; 41. Horizontal part; 42. Inclined part; 5. Platform; 51. Flat plate; 52. Rib; 6. Stair tread; 61. Tread member; 611. Horizontal member; 612. Vertical member; 7. Wall. DETAILED DESCRIPTION

[0019] In order to make the purpose, technical solution and advantages of the utility model more clear, the utility model is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the utility model and are not used to limit the utility model.

[0020] like Figure 1-5 As shown, the utility model discloses a cantilevered platform at a half wall of a frame building.

[0021] See also Figure 1 The cantilevered platform at the half wall of the frame building of this embodiment includes a main component and a support system for supporting the main component; the main component includes a horizontally cantilevered platform 5 and a stair tread 6 composed of a plurality of step components 61, and the platform 5 is located at the half-story elevation of the wall 7, that is, at about half the height of the entire wall of the building (see Figure 4 ), the stair treads 6 are connected to one side of the platform 5 and are arranged in a slope; the supporting system includes frame columns 1 located on both sides of the wall 7, load-bearing torsion-resistant columns 3 arranged between the two frame columns 1, horizontal frame beams 2 arranged at the upper and lower whole-layer positions, and a broken-line load-bearing torsion-resistant beam 4 whose top is aligned with the platform 5 and the top surface of the stair treads 6 at the half-wall elevation, the load-bearing torsion-resistant beam 4 and the load-bearing torsion-resistant columns 3 are cross-connected to each other, and both ends of the load-bearing torsion-resistant columns 3 are respectively connected to the horizontal frame beams 2 arranged at the upper and lower whole-layer positions, one end of the load-bearing torsion-resistant beam 4 is connected to the frame column 1, and the other end is connected to the horizontal frame beam 2 below.

[0022] The platform 5 includes a flat plate 51 parallel to the frame beam 2 (see Figure 2 ), one end side of the flat plate 51 is connected to the sloped stair tread 6, both the flat plate 51 and the stair tread 6 are arranged between the upper and lower frame beams 2, and are located between two adjacent frame columns 1 in the horizontal direction; the load-bearing torsion column 3 is arranged between the adjacent frame columns 1, and is located approximately in the middle of the total connection size of the flat plate 51 and the stair tread 6. The load-bearing torsion column 3 crosses the load-bearing torsion beam 4 and the upper and lower ends are respectively connected and fixed to the two frame beams 2.

[0023] The above arrangement provides a clear and reliable transmission path for the load of the platform 5 and the stair treads 6, and the entire structure can be made safe, stable and durable without the need for support columns. In addition, the platform 5 and the stair treads 6 are both cantilevered structures, which will not affect the use of the space below, thereby improving the space utilization of the building.

[0024] The above-mentioned platform 5 and stair treads 6, whether constructed simultaneously with the surrounding frame or constructed later, are made of reinforced concrete or steel structure, and their construction techniques are common and will not be described in detail.

[0025] The design process should include the use of three-dimensional building structure finite element calculation software to comprehensively verify the stiffness, strength and stability of each part in order to obtain better benefits.

[0026] In one embodiment of the utility model, when the total width of the platform 5 plus the stair treads 6 is greater than the preset width or the cantilever size is greater than the preset height, the support system includes a plurality of load-bearing torsion-resistant columns 3, and the plurality of load-bearing torsion-resistant columns 3 are respectively arranged at equal intervals within the range of the total width of the platform 5 plus the stair treads 6, and are respectively cross-connected with the load-bearing torsion-resistant beams 4; and the load-bearing torsion-resistant columns 3 are exactly arranged in the approximate middle position of the total connection size of the flat plate 51 and the stair treads 6, so that the two sections of the load-bearing torsion-resistant beams 4 on both sides of the load-bearing torsion-resistant columns 3 are subjected to approximately similar torques and shear forces, so that the force is evenly distributed.

[0027] In one embodiment of the present invention, the wall 7 originally has a concrete beam frame around it. When it is necessary to add a cantilever platform 5 later, the platform 5 and the stair treads 6 are made of steel plates (see Figure 1 ), the load-bearing torsion-resistant column 3 and the load-bearing torsion-resistant beam 4 are both composed of square steel tube profiles (specifically, connecting parts can be set on the concrete frame column 1 and the frame beam 2), and the stair treads 6 and the platform 5 are respectively welded and fixed to the load-bearing torsion-resistant beam 4. The steel structure is easy to obtain and the welding operation is simple. There is no need to destroy the structure of the building frame to achieve stable construction of the cantilever platform 5, thereby improving the construction efficiency of the cantilever platform 5.

[0028] Specifically, when the load-bearing torsion-resistant column 3 and the load-bearing torsion-resistant beam 4 are made of steel, the load-bearing torsion-resistant column 3 and the load-bearing torsion-resistant beam 4 are both made of square steel tubes, which have strong bending inertia moments and torsional inertia, excellent stiffness and strength properties, and can accommodate welds of sufficient length, thereby improving the structural deformation resistance and safety of the cantilever platform 5.

[0029] In one embodiment of the present invention, the bottom of the platform 5 has a plurality of ribs 52 for supporting the connecting plate 51, the load-bearing torsion beam 4 includes a horizontal portion 41 and an inclined portion 42, and the sides of the plate 51 and the ribs 52 are attached to the sides of the horizontal portion 41 of the load-bearing torsion beam 4 and are welded. At the inclined portion 42, the step member 61 includes a horizontal member 611 and a vertical member 612 (see Figure 5 ). The side edge of the end of the flat plate 51 is welded to the top of the top vertical member 612. The rib plate 52 is provided to improve the rigidity and strength of the platform 5, as well as the connection area with the horizontal portion 41 of the load-bearing torsion beam 4, thereby improving the connection reliability between the platform 5 and the load-bearing torsion beam 4, and further improving the overall structural safety of the cantilever platform 5. The step member 61 includes a horizontal member 611 and a vertical member 612, which are welded to each other and respectively welded to the inclined portion 42 of the load-bearing torsion beam 4, which has the same meaning.

[0030] Specifically, a plurality of ribs 52 may be provided, and steel sections such as I-beams, channel steels or angle steels may be used as appropriate. Specifically, in this embodiment, there are two ribs 52, and in other embodiments, there may be three or four ribs 52. The two ribs 52 are respectively located at the end of the platform 5 away from the stair tread 6 and the middle of the bottom of the platform 5, so as to evenly support the platform 5 and achieve uniform force on the platform 5. The ribs 52 are also welded to the horizontal portion 41 of the load-bearing torsion beam 4, so as to improve the connection stability and structural stability between the platform 5 and the wall 7.

[0031] In one embodiment of the present invention, the wall 7 is a masonry structure, and the load-bearing torsion-resistant columns 3, the load-bearing torsion-resistant beams 4, the stair treads 6 and the platform 5 are all made of reinforced concrete (see Figure 3 ), and the load-bearing torsion-resistant column 3, the load-bearing torsion-resistant beam 4, the stair treads 6 and the platform 5 are cast as one, thereby improving the connection reliability of the platform 5, the stair treads 6, the load-bearing torsion-resistant column 3 and the load-bearing torsion-resistant beam 4, and improving the structural stability and safety of the cantilever platform 5.

[0032] The above are only preferred specific implementations of the utility model, but the protection scope of the utility model is not limited thereto. Any changes or substitutions that can be easily thought of by a person skilled in the art within the technical scope disclosed in the utility model should be included in the protection scope of the utility model. Therefore, the protection scope of the utility model should be based on the protection scope of the claims.

Claims

1. A cantilevered platform at the half wall of a frame building, characterized by: The invention comprises a main component and a support system for supporting the main component; the main component comprises a platform arranged in a horizontal cantilevered manner and a stair tread composed of a plurality of step components, the platform is located at a half-story elevation of the wall, and the stair tread is connected to one side of the platform and arranged in a slope; the support system comprises frame columns located on both sides of the wall, a load-bearing torsion-resistant column arranged between two of the frame columns, a horizontal frame beam arranged at the upper and lower whole-story positions, and a broken-line load-bearing torsion-resistant beam whose top is connected and aligned with the top surfaces of the platform and the stair tread at the half-wall elevation, the load-bearing torsion-resistant beam is cross-connected with the load-bearing torsion-resistant column, both ends of the load-bearing torsion-resistant column are respectively connected to the horizontal frame beams arranged at the upper and lower whole-story positions, one end of the load-bearing torsion-resistant beam is connected to the frame column, and the other end is connected to the horizontal frame beam below.

2. The cantilevered platform at the half wall of the frame building according to claim 1, characterized in that: The load-bearing torsion-resistant column is arranged in the middle position of the total width of the platform plus the stair treads.

3. The cantilevered platform at the half wall of the frame building according to claim 1, characterized in that: When the total width of the platform plus the stair treads is greater than the preset width or the cantilever size is greater than the preset height, the support system includes a plurality of load-bearing anti-torsion columns, and the plurality of load-bearing anti-torsion columns are respectively arranged at equal intervals within the range of the total width of the platform plus the stair treads, and are respectively cross-connected with the load-bearing anti-torsion beams.

4. The cantilevered platform at the half wall of the frame building according to claim 1, characterized in that: The platform and the stair treads are made of steel, the load-bearing torsion-resistant columns and the load-bearing torsion-resistant beams are respectively composed of steel profiles, and the stair treads and the platform are respectively welded and fixed to the load-bearing torsion-resistant beams.

5. The cantilevered platform at the half wall of the frame building according to claim 4, characterized in that: The bottom of the platform is also connected to a number of ribs welded and fixed to the horizontal part of the load-bearing anti-torsion beam; the step component includes a horizontal component and a vertical component, and the side of the platform is connected to the top of the top vertical component; the ribs of the platform are arranged parallel to the vertical components of the step component, and the bottom edge of the ribs is flush with the bottom edge of the load-bearing anti-torsion beam.

6. The cantilevered platform at the half wall of the frame building according to claim 5, characterized in that: There are more than two ribs, and a plurality of the ribs are connected to the bottom of the platform at equal intervals, wherein one of the ribs is located at the end of the platform away from the stair treads.

7. The cantilevered platform at the half wall of the frame building according to claim 1, characterized in that: The load-bearing torsion-resistant columns, load-bearing torsion-resistant beams, stair treads and platforms are all made of reinforced concrete, and the load-bearing torsion-resistant columns, load-bearing torsion-resistant beams, stair treads and platforms are cast in one piece.

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