Stair sliding support
By using fasteners and a anchor assembly of the give way chamber between the stair floor slabs, the deformation and expansion problems at the stair floor slab connection over time are solved, and the seismic performance and safety of the stair structure are improved.
Patent Information
- Application Number
- CN202422326269.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-09-24
- Publication Date
- 2025-07-04
- Estimated Expiration
- 2034-09-24
AI Technical Summary
The existing stair floor connection method is prone to deformation and expansion over time, resulting in cracks at the connection, affecting the safety of the stair structure.
An anchor assembly including a fastener and a give way cavity is adopted, one end of the fastener is arranged in the first extension and the other end is placed in the cast layer through the give way cavity. The outer edge diameter of the give way cavity is larger than the outer edge diameter of the fastener, allowing relative sliding between floors to accommodate minor deformation.
It reduces structural impact and stress concentration, improves the seismic performance and safety of the building, and extends the service life of the stairs.
Smart Images
Figure CN223061808U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of staircase fixing, in particular to a staircase sliding support. Background Art
[0002] In a building, as an important part of vertical transportation, the stability and safety of a staircase are directly related to the safe evacuation of personnel and the overall service life of the building. However, due to the influence of natural factors such as temperature change and foundation settlement, the staircase structure often undergoes certain deformation. If these deformations are not effectively controlled, they will seriously affect the use function and safety of the staircase. Therefore, most staircases need to be installed with sliding supports to reinforce the staircase to ensure its safe use.
[0003] Currently, the existing connection method between the upper and lower floor staircases through a sliding support is mostly to leave holes at the ends of precast staircase slabs, insert fasteners, and use grouting material to seal for anchoring operations. This connection method can solve the problem of anchoring between the upper and lower floor staircases in a short time. However, over time, due to temperature, wind load, and its own settlement of building components, the connection between the upper and lower staircase slabs is prone to deformation and expansion, and then cracks appear, affecting the safety of the staircase structure. Content of the Utility Model
[0004] The technical problem to be solved by the utility model is that in the prior art, the connection method between the upper and lower staircase slabs is mostly bolted and sealed for anchoring. This connection method will, over time, cause the connection between the upper and lower staircase slabs to be prone to deformation and expansion, and then cracks appear, affecting the safety of the overall staircase structure.
[0005] To solve the above technical problem, the utility model provides a staircase sliding support, which includes a first floor slab, a second floor slab, and an anchoring component; the first floor slab includes a first staircase beam and a first extension part, and the first extension part is arranged at one end of the first staircase beam along the second direction; the second floor slab includes a second staircase beam and a second extension part, and the second extension part is arranged at one end of the second staircase beam along the first direction, and a walking surface is formed at the top of the first staircase beam and the second staircase beam, and the first extension part is arranged at the bottom end of the second staircase beam; the anchoring component is arranged between the second staircase beam and the second extension part for fixing the first floor slab and the second floor slab; wherein, the anchoring component includes a fastener and a yielding cavity, the yielding cavity is arranged in the second staircase beam, a pouring layer is arranged at the top end of the yielding cavity, one end of the fastener is arranged in the first extension part, and the other end passes through the yielding cavity along the first direction and is placed in the pouring layer, and the outer diameter of the outer edge of the yielding cavity is larger than the outer diameter of the fastener.
[0006] In one embodiment, a buffer joint is provided between the first stair beam and the second stair beam. The buffer joint is a cavity with an opening at the top for dispersing the loads borne by the first floor slab and the second floor slab.
[0007] In one embodiment, a decorative surface layer is provided at the top opening of the buffer joint, and the top of the decorative surface layer is flush with the walking surface.
[0008] In one embodiment, a leveling layer is provided between the second stair beam and the second extension portion. One end of the leveling layer is connected to the outer wall of the buffer joint, and a sealing layer is provided at the other end.
[0009] In one embodiment, the fastener includes an anchor head portion and a bolt. The anchor head portion is disposed within the first extension portion. One end of the bolt is connected to the anchor head portion, and the other end extends through the leveling layer into the relief cavity.
[0010] In one embodiment, the fastener further includes a fixing nut. The fixing nut is disposed within the second stair beam and is located within the casting layer. One end of the bolt is connected to the fixing nut, and the other end extends through the casting layer into the relief cavity.
[0011] In one embodiment, a gasket is provided at the bottom of the casting layer, and one end of the gasket is connected to the nut and the other end is connected to the relief cavity.
[0012] In one embodiment, the second floor slab further includes prestressed steel tendons. The prestressed steel tendons are disposed inside the second stair beam along the second direction, and the prestressed steel tendons pass through the relief cavity along the second direction.
[0013] In one embodiment, the number of the prestressed steel tendons is multiple, and the multiple prestressed steel tendons are spaced along the length direction of the second floor slab.
[0014] In one embodiment, the number of the anchoring assemblies is multiple, and the multiple anchoring assemblies are spaced along the length direction of the second floor slab.
[0015] Compared with the prior art, the beneficial effects of a stair sliding support in an embodiment of the utility model are as follows: 1) a first floor plate, the first floor plate includes a first stair beam and a first extension portion, the first extension portion is arranged at one end of the first stair beam along the second direction, and is used to provide an interface connected to the second floor plate; 2) a second floor plate, the second floor plate includes a second stair beam and a second extension portion, the second extension portion is arranged at one end of the second stair beam along the first direction, and the top ends of the first stair beam and the second stair beam together constitute a walking surface of the stairs, ensuring the safety and comfort of pedestrians; 3) an anchoring assembly, during normal use, the load borne by the stairs is transmitted to the first stair beam and the second stair beam through the walking surface, and since the outer edge diameter of the make way cavity is larger than the outer edge diameter of the fastener, the fastener can have a certain displacement space in the make way cavity, so when encountering a slight deformation of the structure caused by an earthquake, temperature change, etc., the first floor plate and the second floor plate can slide relative to each other, thereby reducing the impact and stress concentration on the overall structure, and improving the seismic resistance and safety of the building. The utility model effectively solves the problem in the prior art that the connection method between the upper and lower staircase floors is mostly closed anchoring with bolts. This connection method will cause the connection between the upper and lower staircase floors to be easily deformed and expanded over time, and then cracks will appear, affecting the safety of the overall structure of the stairs. BRIEF DESCRIPTION OF THE DRAWINGS
[0016] Figure 1 It is a schematic diagram of a staircase sliding support according to an embodiment of the utility model.
[0017] Figure 2 for Figure 1 Enlarged view of point A in the middle.
[0018] In the figure, 1, first floor slab; 11, first stair beam; 12, first extension; 2, second floor slab; 21, second stair beam; 22, second extension; 3, anchor assembly; 31, fastener; 311, anchor head; 312, bolt; 313, fixing nut; 32, clearance cavity; 33, casting layer; 331, gasket; 4, buffer joint; 41, decorative surface layer; 5, leveling layer; 51, sealing layer; 6, prestressed steel strand. DETAILED DESCRIPTION
[0019] The following is a further detailed description of the specific implementation of the present invention in conjunction with the accompanying drawings and examples. The following examples are used to illustrate the present invention, but are not intended to limit the scope of the present invention.
[0020] In the description of the present utility model, it should be understood that when an element is referred to as "fixed to" or "disposed on" another element, it can be directly on the other element or indirectly on the other element. When an element is referred to as "connected to" another element, it can be directly connected to the other element or indirectly connected to the other element. The terms "installed", "connected", and "connected to" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the internal communication of two elements or the interaction relationship between two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.
[0021] In the description of the present utility model, it should be understood that the orientation or positional relationship indicated by the terms "height", "upper", "lower", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. in the present utility model is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present utility model.
[0022] In the description of the present utility model, it should be understood that the terms "first" and "second" in the present utility model are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include one or more of such features.
[0023] Such as Figures 1 to 2As shown in the figure, the utility model preferably provides a sliding support for a staircase, which comprises a first floor slab 1, a second floor slab 2 and an anchoring assembly 3; the first floor slab 1 comprises a first staircase beam 11 and a first extension part 12, and the first extension part 12 is arranged at one end of the first staircase beam 11 along the second direction; the second floor slab 2 comprises a second staircase beam 21 and a second extension part 22, and the second extension part 22 is arranged at one end of the second staircase beam 21 along the first direction, and a walking surface is formed at the top ends of the first staircase beam 11 and the second staircase beam 21, and the first extension part 12 is arranged at the bottom end of the second staircase beam 21; the anchoring assembly 3 is arranged between the second staircase beam 21 and the second extension part 22 for fixing the first floor slab 1 and the second floor slab 2; wherein, the anchoring assembly 3 comprises a fastener 31 and a yielding cavity 32, the yielding cavity 32 is arranged in the second staircase beam 21, a casting layer 33 is arranged at the top end of the yielding cavity 32, one end of the fastener 31 is arranged in the first extension part 12, and the other end passes through the yielding cavity 32 along the first direction and is placed in the casting layer 33, and the outer diameter of the outer edge of the yielding cavity 32 is larger than the outer diameter of the outer edge of the fastener 31.
[0024] Based on the above technical features, through the setting of the first floor slab 1 of the utility model, the first floor slab 1 comprises a first staircase beam 11 and a first extension part 12, and the first extension part 12 is arranged at one end of the first staircase beam 11 along the second direction, which is used to provide an interface for connecting with the second floor slab 2; through the setting of the second floor slab 2, the second floor slab 2 comprises a second staircase beam 21 and a second extension part 22, and the second extension part 22 is arranged at one end of the second staircase beam 21 along the first direction, and the top ends of the first staircase beam 11 and the second staircase beam 21 together constitute the walking surface of the staircase, ensuring the safety and comfort of pedestrians; through the setting of the anchoring assembly 3, during normal use, the load borne by the staircase is transmitted to the first staircase beam 11 and the second staircase beam 21 through the walking surface. Since the outer diameter of the outer edge of the yielding cavity 32 is larger than the outer diameter of the outer edge of the fastener 31, the fastener 31 can have a certain displacement space in the yielding cavity 32. Therefore, when encountering small structural deformations caused by earthquakes, temperature changes, etc., the first floor slab 1 and the second floor slab 2 can slide relative to each other, thereby reducing the impact on the overall structure and stress concentration, and improving the seismic performance and safety of the building.
[0025] As some embodiments of the utility model, such as Figure 1As shown, a buffer joint 4 is provided between the first stair beam 11 and the second stair beam 21. The buffer joint 4 is a cavity with an opening at the top, which is used to disperse the load borne by the first floor 1 and the second floor 2. By setting the buffer joint 4, the buffer joint 4 is a cavity with an opening at the top. When this structure is subjected to a load along the first direction, it can absorb and disperse these loads through changes in its internal space, thereby reducing the direct impact between the first floor 1 and the second floor 2. At the same time, due to temperature changes, the first floor 1 and the second floor 2 will expand and contract due to thermal expansion and contraction. The design of the buffer joint 4 allows the first floor 1 and the second floor 2 to expand and contract when the temperature changes, thereby avoiding structural damage caused by excessive internal stress caused by temperature changes, and effectively extending the service life of the stairs.
[0026] As some embodiments of the present utility model, Figure 1 As shown, a decorative surface layer 41 is provided at the top opening of the buffer joint 4, and the top of the decorative surface layer 41 is flush with the walking surface. A decorative surface layer 41 is specially provided at the top opening of the buffer joint 4, which not only beautifies the appearance, but also ensures the flushness with the walking surface, making the entire staircase structure more visually unified and harmonious. The decorative surface layer 41 is made of the same or similar material as the stair walking surface to maintain the consistency of the overall style.
[0027] As some embodiments of the present utility model, Figure 1 As shown, a leveling layer 5 is provided between the second staircase beam 21 and the second extension 22, one end of the leveling layer 5 is connected to the outer wall of the buffer joint 4, and the other end is provided with a sealing layer 51. The main function of the leveling layer 5 is to make the connection surface between the second staircase beam 21 and the second extension 22 flat, providing a good foundation for subsequent decoration or protection. In this way, the overall flatness of the staircase walking surface can be ensured, and the comfort of users using the stairs can be improved.
[0028] As some embodiments of the present utility model, Figure 1 As shown, the fastener 31 includes an anchor head 311 and a bolt 312. The anchor head 311 is disposed in the first extension portion 12. One end of the bolt 312 is connected to the anchor head 311, and the other end passes through the leveling layer 5 and extends into the clearance cavity 32. The anchor head 311 is a key part of the fastener 31. The anchor head 311 is disposed in the first extension portion 12 and connected to the bolt 312. The function of the anchor head 311 is to firmly anchor the fastener 31 in the first extension portion 12 to ensure the stability and safety of the entire stair system.
[0029] As some embodiments of the present utility model, Figure 2As shown, the fastener 31 further includes a fixing nut 313. The fixing nut 313 is disposed within the second stair beam 21 and is located within the casting layer 33. One end of the bolt 312 is connected to the fixing nut 313, and the other end extends through the casting layer 33 into the relief cavity 32. By providing the fixing nut 313, the fixing nut 313 is arranged within the second stair beam 21 and is located within the casting layer 33. This means that during the casting process, the fixing nut 313 is embedded in concrete or other casting materials. The other end of the bolt 312 is connected to the fixing nut 313, and fastening is achieved by rotating the bolt 312. When the stair structure is subjected to loads, these loads are transmitted through the bolt 312 and the anchor head 311 to the foundation structure. Since the fixing nut 313 is firmly embedded within the casting layer 33, it can withstand the tensile force from the bolt 312, ensuring the stability and safety of the connection.
[0030] As some embodiments of the present utility model, as Figure 2 shown, a gasket 331 is provided at the bottom of the casting layer 33. One end of the gasket 331 is connected to the nut, and the other end is connected to the relief cavity 32. By providing the gasket 331, the gasket 331 can disperse the contact pressure between the nut and the bottom of the casting layer 33, preventing material damage or connection loosening caused by excessive local pressure. At the same time, in a vibrating or impact environment, the gasket 331 can absorb part of the energy, reducing the impact and damage to the fastener 31.
[0031] As some embodiments of the present utility model, as Figure 1 shown, the second floor slab 2 further includes prestressed steel tendons 6. The prestressed steel tendons 6 are arranged within the second stair beam 21 along the second direction, and the prestressed steel tendons 6 pass through the relief cavity 32 along the second direction. The prestressed steel tendons 6 generate compressive stress before the second floor slab 2 bears the load by pre-applying tensile force. This compressive stress cancels out the tensile stress generated in the second floor slab 2 under the action of the load, thereby improving the load-bearing capacity of the second floor slab 2. At the same time, due to the presence of the prestressed steel tendons 6, when the second floor slab 2 is subjected to the load, the tensile stress inside it is greatly reduced and may even become compressive stress. This helps to prevent the second floor slab 2 from cracking due to excessive tensile stress, improving the crack resistance of the second floor slab 2.
[0032] As some embodiments of the present utility model, as Figure 1 shown, the number of the prestressed steel tendons 6 is multiple, and the multiple prestressed steel tendons 6 are arranged at intervals along the first direction. The multiple prestressed steel tendons 6 are arranged at intervals along the length direction of the second floor slab 2, which can ensure that the force on the second floor slab 2 in this direction is more uniform. At the same time, the interval arrangement also helps to reduce the mutual influence between the prestressed steel tendons 6, improving the overall stability of the structure.
[0033] As some embodiments of the present utility model, asFigure 1 As shown, there are multiple anchoring assemblies 3, and multiple anchoring assemblies 3 are arranged at intervals along the length direction of the first floor 1 and the second floor 2. The anchoring assemblies 3 are arranged at intervals along the length direction of the second floor 2 so that the structure can be more evenly stressed in the length direction, avoiding damage caused by local stress concentration. The synergistic effect of multiple anchoring assemblies 3 can significantly improve the overall stability of the structure and enhance the structure's ability to resist wind and earthquakes.
[0034] In summary, the embodiment of the utility model provides a stair sliding support, which has the following beneficial effects compared with the prior art: 1) a first floor 1, the first floor 1 includes a first stair beam 11 and a first extension 12, the first extension 12 is arranged at one end of the first stair beam 11 along the second direction, and is used to provide an interface connected to the second floor 2; 2) a second floor 2, the second floor 2 includes a second stair beam 21 and a second extension 22, the second extension 22 is arranged at one end of the second stair beam 21 along the first direction, and the tops of the first stair beam 11 and the second stair beam 21 together constitute a stair. The walking surface ensures the safety and comfort of pedestrians; 3) Anchor assembly 3. During normal use, the load borne by the stairs is transmitted to the first stair beam 11 and the second stair beam 21 through the walking surface. Since the outer diameter of the clearance cavity 32 is larger than the outer diameter of the fastener 31, the fastener 31 can have a certain displacement space in the clearance cavity 32. Therefore, when encountering slight structural deformation caused by earthquakes, temperature changes, etc., the first floor slab 1 and the second floor slab 2 can slide relative to each other, thereby reducing the impact and stress concentration on the overall structure and improving the seismic performance and safety of the building. The utility model effectively solves the problem in the prior art that the connection between the upper and lower stair slabs is mostly closed anchoring with bolts. This connection method will cause the connection between the upper and lower stair slabs to be easily deformed and stretched over time, and then cracks will appear, affecting the overall structural safety of the stairs.
[0035] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and substitutions can be made without departing from the technical principle of the present invention. These improvements and substitutions should also be regarded as the protection scope of the present invention.
Claims
1. A stair sliding support, characterized in that, It includes a first floor plate, a second floor plate and an anchoring assembly; The first floor slab comprises a first staircase beam and a first extension portion, wherein the first extension portion is arranged at one end of the first staircase beam along a second direction; The second floor comprises a second staircase beam and a second extension portion, the second extension portion is arranged at one end of the second staircase beam along the first direction, and the top ends of the first staircase beam and the second staircase beam form a walking surface, and the first extension portion is arranged at the bottom end of the second staircase beam; The anchor assembly is disposed between the second staircase beam and the second extension portion for fixing the first floor slab and the second floor slab; Wherein, the anchor assembly includes a fastener and a clearance cavity, the clearance cavity is arranged in the second stair beam, a casting layer is arranged on the top of the clearance cavity, one end of the fastener is arranged in the first extension part, and the other end passes through the clearance cavity along the first direction and is placed in the casting layer, and the outer edge diameter of the clearance cavity is larger than the outer edge diameter of the fastener.
2. The sliding support for staircase according to claim 1, wherein A buffer joint is provided between the first stair beam and the second stair beam. The buffer joint is a cavity with an opening at the top for dispersing the load borne by the first floor slab and the second floor slab.
3. The sliding support for stairs according to claim 2, characterized in that, A decorative surface layer is arranged at the top opening of the buffer joint, and the top of the decorative surface layer is flush with the walking surface.
4. The sliding support for stairs according to claim 3, characterized in that, A leveling layer is arranged between the second stair beam and the second extension portion, one end of the leveling layer is connected to the outer wall of the buffer joint, and the other end of the leveling layer is arranged with a sealing layer.
5. The sliding support for staircase according to claim 4, wherein The fastener comprises an anchor head and a bolt, wherein the anchor head is arranged in the first extension portion, one end of the bolt is connected to the anchor head, and the other end of the bolt passes through the leveling layer and extends into the clearance cavity.
6. The sliding support for stairs according to claim 5, characterized in that, The fastener also includes a fixing nut, which is arranged in the second stair beam and located in the casting layer. One end of the bolt is connected to the fixing nut, and the other end passes through the casting layer and extends into the give way cavity.
7. The sliding support for stairs according to claim 6, characterized in that, A gasket is arranged at the bottom of the casting layer, and one end of the gasket is connected to the nut, and the other end of the gasket is connected to the clearance cavity.
8. The sliding support for stairs according to claim 1, characterized in that, The second floor slab further includes a prestressed steel strand, which is arranged inside the second stair beam along the second direction, and passes through the make way cavity along the second direction.
9. The sliding support for staircase according to claim 8, characterized in that, There are multiple prestressed steel strands, and the multiple prestressed steel strands are arranged at intervals along the direction of the second floor slab.
10. The sliding support for staircase according to claim 1, characterized in that, There are multiple anchoring assemblies, and the multiple anchoring assemblies are arranged at intervals along the length direction of the second floor slab.