Sliding support damping stair structure

Abstract

The utility model discloses a sliding support shock absorption stair structure which comprises stair step plates and a stair rest platform, a steel bar supporting frame is arranged in the stair rest platform, a steel plate is welded to the top face of the steel bar supporting frame, and the top face of the steel plate is exposed out of the top face of a bridging piece on the upper portion of the stair rest platform. The bottommost pedal part of the stair tread is located over a steel plate of a stair rest platform, a polyfluortetraethylene plate is fixed to the bottom face of the bottommost pedal part, and the bottom face of the polyfluortetraethylene plate is close to or tightly attached to the top face of the steel plate. The steel plate is installed on the left portion of the top face of the bridging piece on the upper portion of the stair rest platform and makes contact with the bottom face of the polyfluortetraethylene plate on the upper portion, the friction force is small, the sliding effect is improved, and therefore the energy dissipation and shock absorption effects are improved.

Description

Technical Field:

[0001] The utility model relates to the technical field of building manufacturing, and more specifically to a sliding bearing shock-absorbing staircase structure. Background Art:

[0002] The existing staircase landing and staircase treads are rigidly connected, which results in weakened seismic performance and reduced structural comfort due to the resonance of pedestrians walking.

[0003] Therefore, the existing method is to fix a polytetrafluoroethylene plate on the bottom surface of the tread part at the bottom of the staircase tread. At the same time, the top surface of the staircase landing below it is slidably connected to the polytetrafluoroethylene plate, and the two are connected in a press-fit and separated manner. Such a structure makes the staircase landing and the staircase tread not rigidly connected. Through the polytetrafluoroethylene plate, the influence of seismic force on the staircase is effectively reduced, and it has a high energy dissipation and shock-absorbing effect. Moreover, an isolation layer is formed between the upper and lower staircase sections to reduce the resonance effect of people walking and running. However, the bottom surface of the polytetrafluoroethylene plate is in direct contact with the top surface of the staircase landing. The top surface of the staircase landing is concreted, and its smoothness is limited, which increases the friction between the bottom surface of the polytetrafluoroethylene plate and the top surface of the staircase landing. When vibrations occur, the sliding effect between the bottom surface of the polytetrafluoroethylene plate and the top surface of the staircase landing is reduced. The reduction of its sliding effect will reduce the energy dissipation and shock-absorbing effect. Content of the Utility Model:

[0004] The purpose of the utility model is to overcome the deficiencies of the prior art and provide a sliding bearing shock-absorbing staircase structure. By installing a steel plate on the left part of the top surface of the cantilever slab at the upper part of the staircase landing, it contacts the bottom surface of the upper polytetrafluoroethylene plate, with relatively small friction, improving the sliding effect, and thus enhancing its energy dissipation and shock-absorbing effect.

[0005] The solution of the utility model to solve the above technical problems is:

[0006] A sliding bearing shock-absorbing staircase structure, including a staircase tread and a staircase landing. A steel bar support frame is arranged inside the staircase landing, and a steel plate is welded on the top surface of the steel bar support frame. The top surface of the steel plate exposes the top surface of the cantilever slab at the upper part of the staircase landing;

[0007] The tread part at the bottom of the staircase tread is directly above the steel plate of the staircase landing, and a polytetrafluoroethylene plate is fixed on the bottom surface of the bottom tread part. The bottom surface of the polytetrafluoroethylene plate is close to or in contact with the top surface of the steel plate.

[0008] The steel bar support frame is composed of a plurality of support frames arranged front and back. Each support frame includes an upper rod part extending left and right. A left vertical rod part extending vertically downward is formed at the left end of the upper rod part. A bottom rod part extending horizontally to the right is formed at the bottom end of the left vertical rod part. A right vertical rod part extending vertically downward is formed at the right end of the upper rod part. The right vertical rod part is located in the middle vertical strengthening part cast at the middle of the bottom surface of the stair landing.

[0009] A plurality of vertical support rods are welded to the side walls of the upper rod part and the bottom rod part of the corresponding support frames at the front, middle, and rear. The tops of the two vertical support rods of the same support frame extend out of the upper rod part of the support frame and are welded to the same top rod extending left and right. The steel plate is welded and fixed to the top surfaces of all the top rods. It supports the steel plate through the top rod and the vertical support rods.

[0010] All the steel bar support frames, vertical support rods, and top rods are formed into a stair landing through concrete casting. The bottom surface of the steel plate is fixed to the top surface of the left part of the cantilever slab at the upper part of the stair landing or the steel plate is located in the cantilever slab at the upper part of the stair landing. Its top surface extends out of the top surface of the cantilever slab at the upper part of the stair landing or is flush with the top surface of the cantilever slab at the upper part of the stair landing.

[0011] On the top surface of the stair landing at the right side of the bottommost tread part, an upper heightening platform plate part extending to the right is cast. A left steel plate part is fixed on the left side wall of the upper heightening platform plate part. A plurality of strengthening support steel bars are welded and fixed on the right side wall of the left steel plate part. The strengthening support steel bars are located in the upper heightening platform plate part. The right side wall of the left steel plate part is fixed to the left side wall of the upper heightening platform plate part.

[0012] A right polytetrafluoroethylene plate is fixed on the right side of the bottommost tread part. The right side wall of the right polytetrafluoroethylene plate is close to or in contact with the left side wall of the left steel plate part.

[0013] The prominent effect of the present utility model is:

[0014] By installing a steel plate on the left part of the top surface of the cantilever slab at the upper part of the stair landing, it makes contact with the bottom surface of the polytetrafluoroethylene plate above. Its friction is small, improving the sliding effect, and thus improving the energy dissipation and shock absorption effect.

[0015] At the same time, due to the installation of a steel plate on the left part of the top surface of the stair landing, it corresponds to the polytetrafluoroethylene plate of the stair tread. At this time, the stair landing and the stair tread can be cast simultaneously without affecting each other, greatly reducing the time required for construction and improving construction efficiency. Description of the drawings:

[0016] Figure 1 It is the first structural schematic diagram of the present utility model;

[0017] Figure 2 is Figure 1 a partially enlarged view of;

[0018] Figure 3 is a schematic diagram of a partial structure with an auxiliary support frame added to the first structure;

[0019] Figure 4 is a schematic diagram of a partial structure of the support frame;

[0020] Figure 5 is a schematic diagram of a partial structure of the auxiliary support frame;

[0021] Figure 6 is a schematic diagram of the second structure of the present utility model. Specific embodiments:

[0022] Example 1, as shown in Figure 1 and Figure 2 shown, a sliding bearing shock-absorbing staircase structure includes a staircase tread plate 10 and a staircase landing 20. A steel bar support frame 30 is provided inside the staircase landing 20. A steel plate 40 is welded to the top surface of the steel bar support frame 30, and the top surface of the steel plate 40 exposes the top surface of the cantilever slab above the staircase landing 20;

[0023] The bottom tread portion 11 of the staircase tread plate 10 is directly above the steel plate 40 of the staircase landing 20. A polytetrafluoroethylene plate 12 is fixed to the bottom surface of the bottom tread portion 11, and the bottom surface of the polytetrafluoroethylene plate 12 is close to or in contact with the top surface of the steel plate 40.

[0024] A reinforced support steel bar frame is welded and fixed to the bottom surface of the steel plate 40, and the reinforced support steel bar frame is located in the cantilever slab above the staircase landing 20.

[0025] The steel bar support frame 30 is composed of a plurality of support frames 31 arranged front and back (as shown in Figure 4 shown). Each support frame 31 includes an upper rod portion 311 extending horizontally from left to right. A left vertical rod portion 312 extending vertically downward is formed at the left end of the upper rod portion 311. A bottom rod portion 313 extending horizontally to the right is formed at the bottom end of the left vertical rod portion 312. A right vertical rod portion 314 extending vertically downward is formed at the right end of the upper rod portion 311, and the right vertical rod portion 314 is located in a middle vertical reinforcement portion 21 cast in the middle of the bottom surface of the staircase landing 20.

[0026] The reinforcing support steel bar frame includes multiple vertical support bars 315 and multiple top bars 316. Multiple vertical support bars 315 are welded to the side walls of the upper bar parts 311 and the bottom bar parts 313 of the corresponding support frames 31 at the front, middle, and rear. The upper parts of the vertical support bars 315 are welded and fixed to the side walls of the corresponding upper bar parts 311, and the lower parts of the vertical support bars 315 are welded and fixed to the side walls of the corresponding bottom bar parts 313. The tops of two vertical support bars 315 of the same support frame 31 extend out of the upper bar part 311 of the support frame 31 and are welded to the same top bar 316 extending left and right. The steel plate 40 is welded and fixed to the top surfaces of all the top bars 316.

[0027] Multiple reinforcing bars 8 extending front and back are welded or tied to all the upper bar parts 311, and multiple reinforcing bars 8 extending front and back are also welded or tied to all the bottom bar parts 313. Diagonal pairs of the reinforcing bars 8 can be supported by wire tying, which Figure 1 and Figure 2 is not shown.

[0028] All the steel bar support frames 30, vertical support bars 315, and top bars 316 form the stair landing 20 through concrete pouring. The bottom surface of the steel plate 40 is directly fixed to the top surface of the left part of the cantilever slab above the stair landing 20 during the pouring of the stair landing 20, or the steel plate 40 is located in the cantilever slab above the stair landing 20, and its top surface extends out of the top surface of the cantilever slab above the stair landing 20 or is flush with the top surface of the stair landing 20.

[0029] This structure separates the adjacent parts of the stair tread 10 and the stair landing 20 through the steel plate 40 and the polytetrafluoroethylene plate 12 during construction, so that when the stair tread 10 is poured, the lower stair landing 20 can be poured simultaneously, greatly improving the pouring and construction efficiency.

[0030] As Figure 3 shown, it is the structure with auxiliary support frames 32 added to the stair landing 20 (as Figure 5 shown). The steel bar support frame 30 further includes multiple auxiliary support frames 32. The auxiliary support frame 32 includes an upper bar part 311 extending left and right. The left end of the upper bar part 311 is formed with a left vertical bar part 312 extending vertically downward, and the bottom end of the left vertical bar part 312 is formed with a bottom bar part 313 extending horizontally to the right. The right end of the upper bar part 311 extends to the right end of the cantilever slab above the entire stair landing 20. Multiple reinforcing bars 8 extending front and back are welded or tied to the upper bar parts 311 of all the support frames 31 and auxiliary support frames 32, and multiple reinforcing bars 8 extending front and back are also welded or tied to all the bottom bar parts 313. Diagonal pairs of the reinforcing bars 8 can be supported by wire tying, which Figure 1 andFigure 2 Not shown in the figure.

[0031] As Figure 6 As shown, on the top surface of the landing 20 at the right side of the bottommost tread portion 11, a top heightening platform plate portion 23 extending rightward is cast and formed. A left steel plate portion 1 is fixed on the left side wall of the top heightening platform plate portion 23. A plurality of reinforcing support steel bars 2 are welded and fixed on the right side wall of the left steel plate portion 1. The reinforcing support steel bars 2 are located in the top heightening platform plate portion 23 (when the top heightening platform plate portion 23 is cast, the reinforcing support steel bars 2 are cast together to achieve fixation). The right side wall of the left steel plate portion 1 is fixed on the left side wall of the top heightening platform plate portion 23 (when the top heightening platform plate portion 23 is cast, the right side wall of the left steel plate portion 1 is directly cast and fixed).

[0032] The bottom end of the left steel plate portion 1 is welded and fixed or formed together with the right side of the steel plate 40.

[0033] A right polytetrafluoroethylene plate 3 is fixed on the right side of the bottommost tread portion 11. The right side wall of the right polytetrafluoroethylene plate 3 is close to or in contact with the left side wall of the left steel plate portion 1.

[0034] Both the steel plate 40 and the left steel plate portion 1 are galvanized steel plates.

[0035] In this embodiment, by installing the steel plate 40 on the left part of the top surface of the cantilever slab at the upper part of the landing 20, making it contact with the bottom surface of the upper polytetrafluoroethylene plate 12, the friction force is greatly reduced, the sliding effect is improved, and thus the energy dissipation and shock absorption effect is improved.

Claims

1. A sliding bearing shock-absorbing staircase structure, comprising a staircase tread plate (10) and a staircase landing (20), characterized in that: A steel bar support frame (30) is provided inside the stair landing (20). A steel plate (40) is welded to the top surface of the steel bar support frame (30), and the top surface of the steel plate (40) exposes the top surface of the cantilever slab at the upper part of the stair landing (20). The bottommost tread portion (11) of the stair tread plate (10) is directly above the steel plate (40) of the stair landing (20). A polytetrafluoroethylene plate (12) is fixed to the bottom surface of the bottommost tread portion (11), and the bottom surface of the polytetrafluoroethylene plate (12) is close to or in contact with the top surface of the steel plate (40).

2. The sliding bearing shock-absorbing staircase structure according to claim 1, characterized in that: A reinforcing support steel bar frame is welded and fixed to the bottom surface of the steel plate (40), and the reinforcing support steel bar frame is located in the cantilever slab at the upper part of the stair landing (20).

3. The sliding bearing shock-absorbing staircase structure according to claim 2, characterized in that: The steel bar support frame (30) is composed of a plurality of support frames (31) arranged front to back. Each support frame (31) includes an upper rod portion (311) extending left and right. A left vertical rod portion (312) extending vertically downward is formed at the left end of the upper rod portion (311). A bottom rod portion (313) extending horizontally to the right is formed at the bottom end of the left vertical rod portion (312). A right vertical rod portion (314) extending vertically downward is formed at the right end of the upper rod portion (311), and the right vertical rod portion (314) is located in the middle vertical strengthening portion (21) formed by pouring at the middle part of the bottom surface of the stair landing (20).

4. The seismic reduction staircase structure of a sliding support according to claim 3, characterized in that: The reinforcing support steel bar frame includes a plurality of vertical support bars (315) and a plurality of top bars (316). A plurality of vertical support bars (315) are welded to the side walls of the upper rod portion (311) and the bottom rod portion (313) of the corresponding support frames (31) at the front, middle, and rear. The top ends of the two vertical support bars (315) of the same support frame (31) extend out of the upper rod portion (311) of the support frame (31) and are welded to the same top bar (316) extending left and right. The steel plate (40) is welded and fixed to the top surfaces of all the top bars (316).

5. A sliding bearing shock-absorbing staircase structure according to claim 4, characterized in that: All the steel bar support frames (30), vertical support bars (315), and top bars (316) are formed into the stair landing (20) by concrete pouring. The bottom surface of the steel plate (40) is fixed to the top surface of the cantilever slab at the upper part of the stair landing (20) or the steel plate (40) is located in the cantilever slab at the upper part of the stair landing (20), and its top surface exposes the top surface of the cantilever slab at the upper part of the stair landing (20) or is flush with the top surface of the cantilever slab at the upper part of the stair landing (20).

6. The seismic reduction staircase structure of a sliding support according to claim 3, characterized in that: The steel bar support frame (30) further includes a plurality of sub-support frames (32). The sub-support frame (32) includes an upper rod portion (311) extending left and right, and the right end of the upper rod portion (311) extends to the right end of the entire stair landing (20).

7. A sliding bearing shock-absorbing staircase structure according to claim 1, characterized in that: At the top surface of the stair landing (20) on the right side of the bottommost pedal part (11), a top heightening platform plate part (23) extending to the right is cast and formed. A left steel plate part (1) is fixed on the left side wall of the top heightening platform plate part (23). A plurality of strengthening support steel bars (2) are welded and fixed on the right side wall of the left steel plate part (1). The strengthening support steel bars (2) are located in the top heightening platform plate part (23). The right side wall of the left steel plate part (1) is fixed on the left side wall of the top heightening platform plate part (23).

8. A sliding bearing shock-absorbing staircase structure according to claim 7, characterized in that: The bottom end of the left steel plate part (1) is welded and fixed or formed together with the right side of the steel plate (40).

9. A sliding bearing shock-absorbing staircase structure according to claim 7, characterized in that: A right polytetrafluoroethylene plate (3) is fixed on the right side of the bottommost pedal part (11). The right side wall of the right polytetrafluoroethylene plate (3) is close to or in contact with the left side wall of the left steel plate part (1).

10. A sliding bearing shock-absorbing staircase structure according to claim 7, characterized in that: Both the steel plate (40) and the left steel plate part (1) are galvanized steel plates.

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