UHPC (Ultra High Performance Concrete) assembly type folding beam stair

Abstract

The utility model discloses a UHPC (Ultra High Performance Concrete) assembly type folding beam stair which comprises an upper end plate, a lower end plate, a folding beam and stair steps, an upper end plate and a lower end plate are arranged at the two ends of each stair step respectively. Folding beams are arranged on the two sides of the stair steps, the planes of the folding beams are flush with the step faces of the stair steps, and the vertical faces of the folding beams are flush with the skirting faces of the stair steps; thickening areas are arranged on the sides, away from the stair steps, of the upper end plate and the lower end plate, and connecting reserved holes are formed in the thickening areas. The stair is light in dead weight, large in toughness, more convenient to transport and install, integrally formed at a time, free of secondary repair, capable of shortening the construction period and good in durability, construction quality is guaranteed, construction efficiency is improved, and construction cost is reduced.

Description

Technical Field

[0001] The utility model relates to the field of building construction, in particular to a UHPC assembled folding beam staircase. Background Art

[0002] In the prior art, stairs generally adopt cast-in-place structure, which has heavy weight, inconvenient construction, rough surface and needs secondary repair. There are also prefabricated stairs in the prior art, but the existing prefabricated stairs also have the problems of being too heavy and inconvenient to install. In view of this, it is necessary to design a UHPC assembled folding beam staircase. Summary of the invention

[0003] In view of the deficiencies in the prior art, the utility model provides a UHPC assembled folding beam staircase.

[0004] The technical solution of the utility model to solve the above problems is:

[0005] A UHPC assembled folding beam staircase comprises an upper end plate, a lower end plate, a folding beam and a stair tread; wherein, the upper end plate and the lower end plate are respectively provided at both ends of the stair tread; the folding beam is provided on both sides of the stair tread, the plane of the folding beam is flush with the tread surface of the stair tread, and the vertical surface of the folding beam is flush with the skirting surface of the stair tread; a thickened area is provided on the side of the upper end plate and the lower end plate away from the stair tread, and a connection reserved hole is opened in the thickened area.

[0006] Furthermore, the upper end plate, the lower end plate, the folded beam and the stair treads are integrally cast from UHPC material.

[0007] Furthermore, the thickness of the stair tread is 30-35mm, the thickness of the folded beam is 60-80mm, and the thickness of the thickened area is 150-200mm; the side of the upper end plate and the lower end plate close to the stair tread is an equal thickness area with the same thickness as the stair tread, and the length of the equal thickness area is 80-100mm.

[0008] Furthermore, a plurality of anti-slip grooves are provided on one side of the tread surface of the stair tread close to the outer edge.

[0009] Furthermore, there are two anti-skid grooves, and the anti-skid grooves are in an inverted triangle structure.

[0010] Furthermore, the width of the opening of the anti-slip groove is 10 to 15 mm, and the depth is 5 to 10 mm.

[0011] Furthermore, chamfers are provided at the outer corners of the tread surface of the stair tread.

[0012] Furthermore, an embedded steel plate and a plurality of embedded steel bars are provided inside the upper end of the folding beam, the width of the embedded steel plate is consistent with the thickness of the folding beam; the length of the embedded steel bars is 145 to 245 mm.

[0013] Furthermore, the shape of the embedded steel plate corresponds to the outer shape of the bottom of the upper end of the folding beam, and the embedded steel plate includes a horizontal section, a vertical section and an inclined section.

[0014] Furthermore, a plurality of lifting holes are arranged on the outer side surface of the folding beam, and a plurality of lifting ears and railing embedded steel plates are arranged on the plane of the folding beam.

[0015] The utility model has the advantages of light weight, great toughness, and is more convenient to transport and install. The staircase is formed as a whole in one step and does not require secondary repair, thus shortening the construction period and having good durability. While ensuring the construction quality, it improves the construction efficiency and reduces the construction cost. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a schematic diagram of the structure of a preferred embodiment of the utility model;

[0017] Figure 2 A side view of a stair step in a preferred embodiment of the utility model;

[0018] Figure 3 A side view of a preferred embodiment of the utility model;

[0019] Figure 4 It is a partial schematic diagram of the stair treads in the preferred embodiment of the utility model;

[0020] Figure 5 This is a schematic diagram of the installation of the folding beam in a preferred embodiment of the utility model;

[0021] Figure 6 This is a schematic diagram of the installation of the upper end plate in a preferred embodiment of the utility model;

[0022] In the figure: upper end plate 1, lower end plate 2, folding beam 3, stair tread 4, anti-slip groove 5, lifting hole 6, embedded steel plate for railing 7, lifting ear 8, reserved connection hole 9, embedded steel plate 10, cast-in-place cantilever ear 11, weather-resistant glue 12, PE rod 13, filler 14, tarpaulin 15, cement mortar 16, floor beam 17, grouting material 18, bolt 19, anchor head 20, chamfer 21, embedded steel bar 22. DETAILED DESCRIPTION

[0023] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention is further described below with reference to specific illustrations.

[0024] UHPC Ultra-High Performance Concrete, referred to as UHPC, is a new type of cement-based structural engineering material. UHPC material has the advantages of light weight, high strength, high toughness and dense surface.

[0025] Example 1, see Figures 1 to 3 As shown, a UHPC assembled folding beam staircase comprises an upper end plate 1, a lower end plate 2, a folding beam 3 and a stair tread 4; wherein, an upper end plate 1 and a lower end plate 2 are respectively provided at both ends of the stair tread 4; folding beams 3 are provided on both sides of the stair tread 4, the plane of the folding beam 3 is flush with the tread surface of the stair tread 4, and the vertical surface of the folding beam 3 is flush with the skirting surface of the stair tread 4; a thickened area is provided on the side of the upper end plate 1 and the lower end plate 2 away from the stair tread 4, and a connection reserved hole 9 is opened in the thickened area. By providing the thickened area, the cross-sectional area can be increased, and the strength and bearing capacity of the stairs are improved. By providing the connection reserved hole 9 in the thickened area, subsequent installation can be facilitated.

[0026] In this embodiment, the upper end plate 1, the lower end plate 2, the folding beam 3 and the stair tread 4 are integrally cast by UHPC material. Furthermore, the strength of the UHPC material is UC120-UC140, and the steel fiber content is not less than 2%.

[0027] In this embodiment, the thickness of the stair tread 4 is 30-35 mm, the thickness of the folded beam 3 is 60-80 mm, and the thickness of the thickened area is 150-200 mm; the side of the upper end plate 1 and the lower end plate 2 close to the stair tread 4 is an equal thickness area with the same thickness as the stair tread 4, and the length of the equal thickness area is 80-100 mm.

[0028] See also Figure 4 As shown, in this embodiment, a plurality of anti-skid grooves 5 are provided on one side of the tread surface of the stair step 4 close to the outer edge; further, there are two anti-skid grooves 5, and the anti-skid grooves 5 are inverted triangle structure; further, the width of the opening part of the anti-skid groove 5 is 10-15 mm, and the depth is 5-10 mm.

[0029] See also Figure 4 As shown, in this embodiment, a chamfer 21 is provided at the positive corner of the tread surface of the stair step 4. The chamfer 21 is provided to avoid damage from collision and is safer to use. Further, the chamfer 21 is a 45° chamfer, and the side length of the chamfer 21 is 6 mm.

[0030] See also Figure 3 and Figure 5 As shown, in this embodiment, an embedded steel plate 10 and a plurality of embedded steel bars 22 are provided inside the upper end of the folding beam 3, and the width of the embedded steel plate 10 is consistent with the thickness of the folding beam 3; the length of the embedded steel bar 22 is 145 to 245 mm; further, the shape of the embedded steel plate 10 corresponds to the bottom shape of the upper end of the folding beam 3, and the embedded steel plate 10 includes a horizontal section, a vertical section and an inclined section; further, the embedded steel bar 22 adopts HRB400 grade steel bar, and the embedded steel plate 10 adopts Q235B steel plate.

[0031] In this embodiment, a plurality of lifting holes 6 are provided on the outer side surface of the folding beam 3, and a plurality of lifting ears 8 and railing embedded steel plates 7 are provided on the plane of the folding beam 3; the lifting holes 6 can be convenient for lifting during installation, and the lifting ears 8 can be convenient for lifting during transportation. The setting interval of the railing embedded steel plates 7 is 600 to 1000 mm. By setting the railing embedded steel plates 7, it is convenient to weld the railing.

[0032] During the on-site construction of the utility model, a lug 11 is provided on one side of the floor beam 17, a bolt 19 and an anchor head 20 are embedded in the lug 11, the surface of the cast-in-place lug 11 is leveled with cement mortar 16, and then a layer of linoleum 15 is laid, the embedded bolt 19 is inserted into the reserved hole 9 for positioning and tightened by a nut, so that the stair step 4 is connected to the cast-in-place lug 11, and a grouting material 18 is poured into the reserved hole 9. When the strength of the grouting material 18 reaches the requirement, it is sealed with a weather-resistant glue 12 (such as Figure 6 As shown); the gap between the stair step 4 and the cast-in-place pick 11 is filled with a filler 14, and the filler 14 is preferably a polystyrene filler. After filling, the PE rod 13 is pressed into the gap, and the upper surface is sealed with a weather-resistant glue 12.

[0033] The above shows and describes the basic principles and main features of the utility model and the advantages of the utility model. For those skilled in the art, it is obvious that the utility model is not limited to the details of the above exemplary embodiments, and can be implemented in other specific forms without departing from the spirit or basic features of the utility model. Therefore, no matter from which point of view, the embodiments should be regarded as exemplary and non-restrictive. The scope of the utility model is defined by the attached claims rather than the above description, and it is intended to include all changes within the meaning and scope of the equivalent elements of the claims. Any figure mark in the claims should not be regarded as limiting the claims involved.

[0034] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. A UHPC assembled folding beam staircase, characterized in that: The invention comprises an upper end plate (1), a lower end plate (2), a folding beam (3) and a stair tread (4); wherein the upper end plate (1) and the lower end plate (2) are respectively arranged at both ends of the stair tread (4); the folding beam (3) is arranged on both sides of the stair tread (4); the plane of the folding beam (3) is flush with the tread surface of the stair tread (4); the vertical surface of the folding beam (3) is flush with the skirting surface of the stair tread (4); a thickened area is arranged on the side of the upper end plate (1) and the lower end plate (2) away from the stair tread (4); the thickened area is provided with a connection reserved hole (9); an embedded steel plate (10) and a plurality of embedded steel bars (22) are arranged inside the upper end of the folding beam (3); the width of the embedded steel plate (10) is consistent with the thickness of the folding beam (3).

2. The folding beam staircase according to claim 1, characterized in that: The upper end plate (1), the lower end plate (2), the folding beam (3) and the stair treads (4) are integrally cast from UHPC material.

3. The folding beam staircase according to claim 1, characterized in that: The thickness of the stair tread (4) is 30-35 mm, the thickness of the folded beam (3) is 60-80 mm, and the thickness of the thickened area is 150-200 mm; the side of the upper end plate (1) and the lower end plate (2) close to the stair tread (4) is an equal thickness area with the same thickness as the stair tread (4), and the length of the equal thickness area is 80-100 mm.

4. The folding beam staircase according to claim 1, characterized in that: A plurality of anti-slip grooves (5) are arranged on one side of the step surface of the stair step (4) close to the outer edge.

5. The folding beam staircase according to claim 4, characterized in that: There are two anti-skid grooves (5), and the anti-skid grooves (5) are in an inverted triangle structure.

6. The folding beam staircase according to claim 4 or 5, characterized in that: The width of the opening of the anti-slip groove (5) is 10-15 mm, and the depth is 5-10 mm.

7. The folding beam staircase according to claim 1, characterized in that: The positive corner of the tread surface of the stair tread (4) is provided with a chamfer (21).

8. The folding beam staircase according to claim 1, characterized in that: The length of the embedded steel bar (22) is 145-245 mm.

9. The folding beam staircase according to claim 1, characterized in that: The shape of the embedded steel plate (10) corresponds to the outer shape of the upper end and bottom of the folding beam (3), and the embedded steel plate (10) comprises a horizontal section, a vertical section and an inclined section.

10. The folding beam staircase according to claim 1, characterized in that: The outer side surface of the folding beam (3) is provided with a plurality of lifting holes (6), and the plane of the folding beam (3) is provided with a plurality of lifting ears (8) and a railing embedded steel plate (7).

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