CN212358904U

CN212358904U - Steel and panel combination assembled stair

Info

Publication number: CN212358904U
Application number: CN202020814648.3U
Authority: CN
Inventors: 陈明
Original assignee: Shanghai Open Steel Joist Co ltd
Current assignee: Shanghai Open Steel Joist Co ltd
Priority date: 2020-05-15
Filing date: 2020-05-15
Publication date: 2021-01-15
Anticipated expiration: 2030-05-15

Abstract

The utility model provides a steel and plate combined assembled stair, which comprises two ladder beams, a plurality of step folding pieces, a plurality of step plates, a plurality of skirting boards and a plurality of reinforcing mesh sheets; the two ladder beams are arranged in parallel, a plurality of step folding pieces are arranged between the two ladder beams in a stepped manner at equal intervals, and a step plate is erected between every two adjacent step folding pieces; a reinforcing mesh is laid on the surface of the tread; a skirting board is arranged between the two adjacent step boards. The utility model discloses a steel and panel combination assembled stair dead weight are light, the installation is convenient, and the prefabricated, the installation of part step board scene or the pouring of part spare part mill have good economic nature.

Description

Steel and panel combination assembled stair

Technical Field

The utility model relates to a building technical field especially relates to a steel and panel combination assembled stair.

Background

With the continuous promotion of the building assembly requirement in China, the PC assembled stairway is widely applied, but has the problems of great weight, high difficulty in transportation and hoisting and poor economical efficiency; the prefabricated staircase of all steel also has the problem that the transportation degree of difficulty is high, comprehensive cost is big.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a steel and panel combination assembled stair, the dead weight is light, the installation is convenient, and the prefabricated, the on-the-spot installation of part step board of part spare part mill or pouring have good economic nature.

In order to achieve the purpose, the utility model provides a steel and plate combined assembled stair, which comprises two ladder beams, a plurality of step folding pieces, a plurality of step plates, a plurality of skirting boards and a plurality of reinforcing mesh sheets;

the two ladder beams are arranged in parallel, a plurality of step folding pieces are arranged between the two ladder beams in a stepped mode at equal intervals, and the step plate is erected between every two adjacent step folding pieces; the reinforcing mesh is laid on the surface of the tread plate; the skirting board is arranged between the two adjacent step boards.

Preferably, the ladder beam is formed by integrally casting and pressing channel steel or H-shaped steel; the ladder beam comprises a horizontal part and an inclined part; the surface of the horizontal part is used for laying a rest platform plate, and the inclined part is used for erecting a ladder;

a plurality of connecting pieces are preset on the upper flange or the abdomen of the horizontal part; the rest platform plate is erected between the horizontal parts of the two ladder beams; the rest platform plate is fixedly connected with the connecting pieces on two sides through bolts or welding, so that the rest platform plate is erected on the upper flange of the horizontal part or is fixedly connected with the web of the horizontal part;

a plurality of connecting pieces are preset on the upper flange or the abdomen of the inclined part; the stepping folding piece is fixedly connected with the connecting pieces on two sides through bolts or welding respectively, so that the stepping folding piece is erected on the upper wing edge of the inclined part or is fixedly connected with the web of the inclined part.

Preferably, the rest platform plate is located two below, erect many section bar bearing secondary beam between the ladder roof beam.

Preferably, the resting platform plate and the step plate are both fiber cement plates.

Preferably, the ladder beam is a folded ladder beam or a curled ladder beam, and the ladder beam comprises a connecting web and a metal curled edge or a metal folded edge; the connecting web plate is provided with a connecting piece or an inserting hole to realize the fixed connection of the web plate and the stepping folding piece; the upper end and the lower end of the connecting web are both connected with the metal turned edges or the metal folded edges as flanges, the flanges are in a transverse L-shaped design or U-shaped design, and the folded edges of the flanges can be attached to the wall body.

Preferably, the step folding piece is a prefabricated steel folding piece and comprises a first horizontal part, a vertical part and a second horizontal part; the first horizontal part is vertically connected with one end of the vertical part, and the second horizontal part is vertically connected with the other end of the vertical part;

between the two stepping folding pieces which are adjacently erected up and down, the second horizontal part of the stepping folding piece positioned on the upper layer is parallel to the first horizontal part of the stepping folding piece positioned on the lower layer and is positioned on the same horizontal plane; the step plate is erected between the first horizontal part and the second horizontal part on the same horizontal plane, and the step plate is fixedly connected with the first horizontal part and the second horizontal part through self-tapping screws.

Preferably, the skirting board is attached to the vertical part of the step folding piece and is fixedly connected with the vertical part through a self-tapping screw.

Preferably, the lower end surface of the skirting board is abutted to the upper surface of the step board positioned on the lower layer, and the upper end surface of the skirting board extends out of the upper surface of the step board positioned on the upper layer by a plurality of heights, so that a step groove for placing a steel mesh and pouring concrete is formed by the step board, the two side ladder beams and the skirting board positioned on the upper layer.

Preferably, before the reinforcing mesh is placed on the surface of the step plate, the anti-skid strips are placed on the surface of the step plate.

Compared with the prior art, the utility model has the advantages that:

1. compare in traditional PC stair, the utility model discloses a steel is better with panel combination assembled stair economic nature, greatly reduced the cost of stair to the equipment is convenient, can realize the scene and build, and construction cycle is shorter, and application scope is wider.

2. Compared with the traditional all-steel stairway, the utility model skillfully adjusts the structure of the stepping folding piece, the traditional all-steel stairway is used to integrate the step plate and disconnect the skirting board, the utility model disconnects the step plate, and the skirting board and the local stepping horizontal section are integrated to form a Z shape, the stress is good, and the all-steel stairway can be bent and formed by galvanized materials, and is beautiful and durable; the other common method of the traditional all-steel stair is that the tread plate and the skirting board are connected into a whole, so that the stair is heavy, easy to deform during welding and not attractive in appearance.

3. The rest platform plate and the step plate are both fiber cement plates and serve as permanent bottom dies, and assembly and cast-in-place are combined, so that the assembly requirement is met, the labor is reduced, and the material consumption is reduced; the local cast-in-place has guaranteed the waterproof nature and the firmness of marking time again, improves the travelling comfort of using. Compared with an all-steel stair, the coating area of the fireproof coating can be reduced.

3. Prefabricated in mill, the structure of site-specific assemblage, can satisfy including the house, trade, a plurality of fields such as industry, at the construction stage, need not to place reinforcing bar net piece and concreting, only need build the ladder roof beam, mark time a book and step board, can realize the interim utilization of stair at the job site, accomplish the back at other constructions, can carry out laying of reinforcing bar net piece and pouring of concrete to stair at last and can accomplish, thereby make the application scope of stair wider, also for site operation has brought safety and convenience.

Drawings

Fig. 1 is a schematic system diagram of a steel and plate combined assembled staircase according to an embodiment of the present invention.

Fig. 2 is a schematic view of the installation steps of the steel and plate combined assembled stair in the first embodiment of the present invention.

Fig. 3 is a schematic view of a connection between a wall-side ladder beam and a folding member of different step in the first embodiment of the present invention.

Fig. 4 is a schematic view of the connection between the middle ladder beam and the opposite-type step folding member of the embodiment of the present invention.

Fig. 5 is a schematic structural view of a step folding member according to an embodiment of the present invention.

Fig. 6 is a schematic cross-sectional view of a side ladder beam and a folding member of different step in the second embodiment of the present invention.

Fig. 7 is a schematic structural view of an all-steel staircase in the prior art.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention clearer, the technical solutions of the present invention will be further described below.

The first embodiment is as follows:

as shown in fig. 1, the utility model provides a steel and plate combined assembled stair, which comprises two ladder beams 1, a plurality of step folding pieces 2, a plurality of step plates 3, a plurality of skirting boards 4 and a plurality of reinforcing mesh sheets 5;

a plurality of step folding pieces 2 are arranged between two step beams 1 in a stepped manner at equal intervals, a step plate 3 is erected between two adjacent step folding pieces 2, and in the embodiment, the step beams 1 are formed by integrally casting and pressing channel steel or H-shaped steel; as shown in fig. 3, the ladder beam 1 includes a horizontal portion 11 and an inclined portion 12; the surface of the horizontal part 11 is used for laying a rest platform plate 8, and the inclined part 12 is used for erecting a ladder;

a plurality of connecting pieces are preset on the flanges or the abdomen of the horizontal part 11; the rest platform plate 8 is erected between the horizontal parts 11 of the two ladder beams 1; the rest platform plate 8 is fixedly connected with the connecting pieces on the two sides through bolts or welding respectively, so that the rest platform plate 8 is erected on the upper flange of the horizontal part 11 or is fixedly connected with the web plate of the horizontal part 11;

a plurality of connecting pieces are preset on the upper flange or the belly of the inclined part 12; the stepping folding piece 2 is fixedly connected with the connecting pieces at two sides respectively through bolts or welding, so that the stepping folding piece 2 is erected on the upper wing edge of the inclined part 12 or fixedly connected with the web plate of the inclined part 12.

In the case of a staircase for a dwelling, as shown in fig. 3 and 4, the ladder bar 1 on one side of the wall has connecting members provided on the upper flanges of the horizontal part 11 and the inclined part 12, so that the landing deck 8 and the tread folding members 2 rest on the upper flange surface of the ladder bar 1 on the side of the wall; the ladder beam 1 has stronger bearing capacity on the loaded objects by the aid of a shelving type connection mode; in addition, if the stair leans against one side of the wall 9 and the step folding piece 2 is connected with the web plate of the stair beam 1, the flange of the stair beam 1 extends outwards relative to the side edge of the stair, so that the width of the stair is increased; most of residential corridors have limited space, and flanges of the ladder beams extend out of one side of the residential corridor, so that the residential corridor is not attractive and occupies a large area of the corridor.

The ladder beam 1 at one side far away from the wall 9 and the connecting pieces are arranged on the webs of the horizontal part 11 and the inclined part 12, so that the rest platform plate 8 and the step folding pieces 2 are connected with the web of the ladder beam 1 at one side far away from the wall 9; keep away from 1 top flange of ladder roof beam on one side of wall body 9 and need design rail and handrail more, consequently, keep away from 9 one sides of wall body and adopt the mode that 1 web of ladder roof beam and stair side are connected, what be convenient for add of rail and handrail establishes, increases its practicality.

When stair are used for under other the condition, all adopt the connection mode of folding 2 and ladder roof beam 1 web of marking time, aim at, the last flange surface of the ladder roof beam 1 of the stair both sides of being convenient for all can add establishes rail and handrail to guarantee the security of using.

In this embodiment, a plurality of section bar load-bearing secondary beams 10 are erected between two ladder beams 1 below the rest platform plate 8 to increase the maximum bearing capacity of the whole.

In this embodiment, the rest platform board 8 and the step board 3 are all fiber cement boards, effectively reduce holistic cost.

In the present embodiment, as shown in fig. 5, the step folding member 2 is a prefabricated steel folding member, and includes a first horizontal portion 21, a vertical portion 22, and a second horizontal portion 23; the first horizontal part 21 is vertically connected with one end of the vertical part 22, and the second horizontal part 23 is vertically connected with the other end of the vertical part 22; furthermore, at the other end of the second horizontal portion 23, a bent portion 24 of an "L" shaped steel is connected, said bent portion 24 being used for being connected to and supported by the inclined portion 12 of the ladder beam 1.

Between two stepping folding pieces 2 which are adjacently erected up and down, the second horizontal part 23 of the stepping folding piece 2 positioned on the upper layer is parallel to the first horizontal part 21 of the stepping folding piece 2 positioned on the lower layer and is positioned on the same horizontal plane; the step plate 3 is erected between a first horizontal part 21 and a second horizontal part 23 on the same horizontal plane, and the step plate 3 is fixedly connected with the first horizontal part 21 and the second horizontal part 23 through self-tapping screws; the skirting board 4 is attached to the vertical part 22 of the step folding piece 2 and is fixedly connected with the vertical part 22 through a self-tapping screw. As shown in fig. 7, for the design of the step folding member 2 of the existing all-steel stairway, it utilizes a step-type arrangement method between two step beams of the multiple step folding members 2, so that the step folding member 2 is directly used as a pedal, and the adjacent upper and lower pedals are designed to be hollow, without any connection measure, so that the safety of the user cannot be brought, and the whole stress cannot be ensured strongly.

The utility model discloses the arrangement method of folding 2 of marking time, then can be directly with mark time the vertical part 22 of folding 2 uses as the kickboard, lay step board 3 after, can regard as interim stair to use, step board 3 from top to bottom with mark time a 2 and be connected the back, mark time a 2 can be directly as the kickboard of connecting step board 3 down, holistic atress structure has been consolidated greatly, also not too much increase on the use amount of steel material simultaneously, only ingenious transform mark time a 2 with the ladder beam 1 the angle of connection can realize. Simultaneously in the construction stage, the utility model discloses the utilization is marked time and is rolled over the design of piece 2 as the foot kickplate, can not persist the fretwork point like traditional all steel stair, can not cause constructor's the sky of stepping on, has guaranteed constructor's safety.

If the traditional PC floor and the all-steel floor are designed with the kick plates, the kick plates are generally higher than the horizontal plane of the step plate, so that the concrete can be poured conveniently in the later period; in the construction stage, concrete is generally not poured in advance, but the concrete is used as a temporary stair for constructors, and if the foot pedal is installed in advance, the part of the foot pedal higher than the step plate is likely to cause inconvenience of the constructors, even trip the constructors. And the utility model discloses a mark time and roll over a 2 interim as the foot kickboard, then can not have the part that the foot kickboard exceeds the step board, constructor can use at ease, adds the running-board 3 of establishing the fiber cement board system again after the construction is finished in the perpendicular portion 22 of the book 2 of marking time, directly pours the concrete at last, accomplishes the construction.

The lower end face of the skirting board 4 is abutted to the upper surface of the step board 3 positioned on the lower layer, and the upper end face of the skirting board 4 extends out of the upper surface of the step board 3 positioned on the upper layer by a plurality of heights (such as 40 mm), so that a step groove for placing the reinforcing mesh 5 and pouring concrete is formed by the skirting board 4, the step beams 1 on the two sides and the skirting board 4 positioned on the upper layer. Before the reinforcing mesh 5 is placed on the step plate 3, the anti-slip strips 6 are placed on the surface of the step plate 3, so that the fiber cement plate can be protected from being damaged, and the decorative effect and the anti-slip effect are achieved. For the stairs with low decoration requirements, the skirting board 4 can be directly leveled with the step board 3 without making a step groove; no concrete is poured.

As shown in fig. 2, the installation steps of the steel and plate assembled stairway of the present invention are: as shown in fig. 2a, firstly, two ladder beams 1 and a plurality of step folding pieces 2 are fixedly connected; as shown in fig. 2b, the tread boards 3 and the rest platform boards 8 are then arranged on the surfaces of the ladder beam 1 and the tread folding pieces 2, and are fixedly connected with the tread folding pieces 2 by bolts, and the profile load-bearing secondary beams 10 are correspondingly arranged below the rest platform boards 8.

After the steps, the stair is preliminarily installed and finished, the stair can be preliminarily applied to a construction site and is practical as the stair, no skirting board 4 is installed at the moment, any influence on walking of constructors cannot be caused, and after other projects are finished, the stair can be completed in construction.

After other constructions are finished, whether the step plate 3 of the staircase shown in the figure 2b is damaged or not due to construction stepping is checked, and if the step plate is damaged, the step plate is replaced in time; after replacement, as shown in fig. 2c, the skirting boards 4 are installed, and the upper end surfaces of the skirting boards 4 extend out of the upper surfaces of the step boards 3 on the upper layer by a certain height, for example, 40mm, so as to form a "step groove" for placing the steel mesh 5 and pouring concrete with the step boards 3, the ladder beams 1 on both sides and the skirting boards 4 on the upper layer.

As shown in fig. 2d, after the installation of the skirting board 4 is completed, correspondingly installing an anti-slip strip 6 at the front edge position of the step board 3;

as shown in fig. 2e, after the anti-skid strip 6 is installed, a steel mesh 5 is laid on the surface of the tread plate 3;

as shown in fig. 2f, after the reinforcing mesh 5 is installed, fine stone concrete is poured into the step groove, and a surface curing agent, an epoxy coating or the like is applied to the step surface and the skirting board 4 surface to decorate the surface effect.

Finally, as shown in fig. 2g, a gypsum board 7 is fixed under the profile step folding piece 2.

The following will be through concrete measurement and calculation data, to the utility model discloses the economic nature contrast of steel and panel combination assembled stair compare in traditional PC stair.

Three types of stairs are all 1400mm in two platforms, 9 steps (8 surfaces), 155.56mm in step height, 260mm in surface width and 2080mm in step width; the horizontal length of the whole ladder is 4880 mm; the width of the stairs is 1.2 meters; one ladder section has a projected area of 5.856 square meters of platform.

1. PC stair: the factory price is 3000 per cubic meter; the transportation cost and the hoisting cost are 500 yuan/cubic meter; the thickness of the stair boards is 200, 9 steps are formed, the folded board thickness is 37mm, the thickness of the stair boards folded to the projection area is 214mm, and the total folded thickness is 251 mm;

price of one bench: 3500 yuan/cubic meter 251mm 1.2M wide 4.88M long 5145 yuan; unit price in terms of square meter: 878 yuan per square meter;

2. steel and concrete combination assembled stair: the ladder beam adopts 18a # channel steel: 20 kg/m; length 5223mm, two, total weight: 209 kilograms; according to the formula, 7 yuan/kg is 1462 yuan;

the step adopts a 2mm galvanized folded piece of 50+155+ 50; 9 in total, the length is 1.2 meters, and the total weight is 43 kilograms; according to the ratio of 7 yuan/kg; 300 yuan;

the step adopts a 12mm thick fiber cement board: a total of 8 blocks, with an area 1200 × 360 × 8 ═ 2.5 dm × 50/dm 125;

the skirting board adopts a 12mm thick fiber cement board: 9 blocks: 1.2 × 0.155 × 9 × 50/pm 83.7-membered; (30 yuan material, 20 yuan artificial)

10C-shaped steel < @400 under the platform, and 48 kilograms; 336 yuan;

the platform adopts 12mm thick fiber cement board: the area is 3.36 square meters, and 50 yuan/square meter is 168 yuan;

2@50 mesh sheets are arranged on the tread surface, and 40mm fine aggregate concrete is poured; according to 1200 yuan/cubic 281 yuan;

the total of the above: 2692 yuan.

Therefore, the stair with the same specification parameters has the best economical efficiency.

Example two:

compared with the first embodiment, the second embodiment has the same partial structure, the same structure is not repeated again, and the difference technical characteristics are that as shown in fig. 6, a hemming ladder beam 1 is adopted on one side of the staircase close to a wall body 9, and the hemming ladder beam 1 comprises a connecting web 13 and a metal hemming 14; the connecting web plate 13 is provided with a connecting piece to realize the fixed connection of the connecting web plate 13 and the stepping folding piece 2; the upper end and the lower end of the connecting web 13 are both connected with metal turned edges 14, the metal turned edges 14 are in a transverse-folding L-shaped design, the folded edges of the metal turned edges 14 can be attached to the wall 9, and are fixedly connected with the wall 9 through bolts, and the design scheme of the metal turned edges 14 facilitates the direct fixed connection of the ladder beam 1 and the wall 9, and can be used as a skirting line to achieve an attractive effect; the connection mode is different from the design scheme that the stairs close to the wall side are erected on the upper flange of the ladder beam 1 in the first embodiment, the problem that the stairs on the upper layer are seen from the stairs on the lower layer and the ladder beam erected below the stairs on the upper layer is not attractive can be avoided, and the applicability is higher for civil houses with higher aesthetic requirements; it should be noted that, in order to avoid the problem that the flanges of the ladder beam 1 occupy too much space in the corridor due to the web connection, the flanges, i.e. the transverse edges of the metal turned edges 14, may be made as narrow edges to save space.

The above description is only for the preferred embodiment of the present invention, and does not limit the present invention. Any technical personnel who belongs to the technical field, in the scope that does not deviate from the technical scheme of the utility model, to the technical scheme and the technical content that the utility model discloses expose do the change such as the equivalent replacement of any form or modification, all belong to the content that does not break away from the technical scheme of the utility model, still belong to within the scope of protection of the utility model.

Claims

1. A steel and plate combined assembled stair is characterized by comprising two stair beams, a plurality of step folding pieces, a plurality of step plates, a plurality of skirting boards and a plurality of reinforcing mesh sheets;

2. The steel and plate combined assembled stair of claim 1, wherein the ladder beam is formed by integrally casting and pressing channel steel or H-shaped steel; the ladder beam comprises a horizontal part and an inclined part; the surface of the horizontal part is used for laying a rest platform plate, and the inclined part is used for erecting a ladder;

a plurality of connecting pieces are preset on the upper flange or the abdomen of the inclined part; the stepping folding piece is fixedly connected with the connecting pieces on two sides through bolts, welding or plug-in connection, so that the stepping folding piece is erected on the upper flange of the inclined part or fixedly connected with the web of the inclined part.

3. The steel and plate combination fabricated staircase of claim 2, wherein a plurality of section bar load-bearing secondary beams are erected between the two ladder beams below the landing deck.

4. The steel and plate combination fabricated staircase of claim 2, wherein the landing and tread plates are fiber cement plates.

5. The steel and plate combination assembled stair of claim 1, wherein the ladder beam is a flanged ladder beam or a flanged ladder beam, the ladder beam comprising a connecting web and a metal flange or metal flange; the connecting web plate is provided with a connecting piece or an inserting hole to realize the fixed connection of the web plate and the stepping folding piece; the upper end and the lower end of the connecting web are both connected with the metal turned edges or the metal folded edges as flanges, the flanges are in a transverse L-shaped design or U-shaped design, and the folded edges of the flanges can be attached to the wall body.

6. The steel and plate combination fabricated staircase of claim 1, wherein the step folds are prefabricated steel folds comprising a first horizontal section, a vertical section and a second horizontal section; the first horizontal part is vertically connected with one end of the vertical part, and the second horizontal part is vertically connected with the other end of the vertical part;

7. The steel and plate combination assembled stair of claim 6, wherein the skirting board is attached to the vertical part of the step folding piece and is fixedly connected with the vertical part through a self-tapping screw.

8. The steel and plate combined assembled stair as claimed in claim 1, wherein the lower end surface of the skirting board abuts against the upper surface of the tread board at the lower layer, and the upper end surface of the skirting board extends out of the upper surface of the tread board at the upper layer by a plurality of heights, so as to form a 'step groove' for placing a steel mesh and pouring concrete with the tread board, the two side ladder beams and the upper layer skirting board.

9. The steel and plate combination fabricated staircase of claim 1, wherein cleats are placed on the ends of the tread surface before the tread surface is placed with a mesh of steel reinforcement.