CN216196146U - Assembled full-prefabricated staircase and assembled staircase building - Google Patents

Abstract

The utility model relates to an assembled fully-prefabricated staircase and an assembled staircase building, which comprise a stair section plate, a step plate connecting piece and a stair section plate connecting piece, wherein the step plate is positioned above the stair section plate and is connected with the stair section plate through the step plate connecting piece; the end part of the bench plate is connected with the bench plate connecting piece; the bench plate is a sandwich flat plate, and the face plate and the bottom plate of the bench plate are made of UHPC. The assembled fully-prefabricated staircase is integrally formed in a factory, has the characteristics of light weight, high strength, good ductility, good durability, good crack resistance, self-repairing of cracks, convenience in construction and installation, material saving, high safety redundancy and the like, and can be widely applied to various assembled buildings for industry, civilian use and the like. Sufficient deformation space is arranged between the stair section plate and the main structure of the assembly type stair building, damage to the stair and the main structure caused by external force can be reduced, and the idea of 'soft-gram stiffness' is embodied.

Description

Assembled full-prefabricated staircase and assembled staircase building

Technical Field

The utility model relates to the technical field of constructional engineering, in particular to an assembled fully-prefabricated staircase and an assembled staircase building.

Background

The prefabricated reinforced concrete stair is divided into three parts, namely a platform plate, a platform beam and a stair section, and the components are prefabricated in a processing plant or a construction site and assembled during construction; the prefabricated reinforced concrete stair has the advantages of heavy self weight, complex template and high manufacturing cost, and the price of the special-shaped stair with small yield is several times that of a cast-in-place stair. The assembled steel structure stair, the cost is high, and fire behavior is poor, and later maintenance cost is high, needs regular maintenance. How to construct an economical and attractive assembled stair with simple production and construction is always an ideal target for the development of assembled buildings.

At present, the prefabricated assembled stairway mainly comprises a prefabricated concrete stairway and a steel structure stairway.

Prefabricated concrete stair

The advantages are that: 1, construction progress can be accelerated: the cast-in-place stair template is erected and removed, the ribs are bound, and the concrete is poured with great labor, so that the progress is influenced; the prefabricated staircase does not occupy stations, can be prefabricated in advance, and can be quickly installed; 2, saving raw materials: the template material is saved, and a set of templates can be used for drilling a plurality of stair sections; 3, the prefabricated staircase has good quality, regular appearance and uniform size; 4, the pedestrian up-and-down passage can be quickly formed, so that a temporary passage is saved, and the construction personnel can get on and off conveniently.

The disadvantages are as follows: the method comprises the following steps that 1, influenced by the height and depth of a building, most of the conventional assembled reinforced concrete stairs are applied to residential projects, and the height of other types of buildings is changed greatly, the types of stair sections are more, the utilization rate of a mold is low, the production efficiency is low, and the production cost is high; 2, the existing assembly type reinforced concrete stair has heavy self weight, inconvenient construction high-altitude hoisting, low construction speed and difficult quality control; 3, the assembly rate is low, and the advantages of green, quickness, standardized production, energy conservation, environmental protection and high mechanization degree of the assembly type building can not be fully exerted.

Stair with steel structure

The advantages are that: 1, the processing is simple, the welding speed in a factory or on site is high, and complex template support is not needed; 2, the weight is light, and the integral structure is resistant to earthquake.

The disadvantages are as follows: 1, the use comfort is poor, the vibration is large, and the method is only suitable for industrial buildings; 2, the corrosion resistance and the fire resistance are poor, the durability is poor, and the subsequent maintenance cost is high; 3, the manufacturing cost is high.

SUMMERY OF THE UTILITY MODEL

The application provides a prefabricated staircase and assembled stair building entirely of assembled, its template utilization rate of solving current precast concrete stair is low problem foremost, secondly solves the heavy problem of current precast concrete stair weight again.

The application is realized by the following technical scheme:

the assembly type fully-prefabricated staircase comprises a staircase section plate, a step plate connecting piece and a staircase section plate connecting piece, wherein the step plate is positioned above the staircase section plate and is connected with the staircase section plate through the step plate connecting piece; the end of the bench plate is connected with the bench plate connecting piece.

In particular. The ladder section plate is a sandwich flat plate and comprises a panel, a bottom plate, a steel bar truss, a filling material and an end socket steel plate, wherein the filling material is positioned among the panel, the bottom plate and the end socket steel plate, and the steel bar truss is anchored with the panel and the bottom plate; the bench plate connecting piece is connected with the end socket steel plate.

In particular, both the face plate and the base plate are made of UHPC.

Optionally, the steel bar truss is a triangular truss.

Optionally, the filling material is foam concrete.

Particularly, the ladder section plate connecting piece is a straight steel plate.

Particularly, the step plate comprises a transverse plate and a vertical plate, and the upper end of the vertical plate is connected with one end of the transverse plate;

the step plate connecting pieces comprise first step plate connecting pieces and second step plate connecting pieces, the top of each first step plate connecting piece is connected with the transverse plate, and the bottom of each first step plate connecting piece is connected with the stair section plate; one end of the second step plate connecting piece is connected with the vertical plate, and the other end of the second step plate connecting piece is connected with the first step plate connecting piece.

Optionally, the thickness of the bench plate is 100mm-500mm, and the thickness of the tread plate is 10mm-30 mm.

The assembly type stair building comprises a platform plate, a platform beam and the assembly type fully-prefabricated stair, the ladder section plate connecting pieces are divided into two types, namely semi-rigid connecting pieces and sliding hinge connecting pieces, the upper ends of the ladder section plates are connected with the semi-rigid connecting pieces, and the lower ends of the ladder section plates are connected with the sliding hinge connecting pieces;

the bench board upper end is through half rigid coupling connecting piece and landing slab, the half rigid coupling of platform roof beam, bench board lower extreme is through slip hinge connecting piece and landing slab, platform roof beam sliding connection.

Particularly, the semi-rigid connection connecting piece is welded with the platform plate, and cement mortar is filled in gaps;

the sliding hinge connecting piece is connected with the platform beam through a polytetrafluoroethylene plate, a groove is reserved in the platform beam, the sliding hinge connecting piece is installed in the groove, and a foamed polyethylene rod is placed in a gap between the sliding hinge connecting piece and the groove.

Compared with the prior art, the method has the following beneficial effects:

the assembled fully-prefabricated staircase is composed of the stair section plates and the step plates, has regular composition elements, has low requirements on production templates, and is suitable for various special-shaped staircases;

2, the stair is fully prefabricated, the structure and decoration are integrated, the industrialization degree is high, the prefabrication rate is high, the field wet operation is less, and the advantages of an assembly type building can be reflected;

3, the design of full prefabrication, the surface decoration of the step plate can be processed in factories, the lower surface is free from plastering, the assembly rate is further improved, and the construction speed is further accelerated;

4, the assembled stair is light in weight, high in strength, convenient to transport and hoist, and greatly contributes to structural seismic resistance and economy;

5, the face plate and the bottom plate of the ladder section plate adopt UHPC, and the plate has ultrahigh durability and self-healing capability; the crack is not generated generally, the small crack has self-repairing capability, and the use comfort level is high;

6, the production process is simple, no special equipment is needed, and the bench plates are molded at one time; the joint of the bench plate adopts a steel connecting piece, so that the industrial production and the field installation are facilitated;

7, the ladder section plates adopt sandwich flat plates, the stress is efficient and reasonable, the span of the ladder section plates almost has no influence on the weight, and the advantage of the ladder section plates applied to the span of more than 4m is more obvious;

8, the full prefabricated staircase of assembled, full play UHPC's comprehensive properties, material properties is excellent to traditional prefabricated staircase defect has been avoided: the production process is simple, and special equipment is not needed; besides good mechanical properties, the coating also has the advantages of corrosion resistance, good anti-permeability performance, energy conservation, low consumption, environmental protection and the like, and can be widely applied to various assembled buildings for industry, civilian use and the like;

9, there is sufficient deformation space between the stair section board of this application assembled stair building and the major structure, reducible external force has embodied the thought of "with soft gram just" to stair and major structure's destruction.

Drawings

The accompanying drawings, which are included to provide a further understanding of the embodiments of the utility model and are incorporated in and constitute a part of this application, illustrate embodiments of the utility model and together with the description serve to explain the principles of the utility model.

FIG. 1 is a schematic structural diagram of an assembled fully-prefabricated staircase according to an embodiment of the present application;

FIG. 2 is a top view of a flight deck in an embodiment of the present application;

FIG. 3 is a cross-sectional view taken at A-A of FIG. 2;

FIG. 4 is a schematic view of the attachment of the step plate to the flight plate in the embodiment of the present application;

FIG. 5 is a schematic view of the connection of the upper end of the prefabricated staircase with the main structure of the building;

FIG. 6 is a cross-sectional view taken at B-B of FIG. 5;

FIG. 7 is a schematic view of the connection of the lower end of the fabricated fully prefabricated staircase with the building main structure;

fig. 8 is a cross-sectional view at C-C in fig. 7.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments. It is to be understood that the described embodiments are only a few embodiments of the present invention, and not all embodiments. The components of embodiments of the present invention generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations.

Thus, the following detailed description of the embodiments of the present invention, presented in the figures, is not intended to limit the scope of the utility model, as claimed, but is merely representative of selected embodiments of the utility model. All other embodiments, which can be obtained by a person skilled in the art without any inventive step based on the embodiments of the present invention, are within the scope of the present invention.

In addition, the embodiments of the present invention and the features of the embodiments may be combined with each other without conflict. It should be noted that, in the present specification, the embodiments are all described in a progressive manner, each embodiment focuses on differences from other embodiments, and the same and similar parts among the embodiments may be referred to each other.

It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures.

In the description of the present invention, it should be noted that the terms "upper" and "lower" indicate the orientation or position relationship based on the orientation or position relationship shown in the drawings, or the orientation or position relationship which is usually placed when the utility model is used, or the orientation or position relationship which is usually understood by those skilled in the art, and are only for the convenience of describing the present invention and simplifying the description, but do not indicate or imply that the device or element which is referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and the like are used merely to distinguish one description from another, and are not to be construed as indicating or implying relative importance.

In the description of the present invention, it should also be noted that, unless otherwise explicitly specified or limited, the terms "disposed," "mounted," "connected," and "connected" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

Example one

As shown in fig. 1, the assembled fully prefabricated staircase disclosed in this embodiment includes a stair tread 1, a tread 2, a tread connecting member 3 and a stair tread connecting member. The step plate 2 is positioned above the stair section plate 1 and is connected with the stair section plate 1 through a step plate connecting piece 3. The both ends of bench board 1 are equipped with bench board connecting piece, and bench board connecting piece is used for connecting bench board 1, landing slab 5 and platform roof beam 6, coordinates three's deformation.

As shown in fig. 1-3, the bench slab 1 is a sandwich slab, and specifically includes a face slab 11, a bottom slab 12, a steel bar truss 13, a filler 14, and a head steel plate 15. The filler material 14 is located between the face plate 11, the bottom plate 12 and the closure plate 15. The steel bar truss 13 is anchored with the face plate 11 and the bottom plate 12 and is used for bearing the shearing force of the ladder sections and coordinating the deformation of the face plate 11 and the bottom plate 12.

The face plate 11 and the bottom plate 12 of the bench plate 1 are used as components for bearing bending moment of the bench, the face plate 11 and the bottom plate 12 are both made of ultra-high performance concrete UHPC, and the UHPC has the characteristics of ultra-high strength compressive strength of 120MPa-200MPa and ultra-high durability.

Optionally, in order to reduce the thickness of the face plate 11 and the bottom plate 12, the UHPC may be configured with steel fibers, and no steel bar other than the steel bar truss 13 is required to be arranged in the face plate 11 and the bottom plate 12, which is beneficial to simplifying the production process.

To further reduce the thickness of the panels 11 and the bottom plate 12, the steel bar truss 13 may use high-strength steel bars, including but not limited to HRB500 and HRB 600. In particular, the steel bar truss 13 is a triangular truss, which ensures the out-of-plane stability of the face plate 11 and the bottom plate 12 when stressed.

The filling material 14 may be selected from foam concrete, and the filling material 14 may be cast in place or prefabricated. The packing material 14 may be provided with lines inside to ensure that the lines are separated from the main structure. The compressive strength of the foam concrete is 1-4MPa, and the foam concrete can also be used as the out-of-plane constraint of the 13 web members of the steel bar truss to prevent the out-of-plane instability of the web members; in addition, the filling material 14 can also be used as a template during panel pouring, so that a core pulling process is avoided, and the production process is simplified.

The end socket steel plate 15 is connected with the chord member bar perforation plug welding of the steel bar truss 13 and is used as a variable template of the bench slab 1. Particularly, the end socket steel plate 15 is a straight steel plate and can be used as a side template for producing the bench boards 1 and a steel plate for welding the connecting piece and the bench boards 1.

The panel 11 and the bottom plate 12 are made of UHPC, the UHPC has ultrahigh durability, compactness, strength and self-healing capability, the requirements of the thickness of a protective layer of the steel bar truss 13 and the anchoring thickness can be reduced, the steel bar truss cannot crack generally, and small cracks have self-healing capability; the filling material 14 is made of foam concrete, so that buckling of the web members of the steel bar truss 13 can be restrained, and external instability of the web members can be prevented.

As shown in fig. 4, the tread plate 2 as a stair step includes a horizontal plate 21 and a vertical plate 22, and the upper end of the vertical plate 22 is connected to one end of the horizontal plate 21. The step plate connection member 3 includes a first step plate connection member 31 and a second step plate connection member 32. The top of the first step plate connecting piece 31 is connected with the transverse plate 21, and the bottom end is connected with the stair section plate 1; one end of the second step plate connector 32 is connected to the vertical plate 22, and the other end is connected to the first step plate connector 31.

Optionally, the first step plate connecting member 31 is a steel pipe, the second step plate connecting member 32 is a steel bar, and the second step plate connecting member 32 is welded to the first step plate connecting member 31.

Particularly, the ladder section plate connecting piece adopts a straight steel plate. One end of the bench plate connecting piece is fixedly connected with the end socket steel plate 15 in a welding or threaded connection mode, and the other end of the bench plate connecting piece is used for being connected with the platform plate 5 and the platform beam 6.

The assembled fully-prefabricated staircase is composed of the stair section plates and the step plates, has regular composition elements, has low requirements on production templates, and is suitable for various special-shaped staircases; and compare in ordinary concrete slab, the equal very big degree reduction of panel 11 thickness, bottom plate 12 thickness and reinforcing bar protective layer thickness of this application, when guaranteeing reinforcing bar protective properties and atress performance, do benefit to and reduce the whole weight of bench board 1.

Based on above-mentioned assembled stair, this embodiment still discloses an assembled stair building, including landing slab 5, landing beam 6 and above-mentioned assembled stair.

The bench plate connecting pieces are divided into two types, namely a semi-rigid connecting piece 41 and a sliding hinge connecting piece 42, and the semi-rigid connecting piece 41 and the sliding hinge connecting piece 42 are respectively arranged at two ends of the bench plate 1. Specifically, as shown in fig. 1, the bench plate 1 is connected at its upper end to a semi-rigid connection 41 and at its lower end to a slide hinge connection 42.

The upper end of the bench plate 1 is connected with the platform plate 5 through a semi-rigid connection connecting piece 41, and the lower end of the bench plate 1 is connected with the platform plate 5 through a sliding hinge connecting piece 42. Specifically, as shown in fig. 5 and 6, the semi-rigid connection member 41 is welded to the deck plate 5, and the gap is filled with cement mortar 7. As shown in fig. 7 and 8, the sliding hinge connection member 42 is connected to the platform beam 6 through a teflon plate, and the platform plate 5 needs to be provided with a groove 51 in advance to reserve a connection plate installation space and a sliding space.

The slide hinge connector 42 is fitted in the groove 51, and the foamed polyethylene rod 9 is placed in a gap between the slide hinge connector 42 and the groove 51. Alternatively, the foamed polyethylene rod 91 may be disposed in a transverse direction and may be disposed in a longitudinal direction.

The number of the semi-rigid links 41 and the sliding hinge links 42 is appropriately set as required, and generally should be not less than 2.

The bench plate connecting piece is connected with the bench plate 1, the platform plate 5 and the platform beam 6 to coordinate the deformation of the three. Under the normal use state, the stair section plate connecting piece transmits the vertical force of the stair section plate 1, so that the normal use function of the stair is ensured; during earthquake, one end of the stair is semi-rigidly connected with the main body structure, and the other end of the stair is slidably connected with the main body structure, so that an enough deformation space is ensured between the stair section plate 1 and the main body structure, the damage of earthquake action to the stair and the main body structure is reduced, the smoothness of an escape passage during earthquake is ensured, and the thought of 'soft-to-rigid' is embodied.

Example two

In the embodiment, the thickness of the bench slab 1 is 100-500mm, wherein the thickness of the steel bar protection layers of the panel 11 and the bottom plate 12 is 5-10mm, and the thickness of the steel bar protection layer of the common concrete slab is 15 mm; the thickness of the face plate 11 and the bottom plate 12 may be 20mm to 30mm, while the thickness of the general concrete slab is 50mm at the minimum.

The production process of the bench slab 1 is the same as that of a floor slab, and the bench slab is formed in one step and is not described again. The dimensional change of the bench plate 1 has low requirements on the template, and the bench plate can be produced by adopting a simple template.

It is worth mentioning that the tread board 2 can adopt common UHPC as the fair-faced concrete veneer, no steel bar is arranged, the thickness of the plate can be 10-30mm, and the weight of the tread board can be greatly reduced. Of course, the step plate 2 can also adopt decorative UHPC, stone imitation and the like, and secondary decoration is avoided. The tread board 2 is cut and formed according to different requirements of the staircase without special templates.

The assembly type stair can be produced in a factory, the surface flatness is high, and secondary plastering and other procedures are not needed; the weight of the stair is 1/2 of that of a common concrete stair, so that the stair is light and high in strength, and the structural earthquake resistance and the economical efficiency are greatly facilitated; the assembled stair can be produced only by a common template, the product is composed of the regular stair section plates 1 and the step plates 2, various special-shaped stairs can be produced, and the template has no influence on the cost. The bench slab 1 is connected with the platform slab 5 and the platform beam 2 through steel structure connecting pieces, and construction is simple.

When the prefabricated staircase is used, the prefabricated staircase is completely prefabricated in a factory, only mortar and viscose are required to be poured locally on site, the industrialization degree is high, the prefabrication rate is high, the site wet operation is less, and the advantages of the prefabricated building can be reflected; the prefabricated design of the assembled stair is realized, the surface decoration of the step plate 2 can be processed in a factory, and the assembly rate is further improved; the regularity of the stair section plate 1 and the step plate 2 is high, the requirement on the template is reduced, and the industrial production is facilitated. The filling material 14 is light, the height of the bench slab 1 is increased, the weight is not influenced, the height of the bench slab 1 can be increased, and the advantage of the bench slab 1 with the span of more than 4m is more obvious.

The fully-prefabricated staircase is prefabricated in a whole factory, low in requirement on the template, good in durability, good in anti-seismic overall performance and light in weight, and achieves structural stress performance and anti-seismic performance of the assembled floor slab at low construction cost. The method has the advantages of low resource and energy consumption, low template requirement, high construction speed, simple connection and convenient construction; the component has light weight, is convenient to transport, hoist and mount, can be widely applied to low-rise, high-rise and super high-rise buildings of various agricultural houses, offices, hotels, businesses and the like, and is a high-quality assembled stair.

The above embodiments are provided to explain the objects, technical solutions and advantages of the present invention in further detail, and it should be understood that the above embodiments are merely exemplary embodiments of the present invention and are not intended to limit the scope of the present invention, and any modifications, equivalents, improvements and the like made within the spirit and principle of the present invention should be included in the scope of the present invention.

Claims (10)

1. The utility model provides a prefabricated staircase entirely of assembled which characterized in that: the stair tread comprises stair section plates (1), step plates (2), step plate connecting pieces (3) and stair section plate connecting pieces, wherein the step plates (2) are positioned above the stair section plates (1) and are connected with the stair section plates (1) through the step plate connecting pieces (3); the end part of the bench plate (1) is connected with the bench plate connecting piece;

the step plate (2) comprises a transverse plate (21) and a vertical plate (22), and the upper end of the vertical plate (22) is connected with one end of the transverse plate (21);

the step plate connecting pieces (3) comprise first step plate connecting pieces (31) and second step plate connecting pieces (32), the top parts of the first step plate connecting pieces (31) are connected with the transverse plate (21), and the bottom ends of the first step plate connecting pieces are connected with the stair section plates (1); one end of the second step plate connecting piece (32) is connected with the vertical plate (22), and the other end is connected with the first step plate connecting piece (31).

2. The assembled fully-prefabricated staircase of claim 1, wherein: the ladder section plate (1) is a sandwich flat plate, the ladder section plate (1) comprises a panel (11), a bottom plate (12), a steel bar truss (13), a filling material (14) and a seal head steel plate (15), the filling material (14) is located among the panel (11), the bottom plate (12) and the seal head steel plate (15), and the steel bar truss (13) is anchored with the panel (11) and the bottom plate (12); the bench plate connecting piece is connected with the end socket steel plate (15).

3. The assembled fully-prefabricated staircase of claim 2, wherein: the panel (11) and the bottom plate (12) are both made of UHPC.

4. The assembled fully-prefabricated staircase of claim 2, wherein: the steel bar truss (13) adopts a triangular truss.

5. An assembled fully prefabricated staircase according to claim 2, 3 or 4, characterized in that: the filling material (14) is foam concrete.

6. The fabricated fully prefabricated staircase according to claim 1, 2, 3 or 4, wherein: the ladder section plate connecting piece is a straight steel plate.

7. The fabricated fully prefabricated staircase according to claim 1, 2, 3 or 4, wherein: the first step plate connecting piece (31) is a steel pipe, and the second step plate connecting piece (32) is a steel bar.

8. The fabricated fully prefabricated staircase according to claim 1, 2, 3 or 4, wherein: the thickness of the ladder section plate (1) is 100mm-500mm, and the thickness of the step plate (2) is 10mm-30 mm.

9. An assembled stair building, includes landing slab (5) and landing beam (6), its characterized in that: further comprising an assembled fully prefabricated staircase according to any one of claims 1 to 8, said segment plate connectors being divided into two types, a semi-rigid connector (41) and a sliding hinge connector (42), said segment plates (1) being connected at their upper ends to the semi-rigid connector (41) and at their lower ends to the sliding hinge connector (42);

bench board (1) upper end is through half rigid coupling connecting piece (41) and landing slab (5), platform roof beam (6) semi-rigid connection, bench board (1) lower extreme passes through slip hinge connecting piece (42) and landing slab (5), platform roof beam (6) sliding connection.

10. A fabricated staircase building as claimed in claim 9, wherein: the semi-rigid connection connecting piece (41) is welded with the platform plate (5), and cement mortar (7) is filled in a gap;

the sliding hinge connecting piece (42) is connected with the platform beam (6) through a polytetrafluoroethylene plate, a groove (51) is reserved in the platform beam (5), the sliding hinge connecting piece (42) is arranged in the groove (51), and a foamed polyethylene rod (9) is arranged in a gap between the sliding hinge connecting piece (42) and the groove (51).

Images