CN217500854U - Precast concrete assembled stair - Google Patents
Precast concrete assembled stair Download PDFInfo
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- CN217500854U CN217500854U CN202221557939.4U CN202221557939U CN217500854U CN 217500854 U CN217500854 U CN 217500854U CN 202221557939 U CN202221557939 U CN 202221557939U CN 217500854 U CN217500854 U CN 217500854U
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Abstract
The utility model provides a precast concrete assembled stair, which comprises an inclined ladder component and a platform plate component, wherein the inclined ladder component comprises N precast inclined ladder plates, and N is a natural number more than or equal to 1; the platform plate assembly comprises prefabricated platform plates the number of which is matched with that of the prefabricated inclined ladder plates; the upper ends of the 1 st to the Nth prefabricated inclined ladder plates are detachably connected with the corresponding prefabricated platform plates through fixed connecting pieces respectively; the lower ends of the 2 nd to the Nth prefabricated inclined step plates are connected with the prefabricated platform plate in a sliding mode through sliding elastic connecting pieces respectively. The utility model has the advantages of, precast concrete assembled stair's prefabricated sloping ladder board lower extreme is equipped with slip elastic connection spare, slip elastic connection spare makes precast concrete assembled stair have the deformation controllability in level and vertical, can make precast concrete assembled stair have good anti-seismic performance, can adapt to the deformation that the ground uniform settlement of certain degree arouses in addition.
Description
Technical Field
The utility model relates to a building design construction technical field, concretely relates to precast concrete assembled stair.
Background
As the prefabricated building becomes a typical representative of the modernization of the building industry, the use of precast concrete prefabricated stairways is also increasing. In the prior art, a traditional cast-in-place concrete stair usually adopts a field mold, a binding steel bar and a concrete pouring, and the construction design and construction method is usually long in construction period, easy to generate construction waste and limited by main body construction. For stair railing parts, the rear anchoring manufacturing is generally adopted, and chiseling and damage to stairs are easily caused. Adopt traditional sliding support's cast in situ concrete stair construction inconvenient, and sliding support's antidetonation effect can not effectively be guaranteed.
In summary, there is a great need for a precast concrete fabricated stairway to solve the problems in the prior art.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a precast concrete assembled stair can improve the antidetonation effect, and concrete technical scheme is as follows:
a precast concrete assembled stair is characterized by comprising an inclined ladder assembly and a platform plate assembly, wherein the inclined ladder assembly comprises N precast inclined ladder plates, and N is a natural number more than or equal to 1; the platform plate assembly comprises prefabricated platform plates the number of which is matched with that of the prefabricated inclined ladder plates;
the upper ends of the 1 st to the Nth prefabricated inclined ladder plates are detachably connected with the corresponding prefabricated platform plates through fixed connecting pieces respectively; the lower ends of the 2 nd to the Nth prefabricated inclined ladder boards are connected with the prefabricated platform boards in a sliding mode through sliding elastic connecting pieces respectively.
Preferably, the prefabricated platform plate is provided with a support body, and the upper end of the prefabricated inclined ladder plate is detachably connected with the support body through a fixed connecting piece; the fixed connecting piece is a fastening bolt or a fastening screw.
Preferably, the support body is an L-shaped support body and comprises an L-shaped ladder beam and L-shaped ladder beam reinforcing bars, and the L-shaped ladder beam is arranged at the joint of the prefabricated inclined ladder plate and the prefabricated platform plate and used for supporting the prefabricated concrete assembled stair; the L-shaped ladder beam reinforcing bars are arranged inside the L-shaped ladder beam.
Preferably, the upper surface of the prefabricated platform plate is provided with an installation step; the sliding elastic connecting piece comprises a first elastic plate and a second elastic plate, the first elastic plate is located between the upper surface of the installation step and the prefabricated inclined ladder plate, and the second elastic plate is located between the side surface of the installation step and the end portion of the prefabricated inclined ladder plate.
Preferably, the first elastic plate is a polytetrafluoroethylene plate, and the second elastic plate is a polystyrene plate.
Preferably, the thickness of the polytetrafluoroethylene plate is 5-10mm, and the thickness of the polystyrene plate is not less than 50 mm.
Preferably, the prefabricated inclined ladder plate is provided with a railing embedded steel plate which is used for directly installing the railing of the prefabricated concrete assembled type stair.
Preferably, the tip of prefabricated oblique ladder board still leaves first installation gap between the contact surface with the supporter on the horizontal direction, supreme adoption polyphenyl thing, PE stick and injecting glue are filled and are sealed from down in proper order in first installation gap.
Preferably, a second installation gap is reserved between the end part of the prefabricated inclined ladder plate and the contact surface of the support body in the vertical direction, and the second installation gap is filled and sealed by adopting a felt and a cement mortar leveling layer.
Preferably, the prefabricated inclined ladder plate is further provided with a step, and the step is provided with an anti-skid groove.
Use the technical scheme of the utility model, the beneficial effect who has does: the utility model provides a precast concrete assembled stair's prefabricated sloping ladder board lower extreme is equipped with the slip elastic connection spare, the slip elastic connection spare makes precast concrete assembled stair have the deformation regulating power in level and vertical direction, can greatly reduce the rigidity of junction node, not only can reduce the vertical bearing capacity of precast concrete assembled stair, has good anti-seismic performance, but also can adapt to the deformation that the ground differential settlement of certain degree arouses; be equipped with L shape supporter on the precast platform board of precast concrete assembled stair, can make precast concrete assembled stair firm reliable. And simultaneously, the utility model provides a precast concrete assembled stair is apparent level and smooth, and on-the-spot mould is less, can reduce building rubbish's production, precast concrete assembled stair can realize mass production and prefabricated construction for standardized design, and is less to the influence of stair major structure construction, can save the time limit for a project, can be by wide application in the building.
In addition to the above-described objects, features and advantages, the present invention has other objects, features and advantages. The present invention will be described in further detail with reference to the drawings.
Drawings
The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this application, illustrate embodiment(s) of the invention and together with the description serve to explain the invention and do not constitute a limitation on the invention. In the drawings:
fig. 1 is a cross-sectional view of a precast concrete assembled stair standard layer provided by the preferred embodiment of the present invention;
fig. 2 is an enlarged view of the connection node a in fig. 1;
FIG. 3 is a plan view of the prefabricated ramp of FIG. 1;
FIG. 4 is a cross-sectional view of the prefabricated ramp of FIG. 1;
the prefabricated inclined ladder plate comprises a prefabricated inclined ladder plate body 1, a prefabricated platform plate body 2, a prefabricated fixed connecting piece 3, a fixed connecting piece 4, a sliding elastic connecting piece 4.1, a first elastic plate 4.2, a second elastic plate 5, a supporting body 5.1, an L-shaped ladder beam 5.2, an L-shaped ladder beam reinforcing bar 6, a railing embedded steel plate 7, a polyphenyl object 8, a PE rod 9, glue injection 10, an asphalt felt 11, a cement mortar leveling layer 12, a step 13, an anti-skid groove 14, a first hanging nail 15 and a second hanging nail.
Detailed Description
Embodiments of the invention will be described in detail hereinafter with reference to the drawings, but the invention can be implemented in many different ways as defined and covered by the claims.
Example (b):
the embodiment discloses a preferable prefabricated concrete assembled stair, which comprises an inclined ladder assembly, a platform plate assembly and a sliding elastic connecting piece 4, wherein the inclined ladder assembly comprises N prefabricated inclined ladder plates 1, and N is a natural number more than or equal to 1; the landing slab subassembly includes with prefabricated 1 assorted prefabricated landing slabs 2 of oblique ladder-board quantity.
The prefabricated inclined stair board 1 is further provided with a step 12, and the step 12 is provided with an anti-skid groove 13. Preferably, the thickness of the inclined plate of the prefabricated inclined ladder plate 1 is not less than 120mm, and reinforcing steel bars are arranged in the prefabricated inclined ladder plate 1.
Referring to fig. 2, the upper ends of the 1 st to nth prefabricated inclined ladder boards 1 are detachably connected with the corresponding prefabricated platform boards 2 through fixed connecting pieces 3 respectively; the lower ends of the 2 nd to the Nth prefabricated inclined ladder boards 1 are connected with the prefabricated platform boards 2 in a sliding mode through sliding elastic connecting pieces 4 respectively. Wherein, slip elastic connector 4 can make precast concrete assembled stair have the deformation regulating power in level and vertical, can reduce the vertical bearing capacity of precast concrete assembled stair, has good anti-seismic performance, can adapt to the deformation that the uneven settlement of foundation of certain degree arouses in addition.
Specifically, a support body 5 is arranged on the prefabricated platform plate 2, and the upper end of the prefabricated inclined ladder plate 1 is detachably connected with the support body 5 through a fixed connecting piece 3; the fixed connecting piece 3 is a fastening bolt or a fastening screw.
Specifically, the support body 5 is an L-shaped support body and comprises an L-shaped ladder beam 5.1 and an L-shaped ladder beam reinforcement 5.2, wherein the L-shaped ladder beam 5.1 is arranged at a connecting node of the prefabricated inclined ladder plate 1 and the prefabricated platform plate 2 and is used for supporting the prefabricated concrete assembled stairway; the L-shaped ladder beam reinforcing bars 5.2 are arranged inside the L-shaped ladder beam 5.1. The L-shaped support body can enable the precast concrete assembled stair to be stable and reliable. Meanwhile, the support body 5 has the same size and structure, and standardized production can be realized through a common die.
Specifically, the upper surface of the prefabricated platform plate 2 is provided with an installation step; the sliding elastic connecting piece 4 comprises a first elastic plate 4.1 and a second elastic plate 4.2, the first elastic plate 4.1 is positioned between the upper surface of the installation step and the prefabricated inclined step plate 1, and the second elastic plate 4.2 is positioned between the side surface of the installation step and the end part of the prefabricated inclined step plate 1.
In this embodiment, the first elastic plate 4.1 is preferably made of teflon plate, and the second elastic plate 4.2 is preferably made of polystyrene plate. Wherein, the thickness of the polytetrafluoroethylene plate is 5-10mm, and the thickness of the polyphenyl plate is not less than 50 mm.
Specifically, still be equipped with the pre-buried steel sheet of railing 6 on the prefabricated oblique step board 1 for the railing of direct mount precast concrete assembled stair can avoid digging and damaging when carrying out the secondary decoration to the precast concrete assembled stair that has already fashioned.
Specifically, first installation gap still remains between the tip of prefabricated oblique step 1 and the 5 contact surfaces of supporter in the horizontal direction, supreme polyphenyl 7, the PE stick 8 and the injecting glue 9 of adopting in proper order are filled and are sealed down to first installation gap.
Specifically, a second installation gap is reserved between the contact surface of the end part of the prefabricated inclined ladder plate 1 and the support body 5 in the vertical direction, and the second installation gap is filled and sealed by adopting an asphalt felt 10 and a cement mortar leveling layer 11; specifically, the linoleum 10 is painted on the surface of the cement mortar screed layer 11.
Specifically, referring to fig. 3 and 4, a first hanging nail 14 and a second hanging nail 15 can be further arranged on the prefabricated inclined step plate 1 of the prefabricated concrete assembled stair, and the first hanging nail 14 is arranged on the side surface of the prefabricated inclined step plate 1 and used for assisting demolding treatment during production and processing of the prefabricated inclined step plate 1; the second hanging nails 15 are pre-buried in the front of the prefabricated inclined ladder board 1 and used for fixing the traction ropes during hoisting. To the preparation of the precast concrete assembled stair that the span is big, easy fracture and damage when the drawing of patterns set up first hanging nail 14 and second hanging nail 15 and help carrying out the drawing of patterns to precast concrete assembled stair's prefabricated sloping step board 1 and handle for the drawing of patterns quality of precast concrete assembled stair obtains guaranteeing.
The embodiment provides a preferable prefabricated concrete assembled stair, a prefabricated inclined step plate 1 of the prefabricated concrete assembled stair adopts a prefabricated reinforced concrete structure, and a sliding elastic connecting piece 4 is arranged at the lower end of the prefabricated inclined step plate 1, so that the prefabricated concrete assembled stair has good deformation coordination capacity and can adapt to foundation settlement deformation; meanwhile, when the earthquake is coped with, the prefabricated concrete assembled stair can slide to a large extent under the action of earthquake force, and earthquake stress can be effectively released, so that the damage to the prefabricated concrete assembled stair is reduced, and the evacuation safety of personnel is ensured.
The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (10)
1. The prefabricated concrete assembled stair is characterized by comprising an inclined ladder component and a platform board component, wherein the inclined ladder component comprises N prefabricated inclined ladder boards (1), and N is a natural number more than or equal to 1; the platform plate assembly comprises prefabricated platform plates (2) the number of which is matched with that of the prefabricated inclined ladder plates (1);
the upper ends of the 1 st to the Nth prefabricated inclined ladder plates (1) are detachably connected with the corresponding prefabricated platform plates (2) through fixed connecting pieces (3); the lower ends of the 2 nd to the Nth prefabricated inclined ladder boards (1) are connected with the prefabricated platform boards (2) in a sliding mode through sliding elastic connecting pieces (4) respectively.
2. The precast concrete assembled stairway according to claim 1, wherein a support body (5) is arranged on the precast platform slab (2), and the upper end of the precast inclined stair slab (1) is detachably connected with the support body (5) through a fixed connecting piece (3); the fixed connecting piece (3) is a fastening bolt or a fastening screw.
3. The precast concrete fabricated stairway according to claim 2, wherein the support body (5) is an L-shaped support body including L-shaped ladder beams (5.1) and L-shaped ladder beam reinforcing bars (5.2), the L-shaped ladder beams (5.1) being provided at connection nodes of the precast ramp boards (1) and the precast landing boards (2) for supporting the precast concrete fabricated stairway; the L-shaped ladder beam reinforcing bars (5.2) are arranged inside the L-shaped ladder beam (5.1).
4. The precast concrete fabricated stairway according to claim 1, wherein an upper surface of the precast platform slab (2) is provided with a mounting step; the sliding elastic connecting piece (4) comprises a first elastic plate (4.1) and a second elastic plate (4.2), wherein the first elastic plate (4.1) is located between the upper surface of the installation step and the prefabricated inclined ladder plate (1), and the second elastic plate (4.2) is located between the side surface of the installation step and the end part of the prefabricated inclined ladder plate (1).
5. Precast concrete fabricated staircase according to claim 4, characterized in that the first elastic plate (4.1) is a teflon plate and the second elastic plate (4.2) is a polystyrene plate.
6. The precast concrete fabricated stairway according to claim 5, wherein the polytetrafluoroethylene plate has a thickness of 5-10mm and the polystyrene plate has a thickness of not less than 50 mm.
7. The precast concrete assembled stair according to any one of claims 1 to 6, wherein a rail embedded steel plate (6) is arranged on the precast inclined stair plate (1) and is used for directly installing a rail of the precast concrete assembled stair.
8. The precast concrete assembled stairway according to claim 7, wherein a first installation gap is left between the end of the precast inclined step plate (1) and the contact surface of the support body (5) in the horizontal direction, and the first installation gap is filled and sealed by adopting polyphenyl (7), a PE rod (8) and glue injection (9) from bottom to top in sequence.
9. The precast concrete fabricated stairway according to claim 7, wherein a second installation gap is left between the end of the precast slant board (1) and the contact surface of the support body (5) in the vertical direction, and the second installation gap is filled and sealed by using a linoleum (10) and a cement mortar leveling layer (11).
10. The precast concrete assembled stairway according to claim 1, wherein the precast inclined step boards (1) are further provided with step steps (12), and the step steps (12) are provided with anti-skid grooves (13).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221557939.4U CN217500854U (en) | 2022-06-21 | 2022-06-21 | Precast concrete assembled stair |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221557939.4U CN217500854U (en) | 2022-06-21 | 2022-06-21 | Precast concrete assembled stair |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217500854U true CN217500854U (en) | 2022-09-27 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202221557939.4U Active CN217500854U (en) | 2022-06-21 | 2022-06-21 | Precast concrete assembled stair |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN217500854U (en) |
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2022
- 2022-06-21 CN CN202221557939.4U patent/CN217500854U/en active Active
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