Prestress assembly type concrete stair

Abstract

The utility model relates to the technical field of assembly type stairs, in particular to a prestress assembly type concrete stair, which is characterized in that a halfpace is arranged on a platform beam plate, and a support plate is arranged on a walking beam plate, so that the walking beam plate and the platform beam plate are connected through the interaction of the support plate and the halfpace; the supporting plate is installed on the second halfpace, the construction measure that the walking beam plate is installed on the platform beam plate is completed, construction is simplified, the supporting plate and the platform beam plate are connected through the flexible connecting assembly, stability and connecting flexibility are enhanced, meanwhile, the elastic layer is arranged between the halfpace and the supporting plate, and under the combined action of the elastic layer and the flexible connecting assembly, the supporting plate and the platform beam plate are connected through the flexible connecting assembly. The connection stability is guaranteed, and the shock resistance is enhanced.

Description

Technical Field

[0001] The utility model relates to the technical field of assembled stairs, in particular to a prestressed assembled concrete staircase. Background Art

[0002] With the development of prefabricated buildings, prefabricated concrete stairs have the characteristics of saving construction period, reducing construction costs, saving construction site area, and excellent durability and earthquake resistance, which makes prefabricated concrete stairs widely studied and applied.

[0003] For example: Patent No. 201620543370.4 discloses a prestressed assembled staircase, including a stair tread and a multi-step unit fixed on the stair tread, each step unit including a step panel as a tread and a step side panel supporting the step panel, the stair tread is a prestressed stair tread with a thickness of 80-140 mm. The prestressed stair tread is used to reduce the thickness of the prefabricated stair tread components to achieve a weight reduction effect. The stair tread and the steps are prefabricated, installed and disassembled separately, and the components are lightweight, which minimizes the load, achieves mass production, and meets the needs of efficient construction.

[0004] Another example: Patent No. 202120932380.8 discloses an assembled prestressed beam light-weight staircase, including an upper stair beam and a lower stair beam, between which an inclined stair tread is provided, the stair tread is composed of two half stair treads spliced ​​together, the upper surface of the stair tread is provided with a plurality of step platforms along its length direction, one side of the stair tread is provided with a plurality of through holes penetrating the stair tread along its length direction, a steel rope in a tensioned state is provided in the through hole, a tensioning member is provided at one end of the steel rope, and a clamping member is provided at the other end, and the tensioning member and the clamping member are respectively located at the two ends of the through hole. The entire stair tread is formed by splicing two half stair treads together, which is convenient and quick during hoisting and greatly saves manpower; a through hole is provided in the stair tread, and a tensioned steel rope is provided in the through hole to ensure the strength of the entire stair tread, which is strong and durable; the steel rope is tightened by the tensioning member, and the operation method is simple; the structure is simple and the cost is low.

[0005] Another example: Patent No. 202321588545.X discloses a prestressed assembled hollow staircase, including a stair base and a plurality of hollow treads. The stair base is provided with a plurality of hollow treads, the interior of the hollow treads is provided with a cavity, the interior of the hollow treads is provided with a tread steel mesh, the interior of the stair base is provided with prestressed tendons, and the upper end of the stair base is provided with hanging tendons. Compared with ordinary assembled stairs of the same specifications, the self-weight can be reduced by more than 40%, thereby improving production efficiency and reducing construction costs.

[0006] It can be seen that the main technical problem studied in the prior art regarding the construction of prefabricated stairs is how to reduce the stability and self-weight of the prefabricated stairs during installation, so as to reduce the cost of the prefabricated stairs during installation. However, with the increasing emphasis on the seismic resistance of prefabricated stairs, how to balance the stability and flexible connection performance of prefabricated stairs during the design and construction of prefabricated stairs, and how to improve the installation stability of prefabricated stairs while enhancing the seismic resistance of prefabricated stairs has become a technical difficulty.

[0007] Based on this, this research team combined long-term construction practices and carried out a project research on prefabricated frame node connection technology for the company, and studied the connection nodes of prefabricated concrete stairs, providing a new structure for prestressed prefabricated concrete stairs. Utility Model Content

[0008] In order to solve the above technical problems existing in the prior art, the utility model provides a prestressed assembled concrete staircase.

[0009] This is achieved specifically through the following technical solutions:

[0010] A prestressed assembled concrete staircase comprises a step beam plate and a platform beam plate. The platform beam plates are located at both ends of the step beam plate, and a plurality of steps are provided on the inclined surface of the step beam plate. Support plates are integrally formed at both ends of the step beam plate. The platform beam plate is provided with a staircase on one end close to the step beam plate, and the staircase and the support plate can be matched and installed; an elastic layer is provided on the contact surface between the staircase and the support plate; a flexible connection component is provided between the support plate and the platform beam plate, and the flexible connection component can pass through the elastic layer.

[0011] By arranging a step platform on the platform beam plate and a support plate on the step beam plate, the step beam plate and the platform beam plate are connected through the interaction of the support plate and the step platform, thereby realizing the construction measure of installing the support plate on the step platform and completing the step beam plate on the platform beam plate, simplifying the construction, and using a flexible connection component to connect the support plate and the platform beam plate to enhance stability and connection flexibility. At the same time, by using an elastic layer between the step platform and the support plate, the stability of the connection is guaranteed and the seismic resistance is enhanced under the joint action of the elastic layer and the flexible connection component.

[0012] In order to be able to connect the support plate with the ladder platform so that the support plate is limited on the ladder platform to avoid slipping and enhance the stability of the installation connection, preferably, the flexible connection component includes a plurality of fixing columns vertically downwardly provided on the lower surface of the support plate, and a buckle groove is formed between two adjacent fixing columns; a plurality of fixing columns vertically upwardly provided on the upper surface of the ladder platform, and a groove is formed between two adjacent fixing columns; the fixing column located on the support plate can be inserted into the groove, and the fixing column located on the ladder platform can be inserted into the buckle groove; and / or the flexible connection component includes A plurality of fastening members are fixedly provided on the end of the support plate away from the step beam plate, a flexible component groove is provided on the platform beam plate, and a fastening column matching the fastening members is provided between the flexible component groove and the step platform; a buckle hole is provided on the fastening column, and the end of the fastening member away from the support plate can be inserted into the flexible component groove through the buckle hole; an elastic member is provided on the inner wall of the flexible component groove; one end of the elastic member is detachably connected to the fastening member, and the other end of the elastic member is integrally connected to the inner wall of the flexible component groove; a cover plate is provided on the top of the flexible component groove.

[0013] In order to enhance the flexibility of the fixing column when sliding in the groove and the buckle groove, preferably, an elastic layer is provided in the groove and an elastic layer is provided in the buckle groove. The elastic layer includes but is not limited to a rubber sheet; the thickness of the elastic layer is 0.3-1 cm.

[0014] In order to enhance the stability of the connection between the support plate and the platform beam plate and improve the convenience of installation, preferably, the fastening member is a screw rod, and a nut is provided on the flexible component groove. More preferably, the fastening member is integrally formed and connected with the support plate.

[0015] The invention can use but is not limited to hooking, bolting or welding when connecting the fastening member to the elastic member. This helps to reduce the difficulty of construction, and realizes that the fastening member is connected to the elastic member after passing through the buckle hole, thereby improving the connection stability between the support plate and the platform beam plate, enhancing the flexibility of the connection, and then improving the earthquake resistance.

[0016] In order to avoid the defects of the elastic member slipping off, shifting, etc., preferably, a positioning ring for positioning the elastic member is provided at the connection between the elastic member and the inner wall of the flexible component groove. In some operation schemes, the elastic member includes but is not limited to a spring.

[0017] More preferably, the positioning ring is integrally formed with the inner wall of the flexible component groove.

[0018] More preferably, the flexible assembly groove is filled with buffer sand.

[0019] In certain construction schemes created by the present invention, the stair steps and the upper surface of the step beam plate are integrally formed or detachably installed.

[0020] Compared with the prior art, the technical effects created by the present invention are embodied in:

[0021] The present invention improves the structure of the connection node between the step beam plate and the platform beam plate, thereby simplifying the installation process of the step beam plate and the platform beam plate and reducing the construction cost. At the same time, a flexible connection component and an elastic layer structure are introduced at the connection node to match the connection stability between the platform beam plate and the step beam plate, thereby improving the flexibility of the connection and enhancing the seismic resistance.

[0022] The invention has the advantages of simple structure, convenient construction, short construction period and low cost. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 Create an overall structural diagram for the present invention.

[0024] Figure 2 A schematic structural diagram of an embodiment of the present invention is provided.

[0025] Figure 3 Another structural schematic diagram of an embodiment of the present invention is created.

[0026] Figure 4 for Figure 3 Part I: Enlarged schematic diagram of the structure.

[0027] Figure 5 A schematic diagram of the local structure of another embodiment of the present invention is provided.

[0028] Figure 6 for Figure 2 Schematic diagram of the structure viewed from above.

[0029] Figure 7 for Figure 6 Schematic diagram of the structure without the cover.

[0030] 1-staircase 2-step beam plate 3-platform beam plate 4-support plate 5-staircase step 6-elastic layer 7-fastening column 8-cover plate 9-fastening hole 10-fastening part 11-elastic part 12-fixing column 13-nut 14-flexible component groove. DETAILED DESCRIPTION

[0031] The technical solution of the utility model is further defined below in conjunction with the accompanying drawings and specific implementation methods, but the scope of protection required is not limited to the description.

[0032] The platform beam plate 3 used in the invention is a beam structure cast on the lower floor and the upper floor of the building floor respectively. For the first floor, the platform beam plate 3 structure is extended by designing a ring beam structure on the foundation. The step beam plate 2 used in the invention is prefabricated, so steel cages are designed in the platform beam plate 3 and the step beam plate 2.

[0033] like Figure 1 As shown, in one embodiment, a prestressed assembled concrete staircase includes a step beam plate 2, which is used to connect the platform beam plate 3 located on the upper floor slab and the platform beam plate 3 located on the lower floor slab and is used to install and design the steps 5, the platform beam plate 3, which is used to support the step beam plate 2, so that the step beam plate 2 is connected to the upper floor slab and the lower floor slab, the platform beam plate 3 is located at both ends of the step beam plate 2, and a plurality of steps 5 are arranged on the inclined surface of the step beam plate 2, and the two ends of the step beam plate 2 are integrally formed with a support plate 4, which is used for the step platform 1 to interact and connect, and the platform beam 3 is used to support the step beam plate 2. A platform 1 is provided on one end of the plate 3 near the step beam plate 2, which is used for interaction and connection with the support plate 4, and the platform 1 and the support plate 4 can be installed in a matching manner; an elastic layer 6 is provided on the contact surface between the platform 1 and the support plate 4, so that a flexible structure is formed between the platform 1 and the support plate 4; a flexible connection component is provided between the support plate 4 and the platform beam plate 3, so that the support plate 4 and the platform beam plate 3 are limitedly connected, thereby enhancing stability, while ensuring flexibility and improving seismic resistance, and the flexible connection component can pass through the elastic layer 6.

[0034] During the construction and installation of the prestressed assembled concrete staircase created by the present invention, a platform beam plate 3 is designed and prefabricated on the upper floor and the lower floor where the staircase is installed, and at the same time, the step beam plate 2 is prefabricated by binding a steel cage, so that a support plate 4 is formed on the step beam plate 2, and a stair platform 1 is formed on the platform beam plate 3. In addition, when prefabricating the step beam plate 2 and the platform beam plate 3, a flexible connection component is prefabricated together, so that after the support plate 4 is installed on the stair platform 1, a stable connection is achieved. At the same time, the elastic layer 6 and the flexible connection component are used to achieve a flexible connection between the support plate 4 and the platform beam plate 3, thereby enhancing the earthquake resistance.

[0035] like Figure 2As shown, in a certain embodiment, the flexible connection component includes a plurality of fastening members 10 fixedly provided on the end of the support plate 4 away from the step beam plate 2, which are used to stably connect the support plate 4 with the platform beam plate 3, and a flexible component groove 14 is provided on the platform beam plate 3 for installing flexible components, and a fastening column 7 matching the fastening member 10 is provided between the flexible component groove 14 and the ladder platform 1; a buckle hole 9 is provided on the buckle column 7, and the end of the fastening member 10 away from the support plate 4 can be inserted into the flexible component groove 14 from the buckle hole 9; an elastic member 11 is provided on the inner wall of the flexible component groove 14; one end of the elastic member 11 is detachably connected to the fastening member 10, and the other end of the elastic member 11 is integrally connected to the inner wall of the flexible component groove 14; a cover plate 8 is provided on the top of the flexible component groove 14.

[0036] During prefabrication, a flexible component groove 14 (such as Figure 2 , Figure 5 , Figure 6 , Figure 7 The structure is shown in the figure, and then the fastening column 7 is formed to separate the ladder platform 1 from the flexible component groove 14. The fastening hole 9 structure for the fastening member 10 to pass through is prefabricated on the fastening column 7, and the fastening member 10 structure is prefabricated on the support plate 4; during installation, after the elastic layer 6 is installed between the support plate 4 and the ladder platform 1, the fastening member 10 passes through the elastic layer 6 and penetrates into the flexible component groove 14 through the button hole 9. At the same time, a plurality of elastic members 11 are prefabricated in the flexible component groove 14, and then the elastic member 11 and the fastening member 10 are connected into a whole by buckling, hooking or welding, and then the cover plate 8 is used to cover the top of the flexible component groove 14, that is, the installation between the step beam plate 2 and the platform beam plate 3 is completed, and the function of the fastening member 10 and the fastening column 7 is guaranteed, and the stable connection between the support plate 4 and the platform beam plate 3 is realized. At the same time, the structural design of the elastic member 11 and the elastic layer 6 improves the flexibility and enhances the seismic resistance.

[0037] like Figure 3 , Figure 4 and Figure 5As shown, in another embodiment, the flexible connection assembly includes a plurality of fixing columns 12 vertically downwardly provided on the lower surface of the support plate 4, and a buckle groove is formed between two adjacent fixing columns 12; a plurality of fixing columns 12 vertically upwardly provided on the upper surface of the step platform 1, and a groove is formed between two adjacent fixing columns 12; the fixing columns 12 on the support plate 4 can be inserted into the groove, and the fixing columns 12 on the step platform 1 can be inserted into the buckle groove. An elastic layer 6 is provided in the groove, and an elastic layer 6 is provided in the buckle groove. By setting a plurality of fixed columns 12 at intervals on the step 1, a groove is formed on the step 1; by setting a plurality of fixed columns 12 at intervals on the support plate 4, a buckle groove is formed on the support plate, so that when the support plate 4 is installed on the step 1, the fixed columns 12 on the support plate 4 are inserted into the groove, and the buckle groove can be buckled on the fixed columns 12 on the step 1, so that the support plate 4 and the step 1 are buckled into a whole through the fixed columns 12 inserted into the groove and the buckle groove, thereby improving their stability. At the same time, by using the structural design of the elastic layer 6, when the support plate 4 slides relative to the step 1, the fixed columns 12 can be affected by the elastic layer 6 to form a flexible structure, thereby enhancing the seismic resistance.

[0038] like Figure 5 As shown, in a certain embodiment, the flexible connection component has two parts, and the first part is: including a plurality of fastening members 10 fixedly provided on the end of the support plate 4 away from the step beam plate 2, which are used to stably connect the support plate 4 with the platform beam plate 3, and a flexible component groove 14 is provided on the platform beam plate 3 for installing flexible components, and a fastening column 7 matching the fastening member 10 is provided between the flexible component groove 14 and the ladder platform 1; a buckle hole 9 is provided on the buckle column 7, and the end of the fastening member 10 away from the support plate 4 can be inserted into the flexible component groove 14 from the buckle hole 9; an elastic member 11 is provided on the inner wall of the flexible component groove 14; one end of the elastic member 11 is detachably connected to the fastening member 10, and the other end of the elastic member 11 is integrally connected to the inner wall of the flexible component groove 14; a cover plate 8 is provided on the top of the flexible component groove 14. The second part is: a plurality of fixing columns 12 are vertically arranged downward on the lower surface of the support plate 4, and a buckle groove is formed between two adjacent fixing columns 12; a plurality of fixing columns 12 are vertically arranged upward on the upper surface of the step 1, and a groove is formed between two adjacent fixing columns 12; the fixing columns 12 on the support plate 4 can be inserted into the groove, and the fixing columns 12 on the step 1 can be inserted into the buckle groove. An elastic layer 6 is arranged in the groove, and an elastic layer 6 is arranged in the buckle groove. This greatly improves the stability of the connection between the support plate 4 and the step 1, while improving the flexibility of the interaction between the support plate 4 and the step 1, and improving the overall seismic resistance of the stairs.

[0039] like Figure 2and Figure 5 As shown, in some embodiments, the fastening member 10 is a screw rod, and a nut 13 is provided in the flexible component slot 14 to facilitate installation and connection.

[0040] In some embodiments, the fastening member 10 is integrally connected with the support plate 4. For example, the fastening member 10 is welded to the steel cage in the support plate 4 or tied to form a whole, and then cast and prefabricated. When the elastic member 11 is connected to the fastening member 10, welding, buckling, etc. can be used, as long as the elastic member 11 and the fastening member 10 can be connected together so that they form a mutual force.

[0041] In some embodiments, a positioning ring is provided at the connection between the elastic member 11 and the inner wall of the flexible component slot 14 for positioning the elastic member 11. The swing amplitude of the elastic member 11 is reduced to prevent it from slipping and making it difficult to achieve elastic action. In some embodiments, the positioning ring is integrally formed with the inner wall of the flexible component slot 14.

[0042] In some embodiments, the flexible component groove 14 is filled with buffer sand. This enhances stability and flexibility, prevents the fastening member 10 from interacting with the elastic member 11 at will, and improves stability. At the same time, combined with the function of the fastening column 7, the position is limited to enhance stability, while ensuring the purpose of flexible connection and improving earthquake resistance. Filling the buffer sand can also prevent the cover plate 8 from being stepped on, enhance stability and improve safety. The buffer sand can be river sand or the like.

[0043] In the invention, the installation between the step 5 and the upper surface of the step beam plate 2 includes but is not limited to integrally forming during prefabrication or detachably installing the step 5 on the step beam plate 2. The specific connection and construction of the step 5 and the step beam plate 2 can be achieved by referring to the prior art.

[0044] Other matters not covered in the invention can be implemented with reference to the prior art or common knowledge known to those skilled in the art, such as: prefabricating the step beam plate 2. The position of the platform beam plate 3 structure cast on the upper floor or the lower floor is determined; another example: how the step 5 and the step beam plate 2 are connected as a whole; another example: the elastic layer 6 introduced in the invention can be directly replaced by a rubber plate, and its thickness setting can be designed according to construction needs, such as: between 0.3-1cm; another example: the elastic member 11 in the invention uses a spring; another example: after the platform beam plate 3 and the step beam plate 2 are installed, the invention casts concrete on the platform beam plate 3 and the step beam plate 2, etc. The above is only a preferred specific implementation of the invention, but the protection scope of the invention is not limited thereto. Any technician familiar with the technical field within the technical scope disclosed by the invention, who makes equivalent replacement or changes according to the technical solution and the inventive concept of the invention, should be covered within the protection scope of the invention.

Claims

1. A prestressed assembled concrete staircase, comprising a step beam plate (2) and a platform beam plate (3), wherein the platform beam plate (3) is located at both ends of the step beam plate (2), and a plurality of steps (5) are provided on the inclined surface of the step beam plate (2), characterized in that: The two ends of the step beam plate (2) are integrally formed with support plates (4); the platform beam plate (3) is provided with a step platform (1) at one end close to the step beam plate (2), and the step platform (1) and the support plate (4) can be matched and installed; an elastic layer (6) is provided on the contact surface between the step platform (1) and the support plate (4); a flexible connection component is provided between the support plate (4) and the platform beam plate (3), and the flexible connection component can pass through the elastic layer (6); The flexible connection assembly comprises a plurality of fixing columns (12) vertically downwardly provided on the lower surface of the support plate (4), and a buckle groove is formed between two adjacent fixing columns (12); a plurality of fixing columns (12) vertically upwardly provided on the upper surface of the step platform (1), and a groove is formed between two adjacent fixing columns (12); the fixing columns (12) located on the support plate (4) can be inserted into the groove, and the fixing columns (12) located on the step platform (1) can be inserted into the buckle groove; and / or the flexible connection assembly comprises a plurality of fastening members (10) fixedly provided on one end of the support plate (4) away from the step beam plate (2), and a plurality of fastening members (10) are provided on the step beam plate (3). A flexible component groove (14) is provided, and a fastening column (7) matching the fastening member (10) is provided between the flexible component groove (14) and the ladder platform (1); a fastening hole (9) is provided on the fastening column (7), and the end of the fastening member (10) away from the support plate (4) can be inserted into the flexible component groove (14) from the fastening hole (9); an elastic member (11) is provided on the inner wall of the flexible component groove (14); one end of the elastic member (11) is detachably connected to the fastening member (10), and the other end of the elastic member (11) is integrally connected to the inner wall of the flexible component groove (14); a cover plate (8) is provided on the top of the flexible component groove (14).

2. The prestressed assembled concrete staircase according to claim 1, characterized in that: An elastic layer (6) is provided in the groove, and an elastic layer (6) is provided in the buckle groove.

3. The prestressed assembled concrete staircase according to claim 1, characterized in that: The fastening member (10) is a screw rod, and a nut (13) is provided in the flexible component groove (14).

4. The prestressed assembled concrete staircase according to claim 1 or 3, characterized in that: The fastening member (10) is integrally formed and connected to the support plate (4).

5. The prestressed assembled concrete staircase according to claim 1, characterized in that: The detachable connection is a hook-tight connection, a bolt-tight connection or a welding connection.

6. The prestressed assembled concrete staircase according to claim 1, characterized in that: A positioning ring for positioning the elastic member (11) is provided at the connection between the elastic member (11) and the inner wall of the flexible component groove (14).

7. The prestressed assembled concrete staircase according to claim 6, characterized in that: The positioning ring is integrally formed with the inner wall of the flexible component groove (14).

8. The prestressed assembled concrete staircase according to claim 1, 3, 6 or 7, characterized in that: The flexible component groove (14) is filled with buffer sand.

9. The prestressed assembled concrete staircase according to claim 1, characterized in that: The stair step (5) is integrally formed with the upper surface of the step beam plate (2).

Images