Prefabricated plate type stair and main body component connecting structure

Abstract

The utility model relates to the technical field of connection of prefabricated stair plates and main body components, and particularly discloses a connection structure of a prefabricated plate type stair and a main body component, which comprises a main body component and stair plates, and a reinforcement cage is arranged in the main body component; connecting pieces are arranged at the end parts of the stair plates; the connecting piece is connected with the reinforcement cage; and a fine aggregate concrete layer is poured in a gap between the main body component and the stair plate. Compared with the prior art, due to the arrangement of the reinforcement cage and the connecting piece, the firmness of connection is improved, the firmness of connection between the main body component and the stair plate is ensured, the dislocation of connection between the connecting piece and the reinforcement cage is reduced, a hole is prevented from being chiseled backwards, and the structural safety is ensured.

Description

Technical Field

[0001] The utility model relates to the technical field of connection between prefabricated stair slabs and main components, and particularly discloses a connection structure between a prefabricated plate-type staircase and a main component. Background Art

[0002] The connection between prefabricated stair slabs and main components is an important link in prefabricated buildings. The connection methods are diverse and must ensure the stability and safety of the structure.

[0003] The connection methods between prefabricated stair slabs and main components mainly include the following:

[0004] 1. Fixed support at one end and sliding support at the other end: This method allows the stair slab to have a certain degree of freedom when subjected to stress, thereby reducing stress concentration caused by temperature changes, material shrinkage, etc.

[0005] 2. Fixed hinge node at one end and sliding hinge node at the other end: This method combines the advantages of fixed support and sliding support, ensuring the stability of the stair slab while allowing it to move freely within a certain range;

[0006] 3. The method with fixed supports at both ends: This method firmly fixes both ends of the stair tread to the main component, which is suitable for occasions with high requirements on the position of the stair tread.

[0007] Among fixed connections at both ends, precast stair slabs are typically bolted to the main structure. However, embedded bolts and precast stair slabs are prone to misalignment, and holes for embedded bolts must be drilled later, compromising structural safety. Furthermore, simple bolt-to-concrete connections can easily slip over time, posing a safety hazard. Utility Model Content

[0008] In response to the above-mentioned deficiencies in the prior art, the present invention provides a connection structure between a prefabricated plate-type staircase and a main component to solve the problem that the embedded bolts and the prefabricated stair plates are easily misaligned, and holes for the embedded bolts need to be chiseled later, affecting the safety of the structure; at the same time, as the service life increases, the connection between the simple bolts and the concrete is prone to slippage, posing a safety hazard.

[0009] In order to achieve the above purpose, the technical solution of the utility model is:

[0010] A prefabricated slab staircase connecting the main structure includes a main structure and stair treads. A steel cage is positioned within the main structure; connectors are provided at the ends of the stair treads; the connectors connect to the steel cage; and a fine stone concrete layer is poured into the gap between the main structure and the stair treads. The steel cage and connectors enhance the connection strength, ensuring a secure connection between the main structure and the stair treads, minimizing misalignment between the connectors and the steel cage, avoiding the need for post-drilling holes, and ensuring structural safety.

[0011] Preferably, the connector includes a plurality of fixed steel bars and a plurality of connecting steel bars; the plurality of fixed steel bars extend along the width of the stair slab and are arranged inside the stair slab; the plurality of fixed steel bars are arranged at intervals and are parallel to each other; the plurality of connecting steel bars are arranged at intervals and are parallel to each other; the plurality of connecting steel bars extend in a horizontal direction perpendicular to the width of the stair slab; the end of each connecting steel bar is connected to the innermost fixed steel bar; and the end of each connecting steel bar away from the fixed steel bars is connected to the steel cage. The arrangement of the plurality of fixed steel bars ensures the secure arrangement of the plurality of connecting steel bars and the secure connection between the connector and the stair slab.

[0012] Preferably, both ends of the connecting steel bar are provided with folded edges, which further enhances the firmness of the connection between the connecting steel bar and the fixed steel bar and the steel cage.

[0013] Preferably, the reinforcement cage includes a plurality of U-shaped frames, spaced apart and parallel to each other, connected by transverse reinforcement bars, the transverse reinforcement bars being arranged at the inner upper edges of the U-shaped frames, and connecting reinforcement bars connecting the transverse reinforcement bars. The arrangement of the U-shaped frames and the transverse reinforcement bars ensures a secure connection between the reinforcement cage and the main member.

[0014] Preferably, the connecting steel bars and the fixed steel bars, and the connecting steel bars and the transverse steel bars are all connected by wire binding.

[0015] Preferably, the fine stone concrete layer is arranged at the end of the stair slab; the cross section of the fine stone concrete layer is arranged in an L shape.

[0016] The beneficial effects of the utility model are as follows: the arrangement of the steel cage and the connecting pieces increases the firmness of the connection, ensures the firmness of the connection between the main components and the stair slabs, reduces the misalignment of the connection between the connecting pieces and the steel cage, avoids the need for subsequent drilling, and ensures structural safety. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, for ordinary technicians in this field, other drawings can be obtained based on these drawings without any creative work.

[0018] Figure 1It is a structural diagram of the utility model;

[0019] Figure 2 This is a structural diagram of the stair treads and connecting parts of the utility model.

[0020] Description of reference numerals:

[0021] 1-main component, 2-stair slab, 3-reinforcement cage, 4-connector, 5-fine stone concrete layer;

[0022] 301-U-shaped frame, 302-transverse reinforcement; 401-fixed reinforcement, 402-connecting reinforcement. DETAILED DESCRIPTION

[0023] In order to enable those skilled in the art to better understand the technical solutions of the present invention, the following will be combined with the drawings of the embodiments of the present invention to clearly and completely describe the technical solutions of the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts should fall within the scope of protection of the present invention.

[0024] like Figure 1-2 The figure shows a precast slab staircase connecting a main structure, comprising a main structure 1 and stair treads 2. A steel cage 3 is positioned within the main structure 1. Connectors 4 are located at the ends of the stair treads 2, connecting the steel cage 3. A fine-stone concrete layer 5 is cast in the gap between the main structure 1 and the stair treads 2. The arrangement of the steel cage 3 and connectors 4 enhances the connection strength, ensuring a secure connection between the main structure 1 and the stair treads 2. This reduces misalignment between the connectors 4 and the steel cage 3, avoids post-drilling holes, and ensures structural safety. The fine-stone concrete layer 5 is positioned at the ends of the stair treads 2; its cross-section is L-shaped.

[0025] In the above arrangement, the connector 4 includes five fixed steel bars 401 and six connecting steel bars 402. The five fixed steel bars 401 extend along the width of the stair tread 2 and are arranged inside the stair tread 2. The five fixed steel bars 401 are spaced apart and parallel to each other. The six connecting steel bars 402 are spaced apart and parallel to each other. The six connecting steel bars 402 extend in a horizontal direction perpendicular to the width of the stair tread 2. The end of each connecting steel bar 402 is connected to the innermost fixed steel bar 401. The end of each connecting steel bar 402 away from the fixed steel bar 401 is connected to the steel cage 3. The arrangement of five fixed steel bars 401 ensures the secure arrangement of the six connecting steel bars 402 and the secure connection between the connector 4 and the stair tread 2. Both ends of the connecting steel bars 402 are provided with hems, further enhancing the secure connection between the connecting steel bars 402, the fixed steel bars 401, and the steel cage 3. The reinforcement cage 3 comprises several U-shaped frames 301, spaced apart and parallel to each other. These frames 301 are connected by transverse reinforcement bars 302, located along the inner upper edges of the U-shaped frames 301. Connecting bars 402 connect the transverse reinforcement bars 302. The U-shaped frames 301 and transverse reinforcement bars 302 ensure a secure connection between the reinforcement cage 3 and the main member 1. The number of connecting bars 402 and fixing bars 401 is calculated and determined based on strength requirements. The spacing between the fixing bars 401 is 100 mm.

[0026] The connecting steel bars 402 and the fixed steel bars 401 as well as the connecting steel bars 402 and the transverse steel bars 302 are connected by wire binding.

[0027] During construction, the connecting piece 4 is cast in advance in the stair slab 2. After the connecting piece 4 is connected to the steel cage 3, the steel cage 3 in the main component 1 is cast, and then the fine stone concrete layer 5 is cast.

[0028] Although the present invention has been described in detail with reference to the accompanying drawings and in conjunction with preferred embodiments, the present invention is not limited thereto. Without departing from the spirit and essence of the present invention, persons of ordinary skill in the art may make various equivalent modifications or substitutions to the embodiments of the present invention, and such modifications or substitutions shall be within the scope of the present invention. Any changes or substitutions that can be easily conceived by persons skilled in the art within the technical scope disclosed in the present invention shall be within the scope of protection of the present invention. Therefore, the scope of protection of the present invention shall be based on the scope of protection of the claims.

Claims

1. A connection structure between a prefabricated plate-type staircase and a main component, comprising a main component (1) and a staircase plate (2), characterized in that: A steel cage (3) is provided in the main component (1); a connecting piece (4) is provided at the end of the stair slab (2); the connecting piece (4) is connected to the steel cage (3); and a fine stone concrete layer (5) is poured in the gap between the main component (1) and the stair slab (2).

2. The connection structure between the prefabricated plate staircase and the main component according to claim 1 is characterized in that: The connecting member (4) comprises a plurality of fixed steel bars (401) and a plurality of connecting steel bars (402); the plurality of fixed steel bars (401) extend along the width direction of the stair slab (2) and are arranged inside the stair slab (2); the plurality of fixed steel bars (401) are arranged at intervals and are parallel to each other; the plurality of connecting steel bars (402) are arranged at intervals and are parallel to each other; the plurality of connecting steel bars (402) extend along a horizontal direction perpendicular to the width direction of the stair slab (2); the end of each connecting steel bar (402) is connected to the innermost fixed steel bar (401); and the end of each connecting steel bar (402) away from the fixed steel bar (401) is connected to the steel cage (3).

3. The connection structure between the prefabricated plate type staircase and the main component according to claim 2 is characterized in that: Both ends of the connecting steel bar (402) are provided with folded edges.

4. The connection structure between the prefabricated plate type staircase and the main component according to claim 3 is characterized in that: The steel cage (3) comprises a plurality of U-shaped frames (301); the plurality of U-shaped frames (301) are arranged at intervals and parallel to each other; the plurality of U-shaped frames (301) are connected by transverse steel bars (302); the transverse steel bars (302) are arranged at the inner upper edge of the U-shaped frames (301); and the connecting steel bars (402) are connected to the transverse steel bars (302).

5. The connection structure between the prefabricated plate type staircase and the main component according to claim 4, characterized in that: The connecting steel bars (402) and the fixed steel bars (401) as well as the connecting steel bars (402) and the transverse steel bars (302) are connected by wire binding.

6. The connection structure between the prefabricated plate staircase and the main component according to claim 1, characterized in that: The fine stone concrete layer (5) is arranged at the end of the stair slab (2); the cross section of the fine stone concrete layer (5) is arranged in an L-shape.

Images