Sectional type reinforced concrete assembly type stair hinged connection structure

Abstract

The utility model discloses a hinged connection structure of a sectional reinforced concrete assembly type stair. The hinged connection structure comprises a first sectional prefabricated stair flight plate and a second sectional prefabricated stair flight plate, a grouting groove is reserved in the first subsection prefabricated stair flight plate, and a bolt pin is pre-buried in the second subsection prefabricated stair flight plate; the bolt pins on the second subsection prefabricated stair flight plate are inserted into the grouting grooves in the first subsection prefabricated stair flight plate, and a concrete layer is poured in the grouting grooves. According to the utility model, the problem of difficulty in hoisting is solved, and meanwhile, the connecting effect at the structural joint is improved.

Description

Technical Field

[0001] The utility model relates to the field of building structures, and more specifically, to a segmented reinforced concrete assembled staircase hinged connection structure. Background Art

[0002] Under the background of the country's vigorous promotion of prefabricated buildings, prefabricated stairs in residential projects have the characteristics of high reuse efficiency, clear force, and convenient construction, and are promoted and used in many projects. However, the scissor stairs often used in residential projects have a large span and are much heavier than ordinary stairs. It is difficult for general hoisting equipment to meet the hoisting requirements of prefabricated large-span scissor stairs. This method is to split the stair section plate into sections along the span direction when the prefabricated components are split. This method not only meets the on-site construction hoisting requirements and reduces transportation difficulties, but also does not change the force mode of the stair treads. After the stair section plate is hoisted, pins are set at the joints of the stair treads, and grouting is performed to connect them. This method can not only solve the problems of on-site construction hoisting and transportation, but also solve the connection problem of the jointed stair treads after the hoisting is completed, and has great engineering promotion value. Utility Model Content

[0003] The utility model aims to provide a segmented reinforced concrete assembled staircase hinged connection structure, which solves the problem of difficult hoisting and improves the connection effect at the structural joint.

[0004] The technical solution adopted by the utility model to solve this technical problem is: a segmented reinforced concrete assembled staircase hinged connection structure, comprising a first segmented prefabricated staircase plate and a second segmented prefabricated staircase plate; a grouting groove is reserved on the first segmented prefabricated staircase plate, and a pin is pre-buried on the second segmented prefabricated staircase plate;

[0005] The pins on the second-segment prefabricated stair section plate are inserted into the grouting grooves on the first-segment prefabricated stair section plate, and the grouting grooves are filled with a concrete layer.

[0006] As a further solution of the utility model, a grouting material layer is formed by pouring the joint between the first prefabricated stair section plate and the second prefabricated stair section plate.

[0007] As a further solution of the utility model, the horizontal cross section of the grouting groove is trapezoidal, the vertical cross section of the grouting groove is rectangular, and the end of the grouting groove with a smaller opening faces outward.

[0008] As a further solution of the utility model, the diameter of the pin is 10 mm.

[0009] As a further solution of the utility model, the grouting groove is horizontally opened on the side of the first segmented prefabricated stair section plate for inserting the pin, a first opening is formed in the middle and upper part of the side opposite to the second segmented prefabricated stair section plate, a second opening is formed in the lower part of the side opposite to the second segmented prefabricated stair section plate, the first opening, the second opening and the grouting groove are connected to each other, and a concrete layer is poured in the first opening, the second opening and the grouting groove.

[0010] As a further solution of the utility model, a steel plate is pre-buried around the grouting groove of the first segmented prefabricated stair section plate, and the steel plate is welded and fixed to the steel bars of the first segmented prefabricated stair section plate before pouring concrete for the first segmented prefabricated stair section plate.

[0011] As a further solution of the utility model, the diameter of the pin is 24 mm.

[0012] The utility model includes at least the following beneficial effects: the connection structure of the present application adopts a combination of embedded pins, grouting grooves and concrete layers, which has a simple structure and is easy to operate. It not only solves the difficulty of lifting, but also adopts grouting technology to improve the connection effect at the structural joints, and overcomes the problem that the flexible joints are prone to aging and falling off in the later stage.

[0013] Other advantages, objectives and features of the present invention will be embodied in part through the following description, and in part will be understood by those skilled in the art through research and practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a top view of the hinged connection structure of the segmented reinforced concrete assembled staircase in Example 1 of the utility model;

[0015] Figure 2 This is a cross-sectional view of the hinged connection structure of the segmented reinforced concrete assembled staircase in Example 1 of the utility model;

[0016] Figure 3 It is a top view of the hinged connection structure of the segmented reinforced concrete assembled staircase in Example 2 of the utility model;

[0017] Figure 4 yes Figure 3 Middle CC section;

[0018] Figure 5 yes Figure 3 Middle BB cross-section.

[0019] In the figure: 1 grouting groove, 2 first segment prefabricated stair section plate, 3 second segment prefabricated stair section plate, 4 concrete layer, 5 pin, 6 first opening, 7 second opening, 8 steel plate, 9 joint seam. DETAILED DESCRIPTION

[0020] The utility model is described in detail and completely below in conjunction with the accompanying drawings. A person of ordinary skill in the art will be able to implement the utility model based on these descriptions. Before describing the utility model in conjunction with the accompanying drawings, it should be particularly pointed out that the technical solutions and technical features provided in each part of the utility model, including the following description, can be combined with each other without conflict.

[0021] In addition, the embodiments of the present invention involved in the following description are generally only a part of the embodiments of the present invention, rather than all of the embodiments. Therefore, based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work should fall within the scope of protection of the present invention.

[0022] Example 1

[0023] A segmented reinforced concrete assembled staircase hinged connection structure comprises a first segmented prefabricated stair section plate 2 and a second segmented prefabricated stair section plate 3; a grouting groove 1 is reserved on the first segmented prefabricated stair section plate 2, and a pin 5 is embedded on the second segmented prefabricated stair section plate 3; the diameter of the pin 5 is 10 mm.

[0024] The pin 5 on the second-segment prefabricated stair section plate 3 is inserted into the grouting groove 1 on the first-segment prefabricated stair section plate 2 , and the grouting groove 1 is filled with a concrete layer 4 .

[0025] The joints of the first prefabricated stair section plate 2 and the second prefabricated stair section plate 3 are grouted to form a grouting material layer. The horizontal section of the grouting groove 1 is a trapezoid, the vertical section of the grouting groove 1 is a rectangle, and the smaller end of the grouting groove 1 faces outward.

[0026] Example 2

[0027] A segmented reinforced concrete assembled staircase hinged connection structure, comprising a first segmented prefabricated staircase plate 2 and a second segmented prefabricated staircase plate 3; a grouting groove 1 is reserved on the first segmented prefabricated staircase plate 2, and a pin 5 is embedded on the second segmented prefabricated staircase plate 3; the diameter of the pin 5 is 24 mm. The pin 5 on the second segmented prefabricated staircase plate 3 is inserted into the grouting groove 1 on the first segmented prefabricated staircase plate 2, and the grouting groove 1 is filled with a concrete layer 4.

[0028] The grouting groove 1 is horizontally opened on the side of the first segmented prefabricated stair section plate 2 for inserting the pin 5. A first opening 6 is formed in the middle and upper part of the side opposite to the second segmented prefabricated stair section plate 3 of the first segmented prefabricated stair section plate 2, and a second opening 7 is formed in the lower part of the side opposite to the second segmented prefabricated stair section plate 3 of the first segmented prefabricated stair section plate 2. The first opening 6, the second opening 7 and the grouting groove 1 are connected to each other. The size of the grouting groove 1 is slightly larger than that of the pin 5. In this embodiment, the first opening 6, the second opening 7 and the grouting groove 1 are filled with a concrete layer 4 that is one grade higher than that of the first segmented prefabricated stair section plate 2 and the second segmented prefabricated stair section plate 3. When grouting, the grouting is poured from the first opening 6, and the slurry automatically flows into the grouting groove 1 and the second opening 7. After the second opening 7 is filled, it can be scraped flat by a scraper. A steel plate 8 is pre-buried around the grouting groove 1 of the first segmented prefabricated stair section slab 2. The steel plate 8 is welded and fixed to the steel bars of the first segmented prefabricated stair section slab 2 before concrete is poured on the first segmented prefabricated stair section slab 2. The steel plate 8 is provided to increase the stress around the first opening 6 and the second opening 7 to prevent the concrete from breaking there.

[0029] Although the implementation scheme of the utility model has been disclosed as above, it is not limited to the applications listed in the specification and implementation scheme. It can be fully applied to various fields suitable for the utility model. For those familiar with the art, additional modifications can be easily implemented. Therefore, without departing from the general concept defined by the claims and the scope of equivalents, the utility model is not limited to the specific details and the embodiments shown and described herein.

Claims

1. A segmented reinforced concrete assembled staircase hinged connection structure, characterized in that: It comprises a first segmented prefabricated stair section plate and a second segmented prefabricated stair section plate; a grouting groove is reserved on the first segmented prefabricated stair section plate, and a pin is embedded in the second segmented prefabricated stair section plate; The pins on the second-segment prefabricated stair section plate are inserted into the grouting grooves on the first-segment prefabricated stair section plate, and a concrete layer is poured in the grouting grooves.

2. The segmented reinforced concrete assembled staircase hinged connection structure according to claim 1, characterized in that: The joints of the first segmented prefabricated stair section slab and the second segmented prefabricated stair section slab are grouted to form a grouting material layer.

3. The segmented reinforced concrete assembled staircase hinged connection structure according to claim 1 or 2, characterized in that: The horizontal cross section of the grouting groove is a trapezoid, the vertical cross section of the grouting groove is a rectangle, and the end of the grouting groove with a smaller opening faces outward.

4. The segmented reinforced concrete assembled staircase hinged connection structure as claimed in claim 3, characterized in that: The diameter of the pin is 10 mm.

5. The segmented reinforced concrete assembled staircase hinged connection structure according to claim 1, characterized in that: The grouting groove is horizontally opened on the side of the first segmented prefabricated stair section plate for inserting the pin, a first opening is formed in the middle and upper part of the side opposite to the second segmented prefabricated stair section plate, a second opening is formed in the lower part of the side opposite to the second segmented prefabricated stair section plate, the first opening, the second opening and the grouting groove are connected to each other, and a concrete layer is poured in the first opening, the second opening and the grouting groove.

6. The segmented reinforced concrete assembled staircase hinged connection structure as claimed in claim 5, characterized in that: A steel plate is pre-buried around the grouting groove in the first segment prefabricated stair section plate.

7. The segmented reinforced concrete assembled staircase hinged connection structure as claimed in claim 5, characterized in that: The diameter of the pin is 24 mm.

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