Bracket structure of prefabricated scissor ladder supported by steel structure

Abstract

The utility model relates to a bracket structure of a prefabricated scissor ladder supported by a steel structure, which comprises a structural upright post, first structural beams and an X-shaped steel structure support, and the first structural beams on the upper and lower sides of the structural upright post are respectively and fixedly connected with a longitudinal second structural beam and a longitudinal third structural beam; stair wells are arranged on the upper structural plate and the lower structural plate, prefabricated scissor ladders which are staggered front and back are arranged in the stair wells, each prefabricated scissor ladder is composed of an upper ladder body and a lower ladder body which are arranged in an inclined mode, and the upper end of each upper ladder body is placed on the third structural beam and fixedly connected with the upper structural plate. The lower end of the upper ladder body and the upper end of the lower ladder body are placed on a longitudinal bracket beam and are fixedly connected with the bracket beam; and the lower end of the lower ladder body is placed on the second structural beam and is fixedly connected with the lower structural plate. According to the structure, the bracket columns and the bracket beams are additionally arranged to be matched with the steel structure supports to achieve supporting connection of the joints of the segmented prefabricated scissor ladders, and therefore the strength of the segmented prefabricated scissor ladders is guaranteed.

Description

Technical field:

[0001] The utility model relates to the technical field of building support structures, and more specifically to a corbel structure of a prefabricated scissor ladder supported by a steel structure. Background technology:

[0002] At present, in the process of building construction, prefabricated scissors ladders are used instead of cast-in-place scissors ladders to be set in the corridor to achieve passage between the upper and lower structural beams and slabs. The prefabricated scissors ladder can be directly installed during the construction process, and has many advantages compared with the cast-in-place scissors ladder. However, the spacing between the upper and lower structural beams and slabs of some buildings is relatively large, which leads to a large span of the entire prefabricated scissors ladder, and the probability of deformation and cracks in the whole prefabrication process is high; moreover, the weight of the whole prefabricated scissors ladder is increased, and high requirements are placed on the lifting equipment, which wastes materials; and then it is proposed to use a prefabricated scissors ladder with a segmented structure, dividing the whole prefabricated scissors ladder into two sections, thereby reducing the span of the prefabricated scissors ladder and reducing the probability of deformation and cracks; and it can reduce the high requirements for lifting equipment; and in the process of installing the segmented prefabricated scissors ladder, it is necessary to design a supporting structure for the connection between the segmented prefabricated scissors ladders. Utility model content:

[0003] The purpose of the utility model is to address the deficiencies of the prior art and to provide a corbel structure of a prefabricated scissors ladder supported by a steel structure, wherein additional corbel columns and corbel beams are provided to cooperate with the steel structure support to achieve support connection at the joints between the segmented prefabricated scissors ladders, thereby ensuring the strength of the segmented prefabricated scissors ladder.

[0004] A corbel structure of a prefabricated scissor ladder supported by a steel structure, comprising two vertical structural columns, a plurality of transverse first structural beams fixedly connected between the structural columns, an X-shaped steel structure support fixedly connected between the first structural beams, a longitudinal second structural beam and a third structural beam fixedly connected to the first structural beams on the upper and lower sides of the structural columns, respectively, the second structural beam and the third structural beam are respectively located at two ends of the first structural beam; a horizontal lower structural plate is fixedly connected to the second structural beam and the structural column, a horizontal upper structural plate is fixedly connected to the third structural beam and the structural column, both the upper structural plate and the lower structural plate are provided with a stairwell, a prefabricated scissor ladder staggered front and rear is provided in the stairwell, the prefabricated scissor ladder is composed of an oblique upper ladder body and a lower ladder body, the upper end of the upper ladder body is placed on the third structural beam and fixedly connected to the upper structural plate; the lower end of the upper ladder body and the upper end of the lower ladder body are placed on the longitudinal corbel beam and fixedly connected to the corbel beam; the lower end of the lower ladder body is placed on the second structural beam and fixedly connected to the lower structural plate;

[0005] One end of the corbel beam is fixedly connected to the vertical corbel column, and the other end is fixedly connected to the middle part of the steel structure support; the lower end of the corbel column is fixedly connected to the lower structure plate.

[0006] Preferably, the inclination directions of the prefabricated scissor ladders at the front and rear sides of the stairwell are opposite; and the upper ladder body and the lower ladder body of the prefabricated scissor ladder are both prefabricated stairs.

[0007] Preferably, the lower end of the upper ladder body and the upper end of the lower ladder body are abutted against each other; and steps are provided on the upper inclined surfaces of the upper ladder body and the lower ladder body.

[0008] Preferably, the corbel column abuts against the front end surface of the prefabricated scissors ladder on the front side of the stairwell.

[0009] Preferably, the corbel beam is made of reinforced concrete beam, which consists of a beam body and longitudinal steel corbels. The steel corbels are made of I-beams, which are embedded in the beam body. The rear end of the steel corbels extends out of the beam body and is welded and fixed to the middle part of the steel structure support. The corbel column is made of reinforced concrete column, and the steel bars at the upper end of the corbel column and the steel bars at the front end of the corbel beam are bundled together.

[0010] Preferably, the upper end surface of the upper step of the prefabricated scissors ladder is flush with the upper end surface of the upper structural plate, and the lower end surface of the lower step of the prefabricated scissors ladder is flush with the upper end surface of the lower structural plate.

[0011] The beneficial effects of the utility model are:

[0012] This structure adds corbel columns and corbel beams to cooperate with steel structure supports to achieve support connections at the joints between the segmented prefabricated scissors ladders, thereby ensuring the strength of the segmented prefabricated scissors ladders. Description of the drawings:

[0013] Figure 1 It is a three-dimensional structural schematic diagram of the utility model;

[0014] Figure 2 It is a structural schematic diagram of the utility model in a front view;

[0015] Figure 3 It is a front view schematic diagram of the utility model from the side;

[0016] Figure 4 It is a cross-sectional schematic diagram of the utility model in the front view direction.

[0017] In the figure: 1. structural column; 2. first structural beam; 3. steel structure support; 4. second structural beam; 5. third structural beam; 6. third structural beam; 7. upper structural plate; 8. prefabricated scissors ladder; 81. upper ladder body; 82. lower ladder body; 9. corbel beam; 10. corbel column. Specific implementation method:

[0018] Example: See Figures 1 to 4As shown, a corbel structure of a prefabricated scissor ladder supported by a steel structure comprises two vertical structural columns 1, a plurality of transverse first structural beams 2 are fixedly connected between the structural columns 1, an X-shaped steel structure support 3 is fixedly connected between the first structural beams 2, a longitudinal second structural beam 4 and a third structural beam 6 are fixedly connected to the first structural beams 2 on the upper and lower sides of the structural columns 1, respectively, and the second structural beam 4 and the third structural beam 6 are respectively located at the two ends of the first structural beam 2; a horizontal lower structural plate 5 is fixedly connected to the second structural beam 4 and the structural column 1, and the third structural beam 6 is fixedly connected to the second structural beam 4 and the structural column 1. A horizontal upper structural plate 7 is fixedly connected to the structural beam 6 and the structural column 1. Stairwells are provided on the upper structural plate 7 and the lower structural plate 5. A prefabricated scissor ladder 8 is arranged in the stairwell, which is staggered in front and back. The prefabricated scissor ladder 8 is composed of an oblique upper ladder body 81 and a lower ladder body 82. The upper end of the upper ladder body 81 is placed on the third structural beam 6 and is fixedly connected to the upper structural plate 7; the lower end of the upper ladder body 81 and the upper end of the lower ladder body 82 are placed on the longitudinal corbel beam 9 and are fixedly connected to the corbel beam 9; the lower end of the lower ladder body 82 is placed on the second structural beam 4 and is fixedly connected to the lower structural plate 5;

[0019] One end of the corbel beam 9 is fixedly connected to the vertical corbel column 10 , and the other end is fixedly connected to the middle of the steel structure support 3 ; the lower end of the corbel column 10 is fixedly connected to the lower structure plate 5 .

[0020] The inclination directions of the prefabricated scissor ladders 8 on the front and rear sides of the stairwell are opposite; the upper ladder body 81 and the lower ladder body 82 on the prefabricated scissor ladder 8 are both prefabricated stairs, and the upper ladder body 81 and the lower ladder body 82 can be installed with lifting ring structures, so that the upper ladder body 81 and the lower ladder body 82 can be installed by hoisting.

[0021] The lower end of the upper ladder body 81 and the upper end of the lower ladder body 82 are abutted against each other; steps are provided on the upper inclined surfaces of the upper ladder body 81 and the lower ladder body 82, and the lower surfaces of the upper ladder body 81 and the lower ladder body 82 are inclined surfaces. The lower surface of the lower end of the upper ladder body 81 and the lower surface of the upper end of the lower ladder body 82 are respectively provided with a pedestal opposite to the corbel beam 9, and the pedestal is connected to the corbel beam 9 by casting.

[0022] The corbel column 10 abuts against the front end surface of the prefabricated scissor ladder 8 at the front side of the stairwell.

[0023] The corbel beam 9 is made of reinforced concrete beam, which is composed of a beam body 92 and a longitudinal steel corbel 91. The steel corbel 91 is made of I-beam, which is embedded in the beam body 92. The rear end of the steel corbel 91 extends out of the beam body 92 and is welded and fixed to the middle part of the steel structure support 3; the corbel column 10 is made of reinforced concrete column, and the steel bars at the upper end of the corbel column 10 and the steel bars at the front end of the corbel beam 9 are bundled together.

[0024] The upper end surface of the upper step of the prefabricated scissors ladder 8 is flush with the upper end surface of the upper structural plate 7 , and the lower end surface of the lower step of the prefabricated scissors ladder 8 is flush with the upper end surface of the lower structural plate 5 .

[0025] Working principle: The utility model is a corbel structure of a prefabricated scissors ladder supported by a steel structure. The main body of the corbel structure is a steel structure support 3, a corbel column 10 and a corbel beam 9. The steel structure support 3 is a basic supporting structure on an existing building structure. In order to support the segmented structure of the prefabricated scissors ladder, a steel corbel 91 is welded and fixed in the middle of the steel structure support 3. The beam body 92 of the corbel beam 9 and the corbel column 10 can be cast on site, and the casting is also convenient. After the casting of the corbel beam 9 is completed, the hoisting of the segmented prefabricated scissors ladder 8 can be implemented (i.e., the upper ladder body 81 and the lower ladder body 82 are hoisted separately).

[0026] The embodiments are used to illustrate the present invention, but not to limit the present invention. Any person skilled in the art may modify the embodiments without violating the spirit and scope of the present invention, and therefore the scope of protection of the present invention shall be as set forth in the claims of the present invention.

Claims

1. A corbel structure of a prefabricated scissor ladder supported by a steel structure, comprising two vertical structural columns (1), a plurality of transverse first structural beams (2) are fixedly connected between the structural columns (1), an X-shaped steel structural support (3) is fixedly connected between the first structural beams (2), a longitudinal second structural beam (4) and a third structural beam (6) are fixedly connected to the first structural beams (2) on the upper and lower sides of the structural column (1), respectively, the second structural beam (4) and the third structural beam (6) are respectively located at the two ends of the first structural beam (2); a horizontal lower structural plate (5) is fixedly connected to the second structural beam (4) and the structural column (1), a horizontal upper structural plate (7) is fixedly connected to the third structural beam (6) and the structural column (1), and stairwells are provided on the upper structural plate (7) and the lower structural plate (5), characterized in that: A prefabricated scissor ladder (8) staggered in front and back is arranged in the stairwell. The prefabricated scissor ladder (8) consists of an obliquely placed upper ladder body (81) and a lower ladder body (82). The upper end of the upper ladder body (81) is placed on a third structural beam (6) and is fixedly connected to an upper structural plate (7); the lower end of the upper ladder body (81) and the upper end of the lower ladder body (82) are placed on a longitudinal corbel beam (9) and are fixedly connected to the corbel beam (9); the lower end of the lower ladder body (82) is placed on a second structural beam (4) and is fixedly connected to a lower structural plate (5); One end of the corbel beam (9) is fixedly connected to a vertical corbel column (10), and the other end is fixedly connected to the middle of the steel structure support (3); the lower end of the corbel column (10) is fixedly connected to the lower structure plate (5).

2. The bracket structure of a prefabricated scissors ladder supported by a steel structure according to claim 1, characterized in that: The inclination directions of the prefabricated scissor ladders (8) at the front and rear sides of the stairwell are opposite; the upper ladder body (81) and the lower ladder body (82) on the prefabricated scissor ladder (8) are both prefabricated stairs.

3. The bracket structure of a prefabricated scissors ladder supported by a steel structure according to claim 2, characterized in that: The lower end of the upper ladder body (81) and the upper end of the lower ladder body (82) are abutted against each other; steps are provided on the upper inclined surfaces of the upper ladder body (81) and the lower ladder body (82).

4. The bracket structure of a prefabricated scissor ladder supported by a steel structure according to claim 3, characterized in that: The corbel column (10) abuts against the front end surface of the prefabricated scissor ladder (8) on the front side of the stairwell.

5. The bracket structure of a prefabricated scissor ladder supported by a steel structure according to claim 1, characterized in that: The corbel beam (9) is a reinforced concrete beam, which is composed of a beam body and a longitudinal steel corbel. The steel corbel is an I-beam, which is embedded in the beam body. The rear end of the steel corbel extends out of the beam body and is welded and fixed to the middle of the steel structure support (3). The corbel column (10) is a reinforced concrete column, and the steel bars at the upper end of the corbel column (10) and the steel bars at the front end of the corbel beam (9) are bundled together.

6. The bracket structure of a prefabricated scissor ladder supported by a steel structure according to claim 2, characterized in that: The upper end surface of the upper step of the prefabricated scissors ladder (8) is flush with the upper end surface of the upper structural plate (7), and the lower end surface of the lower step of the prefabricated scissors ladder (8) is flush with the upper end surface of the lower structural plate (5).

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