CN212671052U

CN212671052U - Take prefabricated assembled concrete stair of shear pin

Info

Publication number: CN212671052U
Application number: CN202020411375.8U
Authority: CN
Inventors: 叶思伟; 王耀东; 杨浩东; 姚燕
Original assignee: Nanjing Dadi Construction Technology Co ltd
Current assignee: Nanjing Dadi Construction Technology Co ltd
Priority date: 2020-03-26
Filing date: 2020-03-26
Publication date: 2021-03-09
Anticipated expiration: 2030-03-26

Abstract

The utility model relates to a take prefabricated assembled concrete stair of shear pin, main design does: the prefabricated concrete stair with the shear pins is installed on a stair beam of a stair rest platform, the stair and the stair beam are connected through the vertical shear pins, and the shear pins are connected with the stair beam through on-site cast-in-place. The rigid connection between the precast concrete stair boards and the stairwell can be realized through the connection, and the idea of the integrity of the stairwell is realized.

Description

Take prefabricated assembled concrete stair of shear pin

Technical Field

The utility model relates to a concrete stair, particularly a take prefabricated assembled concrete stair of shear pin belongs to building stair design field.

Background

With the gradual advocation of the building industrialization by the nation, the building site adopts an assembly type. The fabricated components are all fabricated in the factory. Prefabricated assembled stair belong to assembled component. The mainstream method in the market at present is as follows: the prefabricated staircases are all characterized in that the end parts of the prefabricated staircases do not extend out of the steel bars, and the staircase components are directly connected with the rest platform plates in an overlapping mode. The earthquake-proof and fortifying stairwell is completely reliable without the action of earthquake effect, however, China is a country with earthquake-proof and fortifying intensity, and the stairwell needs to be guaranteed to have certain integrity. After all, the earthquake effect is that longitudinal waves and transverse waves exist simultaneously, and if the integrity is not considered, the staircase can be damaged by carelessness under the action of the earthquake effect, so that the escape of residents in the building cannot be guaranteed. Accordingly, a prefabricated concrete stair component with shear pins is provided.

SUMMERY OF THE UTILITY MODEL

The utility model provides a technical problem that solve provides a take prefabricated assembled concrete stair of shear pin, the stair component is accomplished in the preparation of mill's workshop mould, and the mould can open and shut the assembly mould for the metal, during the preparation, sets up the mould at the workshop scene, puts into the mould with the steel reinforcement cage, then concretes. And the components can be installed on site after being formed and transported to the site.

The patent of the utility model discloses a realize through following technical scheme: in order to achieve the above object, the utility model provides a take prefabricated assembled concrete stair of shear pin erects on the ladder roof beam on upper and lower floor, including rest platform upper end connecting plate, stair section board, rest platform lower extreme connecting plate, rest platform upper end connecting plate, stair section board, rest platform lower extreme connecting plate are a complete concrete structure body, its characterized in that: the upper surface of the ladder beam is provided with a crossbeam extending reinforcing bar, the upper end connecting plate of the rest platform and the lower end connecting plate of the rest platform are respectively provided with an adaptation, the crossbeam extends out of a shear pin hole of the reinforcing bar, when the upper end connecting plate of the rest platform and the lower end connecting plate of the rest platform are respectively placed on the ladder beam of an upper floor and a lower floor, the ladder beam extends out of the reinforcing bar and is inserted into the shear pin hole, and concrete is poured into holes between the shear pin hole and the holes to form a shear pin, the precast concrete stair with the shear pin is combined into a Z shape with the upper end connecting plate of the rest platform and the lower end connecting plate of the rest platform, the upper end connecting plate of the rest platform and the lower end connecting plate of the rest platform are respectively located at the end and the end tail of the precast.

Rest platform upper end connecting plate all contains the shear hole round pin with rest platform lower extreme connecting plate, and each end all is equipped with two cylindricalls and runs through cavity shear hole round pin, can be as whole with staircase ladder beam rigid connection.

The utility model discloses the technical scheme who further injects does:

furthermore, the shear pin hole is in an inverted frustum shape, and the height of the shear pin hole is larger than the length of the beam extending out of the steel bar.

Further, a small amount of mortar is poured into the top of the shear pin to reach the opening of the shear pin.

Furthermore, the stair tread mainly comprises stair steps, and a step anti-slip strip is pre-embedded on each stair step. The tread antislip strip is embedded and fixed on the stair tread.

Furthermore, hoisting embedded parts are embedded in the two sides and/or the middle of the stair step plate.

The utility model has the advantages that: the prefabricated concrete stair with the shear pins is installed on a stair beam of a stair rest platform, the stair and the stair beam are connected through the vertical shear pins, and the shear pins are connected with the stair beam through on-site cast-in-place. The rigid connection between the precast concrete stair boards and the stairwell can be realized through the connection, and the idea of the integrity of the stairwell is realized.

Drawings

FIG. 1 is a general schematic view of the present invention;

FIG. 2 is a schematic structural diagram of a building body;

FIG. 3 is a top view of FIG. 2;

FIG. 4 is a bottom view of FIG. 2;

FIG. 5 is a side view of FIG. 2;

figure 6 is a schematic diagram of the composition of the shear pin.

Detailed Description

In order to make the utility model discloses technical means, creation characteristic, achievement purpose and efficiency that realize are easily known, now combine the figure to further explain the utility model discloses how the patent is implemented:

the prefabricated assembled concrete stair with the shear pins disclosed by the embodiment is composed of a connecting plate at the upper end of a 01 rest platform, a 02 stair step plate, a connecting plate at the lower end of a 03 rest platform, shear pin holes 04, stair steps 05, antiskid strips 06, shear pins 07, extension reinforcing steel bars 08 for a stair beam, a 09 lifting piece and a 10 stair beam. 8 parts. As shown in fig. 1.

2. 04 the shear pin hole is a cylindrical through hollow structure as shown in fig. 4, which ensures that the prefabricated staircase and the ladder beam can be rigidly connected through the shear pin hole.

07 the shear pins and 04 shear pin holes are connected through post-cast concrete pouring, so that the integrity of the stair structure is ensured.

07 the shear pins are formed by casting concrete by extending 08 ladder beams out of reinforcing steel bars, and the integrity of the stair structure is ensured by the reinforced concrete structure.

01 half space upper end connecting plate and 10 terraced roof beams pass through 07 anti-shear pin joint, 03 half space lower extreme connecting plate and 10 terraced roof beams pass through 07 anti-shear pin joint, 07 anti-shear pin stretches out the reinforcing bar by 08 terraced roof beams and accomplishes according to 04 shear pin hole concreting preparation, 06 the antislip strip of marking time inlays on 05 stair steps, 01 half space upper end connecting plate, 02 stair bench board, 03 half space upper end connecting plate, 05 stair steps, 06 the antislip strip of marking time is a complete prefabricated integral structure, 09 the piece of lifting by crane is pre-buried in the both sides of 02 stair bench board.

The prefabricated concrete staircases and the ladder beams can form a complete structural body through the connection, and the concept of the integrity of the staircases is realized.

3. When the prefabricated staircase is installed, a 09 hoisting piece is hooked by a hoisting hook to hoist the staircase to an installation place, the staircase is correspondingly connected with 08 staircase beam extension steel bars on 10 staircase beams through 04 shear pin holes, concrete in the 04 shear pin holes is poured to form 07 shear pins after the prefabricated staircase is installed, and the hoisting hook is removed to finish the installation of the prefabricated staircase.

4. The prefabricated staircase is rigidly connected with the staircase through the shear pin, so that the integrity of the staircase is greatly improved.

The foregoing descriptions of specific exemplary embodiments of the present invention have been presented for purposes of illustration and description. It is not intended to limit the invention to the precise form disclosed, and obviously many modifications and variations are possible in light of the above teaching. The exemplary embodiments were chosen and described in order to explain certain principles of the invention and its practical application to enable one skilled in the art to make and use various exemplary embodiments of the invention and various alternatives and modifications as are suited to the particular use contemplated. It is intended that the scope of the invention be defined by the claims and their equivalents.

Compared with the prior art, the utility model discloses following beneficial effect has: the equipment has the advantages of simple structure, pure metal frame structure, firmness and durability, and the design is very suitable for production guidance and use of construction sites.

Claims

1. The utility model provides a take prefabricated assembled concrete stair of shear pin erects on the ladder roof beam on upper and lower floor, includes half space upper end connecting plate, stair section board, half space lower extreme connecting plate, and half space upper end connecting plate, stair section board, half space lower extreme connecting plate are a complete concrete structure body, its characterized in that: the ladder roof beam upper surface is equipped with the crossbeam and stretches out the reinforcing bar, all is equipped with the adaptation on half space upper end connecting plate and the half space lower extreme connecting plate the crossbeam stretches out the pinhole that shears of reinforcing bar, and when half space upper end connecting plate, half space lower extreme connecting plate were put respectively on the ladder roof beam of supreme, lower floor, the ladder roof beam stretches out the reinforcing bar and inserts the pinhole that shears, pours into the concrete in the hole between the two and forms the anti-shear pin.

2. The prefabricated assembled concrete stairway with shear pins according to claim 1, wherein: the shear pin hole is in an inverted frustum shape, and the height of the shear pin hole is larger than the length of the beam extending out of the steel bar.

3. The prefabricated assembled concrete stairway with shear pins according to claim 2, wherein: and pouring a small amount of mortar into the top of the shear pin to the orifice of the shear pin.

4. The prefabricated assembled concrete stairway with shear pins according to claim 1, wherein: the stair tread mainly comprises stair steps, and a step anti-slip strip is pre-embedded on each stair step.

5. The prefabricated assembled concrete stairway with shear pins according to claim 1 or 4, wherein: and hoisting embedded parts are embedded in the two sides and/or the middle of the stair tread.