CN215716682U

CN215716682U - Prefabricated stair mosaic structure of assembly type structure

Info

Publication number: CN215716682U
Application number: CN202120337202.0U
Authority: CN
Inventors: 袁誉平; 黄东; 贺楠楠; 杨海涛; 赵幸
Original assignee: China Gezhouba Group Construction Engineering Co ltd
Current assignee: China Gezhouba Group Construction Engineering Co ltd
Priority date: 2021-02-06
Filing date: 2021-02-06
Publication date: 2022-02-01
Anticipated expiration: 2031-02-06

Abstract

A prefabricated staircase splicing structure for an assembly type building comprises a prefabricated staircase left half part and a prefabricated staircase right half part; the prefabricated staircase comprises a left half part and a right half part, wherein the upper end of one side of the left half part of the prefabricated staircase is provided with an upper rabbet, the lower end of the left half part of the prefabricated staircase is provided with a first pressing groove, the upper end of one side of the right half part of the prefabricated staircase is provided with a lower rabbet, the lower end of the left half part of the prefabricated staircase is provided with a second pressing groove, a gap is reserved between the upper rabbet and the lower rabbet after the left half part of the prefabricated staircase and the right half part of the prefabricated staircase are spliced, a prefabricated staircase plate surface seam is filled in the gap, and a prefabricated staircase plate bottom seam is filled in the first pressing groove and the second pressing groove. The prefabricated staircase splicing structure for the fabricated building provided by the utility model divides the prefabricated staircase into two parts, and reduces the hoisting risk.

Description

Prefabricated stair mosaic structure of assembly type structure

Technical Field

The utility model relates to a stair, in particular to a prefabricated stair splicing structure for an assembly type building.

Background

When the assembly type prefabrication construction method is adopted for high-rise and super high-rise buildings, the stairs in the form of scissors are usually designed in the high-rise and super high-rise buildings to serve as double evacuation channels during fire emergency, the span of a single stair board is large, the board thickness is thick, when factory prefabrication is adopted, the weight of a single precast concrete component is over 5 tons, when the component is installed on site, the heavy component is hoisted to the floor, a heavy tower crane is needed, and the safety risk of hoisting construction is higher. The cost of the heavy tower crane is doubled or even more than the rent cost of the light tower crane, which is not beneficial to reducing the cost and reducing the installation risk of hoisting the components, but at present, no method with low cost and more safety is available.

Disclosure of Invention

The utility model aims to solve the technical problem of providing a prefabricated staircase splicing structure for an assembly type building, which can eliminate the adverse effect caused by overweight of a single prefabricated part when a high-rise staircase and a super high-rise staircase in a scissor mode are prefabricated and manufactured in a factory, ensure the attractive appearance of the staircase, facilitate construction and have no influence on the structure.

In order to solve the technical problems, the technical scheme adopted by the utility model is as follows:

a prefabricated staircase splicing structure for an assembly type building comprises a prefabricated staircase left half part and a prefabricated staircase right half part; the prefabricated staircase comprises a left half part and a right half part, wherein the upper end of one side of the left half part of the prefabricated staircase is provided with an upper rabbet, the lower end of the left half part of the prefabricated staircase is provided with a first pressing groove, the upper end of one side of the right half part of the prefabricated staircase is provided with a lower rabbet, the lower end of the left half part of the prefabricated staircase is provided with a second pressing groove, a gap is reserved between the upper rabbet and the lower rabbet after the left half part of the prefabricated staircase and the right half part of the prefabricated staircase are spliced, a prefabricated staircase plate surface seam is filled in the gap, and a prefabricated staircase plate bottom seam is filled in the first pressing groove and the second pressing groove.

Prefabricated stair face crack filling includes from down up polyphenyl filling layer, PE stick and the sealant layer of arranging in proper order.

The prefabricated staircase plate bottom crack repairing comprises an anti-crack mortar layer, and grooves formed by the first pressure groove and the second pressure groove are filled with the anti-crack mortar layer.

An anti-cracking net is hung in the groove and is wrapped by an anti-cracking mortar layer.

The prefabricated staircase splicing structure for the fabricated building has the following technical effects:

1) the prefabricated staircase is split and generated, the weight of a single prefabricated part is reduced, the prefabricated part is hoisted in place and then spliced and combined, and then the seam is repaired. Therefore, the weight of a single component is reduced, the risk of high-altitude hoisting is reduced, the hoisting specification of a tower crane is also reduced, the engineering cost is directly reduced, and the method has important value for the hoisting construction of the prefabricated scissor ladder of high-rise and super high-rise assembly type buildings.

2) After the prefabricated staircase is split, the upper and lower grooves are arranged to prevent the two split staircases from forming a through seam, the groove seams on the board surface are sealed by adopting polyphenyl plates, PE rods and structural sealant, the elastic material joint filling can effectively solve the problem that the grooves and the seams between the two split staircases crack due to the displacement of a main structure (within a design allowable range), and meanwhile, the elastic material joint filling has a certain buffering effect on the prefabricated staircase under the action of earthquake, so that the concrete edge at the gap of the board surface of the prefabricated staircase is not easy to damage; the board bottom gap adopts two blocks of stair board bottom both sides to set up indent (10 mm is dark) to adopt and hang fine cloth of glass and the compaction of floating of resistance to compression mortar, flush with the prefabricated stair bottom plate of both sides, this kind of processing lets prefabricated stair board bottom lead to long crack no longer to exist, has both solved the pleasing to the eye problem of stair board basal surface, has also solved the problem of stair board bottom gap ash that falls.

Drawings

The utility model is further illustrated by the following examples in conjunction with the accompanying drawings:

fig. 1 is a sectional view of the left half of the prefabricated staircase according to the present invention.

Fig. 2 is a sectional view of the right half of the prefabricated staircase according to the present invention.

Fig. 3 is a cross-sectional view of the present invention.

FIG. 4 is a cross-sectional side view of a splice joint patch of the present invention.

Fig. 5 is a top view of the present invention.

In the figure: the prefabricated staircase comprises a left prefabricated staircase half part 1, a right prefabricated staircase half part 2, a polyphenyl filling layer 3, a PE rod 4, a sealant layer 5, an anti-cracking net 6, an anti-cracking mortar layer 7, an upper rabbet 8, a first pressure groove 9, a lower rabbet 10 and a second pressure groove 11.

Detailed Description

As shown in fig. 1-5, a prefabricated staircase splicing structure for prefabricated buildings comprises a prefabricated staircase left half part 1 and a prefabricated staircase right half part 2.

When the left prefabricated staircase half part 1 and the right prefabricated staircase half part 2 are installed, the two plates are combined together, the side surface of the joint is a tongue-and-groove joint, the edge of the tongue-and-groove joint is reinforced by a configuration reinforcing steel bar, the bottom surface of each plate at the joint is subjected to groove pressing during prefabrication, and the groove pressing size is 10mmx100 mm.

The slab face joint filling mode adopts polyphenyl to fill joints from slab face gaps downwards, the gaps are filled till the gaps are 60mm away from concrete faces (indicating the upper surfaces and the side faces of the concrete steps), then the PE rods 4 are plugged, the diameter of each PE rod 4 is about 30mm, the distance from the upper surface of each PE rod 4 to the concrete faces (indicating the upper surfaces and the side faces of the concrete steps) is about 30mm, finally silica gel with the same color as the concrete is poured on the PE rods, and the surfaces of the silica gel are flush with the concrete faces (indicating the upper surfaces and the side faces of the concrete steps) on two sides of the gaps.

The crack-resistant net 6 is hung in the groove of the board bottom, the crack-resistant net 6 is nailed on the concrete surface in the groove through steel nails, and then the crack-resistant mortar is smeared until the crack-resistant net is flush with the concrete surfaces of the two side board bottoms.

The working process and principle are as follows:

1) installing a left half part 1 of the prefabricated staircase;

2) installing the right half part 2 of the prefabricated staircase;

3) filling the gap on the plate surface by adopting polyphenyl; the surface of the plate is filled with the PE rod 4, and the outer surface of the PE rod is about 30mm away from the concrete surface; leveling the board surface by injecting a sealing adhesive layer 5, wherein the thickness of the injected sealing adhesive is about 30mm, and the surface is level with the concrete surfaces at two sides;

6) performing plate bottom joint filling, and hanging an anti-cracking net 6 in the groove; the groove at the bottom of the plate is plastered by an anti-crack mortar layer 7 until the surface is flush with the concrete surfaces at the two sides.

Claims

1. The utility model provides a prefabricated stair mosaic structure of prefabricated building which characterized in that: the prefabricated staircase comprises a prefabricated staircase left half part (1) and a prefabricated staircase right half part (2); the prefabricated staircase comprises a prefabricated staircase body (1), a prefabricated staircase board, prefabricated staircase, a prefabricated staircase, prefabricated staircase board, prefabricated staircase board, a prefabricated staircase board, prefabricated staircase board, prefabricated staircase board, prefabricated staircase board, prefabricated staircase board.

2. The prefabricated staircase splicing structure of the fabricated building of claim 1, wherein: prefabricated staircase face crack filling includes from down to up arranging polyphenyl filling layer (3), PE stick (4) and sealant layer (5) in proper order.

3. The prefabricated staircase splicing structure of the fabricated building of claim 1, wherein: the prefabricated stair plate bottom crack repairing structure is characterized in that the prefabricated stair plate bottom crack repairing structure comprises an anti-crack mortar layer (7), and grooves formed by a first pressing groove (9) and a second pressing groove (11) are filled with the anti-crack mortar layer (7).

4. The prefabricated staircase splicing structure of claim 3, wherein: an anti-cracking net (6) is hung in the groove, and the anti-cracking net (6) is wrapped by an anti-cracking mortar layer (7).