CN220058609U - Connection structure of prefabricated staircase - Google Patents

Abstract

The utility model discloses a connecting structure of a prefabricated staircase, which comprises the following components: the device comprises a prefabricated staircase, a mounting support and a grouting structure, wherein mounting hole structures are formed at two ends of the prefabricated staircase; the number of the mounting supports is at least two; the mounting support comprises a supporting structure and a mounting structure, one side of the supporting structure is connected with the mounting structure, and the other side of the supporting structure is suitable for being connected with a floor slab; one end of the mounting structure, which is far away from the supporting structure, is inserted into the mounting hole structure; the grouting structure is arranged between the prefabricated staircase and the supporting structure and between the mounting structure and the mounting hole structure. The structure is provided with the grouting structure, so that the gap between the prefabricated stair support and the steel ladder beam is filled with grouting materials compactly, gaps can not appear, and the construction quality is ensured.

Description

Connection structure of prefabricated staircase

Technical Field

The utility model relates to the technical field of installation of prefabricated stairways, in particular to a connecting structure of the prefabricated stairways.

Background

The steel structure has the advantages of light weight, high strength, good earthquake resistance, environmental protection and the like, so that the steel structure is used as a main body structure and is increasingly widely applied to assembled houses.

At present, the type and the problems of the stairs of the assembled steel structure house are as follows. Firstly, adopt steel stair, its main problem is: the steel consumption is large and the cost is high; if the rust-proof treatment is not good, the rust is easy to rust, and the stress of the structure is influenced; the surface of the steel stair needs to be decorated, and the decoration method is complex; the platform plate is generally made of patterned steel plates, is easy to deform, has poor flatness and is high in correction difficulty. Secondly, cast-in-situ reinforced concrete stairway is adopted, and the main problems are as follows: the formwork is supported, the steel bars are bound, concrete is poured and maintained on site, the working procedures are numerous, and the construction period is long; not calculating the assembly rate; the lagging steel structure is more in construction and cannot be quickly used as a vertical passage for people to go up and down; the molding effect is poor, and a decorative surface layer is needed. Thirdly, adopt prefabricated stair, its main problem is: because of the precision deviation of the manufacture and the installation of the prefabricated staircase and the steel ladder beam, the prefabricated staircase support seat and the steel ladder beam cannot be tightly attached.

Years of project practice cases prove that the prefabricated staircase is more matched with the fabricated steel structure house. Firstly, the prefabricated stairway is manufactured by adopting a factory and installed on site, so that the industrialization degree is high, and the assembly rate can be calculated; secondly, the prefabricated stairway can be quickly inserted and installed after a stable frame is formed by installing steel columns and steel beams, and is used as a vertical passage for personnel to go up and down; thirdly, the prefabricated staircase is a finished component, and no decorative layer is needed.

However, when the prefabricated staircase is installed, due to the prefabrication error and the installation error, the problem that the prefabricated staircase support and the steel ladder beam cannot be tightly attached to each other inevitably occurs, and the application quality of the prefabricated staircase in the assembled steel structure house can be affected.

Disclosure of Invention

Therefore, the technical problem to be solved by the utility model is that when the prefabricated staircase is installed, the problem that the prefabricated staircase support seat and the steel ladder beam cannot be tightly attached to each other inevitably occurs due to the prefabrication error and the installation error, and the application quality of the prefabricated staircase in the assembled steel structure house can be influenced.

To this end, the present utility model provides a connection structure of a prefabricated staircase, comprising:

the prefabricated stairway is characterized in that mounting hole structures are formed at two ends of the prefabricated stairway;

the system comprises at least two mounting supports, wherein each mounting support comprises a supporting structure and a mounting structure, one side of each supporting structure is connected with each mounting structure, and the other side of each supporting structure is suitable for being connected with a floor slab; one end of the mounting structure, which is far away from the supporting structure, is inserted into the mounting hole structure;

the novel prefabricated stairway comprises a support structure, and is characterized by further comprising a grouting structure, wherein the grouting structure is arranged between the prefabricated stairway and the support structure and between the mounting structure and the mounting hole structure.

Optionally, the mounting hole structure includes a first mounting hole and a second mounting hole;

the mounting structure comprises a first mounting piece and a second mounting piece; the first mounting piece is inserted into the first mounting hole; the second mounting piece is inserted into the second mounting hole;

the grouting structure comprises a first grouting layer and a second grouting layer; the first grouting layer is arranged between the prefabricated staircase and the supporting structure; the second grouting layer is arranged between the first mounting piece and the first mounting hole.

Optionally, the first mounting hole and the second mounting hole gradually decrease in diameter from an end far from the support structure to an end near the support structure.

Optionally, the above-mentioned device further includes a first blocking layer, where the first blocking layer is disposed in the first mounting hole, and the first blocking layer is disposed on a side of the second grouting layer away from the first grouting layer.

Optionally, the above-mentioned further includes a spacer and a second blocking layer; the gasket is sleeved at one end of the second mounting piece far away from the supporting structure; the second blocking layer is arranged in the second mounting hole, and the second blocking layer is arranged on one side of the gasket away from the supporting structure;

the gasket, the first grouting layer, the second mounting piece and the prefabricated staircase jointly enclose a movable cavity.

Optionally, the above-mentioned system further includes a third blocking layer, where the third blocking layer is disposed between the prefabricated staircase and the supporting structure, and the third blocking layer is disposed outside the first grouting layer.

Optionally, the above-mentioned method further comprises a leveling layer, wherein the leveling layer is arranged between the prefabricated staircase and the supporting structure.

Optionally, the support structure includes a first steel ladder beam and a second steel ladder beam; the first steel ladder beam is connected with the first mounting piece, and the central axis of the first steel ladder beam coincides with the axis of the first mounting piece;

the second steel ladder beam is connected with the second mounting piece, and the central axis of the second steel ladder beam coincides with the axis of the second mounting piece.

Optionally, the support structure further comprises a support member, the support member being disposed on one side of the prefabricated staircase of the first steel ladder Liang Yuanli,

and/or the support is provided at one side of the prefabricated staircase of the second steel ladder Liang Yuanli.

Optionally, the support structure further includes a plurality of stiffeners, and the plurality of stiffeners are separately disposed on the first steel ladder beam and the second steel ladder beam.

The technical scheme provided by the utility model has the following advantages:

1. this embodiment provides a connection structure of prefabricated staircase, includes: the device comprises a prefabricated staircase, a mounting support and a grouting structure, wherein mounting hole structures are formed at two ends of the prefabricated staircase; the number of the mounting supports is at least two; the mounting support comprises a supporting structure and a mounting structure, one side of the supporting structure is connected with the mounting structure, and the other side of the supporting structure is suitable for being connected with the floor slab; one end of the mounting structure far away from the supporting structure is inserted into the mounting hole structure; the grouting structure is arranged between the prefabricated staircase and the supporting structure and between the mounting structure and the mounting hole structure.

The structure is respectively arranged at two ends of the prefabricated staircase by arranging two mounting supports, the two ends of the prefabricated staircase are provided with mounting hole structures, each mounting support comprises a supporting structure and a mounting structure, one mounting structure corresponds to one supporting structure, and the mounting structure is welded at the upper end of the corresponding supporting structure; the side surface or the lower end surface of the supporting structure is connected with the floor slab; the mounting structure is inserted in the mounting hole structure, the grouting structure is made of CGM grouting material, and the CGM is cement-based grouting material; when the prefabricated stairway is installed, firstly, installing a supporting structure, installing the supporting structure on a building body, then, positioning, paying off and searching for positioning points according to the positions of the installing hole structures, and welding the installing structure at the positioning points on the supporting structure; four lifting points are arranged on the prefabricated staircase for lifting, and two of the lifting points are connected with a chain block. The horizontal included angle of the bench is increased through the chain block, so that the horizontal projection length of the prefabricated staircase is shortened, and the staircase is convenient to install in a limited space formed by the steel frame. When the prefabricated staircase is hoisted to the position of the steel ladder beam, the angle of the prefabricated staircase can be quickly adjusted through the chain block, so that the prefabricated staircase support sections are parallel to the upper surface of the steel ladder beam, the installation hole structures are sleeved in a one-to-one correspondence manner corresponding to the installation structures, and the prefabricated staircase is installed on the support structure; further, the liquid CGM grouting material is infused into the mounting hole structure, and the CGM grouting material is infused between the supporting structure and the prefabricated staircase, the CGM grouting material can flow to any gap between the prefabricated staircase and the supporting structure and between the mounting structure and the mounting hole structure, and finally the grouting material is cooled to form a solid grouting structure, so that the gap grouting between the prefabricated staircase support and the steel ladder beam is filled densely, gaps can not appear, and the construction quality is ensured.

2. In this embodiment, the connection structure of the prefabricated staircase further includes a spacer and a second blocking layer; the gasket is sleeved at one end of the second mounting piece far away from the supporting structure; the second blocking layer is arranged in the second mounting hole, and the second blocking layer is arranged on one side of the gasket away from the supporting structure; the gasket, the first grouting layer, the second mounting piece and the prefabricated staircase jointly enclose a movable cavity. The structure is characterized in that a gasket is arranged at the upper end of a second mounting piece, the gasket, a first grouting layer, the second mounting piece and a prefabricated staircase jointly enclose a movable cavity, and a second blocking layer is poured above the gasket; the second blocking layer is made of mortar, is arranged above the gasket and mainly has attractive appearance and sealing effect; the second mounting piece is prevented from rusting, the upper surfaces of the second blocking layer and the second mounting hole are flush, and the problems that follow-up construction is influenced by a concave part or a convex part, construction is difficult and even safety is caused are avoided; when the earthquake condition appears, the stair appears rocking, and the gasket is buckled this moment, and second shutoff layer fracture, second installed part can rock in removing the cavity, guarantees prefabricated stair's self intensity and shape, prevents to produce the collision between second installed part and the second mounting hole, leads to prefabricated stair structure's damage.

3. In this embodiment, the connection structure of the prefabricated staircase further comprises a leveling layer arranged between the prefabricated staircase and the support structure. The structure is characterized in that a leveling layer is arranged between the prefabricated stairway and the supporting structure, the upper surface of the supporting structure is not horizontal due to errors of machining and construction, when the prefabricated stairway is installed at the upper end of the supporting structure, the leveling layer is required to be laid in advance, the leveling layers are plastering cakes, and 3 leveling layers are arranged on each supporting structure, and the diameter of each leveling layer is 100mm; leveling to the elevation of the bottom of the prefabricated staircase support, maintaining to 80% of the design strength, and then installing the prefabricated staircase to ensure the flatness of the prefabricated staircase.

Drawings

In order to more clearly illustrate the embodiments of the present utility model or the technical solutions in the prior art, the drawings that are needed in the description of the embodiments or the prior art will be briefly described, and it is obvious that the drawings in the description below are some embodiments of the present utility model, and other drawings can be obtained according to the drawings without inventive effort for a person skilled in the art.

FIG. 1 is a schematic view of the whole structure of a prefabricated staircase provided in this embodiment;

FIG. 2 is a schematic view of the support structure and the first grouting layer provided in the present embodiment;

FIG. 3 is a schematic view of the support structure and the second grouting layer provided in the present embodiment;

FIG. 4 is an enlarged partial schematic view of FIG. 3A;

reference numerals illustrate:

1-prefabricating stairs; 11-mounting hole structure; 111-a first mounting hole; 112-a second mounting hole;

2-mounting a support; 21-a support structure; 211-a first steel ladder beam; 212-a second steel ladder beam; 213-a support; 214-stiffeners; 22-mounting structure; 221-a first mount; 222-a second mount;

3-grouting structure; 31-a first grouting layer; 32-a second grouting layer;

4-a gasket;

51-a first blocking layer; 52-a second blocking layer; 53-a third blocking layer;

6-leveling layer.

Detailed Description

The following description of the embodiments of the present utility model will be made apparent and fully in view of the accompanying drawings, in which some, but not all embodiments of the utility model are shown. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

In the description of the present utility model, it should be noted that the directions or positional relationships indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. are based on the directions or positional relationships shown in the drawings, are merely for convenience of describing the present utility model and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present utility model. Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present utility model, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present utility model will be understood in specific cases by those of ordinary skill in the art.

In addition, the technical features of the different embodiments of the present utility model described below may be combined with each other as long as they do not collide with each other.

Example 1

The present embodiment provides a connection structure of prefabricated stairway, as shown in fig. 1 to 4, including: the prefabricated staircase comprises a prefabricated staircase body 1, a mounting support 2 and a grouting structure 3, wherein mounting hole structures 11 are formed at two ends of the prefabricated staircase body 1; the number of the mounting supports 2 is at least two; the mounting support 2 comprises a supporting structure 21 and a mounting structure 22, one side of the supporting structure 21 is connected with the mounting structure 22, and the other side of the supporting structure 21 is suitable for being connected with a floor slab; one end of the mounting structure 22, which is far away from the supporting structure 21, is inserted into the mounting hole structure 11; the grouting structure 3 is arranged between the prefabricated staircase 1 and the supporting structure 21 and between the mounting structure 22 and the mounting hole structure 11.

The structure is characterized in that two mounting supports 2 are arranged and are respectively arranged at two ends of a prefabricated staircase 1, mounting hole structures 11 are arranged at two ends of the prefabricated staircase 1, each mounting support 2 comprises a supporting structure 21 and a mounting structure 22, one mounting structure 22 corresponds to one supporting structure 21, and the mounting structure 22 is welded at the upper end of the corresponding supporting structure 21; the side or lower end surface of the support structure 21 is connected with the floor slab; the mounting structure 22 is inserted into the mounting hole structure 11, the grouting structure 3 is made of CGM grouting material, and the CGM is cement-based grouting material; when the prefabricated staircase 1 is installed, firstly, the supporting structure 21 is installed on a building body, then positioning and paying-off are carried out according to the position of the installation hole structure 11 to find positioning points, and the installation structure 22 is welded at the positioning points on the supporting structure 21 at the positioning point positions; the prefabricated staircase 1 is provided with four hanging points for hanging, wherein two hanging points are connected with a chain block. The horizontal included angle of the bench is increased through the chain block, so that the horizontal projection length of the prefabricated staircase 1 is shortened, and the prefabricated staircase 1 is convenient to install in a limited space formed by a steel frame. When the prefabricated staircase 1 is hoisted to the position of the steel ladder beam, the angle of the prefabricated staircase 1 can be quickly adjusted through the chain block, so that the support section of the prefabricated staircase 1 is parallel to the upper surface of the steel ladder beam, the installation hole structures 11 are sleeved in a one-to-one correspondence manner with the installation structures 22, and the prefabricated staircase 1 is installed on the support structure 21; further, the liquid CGM grouting material is infused into the mounting hole structure 11, and the CGM grouting material is infused between the supporting structure 21 and the prefabricated staircase 1, the CGM grouting material flows to any gap between the prefabricated staircase 1 and the supporting structure 21 and between the mounting structure 22 and the mounting hole structure 11, and finally the grouting structure 3 is cooled to form a solid body, so that gap grouting between the prefabricated staircase 1 support and the steel ladder beam is filled tightly, gaps are avoided, and construction quality is ensured.

In the present embodiment, as shown in fig. 1 to 3, the mounting hole structure 11 includes a first mounting hole 111 and a second mounting hole 112; the mounting structure 22 includes a first mounting member 221 and a second mounting member 222; the first mounting member 221 is inserted into the first mounting hole 111; the second mounting piece 222 is inserted into the second mounting hole 112; the grouting structure 3 includes a first grouting layer 31 and a second grouting layer 32; the first grouting layer 31 is arranged between the prefabricated staircase 1 and the supporting structure 21; the second grout layer 32 is disposed between the first mount 221 and the first mount hole 111. In the structure, a first mounting hole 111 and a second mounting hole 112 are arranged, wherein the first mounting hole 111 is formed at one end of the prefabricated staircase 1, which is deviated upwards, and the second mounting hole 112 is formed at one end of the prefabricated staircase 1, which is deviated downwards; the first mounting member 221 is welded to the support structure 21 at an upper end thereof; the second mounting member 222 is welded to the support structure 21 at a lower end thereof; when the prefabricated staircase 1 is mounted on the supporting structure 21, the first mounting piece 221 is inserted into the first mounting hole 111, and the second mounting piece 222 is inserted into the second mounting hole 112, wherein the first mounting piece 221 and the second mounting piece 222 are C-level bolts of M20; the grouting structure 3 comprises a first grouting layer 31 and a second grouting layer 32, the first grouting layer 31 is formed between the prefabricated staircase 1 and the supporting structure 21, the upper surface and the lower surface of the first grouting layer 31 are respectively and tightly attached to the lower surface of the prefabricated staircase 1 and the upper surface of the supporting structure 21, and the connection strength between the prefabricated staircase 1 and the supporting structure 21 is ensured; the gap between the prefabricated staircase 1 support and the steel ladder beam is filled with grouting and is compact, gaps are avoided, and construction quality is ensured; the second grout layer 32 is formed in the first mounting hole 111, filled between the first mounting piece 221 and the first mounting hole 111, and tightly connected to the inner surface of the first mounting hole 111 and the outer surface of the first mounting piece 221, respectively, to further secure the connection strength between the prefabricated staircase 1 and the supporting structure 21.

In the present embodiment, as shown in fig. 1 to 3, the first mounting hole 111 and the second mounting hole 112 gradually decrease in diameter from an end distant from the support structure 21 to an end close to the support structure 21. This structure is configured by providing the first mounting hole 111 and the second mounting hole 112 so that the diameters thereof gradually decrease from the end far from the support structure 21 to the end near the support structure 21, that is, from top to bottom, the diameters of the first mounting hole 111 and the second mounting hole 112 gradually decrease; make its opening part great, more easily empty CGM grouting material, under the action of gravity, the more CGM grouting material of top can more easily compact the CGM grouting material of below for the CGM grouting material is inseparabler with being connected between first mounting hole 111 and the first installed part 221. Wherein, the diameter above the first mounting hole 111 is 60mm, and the diameter below the first mounting hole 111 is 50mm; the upper diameter of the second mounting hole 112 is 75mm, and the lower diameter of the second mounting hole 112 is 50mm.

In this embodiment, as shown in fig. 1 and 2, the connection structure of the prefabricated staircase 1 further includes a first blocking layer 51, the first blocking layer 51 is disposed in the first mounting hole 111, and the first blocking layer 51 is disposed at a side of the second grouting layer 32 away from the first grouting layer 31. This structure is through setting up first shutoff layer 51, and the material of first shutoff layer 51 is the mortar, and first shutoff layer 51 sets up in first mounting hole 111, and sets up in the top of second grouting layer 32 for the upper surface of first shutoff layer 51 and first mounting hole 111 flushes, avoids appearing sunken or bulge and influences subsequent construction, causes the difficult even safety scheduling problem of construction.

In this embodiment, as shown in fig. 1, 3 and 4, the connection structure of the prefabricated staircase 1 further includes a spacer 4 and a second blocking layer 52; the gasket 4 is sleeved at one end of the second mounting piece 222 far away from the supporting structure 21; the second blocking layer 52 is disposed within the second mounting hole 112, and the second blocking layer 52 is disposed on a side of the spacer 4 remote from the support structure 21; together, the spacer 4, the first grout layer 31, the second mount 222 and the prefabricated staircase 1 enclose a moving cavity. In the structure, the gasket 4 is arranged at the upper end of the second mounting piece 222, the inner wall of the second mounting hole 112 is provided with a step surface, and the gasket 4 is abutted against the step surface; the gasket 4, the first grouting layer 31, the second mounting piece 222 and the prefabricated staircase 1 jointly enclose a movable cavity, and a second blocking layer 52 is poured above the gasket 4; the second blocking layer 52 is made of mortar, and the second blocking layer 52 is arranged above the gasket 4 and mainly has attractive appearance and sealing effect; the second mounting piece 222 is prevented from rusting, the upper surfaces of the second blocking layer 52 and the second mounting hole 112 are flush, and the problems of difficult construction, safety and the like caused by the influence of a concave part or a convex part on subsequent construction are avoided; when the earthquake condition appears, the stair appears rocking, and gasket 4 buckling this moment, second shutoff layer 52 fracture, second installed part 222 can rock in removing the cavity, guarantees prefabricated stair 1's self intensity and shape, prevents to produce the collision between second installed part 222 and the second mounting hole 112, leads to prefabricated stair 1's damage.

In this embodiment, as shown in fig. 1 to 3, the connection structure of the prefabricated staircase 1 further includes a third blocking layer 53, the third blocking layer 53 is disposed between the prefabricated staircase 1 and the supporting structure 21, and the third blocking layer 53 is disposed outside the first grouting layer 31. In the structure, the third blocking layer 53 is arranged, the material of the third blocking layer 53 is mortar, and during construction, cement mortar is firstly adopted to block the periphery of a gap between the prefabricated staircase 1 and the supporting structure 21, then CGM grouting material is filled into the gap between the prefabricated staircase 1 and the supporting structure 21, and then CGM grouting material is filled into the first mounting hole 111 and the second mounting hole 112.

In this embodiment, as shown in fig. 2 to 3, the connection structure of the prefabricated staircase 1 further comprises a screed 6, the screed 6 being arranged between the prefabricated staircase 1 and the support structure 21. In the structure, by arranging the leveling layers 6, the leveling layers 6 are arranged between the prefabricated staircase 1 and the supporting structure 21, the upper surface of the supporting structure 21 is not horizontal due to errors of processing and construction, when the prefabricated staircase 1 is arranged at the upper end of the supporting structure 21, the leveling layers 6 are required to be laid in advance, the leveling layers 6 are plaster cakes, and 3 leveling layers are arranged on each supporting structure 21, and the diameter is 100mm; leveling to the bottom elevation of the support of the prefabricated staircase 1, and installing the prefabricated staircase 1 after maintaining to 80% of the design strength, so as to ensure the flatness of the prefabricated staircase 1.

In this embodiment, as shown in fig. 1-3, support structure 21 includes a first steel ladder beam 211 and a second steel ladder beam 212; the first steel ladder beam 211 is connected with the first mounting piece 221, and the central axis of the first steel ladder beam 211 coincides with the axis of the first mounting piece 221; second steel ladder beam 212 is coupled to second mount 222, the central axis of second steel ladder beam 212 coinciding with the axis of second mount 222. This structure is achieved by providing a first steel ladder beam 211 and a second steel ladder beam 212; the first steel ladder beam 211 and the second steel ladder beam 212 are I-shaped steel ladder beams, the first mounting piece 221 is welded at the middle position of the beam plate above the first steel ladder beam 211, and the second mounting piece 222 is welded at the middle position of the beam plate above the second steel ladder beam 212, so that stress points of the first steel ladder beam 211 and the second steel ladder beam 212 are located at the middle positions, and deformation of the steel ladder beams caused by the fact that the stress points are located at two sides is prevented.

In this embodiment, as shown in fig. 1 to 3, the support structure 21 further includes a support 213, the support 213 being disposed on a side of the first steel ladder beam 211 away from the prefabricated staircase 1 and the support 213 being disposed on a side of the second steel ladder beam 212 away from the prefabricated staircase 1; or the supporting member 213 is provided only at a side of the first steel ladder beam 211 remote from the prefabricated staircase 1; or support 213 is only disposed on the side of second steel ladder beam 212 remote from prefabricated staircase 1; the floor slab is supported by the supporting piece 213, so that the stressed area is increased, and the structural strength is improved.

In this embodiment, as shown in fig. 1-3, support structure 21 further includes a plurality of stiffeners 214, with the plurality of stiffeners 214 being disposed on first steel ladder beam 211 and second steel ladder beam 212. In the structure, the stiffeners 214 are arranged between the upper beam plate and the lower beam plate of the first steel ladder beam 211 and the second steel ladder beam 212 so as to strengthen the upper beam plate and the lower beam plate of the first steel ladder beam 211 and the second steel ladder beam 212 and increase the strength; the stiffening plates are arranged at intervals of 450mm and have a plate thickness of 6 mm.

The working process of the connecting structure of the prefabricated staircase 1 provided in the embodiment is as follows:

when the prefabricated staircase 1 is installed, firstly, the supporting structure 21 is installed on a building body, then positioning and paying-off are carried out according to the position of the installation hole structure 11 to find positioning points, and the installation structure 22 is welded at the positioning points on the supporting structure 21 at the positioning point positions; paving a leveling layer 6 on the upper surfaces of the first steel ladder beam 211 and the second steel ladder beam 212; then, the mounting hole structures 11 are sleeved in a one-to-one correspondence with the mounting structures 22, and the prefabricated staircase 1 is mounted on the supporting structure 21; the periphery of a gap between the prefabricated staircase 1 and the supporting structure 21 is plugged by a third plugging layer 53; further, the liquid CGM grouting material is infused into the mounting hole structure 11, and the CGM grouting material is infused between the supporting structure 21 and the prefabricated staircase 1, the CGM grouting material flows to any gap between the prefabricated staircase 1 and the supporting structure 21 and between the mounting structure 22 and the mounting hole structure 11, the first grouting layer 31 and the second grouting layer 32 which are finally cooled to form solids are finally cooled, the gasket 4 and the nut are mounted at the upper end of the second mounting piece 222, and then the second sealing layer 52 and the first sealing layer 51 are irrigated.

It is apparent that the above examples are given by way of illustration only and are not limiting of the embodiments. Other variations or modifications of the above teachings will be apparent to those of ordinary skill in the art. It is not necessary here nor is it exhaustive of all embodiments. While still being apparent from variations or modifications that may be made by those skilled in the art are within the scope of the utility model.

Claims (10)

1. A connection structure of a prefabricated staircase, characterized by comprising:

the prefabricated staircase comprises a prefabricated staircase body (1), wherein mounting hole structures (11) are formed at two ends of the prefabricated staircase body (1);

at least two mounting supports (2), wherein the mounting supports (2) comprise a supporting structure (21) and a mounting structure (22), one side of the supporting structure (21) is connected with the mounting structure (22), and the other side of the supporting structure (21) is suitable for being connected with a floor slab; one end of the mounting structure (22) far away from the supporting structure (21) is inserted into the mounting hole structure (11);

the novel prefabricated stairway comprises a prefabricated stairway, and is characterized by further comprising a grouting structure (3), wherein the grouting structure (3) is arranged between the prefabricated stairway (1) and the supporting structure (21) and between the mounting structure (22) and the mounting hole structure (11).

2. The connecting structure of prefabricated stairway according to claim 1, wherein the mounting hole structure (11) comprises a first mounting hole (111) and a second mounting hole (112);

the mounting structure (22) comprises a first mounting member (221) and a second mounting member (222); the first mounting piece (221) is inserted into the first mounting hole (111); the second mounting piece (222) is inserted into the second mounting hole (112);

the grouting structure (3) comprises a first grouting layer (31) and a second grouting layer (32); the first grouting layer (31) is arranged between the prefabricated staircase (1) and the supporting structure (21); the second grout layer (32) is disposed between the first mounting member (221) and the first mounting hole (111).

3. A connecting structure of a prefabricated staircase according to claim 2, characterized in that the first mounting hole (111) and the second mounting hole (112) decrease in diameter gradually from an end remote from the support structure (21) to an end close to the support structure (21).

4. The connecting structure of the prefabricated staircase according to claim 2, further comprising a first blocking layer (51), the first blocking layer (51) being arranged in the first mounting hole (111) and the first blocking layer (51) being arranged at a side of the second grouting layer (32) remote from the first grouting layer (31).

5. A connecting structure of prefabricated stairways according to claim 2, further comprising a spacer (4) and a second blocking layer (52); the gasket (4) is sleeved at one end of the second mounting piece (222) far away from the supporting structure (21); the second blocking layer (52) is arranged in the second mounting hole (112), and the second blocking layer (52) is arranged on one side of the gasket (4) away from the supporting structure (21);

the gasket (4), the first grouting layer (31), the second mounting piece (222) and the prefabricated staircase (1) jointly enclose a movable cavity.

6. A connecting structure of a prefabricated staircase according to any of the claims 2-5, characterized in, that it further comprises a third blocking layer (53), which third blocking layer (53) is arranged between the prefabricated staircase (1) and the supporting structure (21), and that the third blocking layer (53) is arranged outside the first grouting layer (31).

7. A connecting structure of a prefabricated staircase according to claim 6, characterized in that it further comprises a screed (6), which screed (6) is arranged between the prefabricated staircase (1) and the supporting structure (21).

8. A connecting structure of a prefabricated staircase according to claim 6, characterized in that the supporting structure (21) comprises a first steel ladder beam (211) and a second steel ladder beam (212); the first steel ladder beam (211) is connected with the first mounting piece (221), and the central axis of the first steel ladder beam (211) coincides with the axis of the first mounting piece (221);

the second steel ladder beam (212) is connected with the second mounting piece (222), and the central axis of the second steel ladder beam (212) coincides with the axis of the second mounting piece (222).

9. A connecting structure for a prefabricated staircase according to claim 8, characterized in that the supporting structure (21) further comprises a support (213), which support (213) is arranged at the side of the first steel ladder beam (211) remote from the prefabricated staircase (1),

and/or the support (213) is arranged at the side of the second steel ladder beam (212) remote from the prefabricated staircase (1).

10. A connecting structure for a prefabricated staircase according to claim 9, characterized in that the supporting structure (21) further comprises a number of stiffeners (214), the number of stiffeners (214) being provided separately on the first (211) and the second (212) steel ladder beams.