CN211735984U

CN211735984U - Prefabricated coincide floor of assembled and assembled coincide floor

Info

Publication number: CN211735984U
Application number: CN201922066136.3U
Authority: CN
Inventors: 卢旦; 程欣; 余登飞
Original assignee: Shanghai Shunjie New Material Technology Co ltd; East China Architectural Design and Research Institute Co Ltd
Current assignee: Shanghai Shunjie New Material Technology Co ltd; East China Architectural Design and Research Institute Co Ltd
Priority date: 2019-11-26
Filing date: 2019-11-26
Publication date: 2020-10-23
Anticipated expiration: 2029-11-26

Abstract

The utility model discloses a prefabricated coincide floor of assembled and assembled coincide floor expose the both ends of truss reinforcing bar outside the precast concrete layer to it uses to be used as the rest end. Utilize the utility model provides a problem that traditional flange limit beard reinforcing bar rigidity can be solved for a short time to realize exempting from to prop at the job site. In order to prevent the precast slab from cracking prematurely, a steel wire mesh is arranged in the precast concrete layer. Ordinary concrete in the original concrete coincide floor of usable lightweight concrete replacement is in order to alleviate the floor dead weight, because the use is lightweight concrete, and lightweight concrete's intensity is generally less than ordinary concrete, and it is more convenient consequently to open a hole on the spot, more can deal with proruption design change than traditional coincide floor, thereby still can utilize and reduce precast concrete layer thickness and reduce the floor dead weight, ordinary concrete coincide floor thickness generally is for being not less than 60mm, the utility model provides a precast concrete layer thickness reduces to 30mm, and because the existence of wire net, its performance can not weaken.

Description

Prefabricated coincide floor of assembled and assembled coincide floor

Technical Field

The utility model belongs to the technical field of the building engineering, especially, relate to prefabricated coincide floor of assembled and assembled coincide floor.

Background

The floor slab in the existing fabricated concrete structure mostly uses a concrete truss steel bar laminated floor slab, although the floor slab has large rigidity, the weight is also large, only a single-layer stressed steel bar (commonly called a beard steel bar) extends out of the edge of the floor slab, the rigidity is smaller, and the floor slab cannot bear the slab surface load under the prefabricated slab and the construction working condition. Therefore, the assembly type building construction method needs to be supported by feet and hands at the bottom in a full space on a construction site, and the advantage of assembly type construction cannot be embodied.

The floor in the existing assembled steel structure mostly uses profiled steel sheets or steel bar truss floor bearing plates, the stiffness of the profiled steel sheets or steel bar truss floor bearing plates is small, the stiffness of the steel plates is improved, and the support can be avoided under a small span (within 3 meters), but the application range is narrow, the steel structure has the risk of rusting, and the durability of the concrete floor is not as strong.

Therefore, it is necessary to provide a prefabricated composite floor slab and a prefabricated composite floor slab which are convenient to construct and durable.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a prefabricated coincide floor of assembled and assembled coincide floor for it needs to support at the full ambition scaffold in bottom at the job site to solve among the prior art, or only can realize the problem of exempting from of less span to support.

In order to solve the technical problem, a first aspect of the present invention provides an assembled prefabricated composite floor slab, including a prefabricated concrete layer, a steel wire mesh and at least two truss steel bars;

the truss reinforcing steel bars are arranged in parallel at intervals, the steel wire meshes are bound on the at least two truss reinforcing steel bars, the steel wire meshes are embedded in the precast concrete layer, and the truss reinforcing steel bars are embedded in the precast concrete layer;

two ends of the truss reinforcing steel bar are exposed outside the precast concrete layer and are used as rest ends.

Optionally, the width of the plane where the prefabricated composite floor slab is located along the direction perpendicular to the extending direction of the truss steel bars is 600 mm.

Optionally, the thickness of the precast concrete layer in the direction perpendicular to the plane of the precast concrete layer is less than or equal to 30 mm.

Optionally, the precast concrete layer is ordinary concrete or lightweight concrete.

Optionally, the distance between two adjacent truss steel bars is less than or equal to 200 mm.

The second aspect of the utility model provides an assembled coincide floor, arbitrary in the description of above-mentioned characteristic the prefabricated coincide floor of assembled.

Optionally, the system further comprises a cast-in-place concrete layer;

the cast-in-place concrete layer is arranged on the fabricated prefabricated composite floor slab.

The utility model provides a prefabricated coincide floor of assembled and assembled coincide floor, with prior art difference lie in, will truss reinforcement's both ends are exposed outside the precast concrete layer to use as the rest end. Utilize the utility model provides a problem that traditional flange limit beard reinforcing bar rigidity can be solved for a short time to realize exempting from to prop at the job site. In order to prevent the precast slab from cracking prematurely, a steel wire mesh is arranged in the precast concrete layer.

Will the width of prefabricated coincide floor of assembled sets up to 600mm, and the quality that can make prefabricated coincide floor of design like this is lighter, and unified size can make the standardization level improve, can make manufacturing cost reduce.

The light concrete can be used for replacing the common concrete in the original concrete composite floor slab so as to reduce the self weight of the floor slab, and the light concrete is used, and the strength of the light concrete is generally lower than that of the common concrete, so that the on-site hole opening is more convenient, and the composite floor slab can better cope with the sudden design change than the traditional composite floor slab. In addition, thereby still can utilize and reduce precast concrete layer thickness and reduce the floor dead weight, ordinary concrete coincide floor thickness generally is for being not less than 60mm, the utility model provides a precast concrete layer thickness reduces for being not more than 30mm, and because the existence of wire net, its performance can not weaken.

In addition, for the rigidity of further improvement floor, can reduce the interval of truss reinforcing bar, conventional coincide board interval is 600mm the utility model discloses well design is not more than 200 mm.

Drawings

Fig. 1 is a schematic structural view of an assembled prefabricated composite floor slab provided by an embodiment of the present invention;

FIG. 2 is a schematic view of the frame of FIG. 1;

fig. 3 is a schematic view of a construction site of an assembled composite floor slab according to another embodiment of the present invention;

fig. 4 is a schematic flow chart of a construction method of an assembled composite floor slab according to another embodiment of the present invention;

100-precast concrete layer, 200-steel wire mesh and 300-truss steel bar.

Detailed Description

The following description of the embodiments of the present invention will be described in more detail with reference to the drawings. The advantages and features of the present invention will become more apparent from the following description. It should be noted that the drawings are in simplified form and are not to precise scale, and are provided for convenience and clarity in order to facilitate the description of the embodiments of the present invention.

In the description of the present invention, it should be understood that the terms "center", "upper", "lower", "left", "right", and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.

As shown in fig. 1 and 2, the embodiment of the utility model provides a prefabricated coincide floor of assembled, including precast concrete layer 100, wire net 200 and two at least truss reinforcing bars 300. The truss reinforcing steel bars 300 are arranged in parallel at intervals, the steel wire mesh 200 is bound on the at least two truss reinforcing steel bars 300, the steel wire mesh 200 is embedded in the precast concrete layer 100, and the truss reinforcing steel bars 300 are embedded in the precast concrete layer 100. Both ends of the truss reinforcing bars 300 are exposed outside the precast concrete layer 100 and serve as rest ends.

The difference from the prior art is that both ends of the truss reinforcing bars 300 are exposed outside the precast concrete layer 100 and used as rest ends. Utilize the utility model provides a problem that traditional flange limit beard reinforcing bar rigidity can be solved for a short time to realize exempting from to prop at the job site. In order to prevent the precast slab from being cracked prematurely, a steel wire mesh 200 is further provided in the precast concrete layer 100.

Optionally, the width of the plane of the prefabricated composite floor slab along the direction perpendicular to the extending direction of the truss steel bars 300 is 600 mm. Will the width of prefabricated coincide floor of assembled is unified to be set up to 600mm, and the design can make the quality of prefabricated coincide floor lighter like this, and just unified size can make the standardization level improve, can make manufacturing cost reduce.

The light concrete can be used for replacing the common concrete in the original concrete composite floor slab so as to reduce the self weight of the floor slab, and the light concrete is used, and the strength of the light concrete is generally lower than that of the common concrete, so that the on-site hole opening is more convenient, and the composite floor slab can better cope with the sudden design change than the traditional composite floor slab. Besides, still can utilize reduction precast concrete layer 100 and thus reduce the floor dead weight, ordinary concrete coincide floor thickness generally is for being not less than 60mm, the utility model provides a precast concrete layer 100 thickness reduces for being not more than 30mm, and because wire net 200's existence, its performance can not weaken.

Optionally, the distance between two adjacent truss steel bars 300 is less than or equal to 200 mm. For the rigidity of further improvement floor, can reduce truss reinforcing bar 300's interval, conventional coincide board interval is 600mm the utility model discloses well design is not more than 200 mm. As can be seen from the foregoing analysis, the widths of the prefabricated composite floor slabs are uniformly set to be 600mm, and then at least two truss reinforcements 300 are generally included in one prefabricated composite floor slab. In order to obtain better rigidity, the number of the truss reinforcing steel bars 300 can be increased appropriately, and is not limited herein, and the appropriate number should be selected according to actual needs.

The embodiment of the utility model provides a prefabricated coincide floor of assembled is still provided, arbitrary in the description of above-mentioned characteristics.

Optionally, the fabricated composite floor slab further comprises a cast-in-place concrete layer, and the cast-in-place concrete layer is arranged on the fabricated prefabricated composite floor slab.

As shown in fig. 3 and 4, another embodiment of the present invention further provides a construction method of prefabricated composite floor slab, which utilizes any of the above-mentioned features.

Specifically, the construction method comprises the following steps:

s1: placing the rest end of the fabricated prefabricated composite floor slab at a position to be constructed;

s2: all the prefabricated composite floor slabs are arranged in sequence and closely;

s3: and pouring a cast-in-place concrete layer on the fabricated prefabricated composite floor slab.

Utilize the utility model provides a prefabricated coincide floor of assembled makes the coincide floor of assembled, owing to will the both ends of truss reinforcing bar are exposed outside the precast concrete layer to it uses to be used as the rest end. The problem that traditional plate-edge beard steel bars are small in rigidity and cannot be supported in a construction site is effectively solved, compared with construction methods in the prior art, steps of supporting the bottom of the construction site by feet and hands are reduced, construction procedures are effectively simplified, and construction efficiency is improved.

To sum up, the utility model provides a prefabricated coincide floor of assembled and assembled coincide floor, with prior art difference lie in, will the both ends of truss reinforcing bar are exposed outside the precast concrete layer to use as the rest end. Utilize the utility model provides a problem that traditional flange limit beard reinforcing bar rigidity can be solved for a short time to realize exempting from to prop at the job site. In order to prevent the precast slab from cracking prematurely, a steel wire mesh is arranged in the precast concrete layer.

In the description herein, references to the description of the term "one embodiment," "some embodiments," "an example" or "a specific example" or the like are intended to mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. And the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments. Furthermore, various embodiments or examples described in this specification can be combined and combined by those skilled in the art.

The above description is only for the preferred embodiment of the present invention, and does not limit the present invention. Any technical personnel who belongs to the technical field, in the scope that does not deviate from the technical scheme of the utility model, to the technical scheme and the technical content that the utility model discloses expose do the change such as the equivalent replacement of any form or modification, all belong to the content that does not break away from the technical scheme of the utility model, still belong to within the scope of protection of the utility model.

Claims

1. An assembled prefabricated composite floor slab is characterized by comprising a prefabricated concrete layer, a steel wire mesh and at least two truss steel bars;

2. An assembled prefabricated composite floor slab as claimed in claim 1, wherein said assembled prefabricated composite floor slab has a width of 600mm in a plane perpendicular to the direction of extension of said truss reinforcing bars.

3. An assembled prefabricated composite floor slab as claimed in claim 1, wherein said precast concrete layer has a thickness of 30mm or less in a direction perpendicular to a plane of said precast concrete layer.

4. An assembled prefabricated composite floor slab as claimed in claim 3, wherein said precast concrete layer is general concrete or lightweight concrete.

5. An assembled prefabricated composite floor slab as claimed in claim 1, wherein the distance between two adjacent truss reinforcing bars is less than or equal to 200 mm.

6. An assembled composite floor slab, comprising the assembled prefabricated composite floor slab as claimed in any one of claims 1 to 5.

7. An assembled composite floor slab as claimed in claim 6, further comprising a cast-in-place concrete layer;