CN214995084U

CN214995084U - Hollow superstructure of steel bar truss superimposed sheet

Info

Publication number: CN214995084U
Application number: CN202120072045.5U
Authority: CN
Inventors: 郑少昌
Original assignee: Guangzhou Hanhua Building Design Co ltd
Current assignee: Guangzhou Hanhua Building Design Co ltd
Priority date: 2021-01-12
Filing date: 2021-01-12
Publication date: 2021-12-03
Anticipated expiration: 2031-01-12

Abstract

The utility model relates to a hollow superstructure of steel bar truss superimposed sheet, include: the slab comprises a bottom template, slab bottom stress ribs, slab surface distribution ribs, hidden beam steel bar trusses and a concrete layer; the above-mentioned scheme that this application provided, adopt prefabricated die block board, need not the formwork at the bottom of the board during construction, accelerate the construction progress, because dark beam steel bar truss highly is greater than the height between face distribution muscle and the board end atress muscle along the perpendicular to die block board direction, through the dark beam steel bar truss who increases promptly, the prefabricated layer of reinforced concrete of die block board reunion, thereby can gain great cross-section moment resistance, make the floor construction stage can resist bigger concrete placement load and other construction loads, the span of floor consequently can strengthen, hollow structure's setting simultaneously, the weight of whole superstructure has been reduced, the service span of superstructure has further been strengthened.

Description

Hollow superstructure of steel bar truss superimposed sheet

Technical Field

The utility model relates to a building technical field especially relates to a hollow superstructure of steel bar truss superimposed sheet.

Background

In the field of building structure floor systems, the conventional floor system method is a cast-in-place beam slab floor system, in order to accelerate the construction speed and meet the development of an assembly type building, a steel bar truss floor support plate, a profiled steel sheet composite floor slab and a truss reinforced concrete laminated slab are derived, and in order to increase more indoor headroom, a flat slab, an haunched large slab and a hollow floor system are derived.

Although the steel bar truss floor support plate, the profiled steel sheet combined floor slab and the truss reinforced concrete laminated slab have the galvanized bottom die steel plate or the reinforced concrete prefabricated layer, a formwork is not required during construction, and the construction speed is accelerated, but the steel bar framework of the truss steel bar is not high, so the steel bar truss floor support plate is only suitable for a small-span floor slab and needs to be provided with a structural beam; the flat slab, the haunched large slab and the hollow slab have the advantages that although the arrangement of structural beams is omitted, better indoor clearance experience can be obtained, the slab is thick and is suitable for large-span slabs, but the slab bottom needs to be provided with a template for pouring, so that the construction speed is slow, and the requirements of national fabricated buildings are not met.

SUMMERY OF THE UTILITY MODEL

Therefore, the hollow floor system of the steel bar truss composite slab needs to be provided aiming at the problem that the existing truss reinforced concrete composite slab is only suitable for a small-span floor slab.

The utility model provides a hollow superstructure of steel bar truss superimposed sheet, include: the slab comprises a bottom template, slab bottom stress ribs, slab surface distribution ribs, hidden beam steel bar trusses and a concrete layer;

the bottom template and the concrete layer are oppositely arranged at intervals, the plate bottom stress ribs are arranged on the bottom template, and the plate surface distribution ribs are arranged on the concrete layer;

a plurality of hidden beam steel bar trusses are arranged between the slab bottom stress rib and the slab surface distribution rib at intervals, and a hollow structure is arranged between every two adjacent hidden beam steel bar trusses;

the hidden beam steel bar truss is perpendicular to the height of the bottom template in the direction and is larger than the height between the plate surface distribution ribs and the plate bottom stress ribs.

The hollow floor system of the steel bar truss laminated slab adopts the prefabricated bottom template, so that a formwork is not required at the bottom of the slab during construction, the construction progress is accelerated, because the height of the hidden beam steel bar truss in the direction perpendicular to the bottom template is greater than the height between a slab surface distribution rib and a slab bottom stress rib, namely, the hidden beam steel bar truss is heightened, and then the reinforced concrete prefabricated layer of the bottom template is combined, so that a larger cross-sectional moment resistance can be obtained, the floor system can resist larger concrete pouring load and other construction load in the construction stage, the span of the floor system is enlarged, meanwhile, the hollow structure is arranged, the weight of the whole floor system is reduced, and the use span of the floor system is further enlarged.

In one embodiment, the embedded beam steel bar truss structure further comprises an insulating layer arranged at the hollow structure between two adjacent embedded beam steel bar trusses.

In one embodiment, the thermal insulation layer comprises a thermal insulation layer and a bottom formwork, wherein the thermal insulation layer is arranged on one side, facing the bottom formwork, of the thermal insulation layer.

In one embodiment, the concrete layer is arranged on the side of the heat insulation layer facing the concrete layer.

In one embodiment, the hidden beam steel bar truss comprises square bars, upper chord steel bars and lower chord steel bars, the square bars are arranged between the plate bottom stress bars and the plate surface distribution bars, and the upper chord steel bars and the lower chord steel bars are arranged in the square bars.

In one embodiment, the steel plate further comprises a first reinforcing rib, and the first reinforcing rib is arranged on the square rib.

In one embodiment, the plate bottom stress ribs comprise vertical ribs and transverse ribs, and the vertical ribs and the transverse ribs are arranged in a crossed mode.

In one embodiment, the vehicle body further comprises a second reinforcing rib, and the second reinforcing rib is arranged between the vertical rib and the transverse rib.

In one embodiment, the concrete layer is arranged on the bottom formwork, and the fire-proof layer is arranged on one side, facing away from the concrete layer, of the bottom formwork.

In one embodiment, the plate surface distribution rib plate further comprises a third reinforcing rib, and the third reinforcing rib is arranged on the plate surface distribution rib.

Drawings

Fig. 1 is a schematic structural view of a hollow floor slab made of steel bar truss composite slabs according to an embodiment of the present invention;

FIG. 2 is a cross-sectional view of FIG. 1;

fig. 3 is a top view of fig. 1.

Detailed Description

In order to make the above objects, features and advantages of the present invention more comprehensible, embodiments of the present invention are described in detail below with reference to the accompanying drawings. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention. The present invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein, as those skilled in the art will be able to make similar modifications without departing from the spirit and scope of the present invention.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", 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 simplicity of description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, 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 at least one such feature. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.

In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," and "fixed" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.

In the present application, unless expressly stated or limited otherwise, the first feature may be directly on or directly under the second feature or indirectly via intermediate members. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.

It will be understood that when an element is referred to as being "secured to" or "disposed on" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and the like as used herein are for illustrative purposes only and do not denote a unique embodiment.

As shown in fig. 1, in an embodiment of the present invention, a hollow floor slab of steel bar truss composite slab is provided, including: the slab comprises a bottom template 10, slab bottom stress ribs 20, slab surface distribution ribs 30, hidden beam steel bar trusses 40 and a concrete layer 60; the bottom template 10 and the concrete layer 60 are arranged at intervals relatively, the slab bottom stress ribs 20 are arranged on the bottom template 10, and the slab surface distribution ribs 30 are arranged on the concrete layer 60; a plurality of hidden beam steel bar trusses 40 are arranged between the slab bottom stress rib 20 and the slab surface distribution rib 30 at intervals, and a hollow structure is formed between every two adjacent hidden beam steel bar trusses 40; the height of the hidden beam steel bar truss 40 along the direction vertical to the bottom formwork 10 is larger than the height between the plate surface distribution ribs 30 and the plate bottom stress ribs 20.

Specifically, before the construction of the steel bar truss laminated slab hollow floor, the bottom formwork 10 is firstly transported to a construction site, then the slab bottom stress bars 20 are fixed on the bottom formwork 10, then the hidden beam steel bar truss 40 is fixed on the slab bottom stress bars 20, after the hidden beam steel bar truss 40 is fixed, the slab surface distribution ribs 30 are fixed on the hidden beam steel bar truss 40, at the moment, the distance between the slab surface distribution ribs 30 and the slab bottom stress bars 20 is smaller than the height of the hidden beam steel bar truss 40, and finally the concrete layer 60 is poured.

By adopting the technical scheme, the floor adopts the prefabricated bottom template, so that the template does not need to be supported during construction, the construction progress is accelerated, and the hidden beam steel bar truss is higher than the height between the plate surface distribution rib and the plate bottom stress rib along the direction perpendicular to the bottom template, namely, the hidden beam steel bar truss is heightened, and then the reinforced concrete prefabricated layer of the bottom template is combined, so that larger cross-sectional moment resistance can be obtained, and the floor can resist larger concrete pouring load and other construction load in the construction stage, the span of the floor is enlarged, meanwhile, the hollow structure is arranged, the weight of the whole floor is reduced, and the service span of the floor is further enlarged.

In some embodiments, as shown in fig. 1, 2 or 3, the steel bar truss composite slab hollow floor system further comprises an insulation layer 50, and the insulation layer 50 is disposed at the hollow structure between two adjacent hidden beam steel bar trusses 40.

Above-mentioned heat preservation insulating layer 50 chooses the PVC board for use, because traditional superstructure comprises concrete and reinforcing bar mostly, whole heavier and not have the heat preservation effect, this application is at first placed heat preservation insulating layer 50 in the hollow structure department between two adjacent hidden beam steel bar trusses 40, then pours concrete layer 60, pours the superstructure after accomplishing and becomes the hollow superstructure of taking the hidden beam promptly, the heat preservation insulating effect of whole superstructure obtains certain improvement like this, and has replaced the mid portion concrete with heat preservation insulating layer 50 body and also further reduced the weight of whole superstructure, has increaseed the use span of whole superstructure.

In some embodiments, the steel bar truss composite hollow floor system further comprises a sound insulation layer, wherein the sound insulation layer is arranged on one side of the heat insulation layer 50 facing the bottom formwork 10.

The sound-absorbing polyester fiber board is similar to other porous materials in sound-absorbing characteristic, the sound-absorbing coefficient is increased along with the increase of frequency, the sound-absorbing coefficient of high frequency is large, and the sound-absorbing performance of the material can be greatly improved by the back of the sound-absorbing polyester fiber board and the space sound-absorbing body formed by the sound-absorbing polyester fiber board. The noise reduction coefficient is approximately 0.8-1.10, the sound-absorbing body is a broadband efficient sound-absorbing body, the sound-insulating effect of the whole floor system can be effectively improved, meanwhile, the polyester fiber sound-absorbing plate has two aspects of safety performance, on one hand, the polyester fiber sound-absorbing plate is excellent in mechanical property, light in weight and free from falling danger like fragments or fragments generated by fragile materials such as perforated gypsum boards, cement fiber pressure plates and the like after being damaged by impact, on the other hand, the harmful substances are released, the standard requirement of the formaldehyde release amount is less than or equal to 1.5/1 through detection of relevant departments of China, and the detection result is 0.05/1. Meets the requirements of national standard GB18580-2001E1 grade, and is in line with direct application in personnel operation areas.

In some embodiments, the steel bar truss composite hollow floor system further comprises a waterproof layer disposed on a side of the thermal insulation layer 50 facing the concrete layer 60.

The waterproof layer can be made of polyvinyl chloride foam board, and the polyvinyl chloride foam board is made of PVC material with high density, high strength, non-crystal structure and other material characteristics. Use polyvinyl chloride cystosepiment to finish laying owing to adopt the bonding formula to scald the form of connecing to form a new waterproof layer, it has drainage function again to have secondary waterproof function promptly, general waterproofing membrane does not have simultaneously and separates a root function, and polyvinyl chloride cystosepiment is because density is big, has stronger root nature of separating, can be according to separating the thickness of root requirement adjustment membrane, reach and separate a root effect, furthermore, because polyvinyl chloride cystosepiment is the amorphous structure, thereby it can effectively destroy material surface structure and make two retes can effectively dissolve together to adopt special glue water, play waterproof root function of separating. The PVC foam board can adopt a mechanical ironing connection mode, and has high compressive strength which is 1.5 times that of a PS coiled material with the same thickness and 2.5 times that of an HDPE material.

Because the polyvinyl chloride foam board can be manufactured only by cutting into the required pattern with scissors, common workers can operate the polyvinyl chloride foam board, the asphalt wood board needs to be manufactured by a special woodworker by using a woodworker machine, asphalt needs to be coated after the manufacture is finished, the required asphalt needs to be put in a container to be heated and boiled into liquid, a large amount of harmful gas is generated in the heating process, the pollution to the surrounding atmosphere is caused, the polyvinyl chloride closed-cell foam board has no pollution, and the polyvinyl chloride foam board can be folded into a roll for transportation, in addition, the weight is light, the wood is heavy, and the state executes the forest protection policy, but some areas do not produce wood at all, the wood needs to be transferred from different places, the wood transportation cost is increased, the wood price is increased, the price of the asphalt wood board is increased along with the increase of the wood price, the vinyl chloride foam boards accumulated on the same side are much lighter than wood, so that the polyvinyl chloride closed cell foam boards are much more convenient to transport than wood.

In some embodiments, as shown in fig. 2, the hidden beam steel bar truss 40 in the present application includes a square bar 401, an upper chord steel bar 402 and a lower chord steel bar 403, the square bar 401 is disposed between the slab bottom stressing bar 20 and the slab surface distributing bar 30, and the upper chord steel bar 402 and the lower chord steel bar 403 are disposed in the square bar 401.

In order to improve the strength of the hidden beam steel bar truss 40, the steel bar truss composite slab hollow floor system further comprises a first reinforcing rib, and the first reinforcing rib is arranged on the square rib 401.

In some embodiments, as shown in fig. 3, the plate bottom stress rib 20 in the present application includes a vertical rib 201 and a horizontal rib 202, and the vertical rib 201 and the horizontal rib 202 are arranged in a crossing manner.

In order to improve the strength of the plate bottom stress rib 20, the hollow floor system of the steel bar truss composite slab in the application further comprises a second reinforcing rib which is arranged between the vertical rib 201 and the transverse rib 202.

In some embodiments, the steel bar truss composite slab hollow floor system further comprises a fireproof layer, and the fireproof layer is arranged on one side, away from the concrete layer 60, of the bottom formwork 10.

Above-mentioned flame retardant coating can select inorganic PLASTIC LAMINATED, and the setting of inorganic PLASTIC LAMINATED can effectively improve the fire prevention effect of whole superstructure.

To sum up, this application utility model when using:

firstly, the bottom formwork 10 is transported to a construction site, then the slab bottom stress bar 20 is fixed on the bottom formwork 10, then the hidden beam steel bar trusses 40 are fixed on the slab bottom stress bar 20, after the hidden beam steel bar trusses 40 are fixed, the heat insulation layer 50 is placed at the hollow structure between every two adjacent hidden beam steel bar trusses 40, then the slab surface distribution bars 30 are fixed on the hidden beam steel bar trusses 40, at the moment, the distance between the slab surface distribution bars 30 and the slab bottom stress bar 20 is smaller than the height of the hidden beam steel bar trusses 40, and finally the concrete layer 60 is poured.

The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.

The above-mentioned embodiments only represent some embodiments of the present invention, and the description thereof is specific and detailed, but not to be construed as limiting the scope of the present invention. It should be noted that, for those skilled in the art, without departing from the spirit of the present invention, several variations and modifications can be made, which are within the scope of the present invention. Therefore, the protection scope of the present invention should be subject to the appended claims.

Claims

1. The utility model provides a hollow superstructure of steel bar truss superimposed sheet which characterized in that includes: the concrete slab comprises a bottom template (10), slab bottom stress ribs (20), slab surface distribution ribs (30), hidden beam steel bar trusses (40) and a concrete layer (60);

the bottom template (10) and the concrete layer (60) are arranged at intervals relatively, the plate bottom stress ribs (20) are arranged on the bottom template (10), and the plate surface distribution ribs (30) are arranged on the concrete layer (60);

a plurality of hidden beam steel bar trusses (40) are arranged between the slab bottom stress rib (20) and the slab surface distribution rib (30) at intervals, and a hollow structure is arranged between every two adjacent hidden beam steel bar trusses (40);

the hidden beam steel bar truss (40) is perpendicular to the height of the bottom formwork (10) in the direction and is larger than the height between the plate surface distribution ribs (30) and the plate bottom stress ribs (20).

2. The hollow floor slab with the steel bar truss composite slabs as claimed in claim 1, further comprising a thermal insulation layer (50), wherein the thermal insulation layer (50) is arranged at the hollow structure between two adjacent hidden beam steel bar trusses (40).

3. The hollow floor slab with the steel bar truss laminated slabs as claimed in claim 2, further comprising a sound insulation layer disposed on a side of the heat insulation layer (50) facing the bottom formwork (10).

4. The hollow floor slab with the steel bar truss composite slabs as claimed in claim 2, further comprising a waterproof layer disposed on a side of the heat insulating layer (50) facing the concrete layer (60).

5. The steel bar truss laminated slab hollow floor as claimed in claim 1, wherein the hidden beam steel bar truss (40) comprises square bars (401), upper chord bars (402) and lower chord bars (403), the square bars (401) are arranged between the slab bottom stress bars (20) and the slab surface distribution bars (30), and the upper chord bars (402) and the lower chord bars (403) are arranged in the square bars (401).

6. The hollow floor system of the steel bar truss composite slab as claimed in claim 5, further comprising a first reinforcing rib, wherein the first reinforcing rib is arranged on the square rib (401).

7. The hollow floor system of the steel bar truss composite slab as claimed in claim 1, wherein the slab bottom stress rib (20) comprises a vertical rib (201) and a horizontal rib (202), and the vertical rib (201) and the horizontal rib (202) are arranged in a crossed manner.

8. The hollow floor slab with the steel bar truss composite plates as claimed in claim 7, further comprising a second reinforcing rib, wherein the second reinforcing rib is arranged between the vertical rib (201) and the transverse rib (202).

9. The hollow floor slab with the steel bar trusses and the laminated slab as claimed in claim 1, further comprising a fire-proof layer provided on a side of the bottom form (10) facing away from the concrete layer (60).

10. The hollow floor system of the steel bar truss composite slab as claimed in claim 1, further comprising a third reinforcing rib, wherein the third reinforcing rib is arranged on the plate surface distribution rib (30).