CN219196452U

CN219196452U - Assembled self-bearing prestress plate

Info

Publication number: CN219196452U
Application number: CN202222489747.0U
Authority: CN
Inventors: 邱伯谦
Original assignee: Changsha Juxing Light Weight Building Materials Co ltd
Current assignee: Hunan Wonderful Enterprise Incubation Port Co ltd
Priority date: 2022-09-20
Filing date: 2022-09-20
Publication date: 2023-06-16
Anticipated expiration: 2032-09-20

Abstract

The assembled self-bearing prestress plate is characterized in that the assembled self-bearing prestress plate is of a strip-shaped structure, end beams are arranged at two transverse ends of the assembled self-bearing prestress plate, the two end beams are arranged in parallel, side beams are arranged on two longitudinal sides of the assembled self-bearing prestress plate, the two side beams are arranged in parallel, the end beams are intersected with the side beams at end points, reinforcing steel bar reinforcements are exposed at the upper parts of the side beams, longitudinal prestress steel bars are arranged in the lower parts of the side beams, the longitudinal prestress steel bars penetrate through the end beams, at least one transverse rib which is connected with and perpendicular to the two side beams is arranged between the two end beams, the side beams and the transverse ribs jointly form a bearing framework, truss self-bearing superimposed sheet is arranged on the bearing framework, and the two ends of the truss self-bearing superimposed sheet and the exposed reinforcing steel reinforcement are welded into a whole, and the truss self-bearing superimposed sheet has the characteristics of avoiding high span, large requirements and the like.

Description

Assembled self-bearing prestress plate

Technical Field

The utility model relates to the technical field of light building materials, in particular to an assembled self-bearing prestress plate.

Background

When the existing steel structure factory building or large-span floor slab is constructed, a high formwork supporting mode is generally adopted, and the mode is low in construction speed and high in cost. In the technical field of the existing light building materials, the prestressed steel pipe truss superimposed sheet mainly comprises a prestressed concrete bottom plate and a grouting steel pipe truss, the characteristics of the reinforced steel bar truss superimposed sheet and the characteristics of the prestressed concrete superimposed sheet are combined, the problem of cracking of the bottom plate is solved by applying the prestress, and the problem of inverted arch of the grouting steel pipe truss is solved. The grouting steel pipe effectively improves the rigidity of the prefabricated bottom plate, reduces the thickness of the bottom plate, and has the advantages of light weight, high bearing capacity, good crack resistance, high production efficiency and the like, so that the concrete steel pipe truss superimposed sheet is increasingly widely applied in the building industry. However, such a laminated slab requires a frame pipe and a formwork at the time of construction, thus affecting the construction speed, and failing to realize the construction requirement of a large span. Therefore, development of a novel assembled self-bearing prestress plate is urgently needed.

Disclosure of Invention

Aiming at the defects of the prior art, the utility model provides an assembled self-bearing prestress plate, which has the characteristics of avoiding high formwork erection, realizing large-span building requirements and the like.

The technical scheme of the utility model is as follows:

the assembled self-supporting prestress plate is characterized in that the assembled self-supporting prestress plate is of a strip-shaped structure, end beams are arranged at two transverse ends of the assembled self-supporting prestress plate, the two end beams are arranged in parallel, side beams are arranged on two longitudinal sides of the assembled self-supporting prestress plate, the two side beams are arranged in parallel, the end beams are intersected with the side beams at end points, reinforcing steel bar reinforcements are exposed on the upper parts of the side beams, longitudinal prestress steel bars are arranged in the lower parts of the side beams, the longitudinal prestress steel bars penetrate through the end beams, at least one transverse rib which is connected with and perpendicular to the two side beams is arranged between the two end beams, the side beams and the transverse ribs jointly form a supporting framework, truss self-supporting superimposed sheet is arranged on the supporting framework, and two ends of the truss self-supporting superimposed sheet are welded with the exposed reinforcing steel bar reinforcements into a whole.

The beneficial effects of the utility model are as follows: when the assembled self-bearing prestress plate is applied, the end beams are lapped on the bearing structure, a plurality of assembled self-bearing prestress plates are arranged on the bearing structure of the same span side by side, the bearing structure can be a bearing beam or a bearing wall or a concrete beam of a steel structure, longitudinal prestress ribs are arranged in the lower part of the side beams of the assembled self-bearing prestress plate, and the side beams are tension zones in the whole floor. The transverse rib is connected with the two side beams, so that the side beams on the two sides are organically connected at the middle part, and the span of the whole assembled self-bearing prestress plate is larger during application.

By adopting the assembled self-bearing prestress plate, the side beam can be used as a stressed secondary beam of a bearing structure in the vertical direction and also can be used as a support of an upper truss self-bearing lamination plate, and a floor slab does not need a frame pipe and a template during construction, so that the support and the template are avoided;

the assembled self-bearing prestress plate can be welded in advance in factories, and the bearing framework and the truss self-bearing superimposed sheet can be transported separately, so that the assembled self-bearing prestress plate is convenient to stack and transport, avoids damage in the transportation process, and saves the transportation cost; in a construction site, paving the truss self-bearing superimposed sheet on a bearing framework, welding the truss self-bearing superimposed sheet with the exposed reinforcing steel bar reinforcements of the side beams of the bearing framework, and forming an integral assembled self-bearing prestress plate after welding, so that the structural strength of the assembled self-bearing prestress plate is enhanced; hoisting is carried out after welding is finished, so that the safety risk of the overhead working belt is avoided; after the assembled self-bearing prestress plate is arranged on the bearing structure, surface layer steel bars are arranged on the bearing structure, cast-in-situ concrete is poured on the bearing structure, and the composite floor slab is formed after the bearing structure is formed.

The assembled self-bearing prestressed plate can be stressed together with a post-cast concrete surface layer to form a laminated slab, and can also bear force independently.

The prestressed reinforcement is applied in the side beam, the pre-arching is performed, the deflection after stress is small, the comfort is good, the span of the floor slab is increased, and the span can be 1.5-2.5 times of that of a common prestressed steel pipe truss floor slab; the traditional floor construction adopts the steel pipe as a support formwork, so that a large amount of manpower and material resources are consumed, the speed is very slow after the construction, and meanwhile, a large amount of construction waste is generated after the later form removal. The utility model directly adopts the assembled self-bearing prestress plate, so that the construction speed of the floor slab is high, and meanwhile, additional formwork supporting and stripping are not needed, the whole construction site is clean and tidy, excessive construction waste is not generated, meanwhile, the load of the floor slab adopting the structure is high, the bearing capacity is high, and large-scale moving tools such as forklifts can be moved on the upper floor (non-floor layer) of an industrial factory building.

Due to the adoption of the prestress structure, the steel consumption of the whole floor slab is small: the main rib is provided with a prestress steel strand, and the strength design value of the prestress steel strand can reach 1320MPa, which is 3.67 times of that of the three-stage steel.

When the assembled self-bearing prestressed slab is used for constructing the floor slab, a plurality of floors can be penetrated and penetrated for running water construction, the construction period can be shortened, when the assembled self-bearing prestressed slab is installed, a crane is generally adopted for installing the assembled self-bearing prestressed slab from a first floor, and the assembled self-bearing prestressed slab is installed to an upper floor in sequence, so that the on-site hoisting process is simple and quick, the construction period is short, the door-type steel frame structure is adopted for the uppermost floor, the construction cost is low, and the investment cost is saved; the composite beam is high in strength, bearing capacity and floor rigidity, the beams and the plates can be connected together through embedded parts, cast-in-place concrete and the steel beams form the composite beam, the integrity is good, the safety reserve is large, the anti-seismic performance is good, and the safety is high; the floor slab after construction is more economical, safer and more reliable than the traditional floor slab.

The internal structure of the structure is uniform and isotropic; the steel structure has the advantages of accurate size, convenient installation, easy matching with related parts, high degree of coincidence between the actual working performance of the steel structure and the adopted theoretical calculation result, reliability and good stability.

The utility model is suitable for various assembled fast-assembling floors.

Preferably, the truss self-bearing superimposed sheet is formed by welding a truss on a steel plate.

Preferably, the exposed reinforcing steel reinforcement is laid down on the steel plate and welded with the steel plate as one body. Thus, the construction is more convenient.

Preferably, the truss self-bearing superimposed sheet is transversely arranged on the bearing framework.

Preferably, the truss self-bearing superimposed sheet is longitudinally arranged on the bearing framework.

Preferably, the transverse rib is one and equally divides the side edge beam to form a Chinese character 'ri' -shaped bearing framework structure.

Preferably, the number of the transverse ribs is two, and the two transverse ribs are close to the two end beams and have the same distance with the end beams to form the U-shaped bearing framework structure.

Preferably, the upper part of the longitudinal outer side surface of the side beam is provided with an inclined angle outwards, or the lower part of the longitudinal outer side surface of the side beam is provided with an inclined angle outwards. Two lower flange structures of two adjacent members and the inclination angle of the side wall jointly form a wedge-shaped structure, and post-cast concrete and the structures form a built-in structure.

Preferably, the lower part of the longitudinal outer side of the side beam protrudes to form a lower flange edge, and the bottom of the lower flange edge is flush with the bottom of the side beam. In this way, the longitudinal prestressed reinforcement is arranged at the lower part of the side edge beam, the lower outer edge structure which is the same with the side edge is arranged at the lower part of the side edge beam, so that the bond strength of the prestressed reinforcement is enhanced, and the foremost lower outer edge structure thereof ensures that when the member is applied, the two lower outer edge structures of two adjacent members are spliced together, the post-cast concrete can form cast-in-situ ribs in the gap formed by splicing the two lower outer edges, and the cast-in-situ ribs and the side edge beam spliced by the two lower outer edge structures jointly form the longitudinal prefabrication-cast-in-prefabrication sandwich beam. In addition, the cast-in-place part of the sandwich beam does not need to be supported by the mould when the outer flange structure is applied to the floor slab.

Preferably, the upper part of the longitudinal outer side of the side beam is protruded with an outer flange edge, and the width of the upper flange edge is smaller than that of the lower flange edge, and the upper flange edge and the lower flange edge form a C-shaped structure.

Preferably, the thickness of the lower flange edge near the side beam is larger than that of the outer side, so that an outer slope surface is formed. In this way, adjacent assembled self-bearing prestress plates are formed into a whole.

Preferably, an upper longitudinal bar is arranged in the upper part in the side beam, a lower longitudinal bar is arranged in the lower part, and the lower longitudinal bar is arranged below the longitudinal prestressed bar. Therefore, the protection thickness of the pre-stressed cast-in-place concrete is ensured, and meanwhile, the fire-resistant time of the pre-stress is prolonged when the pre-stress meets a fire disaster.

Preferably, the end beams or/and the side beams or/and the transverse ribs are internally provided with reinforcing steel bar meshes. Like this, there is the reinforcing bar net in end beam or the side beam, and the reinforcing bar net is in the reinforced concrete vertical beam or the reinforced concrete horizontal direction of overlapping the spandrel girder in vertical direction setting, has strengthened its structural strength.

Preferably, the reinforcing mesh is exposed from the upper portion of the end beam or/and cross rib. When the member is applied, the exposed reinforcing mesh part can be combined with the post-cast-in-situ surface layer, so that the post-cast surface layer and the floor slab form a whole.

Drawings

FIGS. 1 and 2 are schematic cross-sectional views of transverse arrangements of an assembled self-supporting prestress plate;

FIG. 3 is a schematic diagram of a first embodiment of the present utility model;

FIG. 4 is a schematic diagram of a second embodiment of the present utility model;

FIGS. 5 and 6 are schematic cross-sectional views of a longitudinal arrangement of the present utility model;

FIG. 7 is a schematic cross-sectional view of the present utility model;

FIG. 8 is a schematic cross-sectional view of the present utility model;

FIG. 9 is a schematic diagram of a third embodiment of the present utility model;

FIG. 10 is a schematic diagram of a fourth embodiment of the present utility model;

FIG. 11 is a diagram of a fifth embodiment of the present utility model;

FIG. 12 is a schematic diagram of a sixth embodiment of the present utility model;

wherein, 1 is the end beam, 2 is the side beam, 3 is vertical prestressing steel bar, 4 is the transverse rib, 5 is the reinforcing bar reinforcement that exposes, 6 is truss self-supporting superimposed sheet, 7 is lower outer flange structure, 8 is outer flange structure, 9 is upper portion longitudinal steel bar, 10 is lower portion longitudinal steel bar, 11 is vertical middle rib.

Detailed Description

The utility model is described in further detail below with reference to the accompanying drawings.

As shown in fig. 1-12, the assembled self-supporting prestress plate is of a strip-shaped structure, two transverse ends of the assembled self-supporting prestress plate are provided with end beams 1, the two end beams 1 are arranged in parallel, two side beams 2 are arranged on two longitudinal sides of the assembled self-supporting prestress plate, the end beams 1 and the side beams 2 are arranged in parallel, the end points of the two side beams 2 are intersected, reinforcing steel bar reinforcements 5 are exposed at the upper parts of the side beams 2, longitudinal prestress steel bars 3 are arranged in the lower parts of the side beams 2, the longitudinal prestress steel bars 3 penetrate through the end beams 1, at least one transverse rib which is connected with and perpendicular to the two side beams 2 is arranged between the two end beams 1, the two side beams 2 and the transverse rib 4 jointly form a supporting framework, truss self-supporting superimposed sheet 6 is arranged on the supporting framework, two ends of the truss self-supporting framework 6 and the exposed reinforcing steel bar reinforcements 5 are welded integrally, and the truss self-supporting framework 6 is welded on a steel plate.

As shown in fig. 3 and 4, the exposed reinforcing steel bar reinforcement 5 is laid down on the steel plate and welded with the steel plate into a whole, and the truss self-bearing superimposed sheet 6 is transversely arranged on the bearing framework.

As shown in fig. 9, the truss self-bearing superimposed sheet 6 is longitudinally arranged on a bearing skeleton.

As shown in fig. 4, the transverse rib 4 is one and equally divides the side beam 2 to form a bearing framework structure in a Chinese character 'ri'.

As shown in fig. 11, the number of the transverse ribs 4 is two, and the two transverse ribs 4 are close to the two end beams 1 and have the same distance with the end beams 1, so as to form a support framework structure in a shape of a Chinese character 'mu'.

As shown in fig. 2, the lower part of the outer side of the side beam 2 in the longitudinal direction is protruded to form a lower flange structure 7, the bottom of the lower flange structure is flush with the bottom of the side beam 2, the upper part of the outer side of the side beam 2 in the longitudinal direction is protruded with an outer flange structure 8, the width of the upper flange structure is smaller than that of the lower flange structure, the upper flange structure and the lower flange structure form a C-shaped structure, and the thickness of the side of the lower flange close to the side beam is larger than that of the outer side, so that an outer slope surface is formed.

As shown in fig. 1 and 2, an upper longitudinal bar 9 is arranged in the upper part of the side beam, a lower longitudinal bar 10 is arranged in the lower part, and the lower longitudinal bar 10 is arranged below the longitudinal prestressed bar 3.

The side beams 2 on both sides as shown in fig. 10 to 12 are provided with longitudinal middle ribs 11 parallel to the side beams 2.

The foregoing is illustrative of specific embodiments of the utility model and, for the purpose of illustration, not of the details of the device or structure described herein, it should be understood that the utility model may be practiced using conventional devices and methods known in the art.

Meanwhile, the above embodiments of the present utility model are only for illustrating the technical solutions of the present utility model, and are only an enumeration of the technical solutions of the present utility model, and are not intended to limit the technical solutions of the present utility model and the protection scope thereof. Modifications to the utility model as disclosed in the claims and the description should be considered as not exceeding the scope of the utility model as disclosed in the claims and the description, using equivalent technical means, equivalent equipment, etc.

Claims

1. The assembled self-supporting prestress plate is characterized in that the assembled self-supporting prestress plate is of a strip-shaped structure, end beams are arranged at two transverse ends of the assembled self-supporting prestress plate, the two end beams are arranged in parallel, side beams are arranged on two longitudinal sides of the assembled self-supporting prestress plate, the two side beams are arranged in parallel, the end beams are intersected with the side beams at end points, reinforcing steel bar reinforcements are exposed on the upper parts of the side beams, longitudinal prestress steel bars are arranged in the lower parts of the side beams, the longitudinal prestress steel bars penetrate through the end beams, at least one transverse rib which is connected with and perpendicular to the two side beams is arranged between the two end beams, the side beams and the transverse ribs jointly form a supporting framework, truss self-supporting superimposed sheet is arranged on the supporting framework, and two ends of the truss self-supporting superimposed sheet are welded with the exposed reinforcing steel bar reinforcements into a whole.

2. The fabricated self-supporting prestressed slab of claim 1, wherein said truss self-supporting superimposed sheet is a truss welded to a steel plate.

3. The fabricated self-supporting prestressed panel of claim 2, wherein the exposed reinforcement is laid down on the steel plate and welded to the steel plate as one body.

4. A fabricated self-supporting prestressed slab as claimed in claim 3, wherein said truss self-supporting superimposed sheet is transversely disposed on a supporting frame.

5. A fabricated self-supporting prestressed slab as claimed in claim 3, wherein said truss self-supporting superimposed sheet is longitudinally disposed on a supporting frame.

6. The assembled self-bearing prestressed slab of any one of claims 1-5, wherein said cross rib is a strip and said cross rib equally divides side beams to form a zigzag bearing skeleton structure.

7. The assembled self-bearing prestressed slab of any one of claims 1-5, wherein said cross ribs are two, said two cross ribs are adjacent to two end beams and are equidistant from the end beams, forming a mesh-shaped bearing skeleton structure.

8. The assembled self-supporting prestressed slab according to any one of claims 1-5, characterized in that the upper portion of the longitudinal outer side of said side rail is outwardly provided with an inclination angle or the lower portion of the longitudinal outer side of the side rail is outwardly provided with an inclination angle.

9. The assembled self-supporting prestressed slab according to any of claims 1-5, characterized in that the lower part of the longitudinal outer side of said side rail is bulged, forming a lower flange rim, the bottom of said lower flange rim being flush with the bottom of the side rail; or the upper part of the longitudinal outer side of the side beam is protruded with an outer flange edge, the width of the upper flange edge is smaller than that of the lower flange edge, and the upper flange edge and the lower flange edge form a C-shaped structure; or the thickness of the side of the lower flange edge close to the side beam is larger than that of the outer side, so that an outer slope surface is formed.

10. The assembled self-supporting prestressed slab according to any one of claims 1-5, characterized in that in the upper portion of said side rail an upper longitudinal bar is provided, in the lower portion a lower longitudinal bar is provided, which is arranged below the longitudinal prestressed bar; or reinforcing steel bar meshes are arranged in the end beams or/and the transverse ribs; or the reinforcing mesh is exposed from the upper parts of the end beams or/and the transverse ribs; or longitudinal middle ribs parallel to the side beams are arranged in the side beams at two sides.