Unidirectional single rib beam prefabricated bottom plate and hollow floor structure

Abstract

The utility model belongs to the technical field of building construction, and particularly relates to a one-way single rib beam prefabricated bottom plate which comprises a prefabricated plate, a plurality of prefabricated plate steel bars are embedded in the prefabricated plate, and the prefabricated plate steel bars are arranged at intervals in the length direction and the width direction of the prefabricated plate. Only one rib beam is integrally formed on the prefabricated plate in a pouring mode, a plurality of stirrups and a plurality of longitudinal bars are embedded in the rib beam, the stirrups are arranged at intervals in the length direction of the rib beam, the stirrups extend upwards to the outside of the rib beam from the bottom of the rib beam, the upper ends of the stirrups are bent inwards to form openings, and the longitudinal bars penetrate through all the stirrups and are symmetrically fixed to the inner sides of the stirrups. The problems that in the prior art, a prefabricated bottom plate is large in production difficulty, low in standardization degree and high in transportation cost are solved.

Description

Technical Field

[0001] The utility model belongs to the technical field of building construction, and in particular relates to a unidirectional single-rib beam prefabricated bottom plate and a hollow floor structure. Background Art

[0002] Hollow floor is a new type of floor with light weight and large span. It not only provides flexible application space, but also can increase floor stiffness, shorten construction period, improve sound insulation effect and reduce structural cost. It has broad application prospects.

[0003] The invention patent with patent number CN117432116A discloses a prefabricated unidirectional rib-beam assembled hollow floor structure, including a floor bottom plate and a floor panel, the floor bottom plate includes a plurality of prefabricated modules connected by splicing, the prefabricated modules include a bottom plate, a plurality of ribs are arranged on the bottom plate, the ribs divide the bottom plate into a first connecting section, a plurality of hollow sections, and a second connecting section in sequence; the tops of two adjacent ribs are provided with a cover plate, and the two adjacent ribs, the cover plate and the hollow section of the bottom plate together constitute a cavity unit; the first connecting section and the second connecting section of two adjacent bottom plates are connected by a cover plate. The connecting sections are spliced ​​with each other, and the first connecting section and the second connecting section are both provided with support assemblies. A core mold is installed on the top of the support assembly, and a gap for casting connecting parts is left between two adjacent core molds. The floor panel and the floor bottom plate are connected into one by the connecting parts. A plurality of rib beams are provided on the bottom plate of the above-mentioned prefabricated module. The structure of the prefabricated module is complex and the size is large. The factory needs to use large-size molds for molding during prefabrication production. The prefabrication production is difficult, resulting in a low degree of standardization. In addition, the prefabricated module is heavy, and large-scale lifting equipment is required for transportation, which has high transportation costs. Utility Model Content

[0004] The utility model aims to provide a one-way single-rib beam prefabricated floor and hollow floor structure to solve the problems of the prior art that the prefabricated floor is difficult to produce, has a low degree of standardization and has a high transportation cost.

[0005] In order to solve the above technical problems, the utility model provides the following technical solutions:

[0006] A one-way single-rib prefabricated base plate comprises a prefabricated plate, in which a plurality of prefabricated plate steel bars are embedded, and the plurality of prefabricated plate steel bars are arranged at intervals along the length and width directions of the prefabricated plate; the prefabricated plate is integrally cast with one and only one rib beam, in which a plurality of stirrups and a plurality of longitudinal bars are embedded, and the plurality of stirrups are arranged at intervals along the length direction of the rib beam, the stirrups extend upward from the bottom of the rib beam to the outside of the rib beam, the upper ends of the stirrups are bent inwards to form openings, and the plurality of longitudinal bars pass through all the stirrups and are symmetrically fixed on the inner sides of the stirrups.

[0007] Furthermore, step limiting structures are provided on the left and right sides of the rib beam.

[0008] Furthermore, a plurality of supporting members are embedded in the prefabricated board, and the plurality of supporting members are respectively arranged on both sides of the rib beam, and the supporting members extend upward from the inside of the prefabricated board to the outside of the prefabricated board.

[0009] Furthermore, the support member adopts stirrup bars or steel trusses.

[0010] A hollow floor structure comprises a floor base plate and a floor panel; the floor base plate is formed by splicing a plurality of the above-mentioned unidirectional single-rib beam prefabricated base plates, and a sealing strip is provided at the splicing position of the floor base plate; a cover plate is provided between two adjacent rib beams of the floor base plate, and two ends of the cover plate are respectively placed on the step limiting structures of the two rib beams; the floor panel is cast on site on top of the rib beam and the cover plate.

[0011] A hollow floor structure comprises a floor base plate and a floor panel; the floor base plate is formed by splicing a plurality of the above-mentioned unidirectional single-rib beam prefabricated base plates, a connecting beam is provided at the splicing position of the floor base plates, the cross section of the connecting beam is in an inverted "T" shape, a steel mesh is provided in the connecting beam, and the steel mesh is fixed on a stirrup bar or a steel truss; core molds are provided on both sides of the connecting beam, and the core molds are fixed on the top of the stirrup bar or the steel truss; the floor panel and the connecting beam are integrally cast and formed on the construction site, and the floor panel is cast on the top of the rib beam, the core mold and the cast-in-place beam.

[0012] Compared with the prior art, the utility model has the following beneficial technical effects:

[0013] The prefabricated bottom plate of the utility model is only formed with one rib beam. Compared with the bottom plate with multiple prefabricated rib beams in the prior art, the structure is simpler, which can not only reduce the steps of factory prefabrication production and improve production efficiency, but also make the production of prefabricated bottom plates more standardized, and effectively reduce the size and weight of the prefabricated bottom plates, so that there is no need to use large-scale lifting equipment during transportation, which is convenient for transportation and effectively saves transportation costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 This is a schematic structural diagram of the first embodiment of the present utility model;

[0015] Figure 2 To adopt Figure 1 The schematic diagram of the hollow floor structure of the floor bottom plate;

[0016] Figure 3 This is a schematic diagram of the structure of the second embodiment of the present utility model;

[0017] Figure 4 To adopt Figure 3 The schematic diagram of the hollow floor structure of the floor bottom plate;

[0018] Figure 5 This is a schematic diagram of the structure of the third embodiment of the present utility model;

[0019] Figure 6 To adopt Figure 4 Schematic diagram of the hollow floor structure of the floor base. DETAILED DESCRIPTION

[0020] The following is further described in detail through specific implementation methods:

[0021] The reference numerals in the drawings of the specification include:

[0022] Precast slab 1, precast slab reinforcement 11, stirrup reinforcement 12, reinforcement truss 13;

[0023] Rib beam 2, stirrups 21, longitudinal reinforcement 22, limiting structure 23;

[0024] Floor bottom plate 3, joint 31;

[0025] Floor panel 4, panel reinforcement 41;

[0026] Cover plate 5;

[0027] Connecting beam 6, steel mesh 61;

[0028] Core mold 7. Embodiment 1

[0029] like Figure 1 As shown, a one-way single-rib prefabricated base plate comprises a prefabricated plate 1, in which a plurality of prefabricated plate steel bars 11 are embedded, and the plurality of prefabricated plate steel bars 11 are arranged at intervals along the length and width directions of the prefabricated plate 1; the prefabricated plate 1 is integrally cast with and has only one rib beam 2, in which a plurality of stirrups 21 and a plurality of longitudinal bars 22 are embedded, and the plurality of stirrups 21 are arranged at intervals along the length direction of the rib beam 2, the stirrups 21 extend upward from the bottom of the rib beam 2 to the outside of the rib beam 2, and the upper ends of the stirrups 21 are bent inward to form openings. In this embodiment, four longitudinal bars 22 are arranged, and the four longitudinal bars 22 pass through all the stirrups 21 and are symmetrically fixed on the inner sides of the stirrups 21; step limiting structures 23 are provided on the left and right sides of the rib beam 2, and in this embodiment, a support plate is fixedly installed on the side of the rib beam 2 by nails, and the top of the support plate and the side of the rib beam 2 form a step limiting structure 23.

[0030] The prefabricated bottom plate of the utility model is only formed with one rib beam 2, and has a simple structure. It can not only reduce the steps of factory prefabrication production and improve production efficiency, but also make the production of prefabricated bottom plates more standardized, and effectively reduce the size and weight of the prefabricated bottom plates, so that there is no need to use large-scale lifting equipment during transportation, which is convenient for transportation and effectively saves transportation costs.

[0031] like Figure 2 As shown, a hollow floor structure includes a floor bottom plate 3 and a floor panel 4; the floor bottom plate 3 is composed of multiple pieces Figure 1The one-way single-rib beam 2 shown is spliced ​​with prefabricated bottom plates, and the splicing 31 of the floor bottom plate 3 is sealed with sealant; a cover plate 5 is provided on two adjacent rib beams 2 of the floor bottom plate 3, and the cover plate 5 is placed on the step limiting structure 23 formed by the support plate and the rib beam 2; the floor panel 4 is cast on site on the top of the rib beam 2 and the cover plate 5, and two layers of mesh steel support structure are provided in the floor panel 4, and the two layers of mesh steel support structure are tied to the stirrups 21 of the rib beam 2 on site.

[0032] The hollow floor structure of this embodiment has high construction efficiency because the joints of the floor bottom plate 3 are sealed only by sealant, but there are splicing marks at the joints, and the sealing effect of the hollow floor is poor. It is only suitable for buildings with low requirements on appearance, sound insulation and thermal insulation, such as ordinary factory buildings. Embodiment 2

[0033] like Figure 3 As shown, a one-way single-rib beam prefabricated base plate is shown. The difference between this embodiment and the first embodiment is that no step limiting structure 23 is set on both sides of the rib beam 2, and a plurality of support members are embedded in the prefabricated plate 1. The plurality of support members are respectively arranged on both sides of the rib beam 2, and the support members extend upward from the inside of the prefabricated plate 1 to the outside of the prefabricated plate 1. The support members of this embodiment adopt stirrups 12.

[0034] like Figure 4 As shown, a hollow floor structure includes a floor bottom plate 3 and a floor panel 4; the floor bottom plate 3 is composed of multiple pieces Figure 3 The one-way single-rib beam 2 shown is formed by splicing prefabricated bottom plates, and a connecting beam 6 is provided at the joint 31 of the floor bottom plate 3. The cross-section of the connecting beam 6 is inverted "T" shape, and a steel mesh 61 is provided in the connecting beam 6. The steel mesh 61 is fixed on the stirrup 12 at the construction site; core molds 7 are provided on both sides of the connecting beam 6, and the core molds 7 are fixed on the top of the stirrup 12; the floor panel 4 and the connecting beam 6 are integrally cast at the construction site, and the floor panel 4 is cast on the top of the rib beam 2, the core mold 7 and the cast-in-place beam. A two-layer mesh steel support structure is provided in the floor panel 4, and the two-layer mesh steel support structure is tied to the stirrup 21 of the rib beam 2 at the construction site. Embodiment 3

[0035] like Figure 5 As shown, a one-way single-rib beam prefabricated bottom plate, the difference between this embodiment and the second embodiment is that the support member adopts a steel truss 13.

[0036] like Figure 6 As shown, a hollow floor structure is shown. The difference between this embodiment and the second embodiment is that the steel mesh 61 is tied to the steel truss 13 at the construction site, and the core mold 7 is fixed on the top of the steel truss 13.

[0037] The joints of the hollow floor structures of Examples 2 and 3 are connected by pouring concrete on site, so that the connecting beams 6 connect the floor base plate 3 and the floor panel 4 into one, and there are no splicing marks at the joints. The hollow floor has good sealing performance and is suitable for buildings with high requirements on appearance, sound insulation and thermal insulation effects, such as schools, conference halls, hotels, etc.

[0038] The above is only an embodiment of the utility model, and the common knowledge such as the known specific technical solutions and / or characteristics in the solution is not described in detail here. It should be pointed out that for those skilled in the art, without departing from the technical solution of the utility model, several deformations and improvements can be made, which should also be regarded as the protection scope of the utility model, and these will not affect the effect of the implementation of the utility model and the practicality of the patent. The scope of protection required by this application shall be based on the content of its claims, and the specific implementation methods and other records in the specification can be used to interpret the content of the claims.

Claims

1. A one-way single-rib beam prefabricated bottom plate, characterized in that: It includes a precast panel, in which a plurality of precast panel steel bars are embedded, and the plurality of precast panel steel bars are spaced apart along the length and width directions of the precast panel; the precast panel is integrally cast with one and only one rib beam, in which a plurality of stirrups and a plurality of longitudinal bars are embedded, and the plurality of stirrups are spaced apart along the length direction of the rib beam, the stirrups extend upward from the bottom of the rib beam to the outside of the rib beam, the upper ends of the stirrups are bent inwards to form openings, and the plurality of longitudinal bars pass through all the stirrups and are symmetrically fixed on the inner sides of the stirrups.

2. The one-way single-rib beam prefabricated bottom plate according to claim 1, characterized in that: The left side and the right side of the rib beam are both provided with step limiting structures.

3. The one-way single-rib beam prefabricated bottom plate according to claim 1, characterized in that: The prefabricated board is also pre-embedded with a plurality of support members, which are respectively arranged on both sides of the rib beam, and the support members extend upward from the inside of the prefabricated board to the outside of the prefabricated board.

4. The one-way single-rib beam prefabricated bottom plate according to claim 3, characterized in that: The support member is a stirrup bar or a steel bar truss.

5. A hollow floor structure, comprising a floor bottom plate and a floor panel, characterized in that: The floor slab is formed by splicing a plurality of prefabricated slabs of the one-way single-rib beam as described in claim 2, and sealing strips are provided at the joints of the floor slabs; a cover plate is provided between two adjacent rib beams of the floor slab, and both ends of the cover plate are respectively placed on the step limiting structures of the two rib beams; the floor panel is cast on site on top of the rib beams and the cover plate.

6. A hollow floor structure, comprising a floor bottom plate and a floor panel, characterized in that: The floor slab is formed by splicing a plurality of prefabricated slabs of the one-way single-rib beam as described in claim 4. A connecting beam is provided at the joint of the floor slab. The cross section of the connecting beam is in an inverted "T" shape. A steel mesh is provided in the connecting beam, and the steel mesh is fixed on the stirrup or steel truss. Core molds are provided on both sides of the connecting beam, and the core molds are fixed on the top of the stirrup or steel truss. The floor panel and the connecting beam are integrally cast on the construction site, and the floor panel is cast on the top of the rib beam, the core mold and the cast-in-place beam.

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