Partially laminated concrete prefabricated floor slab

Abstract

The invention discloses a partially laminated concrete prefabricated floor slab. The partially laminated concrete prefabricated floor slab comprises a bottom plate, a rib plate and a laminated layer, the rib plate is arranged in a deflection deformation area of the bottom plate, the laminated layer is arranged on the bottom plate and is flush with the rib plate, and pipelines can be pre-embedded in the laminated part and are positioned on the periphery of the rib plate. According to the concrete laminated slab, the rib plate is arranged in the deflection deformation area of the bottom plate, the rigidity and strength of the whole laminated slab can be effectively enhanced, then, in the construction process, the pipelines are arranged on the slab and around the rib plate, the problem that an existing bottom plate needs pipeline holes is solved, and the construction efficiency of the pipelines is improved. And finally, the rib plate, the bottom plate and the laminated layer form a whole, so that the overall performance of the laminated plate is ensured.

Description

Technical Field

[0001] The invention relates to the technical field of assembled concrete structure design, in particular to a partially laminated prefabricated concrete floor slab. Background Art

[0002] In today's actual projects, the most commonly used composite slabs are mainly reinforced truss concrete composite slabs, prefabricated ribbed composite slabs, etc. However, existing floor slabs have many disadvantages. The reinforced truss concrete composite slab is a composite slab base made by connecting the steel truss and the concrete base plate together, and the assembled floor slab is formed by pouring concrete on it. Therefore, the reinforced truss concrete composite slab requires a large amount of steel and is costly. In addition, during construction, the upper chord steel bar clearance of the steel truss is low, which will hinder the layout of the lower pipelines. Prefabricated ribbed composite slabs need to open holes in the ribs, resulting in reduced density near the holes and more complicated construction.

[0003] In view of the above problems, it is necessary to design a composite plate that is easy to construct and has low manufacturing cost, and is convenient for pipeline layout. Summary of the invention

[0004] In view of the problems existing in the prior art, the present invention provides a partially laminated precast concrete floor slab, in which a rib plate is arranged at the center of the base plate to improve the rigidity of the base plate, and at the same time, a pipeline installation space is formed on the rib plate, thereby reducing the current pouring time and improving construction efficiency.

[0005] The present invention is achieved through the following technical solutions:

[0006] A partially laminated prefabricated concrete floor slab comprises a bottom slab, a rib slab and a laminated layer;

[0007] The ribs are arranged in the disturbance deformation area of ​​the bottom plate, the superimposed layer is arranged on the bottom plate and is flush with the ribs, pipelines are buried in the superimposed layer, and the pipelines are arranged around the ribs.

[0008] Preferably, the rib is arranged at the center of the bottom plate.

[0009] Preferably, the base plate comprises a concrete plate and a steel mesh embedded therein.

[0010] Preferably, the steel mesh comprises a plurality of transverse steel bars and longitudinal steel bars, and nodes of the transverse steel bars and the longitudinal steel bars are connected to each other.

[0011] Preferably, the ribs are circular ribs, polygonal ribs or rectangular ribs.

[0012] Preferably, the distance between each edge of the rib plate and the center of the bottom plate is smaller than the distance between each edge of the bottom plate and the center.

[0013] Preferably, the bottom plate and the ribs are prefabricated in one piece.

[0014] Preferably, the laminated layer is a concrete layer.

[0015] A floor slab comprises the partially laminated prefabricated concrete floor slab.

[0016] Compared with the prior art, the present invention has the following beneficial technical effects:

[0017] The present invention provides a partially laminated concrete prefabricated floor slab, comprising a ribbed base plate and a laminated layer, wherein the ribs are arranged in the area where the base plate disturbance is the largest, and the thickness of the base plate disturbance area is changed by the ribs, thereby improving the strength of the entire base plate, thereby achieving variable stiffness of the ribbed concrete base plate; the ribs protrude from the base plate surface, and a pipeline layout area is formed around the ribs, in which the pipelines are arranged, which facilitates the arrangement of the pipelines around the ribs, thereby solving the problem that the existing base plate needs to have pipeline holes on the ribs, greatly improving the layout efficiency of the pipelines, and improving the construction efficiency; secondly, the ribbed base plate is integrally formed in a prefabricated manner, and then the laminated layer is cast on site to form a laminated plate, and the base plate, ribs and laminated layer form an integral structure to jointly bear the service load. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a structural schematic diagram of the bottom plate and rib plate of the present invention;

[0019] Figure 2 It is a structural schematic diagram of the composite plate of the present invention.

[0020] In the figure: 1, bottom plate; 2, rib plate; 3, overlapping layer. DETAILED DESCRIPTION

[0021] The present invention will be further described in detail below in conjunction with the accompanying drawings, which are intended to explain the present invention rather than to limit it.

[0022] See also Figure 1-2 A partially laminated prefabricated concrete floor comprises a base plate 1, a rib plate 2 and a laminated layer, wherein the rib plate is arranged in a disturbance deformation area of ​​the base plate 1, and the laminated layer is arranged on the base plate and is flush with the rib plate.

[0023] The concrete composite slab can effectively enhance the rigidity and strength of the entire composite slab by arranging ribs in the disturbance deformation area of ​​the bottom plate. As a reinforcing structure, the ribs can withstand greater loads, thereby improving the performance and safety of the composite slab. Secondly, the design of the ribs makes the stress distribution of the composite slab more uniform when it is under load. This helps to reduce local damage caused by stress concentration and improve the overall stability of the composite slab. Secondly, during the construction process, pipelines are arranged on the plate and around the ribs, which solves the problem of pipeline holes in the existing bottom plate and improves the construction efficiency of the pipelines. Finally, the ribs, bottom plate and composite layer form a whole, which ensures the overall performance of the composite slab. This integrity enables the composite slab to give full play to the synergistic effect of each part when it is under load, thereby improving the bearing capacity and stability of the entire structure.

[0024] The base plate and rib plates are produced in a prefabricated manner, and can be produced in a standardized and large-scale manner in the factory, thereby improving production efficiency. In addition, due to the presence of the rib plates, there is no need to set up too many temporary supports during construction, which further simplifies the construction process and shortens the construction period. Secondly, the prefabricated concrete composite slab with ribbed base plates can reduce the amount of concrete pouring on site, reduce material consumption and labor costs. The concrete composite slab of the partially laminated concrete prefabricated floor slab can achieve a higher material utilization rate during the production process, reducing resource waste.

[0025] The rib is arranged at the center of the bottom plate. Since the deformation of the center of the bottom plate is the largest and the rigidity is the smallest, the rib 2 is arranged at the center of the bottom plate surface, so that the thickness of the center of the bottom plate is increased, and the rigidity of the central area of ​​the bottom plate is changed. The increased rigidity means that under the same load, the deformation of the center of the bottom plate will be reduced, which helps to maintain the stability and flatness of the structure. Secondly, the setting of the rib disperses the originally concentrated stress to a larger area, thereby reducing the stress peak and optimizing the stress distribution of the entire bottom plate. The optimization of stress distribution helps to reduce the risk of structural damage and improve the bearing capacity and service life of the bottom plate. The rib not only increases the thickness and rigidity of the bottom plate, but also provides additional support points. These support points help to transfer and disperse the load more effectively and reduce local overload phenomena.

[0026] The ribs are circular ribs, polygonal ribs or rectangular ribs, and the edges of the ribs are a certain distance away from the edges of the bottom plate, that is, the ribs as a whole are smaller than the bottom plate. Before constructing the overlapping layer, pipelines are arranged on the bottom plate around the ribs, which reduces the difficulty of pipeline construction and improves construction efficiency.

[0027] The base plate includes a concrete plate and a steel mesh embedded therein, wherein the steel mesh includes a plurality of transverse stress-bearing steel bars and longitudinal stress-bearing steel bars, and the nodes of the transverse stress-bearing steel bars and the longitudinal stress-bearing steel bars are bundled to form a steel mesh structure.

[0028] The laminated layer is a concrete layer poured on the bottom plate and located around the rib plate.

[0029] Example 1

[0030] A partially laminated prefabricated concrete floor slab comprises a bottom slab, a rib slab and a laminated layer.

[0031] The base plate is a rectangular structure with a length of 300 cm, a width of 120 cm and a thickness of cm. A prefabricated steel mesh is provided in the base plate. The model of the stress-bearing steel bars of the steel mesh is 8 mm HRB400 grade. The rib plate is arranged at the center of the base plate. The rib plate has a length of 150 cm, a width of 60 cm and a thickness of 6 cm. The length of the rib plate is arranged in the length direction of the base plate.

[0032] The superimposed layer is cast in situ on the top of the base plate and is located around the rib plate. The top surface of the superimposed layer is flush with the top surface of the rib plate, that is, the thickness of the superimposed layer is 6 cm, and pipelines are buried in the superimposed layer.

[0033] Example 2

[0034] A floor slab comprises the partially laminated prefabricated concrete floor slab.

[0035] The construction method of the floor slab comprises the following steps:

[0036] Step 1, prefabricate ribbed bottom plate;

[0037] The ribbed base plate is manufactured in a prefabricated factory. First, the steel mesh is bundled according to the size of the base plate, and a template is built according to the size of the base plate and the rib plate. The steel mesh is located in the template. Then concrete is poured in the template. After solidification, the template is removed to obtain the ribbed base plate.

[0038] Step 2: Build a support frame on the foundation, install the ribbed bottom plate on the top of the support frame by hoisting, arrange multiple ribbed bottom plates in sequence, and arrange overlapping steel bars between two adjacent ribbed bottom plates.

[0039] Step 3: construct pipelines on the base plate, and arrange the pipelines around the ribs of the base plate.

[0040] Step 4: Before pouring concrete, it is necessary to arrange the negative reinforcement of the support.

[0041] Step 5: Pour concrete on the bottom plate to form a cast-in-place layer. The thickness of the cast-in-place layer should be flush with the rib plate. After the concrete has initially set, it should be cured in time. During the curing period, the concrete surface should be kept moist to avoid drying and cracking.

[0042] The above contents are only for explaining the technical idea of ​​the present invention and cannot be used to limit the protection scope of the present invention. Any changes made on the basis of the technical solution in accordance with the technical idea proposed by the present invention shall fall within the protection scope of the claims of the present invention.

Claims

1. A partially laminated prefabricated concrete floor slab, characterized in that: Including base plate, rib plate and laminated layer; The ribs are arranged in the disturbance deformation area of ​​the bottom plate, the superimposed layer is arranged on the bottom plate and is flush with the ribs, pipelines are buried in the superimposed layer, and the pipelines are arranged around the ribs.

2. A partially laminated prefabricated concrete floor slab according to claim 1, characterized in that: The rib is arranged at the center of the bottom plate.

3. The partially laminated prefabricated concrete floor slab according to claim 1, characterized in that: The bottom plate comprises a concrete plate and a steel mesh embedded therein.

4. The partially laminated prefabricated concrete floor slab according to claim 1, characterized in that: The steel mesh includes a plurality of transverse steel bars and longitudinal steel bars, and nodes of the transverse steel bars and the longitudinal steel bars are connected to each other.

5. The partially laminated prefabricated concrete floor slab according to claim 1, characterized in that: The ribs are circular ribs, polygonal ribs or rectangular ribs.

6. The partially laminated prefabricated concrete floor slab according to claim 1, characterized in that: The distance between each edge of the rib plate and the center of the bottom plate is smaller than the distance between each edge of the bottom plate and the center.

7. The partially laminated prefabricated concrete floor slab according to claim 1, characterized in that: The bottom plate and the rib plate are prefabricated in one piece.

8. The partially laminated prefabricated concrete floor slab according to claim 1, characterized in that: The superimposed layer is a concrete layer.

9. A floor slab, characterized in that: The invention comprises the partially laminated prefabricated concrete floor slab as described in any one of claims 1 to 8.

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