CN215716435U

CN215716435U - Heat-preservation sound-insulation composite prefabricated bottom plate for concrete composite floor slab

Info

Publication number: CN215716435U
Application number: CN202121123561.2U
Authority: CN
Inventors: 梁虹; 郁文海; 黎力
Original assignee: Individual
Current assignee: Individual
Priority date: 2021-05-25
Filing date: 2021-05-25
Publication date: 2022-02-01
Anticipated expiration: 2031-05-25

Abstract

The utility model discloses a heat-insulation sound-insulation composite prefabricated bottom plate for a concrete composite floor slab, which comprises a prefabricated bottom plate, a heat-insulation sound-insulation plate and a polymer mortar protective layer; the heat-insulation sound-insulation board is arranged below the prefabricated bottom board, a polymer mortar protective layer is arranged below the heat-insulation sound-insulation board, and the heat-insulation sound-insulation board is connected with the prefabricated bottom board. Through the structural design of the heat-preservation sound-insulation composite prefabricated bottom plate, the composite prefabricated bottom plate can be free from arrangement of truss steel bars, and various (negative) problems caused by arrangement of the truss steel bars on the prefabricated bottom plate are avoided; through the structural design of the heat-preservation sound-insulation composite prefabricated bottom plate, the thickness of the prefabricated bottom plate is reduced, the steel bar configuration of the bottom plate can be optimized, the dead weight of the prefabricated bottom plate is reduced, and the manufacturing, transportation and installation efficiency of the prefabricated bottom plate is improved.

Description

Heat-preservation sound-insulation composite prefabricated bottom plate for concrete composite floor slab

Technical Field

The utility model belongs to the technical field of building energy conservation and fabricated floor slabs, and particularly relates to a heat-insulation sound-insulation composite prefabricated bottom plate for a concrete composite floor slab.

Background

In residential buildings, a large number of prefabricated components adopted by the existing fabricated floor slab are truss reinforced concrete composite bottom plates. The floor slab is used as a building enclosure structure component and needs to meet the building energy-saving and heat-insulating performance index and the green building sound-insulating performance index. The current common concrete floor slab heat insulation construction method (the heat transfer coefficient K is 3.04W/(m 2K)) can not meet the regulation index requirement and the floor slab sound insulation requirement of the existing energy-saving design.

For this purpose, it is necessary to provide a thermal and acoustic insulation system construction above the structural floor. The common laminated floor slab is made as shown in fig. 1, and comprises a PC prefabricated bottom plate 201, a concrete cast-in-place layer 202, a mortar leveling layer 204, an extruded polystyrene board insulation layer 205 and a fine aggregate concrete protection layer 206. And a steel bar truss 203 is arranged on the PC prefabricated bottom plate 201. The method has the advantages of increasing the influence on the net height of the room space, increasing the wet operation of a construction site and increasing the self weight of the floor slab.

The mode of agreeing with the industrialized construction is that the heat-insulation sound-insulation system is integrated with the concrete prefabricated bottom plate when the laminated bottom plate is produced in a factory to form a heat-insulation sound-insulation composite prefabricated bottom plate (TSDB for short) based on the floor heat-insulation sound-insulation and structure integration technology.

The laminated slab bottom plate is in transportation, hoist and mount in-process, and the steel bar truss provides rigidity for prefabricated bottom plate, and the truss reinforcing bar does not participate in floor atress calculation in the laminated floor design, only is required for component transportation and installation. The thickness c (15-20mm) of the concrete protective layer of the prefabricated bottom plate steel bar is a construction measure for meeting the durability requirement of a concrete member, and the section size of the part of the bottom plate does not participate in the stress calculation of the laminated floor slab.

Therefore, the truss steel bars of the composite floor slab increase the economic cost of the composite floor slab and reduce the production efficiency of the member prefabricating link. And in the floor transfer process, the problem that other floors are damaged due to the fact that the truss reinforcing steel bars are exposed outside exists.

SUMMERY OF THE UTILITY MODEL

The utility model aims to: to the technical problem that current situation assembled coincide floor exists in floor heat preservation sound insulation structure and prefabricated bottom plate preparation and transportation installation, provide a novel compound prefabricated bottom plate of heat preservation sound insulation, through the structural design of this compound prefabricated bottom plate for this compound prefabricated bottom plate still has comparable rigidity and has reduced prefabricated bottom plate thickness after getting rid of the truss reinforcing bar.

The purpose of the utility model is realized by the following technical scheme:

a heat-insulation sound-insulation composite prefabricated bottom plate for a concrete composite floor slab is composed of a prefabricated bottom plate, a polymer fiber mortar protective layer and a heat-insulation sound-insulation plate; the prefabricated bottom plate is not provided with a steel bar truss; the heat-preservation sound-insulation plate is arranged below the prefabricated bottom plate; and a polymer fiber mortar protective layer is arranged below the heat-insulating and sound-insulating plate, and the heat-insulating and sound-insulating plate is connected with the prefabricated bottom plate.

According to a preferred embodiment, the thickness of the steel reinforcement protection layer of the prefabricated base plate is less than 15 mm.

The utility model has the beneficial effects that: through the structural design of the heat-preservation sound-insulation composite prefabricated bottom plate, the composite prefabricated bottom plate still has considerable rigidity after the truss reinforcing steel bars are removed, and various problems existing in the manufacturing, transporting and installing processes of the prefabricated bottom plate when the truss reinforcing steel bars are arranged on the prefabricated bottom plate are avoided. Meanwhile, the protection effect of the heat-preservation and sound-insulation structural layer in the composite prefabricated bottom plate on the prefabricated bottom plate steel bars is based, so that the thickness of the concrete protective layer of the prefabricated bottom plate is reduced.

Drawings

FIG. 1 is a schematic view of a conventional composite floor slab and a heat and sound insulation structure;

FIG. 2 is a schematic view of the heat-insulating sound-insulating composite prefabricated bottom plate of the utility model;

FIG. 3 is a schematic view of a composite floor slab and a heat-insulating and sound-insulating structure according to the present invention;

the method comprises the following steps of 101-a laminated layer, 102-a prefabricated bottom plate, 103-a polymer fiber mortar protective layer, 104-a heat-preservation sound-insulation plate and 105-a pulling piece.

Detailed Description

The embodiments of the present invention are described below with reference to specific embodiments, and other advantages and effects of the present invention will be easily understood by those skilled in the art from the disclosure of the present specification. The utility model is capable of other and different embodiments and of being practiced or of being carried out in various ways, and its several details are capable of modification in various respects, all without departing from the spirit and scope of the present invention. It is to be noted that the features in the following embodiments and examples may be combined with each other without conflict.

It should be noted that, in order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some embodiments of the present invention, but not all embodiments. The components of embodiments of the present invention generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations.

Thus, the following detailed description of the embodiments of the present invention, presented in the figures, is not intended to limit the scope of the utility model, as claimed, but is merely representative of selected embodiments of the utility model. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

In the description of the present invention, it should also be noted that, unless otherwise explicitly specified or limited, the terms "disposed," "mounted," "connected," and "connected" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

In addition, it should be noted that, in the present invention, if the specific structures, connection relationships, position relationships, power source relationships, and the like are not written in particular, the structures, connection relationships, position relationships, power source relationships, and the like related to the present invention can be known by those skilled in the art without creative work on the basis of the prior art.

Example 1:

referring to fig. 2, the heat-insulating and sound-insulating composite prefabricated bottom plate for the concrete composite floor slab comprises a prefabricated bottom plate 102, a heat-insulating and sound-insulating plate 104, a polymer fiber mortar protective layer 103 and a tie piece 105.

Preferably, the prefabricated base plate 102 is not provided with truss reinforcements.

Preferably, the thermal and sound insulation board 104 is disposed under the prefabricated base plate 102.

Preferably, a polymer fiber mortar protective layer 103 (with an alkali-resistant glass fiber mesh cloth arranged inside) is arranged below the thermal insulation and sound insulation board 104. Because of the better adhesion of the polymer fiber mortar layer and the concrete prefabricated bottom plate, the formed composite prefabricated bottom plate has excellent integrity.

And the heat-insulation and sound-insulation structure (a reinforced surface layer structure formed by a cement foaming heat-insulation and sound-insulation plate, a polymer fiber mortar protective layer and an embedded alkali-resistant glass fiber mesh cloth) in the composite prefabricated bottom plate has higher strength. Therefore, based on the high-strength heat-insulation and sound-insulation structural layer and the good integrity of the heat-insulation and sound-insulation structural layer after the heat-insulation and sound-insulation structural layer and the prefabricated bottom plate are compounded, enough rigidity is provided for the prefabricated bottom plate 102, the rigidity provided for the prefabricated bottom plate can be equivalently replaced by truss steel bars, and the truss steel bars arranged on the prefabricated bottom plate are omitted.

The truss reinforcing bar on the compound prefabricated bottom plate of cancellation heat preservation sound insulation, its effect has: a) and a component manufacturing link: the steel bar material of the component is saved, and the production process of the component (without the manufacturing process of the truss steel bar) is simplified, so that the cost of the component is reduced, and the production efficiency of a factory is improved. b) And (3) component transportation link: because there is not exposed truss reinforcing bar on the prefabricated bottom plate, the component is not fragile, and lightens the component weight, reduces the cost of transportation. c) And (3) a component mounting link: the truss steel bars which do not participate in floor slab stress are eliminated, the structure of the fabricated floor slab is optimized, the self weight of the floor slab is reduced, and the cost of the floor slab is reduced; and the wrong confirmation of the hoisting point is also avoided, and the hoisting operation is simplified.

Furthermore, because the heat-insulating and sound-insulating structural layer is compounded with the concrete prefabricated bottom plate 102, the heat-insulating and sound-insulating structural layer replaces the rust prevention and fire resistance of the steel bar protective layer at the lower part of the common prefabricated bottom plate, so that the thickness C of the steel bar protective layer of the bottom plate is reduced to below 15mm from the common 15-20 mm. The thickness of the reinforced concrete protective layer of the prefabricated bottom plate is reduced due to the heat-insulation and sound-insulation structural layer, and the thickness of the synthesized TSDB bottom plate and the thickness of the synthesized composite floor plate are reduced by 5-10mm compared with that of the common prefabricated bottom plate and the composite floor plate under the same condition. Therefore, the self weight and the reinforcing bars of the floor slab are reduced, and the overall economic cost of the project is reduced.

Namely, the thickness C of the concrete protective layer of the prefabricated floor 102 is reduced based on the protective effect of the thermal insulation and sound insulation structural layer in the composite prefabricated floor on the prefabricated floor steel bars. The effect is as follows: 1) the thickness of the prefabricated bottom plate is reduced, the thickness of the composite floor slab can be actually reduced, and therefore the stress plate reinforcement configuration (most of the residential floor slab reinforcements are structural reinforcement reinforcements controlled by the floor slab thickness factors in the use working condition) can be reduced, the structural engineering building materials can be directly saved, and the building policy of energy-saving, environment-friendly and green buildings is met. 2) The thickness of the prefabricated bottom plate is reduced, and the self weight of the prefabricated bottom plate is reduced by 25 percent. In the stages of manufacturing, transporting and installing the bottom plate, the production efficiency is obviously improved in the whole process due to the fact that the weight of the bottom plate component is reduced; 3) the thickness of the prefabricated bottom plate is reduced, and the self weight of the composite floor slab is reduced by 12 percent. The dead weight of the composite floor slab is reduced, so that the dead load acting on the main structure beam, the wall, the column and the foundation is reduced, the structural member and the foundation design can be optimized, the cost is saved, and the manufacturing cost is reduced.

In summary, the two aspects are the construction modes of saving materials, saving energy, protecting environment and being green and low-carbon, and the scientific and technological innovation is dedicated to the realization of the carbon peak-reaching carbon neutralization target in the building industry.

The foregoing basic embodiments of the utility model and their various further alternatives can be freely combined to form multiple embodiments, all of which are contemplated and claimed herein. In the scheme of the utility model, each selection example can be combined with any other basic example and selection example at will.

The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the utility model, and any modifications, equivalents and improvements made within the spirit and principle of the present invention are intended to be included within the scope of the present invention.

Claims

1. A heat-insulation sound-insulation composite prefabricated bottom plate for a concrete composite floor slab is characterized by comprising a prefabricated bottom plate (102), a polymer fiber mortar protective layer (103) and a heat-insulation sound-insulation plate (104);

the prefabricated bottom plate (102) is not provided with a steel bar truss;

the heat-preservation and sound-insulation plate (104) is arranged below the prefabricated bottom plate (102); and a polymer fiber mortar protective layer (103) is arranged below the heat-insulating and sound-insulating plate (104), and the heat-insulating and sound-insulating plate (104) is connected with the prefabricated bottom plate (102).

2. The composite heat and sound insulation prefabricated bottom plate for the concrete composite floor slab as claimed in claim 1, wherein the thickness C of the steel bar protection layer of the prefabricated bottom plate (102) is less than 15 mm.