Plane truss type sandwich thermal insulation composite floor slab

Abstract

The utility model provides a plane truss type sandwich heat preservation composite floor slab which comprises a prefabricated bottom plate concrete layer, a heat preservation layer, a post-pouring concrete layer and a plane steel bar truss. The thermal insulation layer is located on the upper surface of the prefabricated bottom plate concrete layer, and the post-pouring concrete layer is located on the upper surface of the thermal insulation layer. Bottom plate steel bars are arranged in the prefabricated bottom plate concrete layer, plate face steel bars are arranged in the post-pouring concrete layer, the lower ends of the plane steel bar trusses are bound or welded to the bottom plate steel bars, and the upper ends of the plane steel bar trusses are bound or welded to the plate face steel bars. The plane steel bar truss is composed of upper chord steel bars, lower chord steel bars and web member steel bars, the web member steel bars are bent to be corrugated, wave crests are welded to the upper chord steel bars, and wave troughs are welded to the lower chord steel bars. The plane steel bar trusses basically have no influence on the coverage range of the heat preservation layer, and the heat preservation performance is greatly improved.

Description

Technical Field

[0001] The utility model relates to the technical field of assembled buildings, in particular to a plane truss type sandwich insulation composite floor slab. Background Art

[0002] With the implementation of the development of "green buildings", the country's requirements for building energy conservation are getting higher and higher. In the past, only the exterior walls and roofs needed insulation, but now the floor slabs of each household also need insulation; therefore, each floor slab needs to be equipped with an insulation layer. According to the different locations of the insulation layer, there are two common construction methods: 1) The insulation layer is above the structural layer; 2) The insulation layer is below the structural layer. However, when the insulation layer is above the structural layer, because the insulation layer is generally made of relatively loose and soft materials, after the surface layer is made on it, the surface layer is prone to uneven force and cracks, resulting in poor user experience. In addition, when the building is renovated for the second time, the insulation layer is easily damaged by the user, affecting the energy-saving effect of the building; when the insulation layer is below the structural layer, in addition to being easily damaged, affecting the energy-saving effect, the adhesion with the plaster layer is limited, and the plaster layer is easy to fall off.

[0003] In response to the above problems, the idea of ​​embedding the thermal insulation performance of the floor slab into the structural system was proposed. Combined with the production and construction characteristics of the prefabricated composite floor slab, the thermal insulation layer was placed between the top and bottom plates of the composite floor slab to form a "sandwich". Figure 1 As shown, in the prior art 1 (CN106522440A), the sandwich insulation composite floor comprises a precast bottom slab concrete layer 2, a polystyrene particle fiber concrete precast bottom slab insulation layer 3 is arranged on the precast bottom slab concrete layer 2, and a post-cast layer 4 is arranged on the polystyrene particle fiber concrete precast bottom slab insulation layer 3. Among them, the precast bottom slab concrete layer 2 has a bottom slab steel bar 1, the post-cast layer 4 has a plate surface steel bar 6, the lower end of the steel bar truss 5 is tied or welded to the bottom slab steel bar 1, and the upper end is tied or welded to the plate surface steel bar 6. Figure 2 As shown, in the prior art 2 (CN111980256A), the self-insulating composite floor comprises a prefabricated bottom plate layer 1, and a sandwich insulation layer 2 and a cast-in-place concrete layer are arranged in sequence above the prefabricated bottom plate layer 1; a steel truss is arranged between the prefabricated bottom plate layer 1 and the sandwich insulation layer 2; a shear key 4 with low thermal conductivity is arranged between the prefabricated bottom plate layer 1 and the cast-in-place concrete layer, and the shear key 4 is located between the prefabricated steel skeleton 102 and the cast-in-place steel skeleton 302.

[0004] It can be seen that in the prior art 1 and the prior art 2, the steel truss is a three-dimensional structure. During the installation of the insulation layer, on the one hand, the insulation layer needs to be cut according to the size and shape of the steel truss, which is time-consuming and labor-intensive; on the other hand, it is difficult or impossible to install the insulation layer at the steel truss, which will lead to a decrease in the insulation performance.

[0005] In view of this, it is indeed necessary to further improve the structure and construction method of the existing three-dimensional truss type sandwich insulation composite floor to improve the paving efficiency and insulation performance of the insulation layer. Utility Model Content

[0006] In order to solve the above technical problems, the utility model provides a plane truss type sandwich insulation composite floor, so that the steel bars of multiple angle trusses on the same column are on the same plane, so that the insulation layer does not need to be complicatedly processed during the paving process of the insulation layer, thereby improving the paving efficiency of the insulation layer. At the same time, the insulation layer basically completely covers the plane trusses, thereby improving the insulation performance.

[0007] In order to achieve the above-mentioned purpose, the utility model provides a plane truss type sandwich insulation composite floor, including a precast bottom plate concrete layer, an insulation layer, a post-poured concrete layer and a plane steel bar truss; the insulation layer is located on the upper surface of the precast bottom plate concrete layer, and the post-poured concrete layer is located on the upper surface of the insulation layer; the precast bottom plate concrete layer is provided with bottom plate steel bars, and the post-poured concrete layer is provided with plate surface steel bars, the lower end of the plane steel bar truss is tied or welded to the bottom plate steel bars, and the upper end is tied or welded to the plate surface steel bars; the plane steel bar truss is composed of upper chord steel bars, lower chord steel bars and web steel bars, the web steel bars are bent into a corrugated shape, the wave crests are welded to the upper chord steel bars, and the wave troughs are welded to the lower chord steel bars.

[0008] Furthermore, the thermal insulation layer is in the form of a plate and is laid on the bottom slab concrete layer. The thermal insulation layer has a disconnection seam at the plane steel bar truss to facilitate the laying of the thermal insulation layer.

[0009] Furthermore, the insulation layer is a cast insulation material, which is integrally cast on the bottom slab concrete layer. The insulation layer completely wraps the web steel bars of the plane steel truss.

[0010] Based on the above design, the utility model has the following beneficial effects:

[0011] Due to the use of the flat steel truss, a disconnection seam corresponding to the flat steel truss can be set on the insulation layer, so that the flat steel truss can pass through the disconnection seam on the insulation layer. During the paving process of the insulation layer, there is no need to perform additional cutting on the insulation layer, which greatly improves the paving efficiency of the insulation layer. At the same time, since the width of the disconnection seam on the insulation layer is the same as the thickness of the flat steel truss, after the insulation layer is paved, it can basically completely cover the prefabricated bottom slab concrete layer. The flat steel truss has basically no effect on the coverage of the insulation layer, which greatly improves the insulation performance.

[0012] On the basis of adopting plane steel bar truss, the insulation layer adopts cast insulation material. The insulation layer poured as a whole on the bottom plate concrete layer can completely wrap the web steel bars of the plane steel bar truss. The plane steel bar truss has less impact on the coverage of the insulation layer and has better insulation performance. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] In order to more clearly illustrate the specific implementation methods of the utility model or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0014] Figure 1 It is a structural schematic diagram of prior art 1;

[0015] Figure 2 It is a structural schematic diagram of prior art 2;

[0016] Figure 3 It is a structural schematic diagram of the first embodiment of the plane truss type sandwich insulation composite floor of the utility model;

[0017] Figure 4 It is a partial cross-sectional view of the first embodiment of the flat truss type sandwich insulation composite floor of the utility model;

[0018] Figure 5 It is a structural schematic diagram of the second embodiment of the flat truss type sandwich insulation composite floor of the utility model.

[0019] 10. Plane truss type sandwich insulation composite floor; 11. Precast bottom slab concrete layer; 111. Bottom slab reinforcement; 12. Insulation layer; 13. Post-cast concrete layer; 131. Slab surface reinforcement; 14. Plane reinforcement truss; 141. Upper chord reinforcement; 142. Lower chord reinforcement; 143. Web reinforcement; 15. Disconnection seam. DETAILED DESCRIPTION

[0020] The embodiments of the utility model are described in detail below with reference to the accompanying drawings.

[0021] The following describes the implementation methods of the present invention through specific concrete examples. Those skilled in the art can easily understand other advantages and effects of the present invention from the contents disclosed in this specification. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all of the embodiments. The present invention can also be implemented or applied through other different specific implementation methods, and the details in this specification can also be modified or changed in various ways based on different viewpoints and applications without departing from the spirit of the present invention. It should be noted that the following embodiments and features in the embodiments can be combined with each other without conflict. Based on the embodiments in the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0022] It should be noted that various aspects of the embodiments within the scope of the appended claims are described below. It should be apparent that the aspects described herein can be embodied in a wide variety of forms, and any specific structure and / or function described herein is merely illustrative. Based on the utility model, it should be understood by those skilled in the art that an aspect described herein can be implemented independently of any other aspect, and two or more of these aspects can be combined in various ways. For example, any number and aspect described herein can be used to implement the device and / or practice the method. In addition, other structures and / or functionalities other than one or more of the aspects described herein can be used to implement this device and / or practice this method.

[0023] It should also be noted that the illustrations provided in the following embodiments are only schematic illustrations of the basic concept of the present invention. The drawings only show components related to the present invention rather than being drawn according to the number, shape and size of components in actual implementation. In actual implementation, the type, quantity and proportion of each component may be changed at will, and the component layout may also be more complicated.

[0024] Additionally, in the following description, specific details are provided to facilitate a thorough understanding of the examples. However, it will be understood by those skilled in the art that the examples can be practiced without these specific details.

[0025] At the same time, in this specification, descriptions involving orientations, such as up, down, left, right, front, back, inside, outside, longitudinal, lateral, vertical, horizontal, etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0026] Furthermore, in the description of this specification, it should be noted that, unless otherwise clearly specified and limited, the terms "install", "connect" and "connect" should be understood in a broad sense. Example

[0027] The first embodiment of the utility model plane truss type sandwich insulation composite floor Figure 3 and 4In the first embodiment, the plane truss type sandwich insulation composite floor 10 comprises a precast bottom slab concrete layer 11, an insulation layer 12, a post-cast concrete layer 13 and a plane steel bar truss 14; the insulation layer 12 is located on the upper surface of the precast bottom slab concrete layer 11, and the post-cast concrete layer 13 is located on the upper surface of the insulation layer 12; the precast bottom slab concrete layer 11 is provided with a bottom slab steel bar 111 (not all shown), and the post-cast concrete layer 13 is provided with a plate surface steel bar 131 (not all shown), and the lower end of the plane steel bar truss 14 is tied or welded to the bottom slab steel bar 111, and the upper end is tied or welded to the plate surface steel bar 131.

[0028] The plane steel bar truss 14 is composed of an upper chord steel bar 141, a lower chord steel bar 142 and a web steel bar 143. The web steel bar 143 is bent into a corrugated shape, the crest is welded to the upper chord steel bar 141, and the trough is welded to the lower chord steel bar 142.

[0029] The thermal insulation layer 12 is in the form of a plate and is laid on the bottom slab concrete layer 11. The thermal insulation layer 12 has a disconnection seam 15 at the plane steel bar truss 14 to facilitate the laying of the thermal insulation layer.

[0030] During the construction of the plane truss-type sandwich insulation composite floor, since the insulation layer 12 is provided with a disconnection seam 15 corresponding to the plane steel bar truss 14, the plane steel bar truss 14 is aligned with the corresponding disconnection seam 15, and the insulation layer 12 does not need to be additionally cut during the paving process, and the paving of the insulation layer 12 can be completed by passing the plane steel bar truss 14 through the corresponding disconnection seam 15 on the insulation layer, which greatly improves the paving efficiency of the insulation layer 12. At the same time, since only the disconnection seam 15 is provided on the insulation layer 12, after the insulation layer is paved, the insulation layer 12 basically completely covers the prefabricated bottom slab concrete layer 11, and the setting of the plane steel bar truss 14 has basically no effect on the coverage of the insulation layer 12, which greatly improves the insulation performance.

[0031] Preferably, the disconnection seam 15 on the thermal insulation layer 12 can be preset, or opened during paving construction. Example

[0032] The second embodiment of the utility model plane truss type sandwich insulation composite floor Figure 5 Different from the first embodiment, in the second embodiment, the insulation layer 12 is a cast insulation material, which is integrally cast on the bottom slab concrete layer 11 , and the insulation layer 12 completely wraps the web steel bars 143 of the plane steel bar truss 14 .

[0033] The above is only a specific implementation of the utility model, but the protection scope of the utility model is not limited thereto. Any changes or substitutions that can be easily thought of by a person skilled in the art within the technical scope disclosed by the utility model should be included in the protection scope of the utility model. Therefore, the protection scope of the utility model should be based on the protection scope of the claims.

Claims

1. A plane truss-type sandwich insulation composite floor (10), comprising a precast bottom slab concrete layer (11), an insulation layer (12), a post-cast concrete layer (13) and a plane steel bar truss (14); the insulation layer (12) is located on the upper surface of the precast bottom slab concrete layer (11), and the post-cast concrete layer (13) is located on the upper surface of the insulation layer (12); the precast bottom slab concrete layer (11) is provided with a bottom slab steel bar (111), and the post-cast concrete layer (13) is provided with a plate surface steel bar (131); the lower end of the plane steel bar truss (14) is tied or welded to the bottom slab steel bar (111), and the upper end is tied or welded to the plate surface steel bar (131); It is characterized in that The plane steel bar truss (14) is composed of an upper chord steel bar (141), a lower chord steel bar (142) and a web steel bar (143), wherein the web steel bar (143) is bent into a corrugated shape, the crest of the wave is welded to the upper chord steel bar (141), and the trough of the wave is welded to the lower chord steel bar (142); The thermal insulation layer (12) is in the form of a plate and is laid on the bottom slab concrete layer (11). The thermal insulation layer (12) has a disconnection seam (15) at the plane steel bar truss (14) to facilitate the laying of the thermal insulation layer (12).

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