CN216195853U - Composite floor slab with heat preservation function - Google Patents

Abstract

The invention discloses a laminated floor with heat insulation, which comprises a prefabricated slab layer, wherein the prefabricated slab layer comprises a heat insulation layer, a reinforcing steel bar reinforcing member is fixedly arranged in the prefabricated slab layer, the laminated floor further comprises an assembled pouring plate and a pouring convex block, the thickness of the assembled pouring plate is smaller than that of the pouring convex block, the thickness of the pouring convex block is smaller than that of the prefabricated slab layer, the assembled pouring plate is fixedly arranged on the left side and the right side of the prefabricated slab layer, the pouring convex block is fixedly arranged on the left side and the right side of the prefabricated slab layer, the bottom surfaces of the pouring convex block, the assembled pouring plate and the prefabricated slab layer on one side are coplanar, the top surfaces of the pouring convex block, the assembled pouring plate and the prefabricated slab layer on the other side are coplanar, and a groove formed among the pouring convex block, the assembled pouring plate and the prefabricated floor is a mounting groove; the problem that the installation process of the composite floor slab is complicated is solved.

Description

Composite floor slab with heat preservation function

Technical Field

The invention relates to the technical field of composite floor slabs, in particular to a composite floor slab with heat insulation function.

Background

With the continuous development of the building industry in China, the industrialization of building materials becomes the direction of building development in the future. The prefabricated superimposed sheet of the assembled of mill preparation is as the novel product of the floor and the roof of replacing cast-in-place high-rise building, can reduce the loaded down with trivial details process of on-the-spot formwork and form removal and shorten advantages such as construction cycle, has solved the big and with high costs problem of the in-situ casting in-process degree of difficulty.

For example, chinese patent publication No. CN209653196U discloses a prefabricated composite floor slab, which includes prefabricated slabs, truss connecting ribs, and a rigid framework laid in the prefabricated slabs, wherein the rigid framework includes a plurality of stress ribs fixed by cross connection, and the stress ribs penetrate through the truss connecting ribs and are provided with threaded holes. The connection mode between the prefabricated composite floor slabs is that the first shaft and the second shaft are arranged on the two ends of the connecting shaft and can be screwed into the threaded holes, the threaded holes between two adjacent prefabricated composite slabs are aligned, and then the first shaft and the second shaft on the connecting shaft are screwed into the threaded holes.

To foretell correlation technique, the inventor thinks that the connecting axle can twist simultaneously in the screw hole of two adjacent prefabricated superimposed sheets soon, needs to guarantee that two prefabricated superimposed sheets place on the coplanar, and the side that two prefabricated superimposed sheets are close to each other is parallel, at the actual hoist and mount in-process, hardly accomplishes to align two prefabricated superimposed sheets's screw hole. The process of screwing the connecting shaft in the threaded hole needs a great deal of labor and time, and the working efficiency is reduced. The problem that the installation process is complicated exists in the installation process of this prefabricated superimposed sheet.

SUMMERY OF THE UTILITY MODEL

There is the loaded down with trivial details problem of installation procedure in order to improve the installation of coincide floor, this application provides a take heat retaining coincide floor.

The application provides a take heat retaining coincide floor adopts following technical scheme: a laminated floor with heat preservation comprises a prefabricated plate layer, wherein the prefabricated plate layer comprises a heat preservation layer, a reinforcing steel bar reinforcing member is fixedly installed in the prefabricated plate layer, the laminated floor further comprises an assembly pouring plate and a pouring convex block, the thickness of the assembly pouring plate is smaller than that of the pouring convex block, the thickness of the pouring convex block is smaller than that of the prefabricated plate layer, the assembly pouring plate is fixedly installed on each of the left side and the right side of the prefabricated plate layer, the pouring convex block is fixedly installed on each of the left side and the right side of the prefabricated plate layer, the bottom surfaces of the pouring convex block, the assembly pouring plate and the prefabricated plate layer on one side are coplanar, and a groove formed among the pouring convex block on the side surface, the assembly pouring plate and a prefabricated floor is a first installation groove; and the top surfaces of the pouring convex blocks, the assembled pouring plates and the prefabricated slab layers on the other side are coplanar, and grooves formed among the pouring convex blocks, the assembled pouring plates and the prefabricated floors on the side surfaces are called as second mounting grooves.

Through adopting above-mentioned technical scheme, coincide floor and adjacent coincide floor assembling process, only need to install the lug of pouring of coincide floor in the first mounting groove of adjacent coincide floor, another of coincide floor is pour the lug and is also installed in the second mounting groove of adjacent coincide floor thereupon, if the skew appears only need with the little hammer of cortex beat back just can, the precast slab layer is including the heat preservation, make this coincide floor have the heat preservation function, precast slab in situ fixed mounting has the reinforcing bar reinforcement, make precast slab layer be difficult for appearing fracture and deformation, the installation process that has improved the coincide floor has the loaded down with trivial details problem of installation procedure.

Optionally, the prefabricated sheet layer still includes the die block, and heat preservation fixed mounting has a top mould at the last side of die block, the last side fixed mounting of heat preservation, and the projection face of heat preservation and top mould on the die block all coincides with the last side of die block, and the material of heat preservation is rock wool board material.

By adopting the technical scheme, the projection surfaces of the heat-insulating layer and the top mold on the bottom mold are coincided with the upper side surface of the bottom mold, so that the prefabricated slab layer and the adjacent prefabricated floor slab can be tightly attached, and the filling of concrete to the gap of the prefabricated slab layer is reduced. The material of heat preservation is the rock wool board material, and rock wool board material low price and convenient for material collection, and rock wool board material still has the fire prevention function except that the heat preservation function.

Optionally, the reinforcing bar reinforcement includes the reinforcing bar otter board, the reinforcing bar otter board is equal fixed mounting has one in top mould and die block, fixed mounting has connecting reinforcement between two reinforcing bar otter boards, and connecting reinforcement is provided with a plurality of between two reinforcing bar otter boards, the reinforcing bar otter board includes horizontal reinforcement and indulges the reinforcing bar, horizontal reinforcement is provided with a plurality of along the horizontal direction between indulging the reinforcing bar both ends, it is provided with a plurality of along the horizontal direction to indulge the reinforcing bar between horizontal reinforcement both ends to indulge the reinforcing bar, horizontal reinforcement fixed mounting is on indulging the reinforcing bar, install in the board and extend the otter board to the equipment is pour.

Through adopting above-mentioned technical scheme, horizontal reinforcement and the setting up of indulging the reinforcing bar can fill in die block and top mould by great degree for the prefabricated sheet layer can bear external pressure more effectively, and the setting up of double-deck reinforcing bar net makes prefabricated sheet layer non-deformable and fracture. The arrangement of the transverse steel bars and the longitudinal steel bars also reduces the difficulty of a factory in the preparation process, and simultaneously reduces the cost of manufacturing the reinforcing mesh.

Optionally, the shape and structure of the extension net plate are substantially the same as those of the first mesh reinforcement, except that the length of the extension net plate is smaller than that of the first mesh reinforcement.

Through adopting above-mentioned technical scheme, the shape and the structure of the reinforcing bar reinforcement of the inboard installation of equipment pouring are the same basically with first reinforcing bar net for the reinforcing bar reinforcement can great area install in the board is pour in the equipment, makes the difficult fracture of board is pour in the equipment, can directly tailor to current first reinforcing bar net and can obtain, has reduced the waste of material.

Optionally, the steel bar connecting piece comprises a first steel bar truss, the first steel bar truss comprises an upper chord steel bar, a lower chord steel bar and web member steel bars, the web member steel bars are in a polygonal pyramid shape, the lower chord steel bar is provided with a plurality of lower chord steel bars, the plurality of lower chord steel bars are fixedly mounted on the lower side face of the web member steel bars, the web member steel bars are provided with a plurality of lower chord steel bars, the upper chord steel bars are fixedly mounted on the upper side face of the web member steel bars, and a second steel bar truss is mounted in the pouring convex block.

Through adopting above-mentioned technical scheme, the web member reinforcing bar is the polypyramid shape, and die block, heat preservation and the top mould three in the prefabricated sheet layer are difficult for separating, and first reinforcing bar net and second reinforcing bar net are because the difficult emergence of polypyramid structure squints, and has reduced steel bar truss's material and has reduced steel bar truss's cost promptly.

Optionally, the second steel bar truss is substantially the same as the first steel bar truss in shape and structure, except that the height of the second steel bar truss is smaller than that of the first steel bar truss.

By adopting the technical scheme, the shape and the structure of the steel bar connecting piece arranged in the pouring convex block are basically the same as those of the first steel bar truss, so that the steel bar connecting piece is provided with the polygonal pyramid which is arranged in the pouring convex block to ensure that the pouring convex block is not easy to deform, the existing first steel bar truss can be directly cut, and the waste of materials is reduced.

Optionally, a pouring through groove is vertically formed in the top surface of the pouring lug, the left side face of the pouring through groove coincides with the left side face of the pouring lug, the right side face of the pouring through groove coincides with the right side face of the pouring lug, and a plurality of pouring through grooves are arranged on the front side and the rear side of the pouring lug.

Through adopting above-mentioned technical scheme, it pours into through the groove through pouring with the concrete from coincide floor for in the gap of concrete inflow lug and second mounting groove and the gap of lug and first mounting groove, only need through observing other pouring and lead to the inslot and have or not the concrete outflow, just can judge whether the gap is filled up.

Optionally, the ends of the upper chord steel bar and the lower chord steel bar of the first steel bar truss both exceed the front side and the rear side of the prefabricated slab layer.

By adopting the technical scheme, the composite floor slab is arranged on a floor, the exceeding upper chord steel rod and the exceeding lower chord steel rod can be arranged together with the steel bars of the bearing wall of the building, and the stability of the composite floor slab is improved.

In summary, the present application includes at least one of the following beneficial technical effects:

1. in the assembly process of the laminated floor slab and the adjacent laminated floor slab, only the pouring convex block of the laminated floor slab is required to be installed in the first installation groove of the adjacent laminated floor slab, the other pouring convex block of the laminated floor slab is also installed in the second installation groove of the adjacent laminated floor slab, if the deviation occurs, only the small cortical hammer is required to be used for knocking back, the prefabricated slab layer comprises a heat insulation layer, so that the laminated floor slab has a heat insulation function, a reinforcing steel bar reinforcing member is fixedly installed in the prefabricated slab layer, the prefabricated slab layer is not easy to crack and deform, and the problem that the installation process of the laminated floor slab is complicated is solved;

2. the concrete is poured into the laminated floor slab from the pouring through grooves of the laminated floor slab, so that the concrete flows into gaps between the convex blocks and the second mounting grooves and gaps between the convex blocks and the first mounting grooves, and whether the gaps are filled can be judged only by observing whether the concrete flows out of other pouring through grooves;

3. the shape and the structure of the reinforcing steel bar reinforcing member installed in the assembly pouring plate are basically the same as those of the first reinforcing steel bar net, so that the reinforcing steel bar reinforcing member can be installed in the assembly pouring plate in a large area, the assembly pouring plate is not easy to break, the existing first reinforcing steel bar net can be directly cut, and the waste of materials is reduced.

Drawings

Fig. 1 is a schematic structural diagram of an embodiment of the present application.

Fig. 2 is a schematic view of a rebar structure according to an embodiment of the application.

Fig. 3 is an assembly schematic of an embodiment of the present application.

Fig. 4 is an enlarged schematic view of a portion a in fig. 3.

Description of reference numerals: 1. a base mechanism; 11. prefabricating a slab layer; 111. bottom die; 112. a heat-insulating layer; 113. carrying out top die; 12. assembling and pouring a plate; 121. pouring a bottom plate; 122. pouring a top plate; 13. pouring a lug; 131. a first bump; 132. a second bump; 2. a reinforcement mechanism; 21. a steel bar net plate; 22. a first reinforcing mesh; 23. a second reinforcing mesh; 24. transverse reinforcing steel bars; 25. longitudinal reinforcing steel bars; 26. extending the net plate; 27. a first extension net; 28. a second expanded mesh; 3. a support mechanism; 31. a first steel bar truss; 32. a second steel bar truss; 33. a third steel bar truss; 34. an upper chord steel rod; 35. a lower chord steel rod; 36. web member reinforcing steel bars; 4. an installation mechanism; 41. casting a through groove; 42. a first mounting groove; 43. and a second mounting groove.

Detailed Description

The present application is described in further detail below with reference to figures 1-4.

The embodiment of the application discloses take heat retaining coincide floor. Referring to fig. 1 and 2, the laminated floor slab with heat insulation comprises a foundation mechanism 1, a reinforcing mechanism 2, a supporting mechanism 3 and an installation mechanism 4, wherein the foundation mechanism 1 comprises a prefabricated slab layer 11, the reinforcing mechanism 2, the supporting mechanism 3 and the installation mechanism 4 are all installed on the prefabricated slab layer 11, the foundation mechanism 1 further comprises a first convex block 131 and a second convex block 132, and the side surfaces, far away from each other, of the first convex block 131 and the second convex block 132 are the left side surface and the right side surface of the laminated floor slab with heat insulation.

Referring to fig. 2, the support mechanism 3 includes a first steel bar truss 31, and the first steel bar truss 31 includes an upper chord steel bar 34, a lower chord steel bar 35, and a web member steel bar 36. The web member steel bars 36 are in a quadrangular pyramid shape, the quadrilateral surface in the quadrangular pyramid shape is the bottom surface of the web member steel bars 36, the top point of the web member steel bars 36, which is far away from the bottom surface of the web member steel bars 36, is the tip end of the web member steel bars 36, two lower chord steel bars 35 are arranged, the two lower chord steel bars 35 are respectively overlapped with the left side edge and the right side edge of the bottom surface of the web member steel bars 36, the lower chord steel bars 35 are fixedly arranged on the bottom surface of the web member steel bars 36, and the web member steel bars 36 are arranged at equal intervals between the two ends of the lower chord steel bars 35; the upper chord steel bar 34 is fixedly arranged among the tips of a plurality of web member reinforcing steel bars 36, and the diameter of the upper chord steel bar 34 is equal to that of the lower chord steel bar 35. The upper chord steel bar 34 and the upper chord steel bar 34 are thicker than common steel bars, and the pressure and shock resistance strength of the composite floor slab is increased.

Referring to fig. 2, the upper and lower sides of the first steel bar truss 31 are horizontally and fixedly provided with the steel bar net plate 21, and the projection surface of the upper steel bar net plate 21 on the lower steel bar net plate 21 coincides with the upper side surface of the lower steel bar net plate 21. Reinforcing bar otter board 21 includes horizontal reinforcing bar 24 and indulges reinforcing bar 25, and horizontal reinforcing bar 24 and indulge reinforcing bar 25 and be located same horizontal plane and mutually perpendicular, and horizontal reinforcing bar 24 is provided with a plurality of along the equidistant horizontal direction between indulging reinforcing bar 25 both ends, and indulges reinforcing bar 25 and be provided with a plurality of along the equidistant horizontal direction between horizontal reinforcing bar 24 both ends, and horizontal reinforcing bar 24 fixed mounting is on indulging reinforcing bar 25. The upper chord steel bar 34 and the lower chord steel bar 35 on the first steel bar truss 31 are parallel to each other, and the longitudinal steel bar 25 and the lower chord steel bar 35 of the first steel bar truss 31 are parallel to each other; the ends of the upper chord steel rods 34 and the ends of the lower chord steel rods 35 on the first steel bar truss 31 are flush with each other, the ends of the lower chord steel rods 35 of the first steel bar truss 31 exceed the front side and the rear side of the steel bar net plates 21, four steel bar net plates 21 arranged on the lower side surface of the first steel bar truss 31 are arranged between the two steel bar net plates 21 at equal intervals from left to right, the first steel bar net plate 21 arranged on the first steel bar truss 31 is called as a first steel bar net 22, and the steel bar net plates 21 arranged on the upper side surface of the first steel bar truss 31 are called as a second steel bar net 23.

Referring to fig. 2, the extension net plate 26 is horizontally and fixedly installed on both the right side of the first mesh reinforcement 22 and the left side of the second mesh reinforcement 23, and the structure and shape of the extension net plate 26 are substantially the same as those of the mesh reinforcement plate 21 except that the length of the extension net plate 26 is smaller than that of the mesh reinforcement plate 21. The expanded mesh 26 attached to the first mesh reinforcement 22 is referred to as a first expanded mesh 27, and the expanded mesh 26 attached to the second mesh reinforcement 23 is referred to as a second expanded mesh 28. A second steel bar truss 32 is fixedly arranged at the position of the right side of the upper side of the first extension net 27, a third steel bar truss 33 is fixedly arranged at the position of the left side of the lower side of the second extension net 28, the second steel bar truss 32 and the third steel bar truss 33 are identical in shape and structure, the structure and shape of the second steel bar truss 32 are basically identical to those of the first steel bar truss 31, and the difference is that the height of the second steel bar truss 32 is smaller than that of the first steel bar truss 31. The lower chord 35 of the second steel bar truss 32 is fixedly arranged on the upper side surface of the first extension net 27, and the lower chord 35 of the third steel bar truss 33 is fixedly arranged on the lower side surface of the second extension net 28.

Referring to fig. 1 and 2, the precast slab layer 11 includes a bottom mold 111, an insulation layer 112, and a top mold 113, the bottom mold 111 being cast on the first mesh reinforcement 22, the bottom mold 111 having the same cross section as the first mesh reinforcement 22. The heat insulation layer 112 is fixedly installed on the top surface of the bottom mold 111, the top mold 113 is poured on the top surface of the heat insulation layer 112, the projection surfaces of the heat insulation layer 112 and the top mold 113 on the bottom mold 111 are overlapped with the top surface of the bottom mold 111, and the heat insulation layer 112 is made of rock wool boards. The second mesh reinforcement 23 is cast in the top mold 113. The first extension net 27 and the second extension net 28 are both cast with the assembly casting plate 12, and the cross section of the assembly casting plate 12 is the same as that of the extension net plate 26. Pouring lugs 13 are poured on the second steel bar truss 32 and the third steel bar truss 33, pouring through grooves 41 are vertically formed in the top surfaces of the pouring lugs 13 poured on the second steel bar truss 32 and the top surfaces of the pouring lugs 13 poured on the third steel bar truss 33, the cross sections of the pouring through grooves 41 are long in shape, the open sides of the pouring through grooves 41 are parallel to the front side of the top surfaces of the pouring lugs 13, the left side surfaces of the pouring through grooves 41 are overlapped with the left side surfaces of the pouring lugs 13, the right side surfaces of the pouring through grooves 41 are overlapped with the right side surfaces of the pouring lugs 13, and the number of the pouring through grooves 41 is three on the front side and the back side of the pouring lugs 13 at equal intervals.

Referring to fig. 2 and 3, the assembly casting plate 12 cast on the first extension net 27 is a casting bottom plate 121, and the assembly casting plate 12 cast on the second extension net 28 is a casting top plate 122. The first protrusion 131 is a casting protrusion 13 cast on the second steel bar truss 32, and the second protrusion 132 is a casting protrusion 13 cast on the third steel bar truss 33. The bottom surfaces of the first projection 131, the pouring bottom plate 121 and the bottom mold 111 are coplanar, and the top surfaces of the second projection 132, the pouring top plate 122 and the top mold 113 are coplanar. A groove formed among the first bump 131, the pouring bottom plate 121 and the precast slab layer 11 is called as a first mounting groove 42, and the upper side surface of the pouring bottom plate 121 is a groove bottom of the first mounting groove 42; the groove formed between the second protrusion 132, the cast top plate 122 and the precast slab layer 11 is referred to as a second mounting groove 43, and the lower side surface of the cast top plate 122 is a groove bottom of the second mounting groove 43.

Referring to fig. 2 and 4, in the assembly process of the two laminated floor slabs, the first convex block 131 of each laminated floor slab is installed in the second installation groove 43 of the adjacent laminated floor slab, the left and right side walls of the first convex block 131 and the second installation groove 43 are attached, and a gap is formed between the first convex block 131 and the bottom of the second installation groove 43; the second convex block 132 of the overlapped floor slab is also installed in the first installation groove 42 of the adjacent overlapped floor slab, the second convex block 132 is attached to the left and right side walls of the first installation groove 42, and a gap is formed between the second convex block 132 and the bottom of the first installation groove 42.

The implementation principle of the composite floor slab with the heat preservation function provided by the embodiment of the application is as follows: in the assembly process of the composite floor slab and the adjacent composite floor slab, the second convex block 132 of the composite floor slab is only required to be installed in the first installation groove 42 of the adjacent composite floor slab, and the first convex block 131 of the composite floor slab is also installed in the second installation groove 43 of the adjacent composite floor slab, so that the problem that the installation process of the composite floor slab is complicated is solved. And then pouring concrete into the through groove 41 of the composite floor slab, so that the concrete flows into the gaps between the first convex block 131 and the second installation groove 43 and the gaps between the second convex block 132 and the first installation groove 42, and whether the gaps are filled up is judged only by observing whether the concrete flows out of the through grooves 41 of other pouring.

The above embodiments are preferred embodiments of the present application, and the protection scope of the present application is not limited by the above embodiments, so: all equivalent changes made according to the structure, shape and principle of the present application shall be covered by the protection scope of the present application.

Claims (8)

1. The utility model provides a take heat retaining coincide floor, includes prefabricated sheet layer (11), prefabricated sheet layer (11) including heat preservation (112), and fixed mounting has reinforcing bar reinforcement, its characterized in that in prefabricated sheet layer (11): the prefabricated slab comprises a prefabricated slab layer (11), and is characterized by further comprising an assembled pouring plate (12) and pouring lugs (13), wherein the thickness of the assembled pouring plate (12) is smaller than that of the pouring lugs (13), the thickness of the pouring lugs (13) is smaller than that of the prefabricated slab layer (11), one assembled pouring plate (12) is fixedly arranged on each of the left side and the right side of the prefabricated slab layer (11), one pouring lug (13) is fixedly arranged on each of the left side and the right side of the prefabricated slab layer (11), the bottom surfaces of the pouring lugs (13), the assembled pouring plate (12) and the prefabricated slab layer (11) on one side are coplanar, and a groove formed among the pouring lugs (13), the assembled pouring plate (12) and the prefabricated slab layer (11) on the side is a first mounting groove (42); and the top surfaces of the pouring convex blocks (13), the assembled pouring plates (12) and the prefabricated slab layer (11) on the other side are coplanar, and grooves formed among the pouring convex blocks (13), the assembled pouring plates (12) and the prefabricated floor on the side surfaces are called as second mounting grooves (43).

2. The composite floor slab with heat insulation function as claimed in claim 1, wherein: prefabricated sheet layer (11) still include die block (111), and heat preservation (112) fixed mounting has top mould (113) at the side of going up of die block (111), the side of going up of heat preservation (112) fixed mounting, and the projection face of heat preservation (112) and top mould (113) on die block (111) all coincides with the side of going up of die block (111), and the material of heat preservation (112) is rock wool board material.

3. The composite floor slab with heat insulation function as claimed in claim 2, wherein: reinforcing bar reinforcement includes reinforcing bar otter board (21), equal fixed mounting has one in top mould (113) and die block (111) reinforcing bar otter board (21), fixed mounting has reinforcing bar connecting piece between two reinforcing bar otter boards (21), and reinforcing bar connecting piece is provided with a plurality of between two reinforcing bar otter boards (21), reinforcing bar otter board (21) include horizontal reinforcement (24) and indulge reinforcing bar (25), horizontal reinforcement (24) are being provided with a plurality of along the horizontal direction between indulging reinforcing bar (25) both ends, it is provided with a plurality of to indulge reinforcing bar (25) along the horizontal direction between horizontal reinforcement (24) both ends, horizontal reinforcement (24) fixed mounting is on indulging reinforcing bar (25), install in the equipment pouring board (12) and extend otter board (26).

4. The composite floor slab with heat insulation function as claimed in claim 3, wherein: the shape and structure of the expanded mesh sheet (26) are substantially the same as those of the first mesh reinforcement (22), except that the length of the expanded mesh sheet (26) is smaller than that of the first mesh reinforcement (22).

5. The composite floor slab with heat insulation function as claimed in claim 3, wherein: reinforcing bar connecting piece includes first steel bar truss (31), first steel bar truss (31) include last string steel pole (34), last string steel pole (35) and web member reinforcing bar (36), web member reinforcing bar (36) are the polypyramid shape, last string steel pole (35) are provided with a plurality of, the equal fixed mounting of a plurality of last string steel pole (35) is on the downside of web member reinforcing bar (36), web member reinforcing bar (36) are provided with a plurality of on last string steel pole (35), last string steel pole (34) fixed mounting is on the last side of web member reinforcing bar (36), pour and install second steel bar truss (32) in lug (13).

6. The composite floor slab with heat preservation of claim 5, characterized in that: the second steel bar truss (32) is basically the same as the first steel bar truss (31) in shape and structure, except that the height of the second steel bar truss (32) is smaller than that of the first steel bar truss (31).

7. The composite floor slab with heat insulation function as claimed in claim 1, wherein: a pouring through groove (41) is formed in the top surface of the pouring convex block (13), the left side face of the pouring through groove (41) coincides with the left side face of the pouring convex block (13), the right side face of the pouring through groove (41) coincides with the right side face of the pouring convex block (13), and a plurality of pouring through grooves (41) are arranged on the front side and the rear side of the pouring convex block (13).

8. The composite floor slab with heat preservation of claim 5, characterized in that: the ends of an upper chord steel bar (34) and a lower chord steel bar (35) of the first steel bar truss (31) exceed the front side and the rear side of the precast slab layer (11).

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