Heat insulation structure, fabricated building floor slab and application of fabricated building floor slab in low-layer span beam building

Abstract

The invention relates to the technical field of building floor slabs, and discloses a heat insulation structure, an assembly type building floor slab and application of the assembly type building floor slab in a low-layer span-beam building. A first floor slab unit and a second floor slab unit are erected and assembled on a reinforcing assembly, and the space among the reinforcing assembly, the first floor slab unit and the second floor slab unit is filled with a concrete filling layer; a limiting table is integrally formed on the precast beam, drainage cylinders are evenly assembled on the top of the limiting table in an inserted mode, the outer side walls of the drainage cylinders are fixedly sleeved with bearing discs, the drainage cylinders are sleeved with the arched heat preservation bridge, and drainage openings are formed in the outer side walls of the drainage cylinders. The heat preservation layer in the floor unit has a larger heat preservation area, so that the floor unit has a better heat preservation effect, the heat insulation performance of the floor unit is enhanced, the arch-shaped heat preservation bridge is led into the drainage channel and then forms an integrated structure with the heat preservation layer between the floor units, the integrated heat preservation effect between the floor units is improved, and a heat bridge is avoided.

Description

Technical Field

[0001] The invention relates to the technical field of building floors, and in particular to a heat insulation structure, an assembled building floor and applications thereof in low-rise span-beam buildings. Background Art

[0002] Prefabricated building floors are a type of prefabricated concrete or steel structure floor components that are produced in a factory and then assembled and installed on site. Compared with traditional cast-in-place floors, prefabricated building floors have obvious advantages in quality control, construction speed, human resource utilization and environmental friendliness.

[0003] An energy-saving prefabricated building floor with application number CN202410544003.5 divides the floor into three layers: a base layer, a structural layer and a surface layer. The structural layer and the surface layer are cast-in-place parts. The steel plate load-bearing components in the base layer are made of steel plates, and the aerated concrete filler has the advantages of fire prevention, sound insulation, heat preservation and anti-seepage. The molded polystyrene board used in the reinforced fixing components also has thermal insulation functions. By connecting the aerated concrete filler with the reinforced fixing components, a continuous insulation layer can be formed.

[0004] In actual use, thermal bridges are usually formed at the connections between prefabricated floor slabs and beams and columns due to differences in material thermal conductivity or the high thermal conductivity of the connectors. The high thermal conductivity will break the integrity of the insulation layer inside the prefabricated floor slabs and form local thermal bridges. Moreover, the insulation layer inside the prefabricated floor slabs cannot be completely continuous at the connection points and will be interrupted, which will also cause thermal bridges.

[0005] Therefore, the present invention proposes a heat insulation structure, a prefabricated building floor and its application in a low-rise span beam building to solve the above problems. Summary of the invention

[0006] The object of the present invention is to provide a thermal insulation structure, a prefabricated building floor and the application thereof in a low-rise span beam building, so as to solve the problems raised in the above-mentioned background technology.

[0007] To achieve the above-mentioned objectives, the present invention provides the following technical solutions: an assembled building floor, comprising a first floor unit and a second floor unit which are laid side by side and have the same structure, and the first floor unit and the second floor unit are mounted on a reinforcement component, and a concrete filling layer is filled between the reinforcement component, the first floor unit and the second floor unit, and an integrated surface layer is laid on the top of the first floor unit and the second floor unit.

[0008] The reinforcement component includes a prefabricated beam, and a limit platform is integrally formed on the upper part of the prefabricated beam. Support grooves are provided on the left and right sides of the limit platform. A drainage tube is evenly inserted and assembled on the top of the limit platform. A support tray is fixedly sleeved on the outer wall of the drainage tube. An arched thermal insulation bridge is located on the top of the support tray, and the arched thermal insulation bridge is limitedly installed on the top of the support tray. A drainage port is provided on the outer wall of the drainage tube.

[0009] Preferably, the first floor unit includes a support frame, a steel mesh is laid and installed in the support frame, a second support layer is laid and installed below the support frame, a first support layer is laid parallel to the second support layer, a reinforcement layer is arranged between the first support layer and the second support layer, and the steel mesh is arranged above the first support layer.

[0010] Preferably, aerated concrete filler is filled between the first supporting layer and the second supporting layer to form an insulation layer, the support frame is filled with fine stone concrete, drainage channels corresponding to the insulation layer are opened on the side walls of the support frame, and a transition insulation strip extending into the drainage channel is integrally formed on the arched insulation bridge, the supporting groove matches the first floor unit and the second floor unit, and the drainage channel is an arc-shaped channel.

[0011] Preferably, limiting channels corresponding to the steel mesh are opened on the side walls around the support frame, and the steel mesh includes transverse steel bars and longitudinal steel bars arranged side by side. The transverse steel bars and longitudinal steel bars are staggered and the connection points of the two are connected by hoops. The ends of the transverse steel bars and longitudinal steel bars extend out of the limiting channels, and tie steel bar rings corresponding to the limiting channels are welded and assembled on the outer side walls of the two adjacent groups of drainage tubes, and the tie steel bar rings are connected to the corresponding transverse steel bars and longitudinal steel bars through hoops.

[0012] Preferably, the first support layer includes a first support steel plate with the same size as the inner cavity of the support frame, and the first support steel plate is integrally provided with evenly distributed first hemispherical support parts. The second support layer includes a second support steel plate with the same size as the inner cavity of the support frame, and the second support steel plate is integrally provided with evenly distributed second hemispherical support parts, and the distance between the first support steel plate and the second support steel plate is the same.

[0013] Preferably, the reinforcement layer includes a first I-beam fixedly welded between the first supporting steel plate and the second supporting steel plate, and also includes a second I-beam welded between the first hemispherical support member and the second hemispherical support member.

[0014] Preferably, the concrete filling layer is filled at the top of the arched thermal insulation bridge, and the concrete filling layer is drained to the limiting channel and the first floor unit to be integrally cast, the concrete filling layer is flush with the top of the first floor unit and the second floor unit, and the concrete flows out through the drainage tube through the drainage port and is filled between the limiting platform and the arched thermal insulation bridge.

[0015] The invention provides a heat insulation structure, comprising a basic heat-insulating structure arranged in a floor unit, wherein the basic heat-insulating structure comprises a first supporting layer, a second supporting layer and a heat-insulating layer filled therebetween.

[0016] It also includes an arched insulation bridge and a transition insulation strip, and the transition insulation strip is seamlessly connected to the insulation layer.

[0017] It also includes a concrete filling layer filled inside the floor unit and between adjacent floor units. The arched insulation bridge and the transition insulation strip are made of low thermal conductivity insulation material, preferably one of expanded glass bead insulation material, water-expandable rubber material, and expanded aerogel composite material.

[0018] The present invention provides an application of prefabricated building floors in low-rise cross-beam buildings. The reinforcement components facilitate the positioning and installation between the first floor unit and the second floor unit, and the thermal insulation structure attached to the prefabricated building floor can form an integrated insulation layer structure with the floor unit, so that when the floor unit is installed across the beam, thermal bridges can be prevented between the floor units, and poor thermal insulation effects can be prevented at the floor joints.

[0019] Technical effects and advantages of the present invention: 1. The first supporting layer and the second supporting layer in the floor unit of the present invention are arranged in parallel, and a reinforcing layer is evenly installed between the two to enhance the connection stability between the two. The first supporting layer and the second supporting layer are filled with aerated concrete filler to form an insulation layer, which greatly improves the insulation effect of the floor unit. Moreover, the first supporting layer and the second supporting layer both include hemispherical arched support steels, which not only have good support strength, but also the insulation layer formed between the two has a larger insulation area, so that the floor unit has a better insulation effect and enhances the thermal insulation of the floor unit.

[0020] 2. After the arched insulation bridge in the enhanced component of the present invention is introduced into the drainage channel, it forms an integrated structure with the insulation layer between the floor units. Moreover, the drainage channel is an arc-shaped channel. With the arc-shaped structure of the arched insulation bridge, it can naturally transition with the floor unit to form an integrated insulation structure, greatly increasing the integrated insulation effect between the floor units and avoiding the occurrence of thermal bridges. At the same time, the concrete filling layer above the enhanced component not only protects the arched insulation bridge, but also can enhance the connection stability between the floor units. Moreover, the concrete filling layer can be filled in the limiting channel, so that it is formed as a whole with the fine stone concrete inside the floor unit, thereby completing the connection between the floor units, and sealing the joints between the floor units to improve waterproof protection. Moreover, it has a pressurized protection effect on the arched insulation bridge, so that it is filled in the drainage channel, the sealing treatment of the drainage channel is completed, and the insulation effect between the floor units is enhanced at the same time. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a schematic diagram of the overall structure of the present invention; Figure 2 This is a schematic diagram of the assembly structure of the first floor unit, the reinforcement assembly and the second floor unit of the present invention; Figure 3 It is a schematic diagram of the explosion of the first floor unit structure of the present invention from a first viewing angle; Figure 4 It is a schematic diagram of the explosion of the first floor unit structure of the present invention from a second viewing angle; Figure 5 This is a schematic diagram of the overall state structure of the first floor unit of the present invention; Figure 6 This is a schematic cross-sectional structural diagram of the first floor unit of the present invention; Figure 7 This is a schematic diagram of the structure of the enhanced component of the present invention; Figure 8 It is a partial cross-sectional schematic diagram of the assembly structure of the first floor unit, the reinforcement component and the second floor unit of the present invention.

[0022] In the figure: 10, first floor unit; 11, support frame; 111, limit channel; 112, drainage channel; 12, steel mesh; 121, transverse steel bar; 122, longitudinal steel bar; 13, first support layer; 131, first support steel plate; 132, first hemispherical support member; 14, reinforcement layer; 141, first I-beam; 142, second I-beam; 15, second support layer; 151, second support steel plate; 152, second hemispherical support member; 20, second floor unit; 30, reinforcement component; 31, precast beam; 32, limit platform; 33, support groove; 34, drainage tube; 35, support tray; 36, arch insulation bridge; 37, transition insulation strip; 38, drainage port; 39, tie steel ring; 40, concrete filling layer; 50, surface layer. DETAILED DESCRIPTION

[0023] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of 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.

[0024] like Figures 1 to 8 As shown, this embodiment discloses an assembled building floor, including a first floor unit 10 and a second floor unit 20 which are laid side by side and have the same structure, and the first floor unit 10 and the second floor unit 20 are mounted on a reinforcing component 30, and a concrete filling layer 40 is filled between the reinforcing component 30, the first floor unit 10, and the second floor unit 20, and an integrated surface layer 50 is laid on the top of the first floor unit 10 and the second floor unit 20.

[0025] During pre-installation, the reinforcing component 30 serves as a connecting bridge between the floor units, and the reinforcing component 30 can limit the pre-installation of the floor units to prevent the floor units from shifting during installation, and then fill concrete between the first floor unit 10 and the second floor unit 20 to form a concrete filling layer 40, which can achieve the connection between the first floor unit 10 and the second floor unit 20, and at the same time complete the sealing between the two. When the reinforcing component 30 is used, it can form an insulation isolation layer between the first floor unit 10 and the second floor unit 20, thereby forming a continuous insulation layer at the joints between the floor units, greatly increasing the thermal insulation effect of the floor, and after the concrete filling layer 40 is filled, the reinforcing component 30 and the floor unit can form an integrated structure, the sealing between the floor units is strengthened, and with the laying of the surface layer 50, waterproof protection of the floor is achieved.

[0026] See also Figure 7 and Figure 8The reinforcing component 30 includes a precast beam 31, which realizes the installation of the floor slab and completes the load-bearing. A limiting platform 32 is integrally formed on the upper part of the precast beam 31. Supporting grooves 33 are provided on the left and right sides of the limiting platform 32. The supporting grooves 33 match the first floor slab unit 10 and the second floor slab unit 20. A drainage tube 34 is evenly inserted and assembled on the top of the limiting platform 32. A supporting tray 35 is fixedly sleeved on the outer wall of the drainage tube 34. An arched insulation bridge 36 is located on the top of the supporting tray 35. The arched insulation bridge 36 is sleeved and assembled on the drainage tube 34. A drainage port 38 is provided on the outer wall of the drainage tube 34. When the floor slab unit is installed, the floor slab unit is located in the supporting grooves 33 on both sides of the limiting platform 32. The limiting platform 32 is used to realize the partition between the floor slab units, and the floor slab units can be limited, which greatly improves the positioning accuracy of the floor slab unit during installation, not only can it prevent its displacement, but also can effectively partition the floor slab unit.

[0027] It should be noted that the arched insulation bridge 36 and the transition insulation strip 37 are made of low thermal conductivity insulation material, preferably one of expanded glass bead insulation material, water-expandable rubber material, and expanded aerogel composite material. In this embodiment, the arched insulation bridge 36 and the transition insulation strip 37 are made of expanded aerogel composite material, and the arched insulation bridge 36 is provided with a mounting hole matching the drainage tube 34, so that the arched insulation bridge 36 can be arranged on the outside of the drainage tube 34 in an orderly manner, and then assembled between the floor units. When pouring concrete between the floor units, the concrete naturally falls on the top of the arched insulation bridge 36, and the arched insulation bridge 36 will expand after absorbing moisture in the concrete filler, and then fill between the floor units, thereby enhancing the sealing between the floor units. Moreover, the arched insulation bridge 36 will become one with the floor unit after absorbing water and expanding, thereby forming an integrated insulation layer structure with the floor unit, so that when the floor unit is installed across the beam, it can prevent the occurrence of thermal bridges between the floor units and prevent poor insulation effect at the floor joints.

[0028] The concrete filling layer 40 is filled on the top of the arched thermal insulation bridge 36, and the concrete filling layer 40 is drained to the limiting channel 111 and the first floor unit 10 to be cast and formed as a whole. The concrete filling layer 40 is flush with the tops of the first floor unit 10 and the second floor unit 20, and the concrete flows out through the drainage tube 34 through the drainage port 38 and fills between the limiting platform 32 and the arched thermal insulation bridge 36. When pouring concrete on site, a shell plate is packaged on the outside between the floor units to block the concrete poured between the floor units. Therefore, during actual pouring and use, the concrete flows into the drainage tube 34 and flows out through the drainage port 38 to the bottom of the arched thermal insulation bridge 36, so that a concrete filling layer 40 can be formed above and below the arched thermal insulation bridge 36, and then the concrete can be perfectly filled into the gap between the floor units, which not only realizes the protection of the arched thermal insulation bridge 36, but also can enhance the connection stability between the floor units and the reinforcement components 30.

[0029] See also Figure 3-Figure 6 The first floor unit 10 includes a support frame 11, a steel mesh 12 is laid and installed in the support frame 11, a second support layer 15 is laid and installed at the bottom of the support frame 11, a first support layer 13 is laid in parallel above the second support layer 15, a reinforcing layer 14 is arranged between the first support layer 13 and the second support layer 15, the steel mesh 12 is arranged above the first support layer 13, and the distribution of the steel mesh 12 can ensure the support strength of the floor unit. When fine stone concrete is filled in the support frame 11, the adhesion and fastening degree of concrete and the steel mesh 12 can be improved. After the fine stone concrete is filled in the support frame 11, the prefabrication of the floor unit can be completed, and the first support layer 13 and the second support layer 15 are arranged in parallel, and the reinforcing layer 14 is evenly installed between the two, so as to enhance the connection stability between the two, and also realize the stability of the first support layer 13 and the second support layer 15 in the support frame 11, and also prevent them from deflecting. After the preparation of the floor unit is completed, the support strength of the floor unit is guaranteed.

[0030] It is worth mentioning that aerated concrete filler is filled between the first support layer 13 and the second support layer 15 to form an insulation layer. The aerated concrete filler has the characteristic of high porosity, which can reduce the self-weight of the building. At the same time, the insulation layer formed by it has good insulation effect. Drainage channels 112 corresponding to the insulation layer are opened on the side walls of the support frame 11 to facilitate the arched insulation bridge 36 on the reinforcement component 30 to extend to the drainage channel 112, and the arched insulation bridge 36 is integrally formed with a transition insulation strip 37 extending into the drainage channel 112. Therefore, after the transition insulation strip 37 is introduced into the drainage channel 112, it forms an integrated structure with the insulation layer between the floor units. Moreover, the drainage channel 112 is an arc-shaped channel, and the arc-shaped structure of the arched insulation bridge 36 can make it naturally transition with the floor unit to form an integrated insulation structure, greatly increasing the integrated insulation effect between the floor units and avoiding the occurrence of thermal bridges.

[0031] See also Figure 4-Figure 6The side walls around the support frame 11 are all provided with limiting channels 111 corresponding to the steel mesh 12. The steel mesh 12 includes transverse steel bars 121 and longitudinal steel bars 122 arranged side by side. The transverse steel bars 121 and the longitudinal steel bars 122 are staggered, and the connection points of the two are connected by a hoop. The ends of the transverse steel bars 121 and the longitudinal steel bars 122 extend out of the limiting channel 111. Tie steel rings 39 corresponding to the limiting channel 111 are welded and assembled on the outer side walls of two adjacent groups of drainage tubes 34, and the tie steel rings 39 are connected to the corresponding transverse steel bars 121 and longitudinal steel bars 122 through a hoop. After the support frame 11 is filled with fine stone concrete, the steel mesh 12 is limited inside the support frame 11. The steel mesh 12 cooperates with the first supporting layer 13, the second supporting layer 15 and the reinforcing layer 14 to ensure the supporting strength of the floor unit and improve the supporting safety of the floor unit. When pouring concrete between the floor units, the concrete will naturally flow into the limiting channel 111 and fill the limiting channel 111, so that it can be integrally formed with the fine stone concrete inside the floor unit, thereby completing the connection between the floor units, and sealing the joints between the floor units to improve the waterproof protection. Moreover, it has a pressurized protection effect on the arched insulation bridge 36, so that it is filled in the drainage channel 112 to complete the sealing of the drainage channel 112 and enhance the insulation effect between the floor units.

[0032] See also Figure 3-Figure 6 The first supporting layer 13 includes a first supporting steel plate 131 having the same size as the inner cavity of the supporting frame 11, and the first supporting steel plate 131 is provided with uniformly distributed first hemispherical supporting parts 132 as an integral part thereof. The second supporting layer 15 includes a second supporting steel plate 151 having the same size as the inner cavity of the supporting frame 11, and the second supporting steel plate 151 is provided with uniformly distributed second hemispherical supporting parts 152 as an integral part thereof. The distances between the first supporting steel plate 131 and the second supporting steel plate 151 are the same. The reinforcing layer 14 includes a first I-beam 141 fixedly welded between the first supporting steel plate 131 and the second supporting steel plate 151, and also includes a second I-beam 142 welded between the first hemispherical supporting part 132 and the second hemispherical supporting part 152.

[0033] The first supporting layer 13 and the second supporting layer 15 both include hemispherical arched supporting steels, which not only have good supporting strength, but also the insulation layer formed therebetween has a larger insulation area, so that the floor unit has a better insulation effect and enhances the thermal insulation of the floor unit.

[0034] The present embodiment also discloses a thermal insulation structure, which is applied to the above-mentioned prefabricated building floor, including a basic insulation structure arranged in the floor unit, and the basic insulation structure includes a first supporting layer 13, a second supporting layer 15 and an insulation layer filled therebetween; it also includes an arched insulation bridge 36 and a transition insulation strip 37, and the transition insulation strip 37 and the insulation layer are seamlessly connected.

[0035] When the floor unit is installed on the reinforcement component 30 and the concrete filling layer 40 is poured between the floor units, the basic insulation structure can ensure the thermal insulation effect of the floor unit itself, and the arched insulation bridge 36 between the floor units is integrally formed and encapsulated at the joints, and seamlessly connected with the basic insulation structure, which greatly increases the thermal insulation of the arched insulation bridge 36 between the floor units, so that no thermal bridge will appear between the floor units, thereby improving the thermal insulation.

[0036] It also includes a concrete filling layer 40 filled inside the floor unit and between adjacent floor units. The concrete filling layer 40 not only protects the arched insulation bridge 36, but also strengthens the connection stability between the floor units, and can assist the insulation structure to achieve further insulation operation and enhance the insulation effect.

[0037] The present invention discloses the application of prefabricated building floors in low-rise cross-beam buildings. The reinforcement component 30 facilitates the positioning and installation between the first floor unit 10 and the second floor unit 20. After the concrete filling layer 40 is formed, the reinforcement component 30 and the floor unit can form an integrated structure, and the sealing between the floor units is strengthened. With the help of the laying of the surface layer, the waterproof protection of the floor is achieved. The heat insulation structure attached to the prefabricated building floor can form an integrated insulation layer structure with the floor unit, so that when the floor unit is installed across the beam, thermal bridges can be prevented between the floor units and poor insulation effect at the floor joints can be prevented.

[0038] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, it is still possible for those skilled in the art to modify the technical solutions described in the aforementioned embodiments or to make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. Prefabricated building floor, characterized by: The invention comprises a first floor unit (10) and a second floor unit (20) which are laid side by side and have the same structure, wherein the first floor unit (10) and the second floor unit (20) are mounted on a reinforcing assembly (30), and a concrete filling layer (40) is filled between the reinforcing assembly (30), the first floor unit (10), and the second floor unit (20), and an integrated surface layer (50) is laid on the top of the first floor unit (10) and the second floor unit (20); The reinforcing assembly (30) comprises a prefabricated beam (31), the upper portion of the prefabricated beam (31) being integrally formed with a limiting platform (32), the left and right sides of the limiting platform (32) being provided with supporting grooves (33), the top of the limiting platform (32) being evenly plugged with a drainage tube (34), the outer side wall of the drainage tube (34) being fixedly sleeved with a supporting tray (35), the top of the supporting tray (35) being provided with an arched thermal insulation bridge (36), the arched thermal insulation bridge (36) being sleeved and mounted on the drainage tube (34), and the outer side wall of the drainage tube (34) being provided with a drainage port (38).

2. The assembled building floor according to claim 1, characterized in that: The first floor unit (10) comprises a support frame (11), a steel mesh (12) is installed in the support frame (11), a second support layer (15) is installed in the lower part of the support frame (11), a first support layer (13) is installed above the second support layer (15) in parallel, a reinforcement layer (14) is arranged between the first support layer (13) and the second support layer (15), and the steel mesh (12) is arranged above the first support layer (13).

3. The assembled building floor according to claim 2, characterized in that: An aerated concrete filler is filled between the first support layer (13) and the second support layer (15) to form an insulation layer, the support frame (11) is filled with fine stone concrete, and drainage channels (112) corresponding to the insulation layer are provided on the four side walls of the support frame (11), and the arched insulation bridge (36) is integrally formed with a transition insulation strip (37) extending into the drainage channel (112), the supporting groove (33) matches the first floor unit (10) and the second floor unit (20), and the drainage channel (112) is an arc-shaped channel.

4. The assembled building floor according to claim 2, characterized in that: The support frame (11) is provided with limiting channels (111) corresponding to the steel mesh (12) on the four sides of the side walls. The steel mesh (12) comprises transverse steel bars (121) and longitudinal steel bars (122) arranged side by side. The transverse steel bars (121) and longitudinal steel bars (122) are arranged in a staggered manner, and the connection points of the two are connected by a clamp. The ends of the transverse steel bars (121) and longitudinal steel bars (122) extend out of the limiting channel (111). Tie steel bar rings (39) corresponding to the limiting channel (111) are welded and assembled on the outer side walls of two adjacent groups of drainage tubes (34), and the tie steel bar rings (39) are connected to the corresponding transverse steel bars (121) and longitudinal steel bars (122) by a clamp.

5. The assembled building floor according to claim 2, characterized in that: The first support layer (13) comprises a first support steel plate (131) having the same size as the inner cavity of the support frame (11), and the first support steel plate (131) is provided with uniformly distributed first hemispherical support members (132) as an integral part thereof; the second support layer (15) comprises a second support steel plate (151) having the same size as the inner cavity of the support frame (11), and the second support steel plate (151) is provided with uniformly distributed second hemispherical support members (152) as an integral part thereof; and the distance between the first support steel plate (131) and the second support steel plate (151) is the same.

6. The assembled building floor according to claim 5, characterized in that: The reinforcement layer (14) comprises a first I-beam (141) fixedly welded between a first supporting steel plate (131) and a second supporting steel plate (151), and also comprises a second I-beam (142) welded between a first hemispherical support member (132) and a second hemispherical support member (152).

7. The assembled building floor according to claim 4, characterized in that: The concrete filling layer (40) is filled on the top of the arched thermal insulation bridge (36), and the concrete filling layer (40) is drained to the limiting channel (111) and the first floor unit (10) to be integrally cast and formed, and the concrete filling layer (40) is flush with the tops of the first floor unit (10) and the second floor unit (20), and the concrete flows out through the drainage tube (34) through the drainage port (38) and fills between the limiting platform (32) and the arched thermal insulation bridge (36).

8. A thermal insulation structure applied to the assembled building floor as claimed in claim 3, characterized in that: It comprises a basic thermal insulation structure arranged in a floor unit, wherein the basic thermal insulation structure comprises a first supporting layer (13), a second supporting layer (15) and a thermal insulation layer filled between the two; It also includes an arched thermal insulation bridge (36) and a transition thermal insulation strip (37), wherein the transition thermal insulation strip (37) and the thermal insulation layer are seamlessly connected.

9. The thermal insulation structure according to claim 8, characterized in that: It also includes a concrete filling layer (40) filled inside the floor unit and between adjacent floor units. The arched insulation bridge (36) and the transition insulation strip (37) are made of a low thermal conductivity insulation material, preferably an expanded glass microsphere insulation material, a water-expandable rubber material, or an expanded aerogel composite material.

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