Soundproofing and heat preservation integrated prefabricated composite floor

Abstract

The utility model relates to building structure technical field, especially sound insulation and heat preservation integrated prefabricated composite floor, including spliced floor, the spliced floor top is paved with heat preservation sound insulation board, and the heat preservation sound insulation board top is poured with concrete slab, the spliced floor is embedded with, and the connecting column array is arranged into the connecting column array, the connecting column is vertically arranged and extends upward, and the top is embedded into the concrete slab, and the middle penetrates heat preservation sound insulation board, and the connecting column includes metal core column and the elastic flexible pipe of wrapping metal core column, by with connecting column the spliced floor, heat preservation sound insulation board and concrete slab are connected as the structure whole of collaborative force by the sequential superposition from below to above, guarantee the carrying capacity and the deformation resistance of whole floor, and improve sound insulation performance.

Description

Technical Field

[0001] This utility model relates to the field of building structure technology, and in particular to an integrated prefabricated composite floor slab that combines sound insulation and thermal insulation. Background Technology

[0002] As a horizontal load-bearing component in a building that bears and transmits vertical loads, the floor slab divides the building into several floors along the vertical direction. Currently, residential buildings are mainly high-rise residential buildings, with dozens or even hundreds of households in a single building. If the sound insulation between floors is poor, it will seriously affect the quality of life of the residents in the building. The sound insulation effect between different floors is closely related to the sound insulation performance of the floor slab.

[0003] To improve the sound insulation of floor slabs, existing technologies typically involve laying thermal insulation and soundproofing materials on top of the structural floor slab, followed by pouring a fine aggregate concrete protective layer on top. However, due to the inherent differences between thermal insulation and soundproofing materials and concrete in terms of compressive strength, elastic modulus, and shrinkage rate, the thermal insulation and soundproofing board, as a weak interlayer, makes the fine aggregate concrete protective layer above it prone to cracking under load and temperature and humidity changes, affecting building quality and living experience. Utility Model Content

[0004] The purpose of this utility model is to provide an integrated prefabricated composite floor slab that combines sound insulation and thermal insulation to solve at least one of the above-mentioned technical problems.

[0005] The technical problem solved by this utility model can be achieved by the following technical solution:

[0006] An integrated prefabricated composite floor slab with sound insulation and thermal insulation is provided, comprising a spliced ​​floor slab, on which a thermal insulation and sound insulation board is laid, and a concrete slab is poured on top of the thermal insulation and sound insulation board; an array of connecting columns is pre-embedded within the spliced ​​floor slab; the connecting columns are arranged vertically and extend upwards, with their top ends embedded in the concrete slab and penetrating the thermal insulation and sound insulation board in the middle; each connecting column includes a metal core column and an elastic flexible tube encasing the metal core column; the metal core column is a threaded column; the elastic flexible tube is sleeved on the threaded column and bonded to it; the concrete slab has slots for the connecting columns to enter; the top end of the metal core column is at least 1 mm away from the top of the inner wall of the slot.

[0007] In the above design, the spliced ​​floor slabs, thermal insulation and sound insulation boards and concrete slabs stacked from bottom to top are connected by connecting columns to form a structural whole that works together to bear the load. This ensures the overall load-bearing capacity and deformation resistance of the entire floor slab while improving sound insulation performance.

[0008] Specifically, through the connecting column, the load borne by the concrete slab can be transferred to the spliced ​​floor slab, allowing the concrete slab and the spliced ​​floor slab to share the load together. At the same time, the shear restraint provided by the connecting column can also limit the horizontal displacement and vertical separation of the concrete slab relative to the spliced ​​floor slab, thereby reducing the tensile stress inside the concrete slab and reducing the risk of cracking. Secondly, the flexible tube allows for a small difference in vertical deformation between the concrete slab and the spliced ​​floor slab, which can absorb some of the stress caused by temperature changes or material shrinkage, further reducing the risk of cracking of the concrete slab.

[0009] In terms of sound insulation performance, the metal core column does not contact the concrete slab vertically, which not only ensures the horizontal shear resistance of the connecting column, but also eliminates the sound bridge effect of impact sound propagating vertically through the connecting column. This enables the connecting column to achieve the technical effect of being shear-resistant but not tensile-resistant, and bearing load but not transmitting sound, thereby improving the impact sound insulation performance of the floor slab.

[0010] Preferably, the spliced ​​floor slab has a steel mesh, referred to as the bottom slab steel mesh; the concrete slab has a steel mesh, referred to as the composite slab steel mesh; the bottom slab steel mesh and the composite slab steel mesh extend from the four sides of the spliced ​​floor slab and the concrete slab, respectively; the connecting column passes through the bottom slab steel mesh and the composite slab steel mesh in sequence.

[0011] Preferably, the diameter of the metal core column is 8mm to 25mm; and the wall thickness of the elastic tube is 3mm to 10mm.

[0012] Preferably, the outer surface of the flexible tube is provided with at least two annular grooves spaced apart along the axial direction.

[0013] Preferably, the top end of the flexible tube is higher than the top end of the metal core, and the top end of the flexible tube is a closed end, with the top end of the metal core abutting against the closed end of the flexible tube.

[0014] Preferably, the top end of the flexible tube is higher than the top end of the metal core, and the top end of the flexible tube is a closed end. The cavity between the top end of the metal core and the closed end of the flexible tube is filled with foamed polyurethane to form a polyurethane filler.

[0015] Preferably, a rubber cap is fitted at the top of the metal core column, the upper surface of the rubber cap is in contact with the inner wall of the top of the slot, and the edge of the rubber cap has a downwardly extending annular flange, which is fitted on the outer side of the top of the elastic tube.

[0016] Preferably, the top of the rubber cover has a rough surface.

[0017] Preferably, the spliced ​​floor slab is composed of multiple precast slabs; each precast slab has a pre-embedded steel mesh, with a row of steel bars extending from each of the four sides of the precast slab; each of the four sides of the precast slab is provided with a row of slots for inserting a row of steel bars from an adjacent precast slab for splicing.

[0018] In summary, by connecting the spliced ​​floor slabs, thermal insulation and soundproofing panels and concrete slabs stacked sequentially from bottom to top with connecting columns to form a structural whole that works together to bear the load, the overall load-bearing capacity and deformation resistance of the entire floor slab are ensured while the sound insulation performance is improved. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the overall structure of the integrated prefabricated composite floor slab with sound insulation and thermal insulation of this utility model;

[0020] Figure 2 This is a schematic diagram of the connection between the bottom slab steel mesh and the surrounding beam and wall support components of the integrated prefabricated composite floor slab with sound insulation and heat preservation of this utility model.

[0021] Figure 3 This is a top view of the spliced ​​floor slab of the integrated prefabricated composite floor slab with sound insulation and heat preservation of this utility model.

[0022] Figure 4 This is a cross-sectional structural schematic diagram of the connecting column in Embodiment 1 of the integrated prefabricated composite floor slab with sound insulation and thermal insulation of this utility model.

[0023] Figure 5 This is a cross-sectional structural diagram of the connecting column in Embodiment 2 of the integrated prefabricated composite floor slab with sound insulation and thermal insulation of this utility model.

[0024] Figure 6 This is a structural schematic diagram of the connecting column in Embodiment 3 of the integrated prefabricated composite floor slab with sound insulation and heat preservation of this utility model.

[0025] In the diagram, 1. Concrete slab; 2. Thermal insulation and soundproofing board; 3. Spliced ​​floor slab; 4. Connecting column; 41. Metal core column; 42. Flexible tube; 43. Annular groove; 44. Closed end; 45. Polyurethane filler; 46. Rubber cover; 5. Base plate steel mesh; 6. Composite slab steel mesh. Detailed Implementation

[0026] To make the technical means, creative features, objectives and effects of the utility model easier to understand, the utility model will be further explained below with reference to specific illustrations.

[0027] refer to Figure 1 and Figure 2 and Figure 3The integrated precast composite floor slab with sound insulation and thermal insulation includes a spliced ​​floor slab 3, a thermal insulation and sound insulation board 2 laid on top of the spliced ​​floor slab 3, and a concrete slab 1 poured on top of the thermal insulation and sound insulation board 2; an array of connecting columns 4 are pre-embedded in the spliced ​​floor slab 3; the connecting columns 4 are arranged vertically and extend upward, with their top ends embedded in the concrete slab 1 and the thermal insulation and sound insulation board 2 passing through the middle; the connecting column 4 includes a metal core column 41 and an elastic flexible tube 42 that wraps around the metal core column 41; the metal core column 41 is a threaded column; the elastic flexible tube 42 is sleeved on the outside of the threaded column and bonded to the threaded column; the concrete slab 1 has a slot for the connecting column 4 to enter; the top end of the metal core column 41 is at least 1 mm away from the top of the inner wall of the slot.

[0028] The spliced ​​floor slab 3 contains a steel mesh, called the bottom slab steel mesh 5; the concrete slab 1 contains a steel mesh, called the composite slab steel mesh 6; the bottom slab steel mesh 5 and the composite slab steel mesh 6 extend from the four sides of the spliced ​​floor slab 3 and the concrete slab 1 respectively; the connecting column 4 passes through the bottom slab steel mesh 5 and the composite slab steel mesh 6 in sequence.

[0029] The diameter of the metal core 41 is 8~25mm; the wall thickness of the flexible tube 42 is 3mm~10mm.

[0030] The outer surface of the flexible tube 42 is provided with at least two annular grooves 43 spaced apart along the axial direction.

[0031] The spliced ​​floor slab 3 is composed of multiple precast slabs; each precast slab has a pre-embedded steel mesh, with a row of steel bars extending from each of the four sides of the precast slab; each of the four sides of the precast slab has a row of slots for inserting a row of steel bars from other adjacent precast slabs for splicing.

[0032] In the above design, the connecting column 4 connects the spliced ​​floor slab 3, the thermal insulation and sound insulation board 2 and the concrete slab 1, which are stacked from bottom to top, into a structural whole that works together to bear the load, ensuring the overall load-bearing capacity and deformation resistance of the floor slab while improving the sound insulation performance.

[0033] Specifically, through the action of the connecting column 4, the load borne by the concrete slab 1 can be transferred to the spliced ​​floor slab 3, so that the concrete slab 1 and the spliced ​​floor slab 3 can share the load together. At the same time, the shear constraint provided by the connecting column 4 can also limit the horizontal displacement and vertical separation of the concrete slab 1 relative to the spliced ​​floor slab 3, thereby reducing the tensile stress inside the concrete slab 1 and reducing the risk of cracking. Secondly, the elastic flexible tube 42 allows for a small vertical deformation difference between the upper and lower concrete layers, which can absorb some of the stress caused by temperature changes or material shrinkage, further reducing the risk of cracking of the concrete slab 1.

[0034] In terms of sound insulation performance, the metal core column 41 does not contact the concrete slab 1 in the vertical direction, which not only ensures the horizontal shear resistance of the connecting column 4, but also eliminates the sound bridge effect of impact sound propagating vertically through the connecting column 4. This enables the connecting column 4 to achieve the technical effect of being shear-resistant but not tensile-resistant, and bearing load but not transmitting sound, thereby improving the impact sound insulation performance of the floor slab.

[0035] In addition, by manufacturing precast slabs in the factory and laying insulation materials on them, the factory production conditions are controllable, the insulation materials can be fully aged, and the laying quality is guaranteed. This avoids the subsequent shrinkage and cracking of the surface layer caused by insufficient aging of materials or improper laying during on-site construction, thereby improving quality and reducing on-site wet operation procedures.

[0036] The precast slabs are made of ordinary reinforced concrete or milled steel fiber concrete.

[0037] The cross-sectional shape of the connecting post 4 is one of a circle, a square, or an irregular shape, and the shape of the flexible tube 42 matches the shape of the connecting post 4.

[0038] like Figure 1 and Figure 2 and Figure 3 The spliced ​​floor slab 3 has a steel mesh, called the bottom slab steel mesh 5; the concrete slab 1 has a steel mesh, called the composite slab steel mesh 6; the bottom slab steel mesh 5 and the composite slab steel mesh 6 extend from the four sides of the spliced ​​floor slab 3 and the concrete slab 1 respectively; the connecting column 4 passes through the bottom slab steel mesh 5 and the composite slab steel mesh 6 in sequence.

[0039] The bottom slab reinforcement mesh 5 and the composite slab reinforcement mesh 6 enhance the crack resistance and load-bearing capacity of the spliced ​​floor slab 3 and the concrete slab 1, respectively. The protruding reinforcement mesh facilitates the lateral connection of adjacent spliced ​​floor slabs at the joint through the lap of the reinforcement mesh, so that multiple spliced ​​floor slabs can be spliced ​​together to form an integral load-bearing structure. On the other hand, the protruding part is anchored into the surrounding beams and walls, so that the floor slab is connected with the surrounding supporting components to form a complete structural system.

[0040] The diameter of the metal core column 41 is 8mm to 25mm; the wall thickness of the flexible tube 42 is 3mm to 10mm. This ensures that the connecting column 4 has sufficient horizontal shear bearing capacity, while avoiding a reduction in shear force transmission efficiency due to excessive wall thickness of the flexible tube 42.

[0041] The metal core post 41 can be made of one of the following materials: ordinary steel, stainless steel, or fiber-reinforced polymer (FRP).

[0042] The flexible tube is made of sound-insulating pads or sound-insulating adhesives. The sound-insulating pads can be rubber sound-insulating pads, polyurethane sound-insulating pads, or PVC sound-insulating pads, and the sound-insulating adhesives can be butyl rubber putty, polyurethane sealant, or acrylic sound-insulating adhesives.

[0043] The outer surface of the flexible tube 42 is provided with at least two annular grooves 43 spaced axially. The annular grooves 43 can increase the contact area and mechanical interlocking force between the flexible tube 42 and the thermal insulation and sound insulation board 2 and the concrete, and improve the bonding reliability between the connecting column 4 and the surrounding material interface.

[0044] The spliced ​​floor slab 3 is composed of multiple precast slabs. Each precast slab has a pre-embedded steel mesh, with a row of steel bars extending from each of the four sides. Each of the four sides of the precast slab has a row of slots for inserting the steel bars of adjacent precast slabs, allowing for splicing. This achieves splicing connections between adjacent precast slabs, enhancing the connection strength and overall integrity at the joints.

[0045] During construction, precast slabs are made in the factory, with a row of steel bars extending from each of the four sides of the precast slab. After the precast slabs have been cured to the required strength, thermal insulation and soundproofing panels are laid on top of the precast slabs.

[0046] The thermal insulation and soundproofing panel can be formed in one of the following two ways: First, a foaming material is directly sprayed onto the upper surface of the precast panel, and after foaming and curing, a thermal insulation and soundproofing panel is formed. The foaming material is rigid polyurethane foam. During the foaming process, the material wraps around the connecting column 4, and the connecting column 4 extends upwards out of the thermal insulation and soundproofing panel; Second, finished panels such as extruded polystyrene board, rock wool board, or foamed cement board are used. Perforations are pre-drilled on the panels corresponding to the positions of the connecting columns 4. The panels are then laid on top of the precast panel, and the connecting column 4 passes through the perforations and extends upwards out of the thermal insulation and soundproofing panel.

[0047] In addition, thermal insulation and sound insulation panels can be made of single materials such as extruded polystyrene board, rock wool board or foamed cement board, or they can be multi-layer composite materials made of multiple of the above materials.

[0048] At this point, the prefabricated panels, thermal insulation and soundproofing panels, and connecting column 4 of the integrated structure have been prefabricated in the factory;

[0049] Multiple precast slabs are positioned at their designed locations on the construction site. At the joints of adjacent precast slabs, protruding steel bars are inserted into the corresponding slots of other adjacent precast slabs. The steel mesh embedded in the precast slabs is connected to form an integral bottom slab steel mesh 5. Each thermal insulation and sound insulation board is spliced ​​together to form a thermal insulation and sound insulation board 2. Each precast slab is spliced ​​together to form an integral spliced ​​floor slab 3.

[0050] The steel bars extending from the four sides of the bottom slab steel mesh 5 are anchored into the surrounding supporting beams or walls. Concrete is poured on top of the spliced ​​floor slab 3, and the composite slab steel mesh 6 is laid in the concrete. The steel bars extending from the four sides of the composite slab steel mesh 6 also extend into the surrounding beam and wall supporting components. Concrete is poured again, and the concrete encloses the connecting column 4 to form a concrete slab 1. The concrete slab 1 is connected to the spliced ​​floor slab 3 and the thermal insulation and sound insulation board 2 as a whole through the connecting column 4. At the same time, the concrete slab 1, the thermal insulation and sound insulation board 2, the spliced ​​floor slab 3 and the surrounding beam and wall supporting components are connected as a whole through the extension steel bars anchored and the overall concrete pouring.

[0051] Example 1

[0052] like Figure 4 This is the first embodiment of the present utility model.

[0053] The top of the flexible tube 42 is higher than the top of the metal core column 41, and the top of the flexible tube 42 is a closed end 44. The top of the metal core column 41 abuts against the closed end 44 of the flexible tube 42. The top of the metal core column 41 is completely covered inside the flexible tube 42, avoiding rigid contact between the metal core column 41 and the concrete slab 1, cutting off the sound bridge path of the impact sound propagating vertically through the top of the connecting column 4, and enhancing the sound insulation effect of the connecting column 4.

[0054] Example 2

[0055] like Figure 5 This is the second embodiment of the present utility model.

[0056] The top of the flexible tube 42 is higher than the top of the metal core column 41, and the top of the flexible tube 42 is a closed end 44. The cavity between the top of the metal core column 41 and the closed end 44 of the flexible tube 42 is filled with foamed polyurethane to form a polyurethane filler 45. On the one hand, it can provide reliable vertical support for the closed end 44 of the flexible tube 42, preventing the closed end 44 from being crushed and deformed by the concrete pressure when the concrete slab 1 is poured. On the other hand, the foamed polyurethane material has a large number of closed-cell structures and has good elasticity and damping characteristics. It can form a flexible vertical isolation layer between the top of the metal core column 41 and the closed end 44 of the flexible tube 42, avoiding direct contact between the metal core column 41 and the closed end 44 to form a rigid sound transmission path.

[0057] Example 3

[0058] like Figure 6 This is the third embodiment of the present invention.

[0059] A rubber cap 46 is fitted onto the top of the metal core post 41. The upper surface of the rubber cap 46 fits against the inner wall of the top of the slot. The edge of the rubber cap 46 has a downward-extending annular flange, which is fitted onto the outer side of the top of the flexible tube 42. The rubber cap 46 completely isolates the top of the metal core post 41 from the concrete slab 1, cutting off the sound bridge path of the impact sound propagating vertically through the top of the connecting post 4. The thickness of the rubber cap 46 is not less than 1 mm.

[0060] Furthermore, the top of the rubber cover 46 is roughened. This increases the contact area and friction coefficient between the rubber cover 46 and the inner wall of the slot top, preventing the rubber cover 46 from slipping slightly relative to the concrete and ensuring that the preset distance between the top of the metal core 41 and the inner wall of the slot top remains stable after construction.

[0061] The foregoing has shown and described the basic principles and main features of the utility model, as well as its advantages. Those skilled in the art should understand that the utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of the utility model. Various changes and modifications can be made to the utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model. The scope of protection of the utility model is defined by the appended claims and their equivalents.

Claims

1. An integrated precast composite floor slab with sound insulation and thermal insulation properties, characterized in that: The system includes a spliced ​​floor slab (3), on which a thermal insulation and sound insulation board (2) is laid, and on which a concrete slab (1) is poured. The spliced ​​floor slab (3) is pre-embedded with an array of connecting columns (4) arranged in a connecting column array; The connecting column (4) is arranged vertically and extends upward, with its top end embedded in the concrete slab (1) and the thermal insulation and sound insulation board (2) passing through the middle. The connecting post (4) includes a metal core post (41) and an elastic tube (42) that wraps around the metal core post (41). The metal core post (41) is a threaded post; The flexible tube (42) is sleeved on the outside of the threaded post and is bonded to the threaded post; The concrete slab (1) has a slot for the connecting column (4) to be inserted. The top of the metal core (41) is at least 1 mm away from the top of the inner wall of the slot.

2. The integrated prefabricated composite floor slab with sound insulation and thermal insulation as described in claim 1, characterized in that: The spliced ​​floor slab (3) has a steel mesh inside, which is called the bottom slab steel mesh (5). The concrete slab (1) has a steel mesh inside, which is called the composite slab steel mesh (6). The bottom slab reinforcement mesh (5) and the composite slab reinforcement mesh (6) extend from the four sides of the spliced ​​floor slab (3) and the concrete slab (1), respectively; The connecting column (4) passes through the bottom plate steel mesh (5) and the composite plate steel mesh (6) in sequence.

3. The integrated prefabricated composite floor slab with sound insulation and thermal insulation as described in claim 1, characterized in that: The diameter of the metal core (41) is 8mm~25mm; The wall thickness of the elastic tube (42) is 3mm to 10mm.

4. The integrated prefabricated composite floor slab with sound insulation and thermal insulation as described in claim 1, characterized in that: The outer surface of the flexible tube (42) is provided with at least two annular grooves (43) spaced apart along the axial direction.

5. The integrated prefabricated composite floor slab with sound insulation and thermal insulation as described in claim 1, characterized in that: The top end of the flexible tube (42) is higher than the top end of the metal core (41), and the top end of the flexible tube (42) is a closed end (44), and the top end of the metal core (41) abuts against the closed end (44) of the flexible tube (42).

6. The integrated prefabricated composite floor slab with sound insulation and thermal insulation as described in claim 1, characterized in that: The top end of the flexible tube (42) is higher than the top end of the metal core (41), and the top end of the flexible tube (42) is a closed end (44). The cavity between the top end of the metal core (41) and the closed end (44) of the flexible tube (42) is filled with foamed polyurethane to form a polyurethane filler (45).

7. The integrated prefabricated composite floor slab with sound insulation and thermal insulation as described in claim 1, characterized in that: The top of the metal core (41) is fitted with a rubber cap (46), the upper surface of which is in contact with the inner wall of the top of the slot, and the edge of the rubber cap (46) has a downward-extending annular flange, which is fitted on the outer side of the top of the elastic tube (42).

8. The integrated prefabricated composite floor slab with sound insulation and thermal insulation as described in claim 7, characterized in that: The top of the rubber cap (46) has a rough surface.

9. The integrated prefabricated composite floor slab with sound insulation and thermal insulation as described in claim 1, characterized in that: The spliced ​​floor slab (3) is composed of multiple precast slabs spliced ​​together; Each precast slab has a pre-embedded steel mesh, with a row of steel bars extending from each of the four sides of the precast slab. The precast slab has a row of slots on each of its four sides for inserting a row of steel bars into adjacent precast slabs for splicing.

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