Prefabricated sound-insulating floor structure

Abstract

The present invention discloses a prefabricated sound-insulating floor slab structure, which includes a concrete base layer. A sound-insulating concrete layer A is fixed to the bottom of the concrete base layer, and a sound-insulating concrete layer B is fixed to the top of the concrete base layer. A core board is fixed in the middle of the concrete base layer. The part of the core board corresponding to the concrete base layer is a corrugated board, which is uniformly arranged along the width direction of the concrete base layer. Connecting rods A are symmetrically fixed to the outer sides of the side walls of the core board corresponding to the width direction of the concrete base layer respectively, and connecting rods B are symmetrically fixed to the outer sides of the side walls of the core board corresponding to the length direction of the concrete base layer respectively. From the above structure, it can be seen that for the prefabricated sound-insulating floor slab structure of the present invention, by respectively arranging the sound-insulating concrete layer A and the sound-insulating concrete layer B at the bottom and top of the concrete base layer, effective sound insulation is achieved. The sound-insulating concrete can ensure the connection strength with the concrete base layer, effectively avoiding falling off or separation, and the strength of the sound-insulating concrete is also sufficient for the connection strength with other media during subsequent decoration construction.

Description

Technical Field

[0001] The present invention relates to the technical field of precast floor production and construction, and particularly to a precast sound-insulating floor structure. Background Art

[0002] Precast and assembled buildings are precast component products for assembling and constructing houses in an industrialized way of producing products by an assembly line. Such precast and assembled buildings can effectively improve the production and construction efficiency of buildings, and can also effectively reduce the damage to the surrounding environment during production and construction; in addition, since they are precast components, components with different strengths and thicknesses can be provided according to the construction requirements of different buildings to meet the construction requirements of the buildings. According to the main structural forms of the buildings, they can be divided into: panel assembly type, such as large-panel buildings; box assembly type, such as reinforced concrete box buildings, wooden box buildings, etc.; frame assembly type, such as reinforced concrete skeleton assembly buildings, light steel assembly buildings, and light wood structure buildings, etc. For precast and assembled residential buildings, currently, the relatively popular one is the reinforced concrete skeleton assembly building.

[0003] Existing residential buildings are mainly high-rise residential buildings. The number of households in a building can reach hundreds. If so many people live in the same building and the sound insulation effect between floors is poor, it will have a greater impact on the quality of life of the people in the building. Therefore, as people's requirements for the quality of life continue to increase, in actual life of residential buildings, the requirements for the sound insulation effect are also getting higher and higher. The sound insulation between different floors is closely related to the sound insulation effect of the floor slab. In current residential buildings, the construction related to floor slab sound insulation is carried out by the owners who have a need for sound insulation inside their own houses during the decoration period. Since not all the owners in the building carry out the sound insulation construction during decoration, when only individual owners carry out the sound insulation construction inside their own houses, the sound insulation effect cannot reach the ideal effect.

[0004] In addition, with the popularization of floor heating, floor heating has gradually become the preferred way of heating in people's lives in most parts of the country. The installation of floor heating is also installed by the owners during decoration. Due to the different technical levels of different decoration companies and different construction workers, and the different floor heating materials and material qualities selected, the floor heating effects and installation construction qualities of the installed and constructed floor heating are uneven, resulting in uneven heating effects achieved by central heating. Even if the installation construction quality is poor and the selected material quality is low, it will cause the water in the floor heating pipes to seep out from the pipes, resulting in floor slab seepage, which not only affects the owner's own house, but also affects the lower or adjacent neighbors. Moreover, the repair construction is complex, the construction period is long, and the construction cost is high.

[0005] It is well known to those skilled in the art that it is most convenient to route the water and electricity lines in a house through the ground, and the amount of pipe materials used is the least. However, the current wiring in residential buildings generally runs through the walls. This is because the water connection interfaces in the current houses basically only lead to the kitchen and the bathroom, and the water lines in the remaining positions in the house need to be modified by the owners during the decoration. The circuit also only leads a lighting line and a socket line from the distribution box to each room through the wire pipes, and the remaining lines also need to be modified by the owners themselves. During the process of modifying the above water and electricity lines, the owners will inevitably damage the ground of the house they purchased. To ensure construction safety, during the construction of the building, the water and electricity pipelines are not routed through the floor slab but only through the wall.

[0006] Therefore, researching a precast floor slab that can facilitate the pre-routing of water and electricity pipes, effectively have a sound insulation effect, and also facilitate the construction and heat conduction of the floor heating, so as to overcome the above technical problems and change the previous technical habits, is a relatively new technical direction in this field. In addition, it is necessary to take into account the strength of the floor slab and reduce the decoration cost of the owners during the later decoration, and propose a set of precast floor slab structures and corresponding production methods as well as precast floor slab structures and corresponding construction methods. Summary of the Invention

[0007] The purpose of the present invention is to overcome the deficiencies of the prior art and provide a precast sound insulation floor slab structure. By respectively arranging a sound insulation concrete layer A and a sound insulation concrete layer B at the bottom and top of the concrete base layer, effective sound insulation can be achieved. Moreover, the material of the sound insulation concrete layer is sound insulation concrete, which can ensure the connection strength with the concrete base layer, effectively avoid falling off or separation, and the strength of the sound insulation concrete is also sufficient for the connection strength with other media during the subsequent decoration construction.

[0008] The technical solution adopted by the present invention is:

[0009] A precast sound insulation floor slab structure, including a precast floor slab body. The precast floor slab body includes a concrete base layer. A sound insulation concrete layer A is fixedly connected to the bottom of the concrete base layer, and a sound insulation concrete layer B is fixedly connected to the top of the concrete base layer. A core board is fixedly connected to the middle of the concrete base layer. The part of the core board corresponding to the concrete base layer is a corrugated board and is uniformly arranged in sequence along the width direction of the concrete base layer. Connecting rods A are symmetrically and fixedly connected to the outer sides of the side walls of the core board corresponding to the width direction of the concrete base layer respectively, and connecting rods B are symmetrically and fixedly connected to the outer sides of the side walls of the core board corresponding to the length direction of the concrete base layer respectively.

[0010] A further improvement of the present invention is that the connecting rods A are respectively arranged at the peak and trough positions of the corrugated board.

[0011] A further improvement of the present invention is that the part of the connecting rod A extending out of the concrete base is wound into a spiral part, and one end of the connecting rod A far from the concrete base is wound to be parallel to the plate surface of the precast floor slab body.

[0012] A further improvement of the present invention is that a connecting plate parallel to the plate surface of the precast floor slab body is fixedly arranged at the edge of the side wall of the core plate corresponding to the length direction of the concrete base. The connecting plate extends out of the side wall of the concrete base in the length direction, and the connecting rod B is fixedly connected to one side edge of the connecting plate far from the concrete base.

[0013] A further improvement of the present invention is that the connecting rod B is provided with a strip-shaped through hole along the length direction of the connecting rod B.

[0014] A further improvement of the present invention is that a plurality of convex rods are evenly arranged on the top surface of the sound-insulating concrete layer B.

[0015] A further improvement of the present invention is that the part of the core plate corresponding to the inside of the concrete base is a mesh plate with a plurality of flow holes evenly distributed.

[0016] A further improvement of the present invention is that steel bar distribution layers parallel to the plate surface of the precast floor slab body are respectively fixedly arranged in the sound-insulating concrete layer A and the sound-insulating concrete layer B. The steel bar distribution layers are respectively fixedly connected to the core plate through a plurality of connecting vertical rods, and the connecting vertical rods are perpendicular to the plate surface of the precast floor slab body.

[0017] A further improvement of the present invention is that the connecting vertical rods fixed to the sound-insulating concrete layer A are fixed at the wave crest positions of the corrugated plate of the core plate, and the connecting vertical rods fixed to the sound-insulating concrete layer B are fixed at the wave trough positions of the corrugated plate of the core plate.

[0018] A further improvement of the present invention is that the connecting vertical rods are connecting bolts, and the connecting bolts respectively fix and connect the corresponding positions of the core plate and the steel bar distribution layer through nuts.

[0019] The beneficial effects of the present invention are as follows:

[0020] First, for the precast sound-insulating floor slab structure of the present invention, by respectively arranging the sound-insulating concrete layer A and the sound-insulating concrete layer B at the bottom and top of the concrete base, effective sound insulation can be achieved. Moreover, the material of the sound-insulating concrete layer is sound-insulating concrete, which can ensure the connection strength with the concrete base, effectively avoid falling off or separation, and the strength of the sound-insulating concrete is also sufficient for the connection strength with other media during subsequent decoration construction.

[0021] Second, for the prefabricated sound-insulating floor slab structure of the present invention, through the corrugated plate structure of the core plate, not only can the core plate have good compressive and tensile properties in the up and down directions and the waveform distribution direction of the corrugated plate with respect to the concrete base layer, but also the connecting rod A can form two upper and lower rows corresponding to the positions of the wave crests and wave troughs, thereby improving the connection strength between the two ends of the floor slab body and the beam.

[0022] Third, for the prefabricated sound-insulating floor slab structure of the present invention, the spiral part formed by the connecting rod A can not only effectively increase the contact range between the connecting rod and the concrete of the connecting layer and improve the strength of the concrete of the connecting layer, but also the spiral structure of the spiral part is convenient for axial tension and contraction, so that it can be adjusted according to the distance between the floor slab body and the beam during actual assembly.

[0023] Fourth, for the prefabricated sound-insulating floor slab structure of the present invention, through the convex rods provided on the top of the sound-insulating concrete layer B, not only can the floor slab be easily formed into a wiring groove by removing the convex rods at the corresponding positions according to the water and electricity pipe wiring diagram during construction, which is convenient for prefabricating water and electricity pipelines in the floor slab, but also the height of the sound-insulating concrete layer can be further increased, further improving the sound-insulating effect of the floor slab.

[0024] Fifth, for the prefabricated sound-insulating floor slab structure of the present invention, since the core plate is a mesh plate structure, not only the weight of the core plate and the floor slab is effectively reduced, but also the pouring of the concrete base layer is facilitated, thereby reducing the production cost; moreover, the connection effect between the core plate and the base concrete of the concrete base layer can be better, and thus the strength of the concrete base layer is ensured.

[0025] Sixth, for the prefabricated sound-insulating floor slab structure of the present invention, the core plate is connected and fixed to the steel bar layer in the sound-insulating concrete layer through the connecting vertical rods, thereby further improving the connection strength between the concrete base layer and the sound-insulating concrete layer.

[0026] Seventh, for the prefabricated sound-insulating floor slab structure of the present invention, the wave crest position of the corrugated plate of the core plate is connected to the steel bar layer of the sound-insulating concrete layer A through the connecting vertical rods, and the wave trough position of the corrugated plate of the core plate is connected to the steel bar layer of the sound-insulating concrete layer B through the connecting vertical rods, so that internal stress can be generated in the corrugated plate, and further the compressive, bending and flexural properties of the concrete base layer are greatly improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 It is a top view schematic diagram of the prefabricated floor slab body.

[0028] Figure 2 It is a top view schematic diagram of the prefabricated floor slab body after a wiring groove is opened.

[0029] Figure 3 It is a main view enlarged schematic diagram of the prefabricated floor slab body.

[0030] Figure 4 It is a main view sectional enlarged schematic diagram of the floor slab formed during the construction of the precast floor slab body. Embodiment

[0031] As Figures 1 to 4 It can be seen that the precast sound insulation floor slab structure includes a precast floor slab body 1. The precast floor slab body 1 includes a concrete base layer 2. A sound insulation concrete layer A4 is fixedly connected to the bottom of the concrete base layer 2. A sound insulation concrete layer B5 is fixedly connected to the top of the concrete base layer 2. A core plate 3 is fixedly connected to the middle part inside the concrete base layer 2. The part of the core plate 3 corresponding to the concrete base layer 2 is a corrugated plate and is uniformly arranged in sequence along the width direction of the concrete base layer 2. On the outer sides of the side walls of the core plate 3 corresponding to the width direction of the concrete base layer 2, connecting rods A6 are symmetrically and fixedly connected respectively. On the outer sides of the side walls of the core plate 3 corresponding to the length direction of the concrete base layer 2, connecting rods B7 are symmetrically and fixedly connected respectively.

[0032] The connecting rods A6 are respectively arranged at the peak positions and valley positions of the corrugated plate.

[0033] The part of the connecting rod A6 extending out of the concrete base layer 2 is wound into a spiral part 9, and one end of the connecting rod A6 far from the concrete base layer 2 is wound to be parallel to the plate surface of the precast floor slab body 1.

[0034] At the edges of the side walls of the core plate 3 corresponding to the length direction of the concrete base layer 2, a connecting plate 10 parallel to the plate surface of the precast floor slab body 1 is fixedly provided. The connecting plate 10 extends out of the side wall of the concrete base layer 2 in the length direction. The connecting rod B7 is fixedly connected to the outer edge of one side of the connecting plate 10 far from the concrete base layer 2.

[0035] The connecting rod B7 is provided with a strip-shaped through hole 11 along the length direction of the connecting rod B7.

[0036] On the top surface of the sound insulation concrete layer B5, a plurality of convex rods 8 are evenly provided.

[0037] The part of the core plate 3 corresponding to the inside of the concrete base layer 2 is a mesh plate with a plurality of flow holes evenly distributed.

[0038] Reinforcement layers 22 parallel to the plate surface of the precast floor slab body 1 are respectively fixedly provided in the sound insulation concrete layer A4 and the sound insulation concrete layer B5. The reinforcement layers 22 are respectively fixedly connected to the core plate 3 through a plurality of connecting vertical rods 23. The connecting vertical rods 23 are perpendicular to the plate surface of the precast floor slab body 1.

[0039] The connecting vertical rods 23 fixed to the sound insulation concrete layer A4 are fixed at the peak positions of the corrugated plate of the core plate 3, and the connecting vertical rods 23 fixed to the sound insulation concrete layer B5 are fixed at the valley positions of the corrugated plate of the core plate 3.

[0040] The connecting vertical rod 23 is a connecting bolt, and the connecting bolts respectively fix and connect the corresponding positions of the core plate 3 and the steel bar layer 22 through nuts 24.

[0041] A method for producing the prefabricated sound insulation floor slab as described above includes the following steps:

[0042] 1) First, perform cutting on the flat blank plate of the core plate 3 with a plurality of flow holes evenly distributed, so that a plurality of connecting rods B7 are symmetrically formed on both edges in the length direction of the flat blank plate, and a plurality of connecting rods A6 are symmetrically formed on both edges in the width direction;

[0043] 2) Then, perform drilling on the connecting rod B7 of the cut flat blank plate to form a strip-shaped through hole 11;

[0044] 3) Next, twist the connecting rod A6 to form a spiral part 9;

[0045] 4) Then, perform molding on the flat blank plate to form a corrugated plate with corrugated structures evenly arranged in sequence along the width direction of the flat blank plate, and make there be flow holes at both the wave crests and wave troughs of the corrugated plate;

[0046] 5) Then, tie up the steel bar layer 22 of the sound insulation concrete layer A4, then place the steel bar layer 22 of the sound insulation concrete layer A4 directly above the core plate 3, and make the steel bar layer 22 match the corrugated plate of the core plate 3, and then mark the positions of the flow holes corresponding to the wave crests of the corrugated plate on the steel bar layer 22;

[0047] 6) Next, pass the connecting bolts upward through the steel bar layer 22 from the bottom of the marked position of the steel bar layer 22 of the sound insulation concrete layer A4, and fix the ends of the connecting bolts to the steel bar layer 22 through nuts 24;

[0048] 7) Then, add the mixed and stirred sound insulation concrete into the rectangular groove casting mold, and scrape the top surface of the sound insulation concrete to be horizontal. Then, when the top surface of the sound insulation concrete is at the upper part of the rectangular groove casting mold, place the steel bar layer 22 of the sound insulation concrete layer A4 with the connecting bolts fixed on the top surface of the sound insulation concrete, and continue to add the mixed and stirred sound insulation concrete into the rectangular groove casting mold. After scraping the top surface of the sound insulation concrete to be horizontal again, make it higher than the top of the steel bar layer 22 in the rectangular groove casting mold;

[0049] 8) During the solidification process of the sound-insulating concrete layer A4, connective bolts are upwardly inserted through the through-holes at the wave troughs of the corrugated plates of the core plate 3, nuts 24 are threadedly connected to the upper parts of the connective bolts passing upward through the through-holes at the wave troughs, the steel bar layer 22 of the sound-insulating concrete layer B5 is horizontally placed on the nuts 24, and the connective bolts passing through the through-holes at the wave troughs continue to pass upward through the steel bar layer 22 of the sound-insulating concrete layer B5 and then another nut 24 is threadedly connected thereto, so that the steel bar layer 22 of the sound-insulating concrete layer B5 is clamped and fixed by the two upper and lower nuts 24;

[0050] 9) After the sound-insulating concrete layer A4 solidifies, long-side heightening side plates A are hermetically spliced and fixed to the tops of the side walls in the length direction of the rectangular groove casting mold, and the connecting plates 10 of the core plate 3 are placed on the tops of the long-side heightening side plates A, so that the bottoms of the long-side heightening side plates A are hermetically connected to the tops of the side walls in the length direction of the rectangular groove casting mold, and the corrugated plates of the core plate 3 are located within the range of the rectangular groove mold. At this time, the connective bolts fixedly connected to the tops of the connective bolts of the sound-insulating concrete layer A4 respectively pass upward through the through-holes at the wave crests of the corrugated plates, and the tops of the wave crests of the corrugated plates of the core plate 3 are fixed to the connective bolts through the nuts 24;

[0051] 10) The nuts 24 at the tops of the wave crests of the corrugated plates of the core plate 3 are screwed downward, so that a prestress for upward restoring action is generated in the upper waveform structure of the corrugated plates;

[0052] 11) Wide-side heightening side plates are spliced and fixed to the tops of the side walls in the width direction of the rectangular groove casting mold. The wide-side heightening side plates are provided with matching connecting holes corresponding to the spiral parts 9, and the connecting holes are hermetically connected to the spiral parts 9;

[0053] 12) Then, long-side heightening side plates B are spliced and fixed to the tops of the connecting plates 10 corresponding to the long-side heightening side plates A, so that the bottoms of the wide-side heightening side plates are hermetically connected to the tops of the side walls in the width direction of the rectangular groove casting mold, the two ends of the wide-side heightening side plates are hermetically connected to the two ends of the long-side heightening side plates A and the two ends of the long-side heightening side plates B respectively, and the long-side heightening side plates A and the long-side heightening side plates B are hermetically connected to the tops and bottoms of the connecting plates 10 respectively. At this time, the bundled steel bar layer 22 of the sound-insulating concrete layer B5 is also located within the range surrounded by the long-side heightening side plates B and the wide-side heightening side plates;

[0054] 13) The connective bolts fixed to the steel bar layer 22 of the sound-insulating concrete layer B5 are lifted upward by a lifting tool, so that a prestress for downward restoring action is generated in the lower waveform structure of the corrugated plates, and the steel bar layer 22 of the sound-insulating concrete layer B5 is adjusted up and down along the connective bolts and then clamped and fixed by the nuts 24 located at the tops and bottoms of the steel bar layer 22 of the sound-insulating concrete layer B5;

[0055] 14) Pour the well-stirred base concrete onto the top of the sound-insulating concrete layer A4 in the rectangular groove casting mold, so that the top surface of the base concrete is horizontal, and the top surface of the base concrete is higher than the bottom of the nut 24 in contact with the bottom of the reinforcement layer 22 of the sound-insulating concrete layer B5 and lower than the top of the nut 24 in contact with the bottom of the reinforcement layer 22 of the sound-insulating concrete layer B5;

[0056] 15) After the base concrete solidifies, separate the connecting bolts fixed to the reinforcement layer 22 of the sound-insulating concrete layer B5 from the lifting device;

[0057] 16) Then fixedly connect a heightening side frame to the top of the long-side heightening side plate B and the top of the wide-side heightening side plate, and the heightening side frame is hermetically connected to the top of the long-side heightening side plate B and the top of the wide-side heightening side plate respectively;

[0058] 17) Pour the well-stirred sound-insulating concrete onto the top of the base concrete in the rectangular groove casting mold, so that the top surface of the sound-insulating concrete is horizontal and higher than the nut 24 fixed to the top of the reinforcement layer 22 of the sound-insulating concrete layer B5;

[0059] 18) Place a matching top plate mold in the heightening side frame. The top plate mold is provided with a plurality of mold holes matching the convex rods 8, and press down the top plate mold to make the sound-insulating concrete fill the mold holes.

[0060] The core plate 3 is a mesh plate uniformly distributed with a plurality of flow holes.

[0061] In step 7), after placing the reinforcement layer 22 of the sound-insulating concrete layer A4 fixed with the connecting bolts on the top surface of the sound-insulating concrete, lift and fix it with the top of the connecting bolts by the lifting device. After the sound-insulating concrete of the sound-insulating concrete layer A4 solidifies, separate the lifting device from the connecting bolts.

[0062] In step 14), the strength grade of the base concrete is greater than or equal to C25.

[0063] In step 15), at this time, the bottom surface of the top plate mold is still higher than the top surface of the nut 24 fixed to the top of the reinforcement layer 22 of the sound-insulating concrete layer B5.

[0064] Between the rectangular groove mold and the long-side heightening side plate A, between the rectangular groove mold and the wide-side heightening side plate, between the long-side heightening side plate A and the wide-side heightening side plate, between the long-side heightening side plate A and the connecting plate 10, between the long-side heightening side plate B and the connecting plate 10, between the wide-side heightening side plate and the long-side heightening side plate B, between the long-side heightening side plate B and the heightening side frame, between the wide-side heightening side plate and the heightening side frame, and between the heightening side frame and the top plate mold are respectively sealed by their corresponding sealing strips.

[0065] In the step 11), an annular flexible seal for sealing the spiral part 9 is provided on the inner wall of the connection hole.

[0066] A sound-insulating floor slab facilitating the laying of water and electricity lines and the installation of floor heating includes, from bottom to top, a precast floor slab layer, a water and electricity line laying layer 15, a heat insulation layer, a floor heating laying layer 20, and a surface decoration layer 21. The precast floor slab layer includes a plurality of precast floor slab bodies 1 fixedly connected to each other in sequence. The precast floor slab body 1 includes a concrete base layer 2. A sound-insulating concrete layer A4 is fixedly connected to the bottom of the concrete base layer 2. A sound-insulating concrete layer B5 is fixedly connected to the top of the concrete base layer 2. A core plate 3 is fixedly connected to the middle of the concrete base layer 2. The part of the core plate 3 corresponding to the concrete base layer 2 is a corrugated plate and is uniformly arranged along the width direction of the concrete base layer 2. Connecting rods A6 are symmetrically and fixedly connected to the outer sides of the side walls of the core plate 3 corresponding to the width direction of the concrete base layer 2 respectively. Connecting rods B7 are symmetrically and fixedly connected to the outer sides of the side walls of the core plate 3 corresponding to the length direction of the concrete base layer 2 respectively.

[0067] The connecting rods A6 are respectively arranged at the peak positions and valley positions of the corrugated plate.

[0068] The part of the connecting rod A6 extending out of the concrete base layer 2 is wound into a spiral part 9, and one end of the connecting rod A6 far from the concrete base layer 2 is wound to be parallel to the plate surface of the precast floor slab body 1.

[0069] A connecting plate 10 parallel to the plate surface of the precast floor slab body 1 is fixedly provided at the edge of the side wall of the core plate 3 corresponding to the length direction of the concrete base layer 2. The connecting plate 10 extends out of the side wall of the concrete base layer 2 in the length direction. The connecting rod B7 is fixedly connected to the outer edge of the side of the connecting plate 10 far from the concrete base layer 2.

[0070] The connecting rod B7 is provided with a strip-shaped through hole 11 along the length direction of the connecting rod B7.

[0071] A plurality of convex rods 8 are uniformly arranged on the top surface of the sound-insulating concrete layer B5.

[0072] A water and electricity pipe 14 is placed and fixed on the top surface of the sound-insulating concrete layer B5. The convex rod 8 corresponding to the position of the water and electricity pipe 14 on the top surface of the sound-insulating concrete layer B5 is removed to form a wiring groove 12. The water and electricity pipe 14 is fixed in the wiring groove 12, and then medium sand concrete or coarse sand concrete is poured and filled to form the water and electricity line laying layer 15.

[0073] The part of the core plate 3 corresponding to the inside of the concrete base layer 2 is a mesh plate uniformly distributed with a plurality of through holes.

[0074] A sound insulation concrete layer A4 and a sound insulation concrete layer B5 are respectively fixedly provided with a reinforcement layer 22 parallel to the plate surface of the precast floor slab body 1. The reinforcement layers 22 are respectively fixedly connected to the core plate 3 through a plurality of connecting vertical rods 23, and the connecting vertical rods 23 are perpendicular to the plate surface of the precast floor slab body 1.

[0075] The connecting vertical rod 23 fixed to the sound insulation concrete layer A4 is fixed at the wave crest position of the corrugated plate of the core plate 3, and the connecting vertical rod 23 fixed to the sound insulation concrete layer B5 is fixed at the wave trough position of the corrugated plate of the core plate 3.

[0076] The connecting vertical rod 23 is a connecting bolt, and the connecting bolt respectively fixes and connects the core plate 3 and the corresponding position of the reinforcement layer 22 through a nut 24.

[0077] Both ends of the precast floor slab body 1 are fixedly connected to the corresponding beam through a connecting rod A6. Both sides of the precast floor slab body 1 are fixedly connected to the corresponding connecting rod B7 of the adjacent precast floor slab body 1 on the corresponding side or fixedly connected to the corresponding beam on the corresponding side through a connecting rod B7.

[0078] The connecting rod A6 of the precast floor slab body 1 is fixed to the exposed reinforcement of the beam at the corresponding end, and the connecting rod B7 of the outermost precast floor slab body 1 facing the beam on the corresponding side is fixed to the exposed reinforcement of the beam on the corresponding side.

[0079] After the connecting rod B7 between two adjacent precast floor slab bodies 1 is simultaneously turned up or down, they are fixedly connected through a fixing bolt 13.

[0080] Both ends and both sides of the precast floor slab body 1 and the corresponding beam at the corresponding end, as well as between two adjacent precast floor slab bodies 1, are filled with coarse sand concrete to form a connection layer 16.

[0081] The heat insulation layer sequentially includes a cement fiber board 17 laid on the top surface of the water and electricity wiring layer 15 and a floor heating reflective film 19 fixed on the top surface of the cement fiber board 17 from bottom to top.

[0082] The length extension direction of the laid cement fiber board 17 is perpendicular to the length direction of the precast floor slab body 1.

[0083] The floor heating laying layer 20 described herein includes floor heating pipes 18 fixed on the top surface of the heat insulation layer and is filled with coarse sand concrete.

[0084] The surface decoration layer 21 is a laid floor or floor tile.

[0085] The construction method for building the floor slab facilitating water and electricity wiring and floor heating installation described above includes the following steps:

[0086] a) Fix the support members of the precast floor slab body 1 to be installed in advance below the position of the floor slab to be installed. Then, hoist the precast floor slab body 1 to the top of the floor in sequence by a lifting device, and fix it to the beam or the previously hoisted precast floor slab body 1 respectively through the connecting rod A6 and the connecting rod B7;

[0087] A protective cushion layer B is provided on the bottom surface of the sound insulation concrete layer A4 of the precast floor slab body 1 hoisted by the lifting device;

[0088] b) Then, chisel off the convex rods 8 corresponding to the positions where the water and electricity pipes 14 pass according to the wiring drawing of the water and electricity pipes on the floor where the precast floor slab body 1 is located, so as to form a wiring groove 12, and then carry out the wiring of the water and electricity pipes;

[0089] c) Pouring templates are respectively fixed at the bottom of the connection between adjacent precast floor slab bodies 1, at the bottom of the connection between the precast floor slab body 1 and the beam, and at the beam corresponding to the edge of the floor slab range formed by the hoisted precast floor slab bodies 1, and medium sand concrete or coarse sand concrete is poured successively or simultaneously for the connection layer 16 and the water and electricity wiring layer 15;

[0090] When both the connection layer 16 and the water and electricity wiring layer 15 are poured with coarse sand concrete, the connection layer 16 and the water and electricity wiring layer 15 are poured simultaneously; when the connection layer 16 is poured with coarse sand concrete and the water and electricity wiring layer 15 is poured with medium sand concrete, the connection layer 16 is poured first, and after the concrete of the connection layer 16 solidifies, the water and electricity wiring layer 15 is poured;

[0091] When the water and electricity wiring layer 15 is poured, the top surface of the concrete is scraped by a scraper to make the top surface of the entire floor slab in the same horizontal plane;

[0092] The top surface of the water and electricity wiring layer 15 is higher than the top surface of the convex rod 8 and higher than the top of the floor heating pipe 18;

[0093] d) After the connection layer 16 solidifies, immediately remove the pouring template corresponding to the connection layer 16 and remove the support members below the constructed floor slab;

[0094] After removing the pouring template corresponding to the connection layer 16 and the support members below the precast floor slab body 1 of the constructed floor slab, then remove the protective cushion layer B on the bottom surface of the sound insulation concrete layer A4 of the precast floor slab body 1 of the constructed floor slab, and construct the decorative layer of the wall and the decorative layer of the ceiling inside the building below the constructed floor slab;

[0095] After the concrete of the water and electricity wiring layer 15 solidifies, remove each pouring template in step c), and then lay and fix the cement fiber board 17 on the top of the water and electricity wiring layer 15 in sequence;

[0096] Between the cement fiber board 17 and the layer for laying water and electricity lines 15, and between adjacent cement fiber boards 17, they are fixedly connected by cement mortar;

[0097] After the cement fiber board 17 is laid, the top surface of the cement fiber board 17 is leveled by self-leveling of horizontal mortar;

[0098] e) After the cement fiber board 17 is fixed, then lay and fix the floor heating reflective film 19 on the top surface of the cement fiber board 17;

[0099] f) Lay the connected floor heating pipes 18 in sequence on the top surface of the floor heating reflective film 19, and pour coarse sand concrete to form the floor heating laying layer 20;

[0100] When the floor heating laying layer 20 is poured, the top surface of the concrete is scraped by a scraper to make the entire top surface of the floor slab in the same horizontal plane;

[0101] g) After the concrete of the floor heating laying layer 20 solidifies, then construct the surface decoration layer 21 on the top surface of the floor heating laying layer 20, thereby completing the installation of this layer of floor slab;

[0102] The surface decoration layer 21 is any one or more of the laid floor tiles, floors or stone slabs, or the surface decoration layer 21 is a terrazzo layer or a floor cushion layer;

[0103] h) Lay the protective cushion layer A on the top surface of the surface decoration layer 21, and repeat the above steps on the floor slab where the protective cushion layer A is laid to carry out the construction of the upper layer of floor slab; After the construction of the columns, beams, walls of the floor where this layer of floor slab is located, the upper layer of floor slab of this layer of floor slab, and the decorative layers of the walls and the decorative layer of the ceiling in the building corresponding to this layer of floor slab are all completed, then remove the protective cushion layer A on the top surface of this layer of floor slab.

[0104] The mixing ratio of the sound insulation concrete adopts the mixing ratio disclosed in the patent with the application number 202011348921.9.

[0105] By respectively arranging the sound insulation concrete layer A and the sound insulation concrete layer B at the bottom and the top of the concrete base layer, effective sound insulation can be achieved. Moreover, the material of the sound insulation concrete layer is sound insulation concrete, so that the connection strength with the concrete base layer can be ensured, effectively avoiding falling off or separation. Moreover, the strength of the sound insulation concrete is also sufficient for the connection strength with other media during subsequent decoration construction.

[0106] Through the corrugated plate structure of the core plate, not only can the core plate have good compressive and tensile properties for the concrete base layer in the up and down directions and the waveform distribution direction of the corrugated plate, but also the connecting rod A can form two upper and lower rows corresponding to the positions of the wave crests and wave troughs, thereby improving the connection strength between the two ends of the floor slab body and the beam.

[0107] The spiral part formed by the connecting rod A can not only effectively increase the contact area between the connecting rod and the concrete of the connecting layer, improving the strength of the concrete in the connecting layer, but also the spiral structure of the spiral part facilitates axial tension and contraction, so that it can be adjusted according to the distance between the floor slab body and the beam during actual assembly.

[0108] Through the convex rods provided on the top of the sound insulation concrete layer B, it is not only convenient for the floor slab to remove the corresponding convex rods according to the water and electricity pipeline wiring diagram during construction to form a wiring groove and facilitate prefabricated water and electricity pipelines in the floor slab, but also can further increase the height of the sound insulation concrete layer, further improving the sound insulation effect of the floor slab.

[0109] Since the core plate is a mesh plate structure, it not only effectively reduces the weight of the core plate and the floor slab, but also facilitates the pouring of the concrete base layer, thus reducing the production cost; moreover, it can also make the connection effect between the core plate and the base concrete of the concrete base layer better, thereby ensuring the strength of the concrete base layer.

[0110] The core plate is connected and fixed to the steel bar layer in the sound insulation concrete layer through the connecting vertical rods, thereby further increasing the connection strength between the concrete base layer and the sound insulation concrete layer.

[0111] The wave crest position of the corrugated plate of the core plate is connected to the steel bar layer of the sound insulation concrete layer A through the connecting vertical rods, and the wave trough position of the corrugated plate of the core plate is connected to the steel bar layer of the sound insulation concrete layer B through the connecting vertical rods, so that internal stress can also be generated in the corrugated plate, and thus the compressive, bending and flexural properties of the concrete base layer are greatly improved.

[0112] The sound insulation concrete layer A, the concrete base layer and the sound insulation concrete layer B are poured in sequence from bottom to top. During the production and construction process of the sound insulation floor slab body, no additional turnover is required. Only by continuously adding and heightening the side plates, side frames and top plate molds above the pouring mold can the production efficiency be improved, and losses during turnover can also be avoided.

[0113] The connecting vertical rods are bolts, which not only facilitate the connection and fixation between the corrugated plate and the steel bar layer, but also can adjust the height between the steel bar layer and the corrugated plate according to the sound insulation floor slabs with different performance and size requirements, thus improving the production efficiency and applicability.

[0114] Through the function of the top plate mold, the sound insulation concrete layer B can be quickly prepared, improving the production efficiency, and the top surface of the produced sound insulation concrete layer B is horizontal, the convex rods on the top surface of the sound insulation concrete layer B are evenly distributed, and the tops of the convex rods are also flush.

[0115] The floor slab structure, from bottom to top, is successively composed of a sound-insulating concrete layer A of the precast floor slab body, a concrete base layer, a sound-insulating concrete layer B, a water and electricity wiring layer, a heat-insulating layer, a floor heating laying layer, and a surface decoration layer. The formed two-layer sound-insulating layer can not only sound-insulate the sound in the room below the floor slab, but also sound-insulate the sound in the room above the floor slab. Moreover, during the construction of the floor slab, the construction party can directly embed the pipelines in the floor slab according to the unified pipelines, and directly and uniformly lay the floor heating water pipes according to the construction requirements, ensuring the quality of the floor heating pipelines and the consistency of the heating efficiency of the floor heating pipelines.

[0116] After folding the connecting rod B, it is connected to the adjacent precast floor slab body or beam through a fixing bolt. This not only facilitates the connection, but also can adjust the distance between adjacent precast floor slab bodies or the distance between the precast floor slab body and the beam by screwing the fixing bolt, so as to ensure the uniform distribution of the precast floor slab bodies on this floor, and further ensure that the strength performance at each position of the floor slab of the floor meets the requirements and the strength performance distribution is uniform.

[0117] Through the structural setting of the heat-insulating layer, it is ensured that the heat of the floor heating will not conduct heat downward to the floor slab, improving the heating effect of the floor heating.

[0118] The surface decoration layer is directly set above the floor heating laying layer, thereby reducing the loss of the heat of the floor heating, and the heat generated by the floor heating can be quickly radiated from the surface.

[0119] It can be quickly assembled and constructed at the construction site, and the pipelines can be directly embedded in the floor slab according to the water and electricity pipelines, and the floor heating can be laid, thereby improving the production efficiency and shortening the production cycle; moreover, the top surface of the floor slab is directly constructed to the surface decoration surface, so that when the subsequent owners decorate, there is no need to transform the ground and no need to damage the ground, shortening the decoration cycle.

[0120] When the water and electricity wiring layer is poured, the top surface of the concrete is scraped by a scraper to make the entire top surface of the floor slab in the same horizontal plane, so as to facilitate the smooth laying of the subsequent cement fiber board.

[0121] Both between the cement fiber board and the water and electricity wiring layer and between adjacent cement fiber boards are fixedly connected through cement mortar, thereby ensuring the connection strength between the cement fiber board and the water and electricity wiring layer.

[0122] After the cement fiber board is laid, the top surface of the cement fiber board is leveled by self-leveling of the horizontal mortar, so as to ensure that the laid floor heating reflective film is horizontal and the top surface of the cement fiber board on which the floor heating reflective film is laid is also absolutely flat, ensuring the heat reflection effect of the floor heating reflective film, and further ensuring the heating effect of the floor heating.

[0123] Through the setting of the protective cushion layer A and the protective cushion layer B, the top surface and the bottom surface of the completed floor slab are well protected, avoiding damage to the top surface or the bottom surface of the floor slab during the subsequent construction.

Claims

1. A prefabricated sound-insulating floor structure, characterized in that: It includes a precast floor slab body (1). The precast floor slab body (1) includes a concrete base layer (2). A sound insulation concrete layer A (4) is fixedly connected to the bottom of the concrete base layer (2). A sound insulation concrete layer B (5) is fixedly connected to the top of the concrete base layer (2). A core plate (3) is fixedly connected to the middle of the concrete base layer (2). The part of the core plate (3) corresponding to the concrete base layer (2) is a corrugated plate and is uniformly arranged in sequence along the width direction of the concrete base layer (2). On the outer sides of the side walls of the core plate (3) corresponding to the width direction of the concrete base layer (2), connecting rods A (6) are symmetrically and fixedly connected respectively. On the outer sides of the side walls of the core plate (3) corresponding to the length direction of the concrete base layer (2), connecting rods B (7) are symmetrically and fixedly connected respectively; the connecting rods A (6) are respectively arranged at the peak positions and trough positions of the corrugated plate; the part of the connecting rod A (6) extending out of the concrete base layer (2) is wound into a spiral part (9), and one end of the connecting rod A (6) far from the concrete base layer (2) is wound to be parallel to the plate surface of the precast floor slab body (1). A plurality of convex rods (8) are uniformly arranged on the top surface of the sound insulation concrete layer B (5). Reinforcement layers (22) parallel to the plate surface of the precast floor slab body (1) are respectively fixedly arranged in the sound insulation concrete layer A (4) and the sound insulation concrete layer B (5). The reinforcement layers (22) are respectively fixedly connected to the core plate (3) through a plurality of connecting vertical rods (23). The connecting vertical rods (23) are perpendicular to the plate surface of the precast floor slab body (1); the connecting vertical rods (23) fixed to the sound insulation concrete layer A (4) are fixed at the peak positions of the corrugated plate of the core plate (3), and the connecting vertical rods (23) fixed to the sound insulation concrete layer B (5) are fixed at the trough positions of the corrugated plate of the core plate (3); the connecting vertical rods (23) are connecting bolts, and the connecting bolts respectively fix the core plate (3) and the corresponding positions of the reinforcement layer (22) through nuts (24).

2. The prefabricated sound-insulating floor slab structure according to claim 1, characterized in that: On the edge of the side wall of the core plate (3) corresponding to the length direction of the concrete base layer (2), a connecting plate (10) parallel to the plate surface of the precast floor slab body (1) is fixedly arranged. The connecting plate (10) extends out of the side wall of the concrete base layer (2) in the length direction. The connecting rod B (7) is fixedly connected to the outer side edge of the connecting plate (10) far from the concrete base layer (2).

3. The prefabricated sound-insulating floor structure according to claim 1, wherein: The connecting rod B (7) is provided with a strip-shaped through hole (11) along the length direction of the connecting rod B (7).

4. The prefabricated sound-insulating floor structure according to claim 1, characterized in that: The part of the core plate (3) corresponding to the inside of the concrete base layer (2) is a mesh plate uniformly distributed with a plurality of through holes.

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