Large-area carborundum floor structure and construction method

Abstract

The invention provides a large-area carborundum floor structure and a construction method. The floor structure sequentially comprises a cushion layer, a structural layer and a surface layer from bottom to top. And a pipe ditch is arranged between two adjacent terrace subareas. The structural layer comprises structural layer steel bars. And the surface layer comprises surface layer steel bars. The pipe ditch comprises a pipe ditch upper reinforcing steel bar, a pipe ditch lower reinforcing steel bar and pipe ditch Z-shaped profile steel. The pipe ditch lower steel bars and the structural layer steel bars are connected into a whole, and the pipe ditch upper steel bars and the surface layer steel bars are connected into a whole. And the pipe ditch Z-shaped profile steel is mounted at the top of the pipe ditch upper reinforcing steel bar. The problems that the emery terrace is uneven in ground and prone to cracking after being heavily pressed can be solved, and the purpose of improving the overall flatness, the bearing capacity and the anti-cracking capacity of the terrace is achieved.

Description

Technical Field

[0001] The invention relates to the technical field of building construction, and in particular to a large-area diamond sand floor structure and a construction method. Background Art

[0002] Emery wear-resistant hardened ground, commonly known as emery wear-resistant floor, emery is composed of mineral alloy aggregates with a certain particle size distribution, special cement, other admixtures and additives, and can be used after opening the bag. It is evenly spread on the surface of concrete that is about to set, and processed by special means to form a whole with the concrete floor. Emery floor has the advantages of wear resistance, pressure resistance, dust reduction, hard surface, easy cleaning, economical and durable.

[0003] As the functional requirements of large public buildings such as modern exhibition centers and theaters become increasingly complex, their diamond abrasive floor projects need to integrate a large number of power, communication and fire protection pipeline systems. In order to meet the needs of equipment routing, multiple longitudinal or transverse pipe trenches are usually preset in the floor structure to form a grid pipeline channel. However, the existing diamond abrasive floor construction process has exposed a number of technical bottlenecks when dealing with the integrated molding of pipe trenches and floors, which directly affects the quality and service life of floor projects, specifically in the following aspects:

[0004] 1. Uneven ground: The traditional method is to make the whole ground first, and then cut or pour the pipe trench for the second time. Due to the time difference between the two constructions, the pipe trench and the surrounding ground are prone to unevenness (visible seams). Especially when the pipe trench is wide, the edge is prone to collapse or warp, resulting in obvious defects in the later ground coating. At the same time, the floor area of ​​this type of large public building is large, how to ensure the overall flatness of the diamond sand floor and how to ensure the flatness of the junction between the pipe trench and the floor are problems that need to be solved.

[0005] 2. Easy to crack after heavy pressure: These places often have heavy equipment rolling on the ground, so there are high requirements for the bearing capacity and crack resistance of the diamond abrasive floor. The junction between the trench and the floor is a weak point. After long-term pressure, radial cracks will appear (especially at the corners of the trench), and in severe cases, the surrounding ground will be damaged. The metal frame around the trench cover is not tightly combined with the concrete. The vibration when the vehicle passes by will gradually loosen these areas, eventually causing a circle of cracks around the cover. Summary of the invention

[0006] In view of the above problems, the present invention is proposed to provide a large-area corundum floor structure and construction method that overcomes the above problems or at least partially solves the above problems, which can solve the problems of uneven surface of corundum floor and easy cracking after heavy pressure, and achieve the purpose of improving the overall flatness, bearing capacity and crack resistance of the floor.

[0007] Specifically, the present invention provides a large-area diamond abrasive floor structure, the floor structure includes a floor, multiple pipe trenches and multiple compartment seams; the multiple pipe trenches divide the floor into multiple floor areas; the multiple compartment seams are horizontally arranged in the floor area, and the multiple floor areas are divided into multiple floor partitions; the floor partitions include a cushion layer, a structural layer and a surface layer from bottom to top; there is a pipe trench between two adjacent floor partitions; the structural layer includes structural layer steel bars; the surface layer includes surface layer steel bars; the pipe trench includes upper steel bars of the pipe trench, lower steel bars of the pipe trench and "Z"-shaped steel bars of the pipe trench; the lower steel bars of the pipe trench are connected to the structural layer steel bars to form a whole, and the upper steel bars of the pipe trench are connected to the surface layer steel bars to form a whole; the "Z"-shaped steel of the pipe trench is installed on the top of the upper steel bars of the pipe trench.

[0008] Optionally, the trench also includes multiple adjustment devices; the multiple adjustment devices are used to adjust the elevation of the trench "Z"-shaped steel and to fix the trench "Z"-shaped steel to the trench steel bars; an adjustment device includes a sleeve and a connecting rod; the sleeve is connected to the trench steel bars; multiple first barbs are symmetrically arranged in the sleeve; multiple second barbs are symmetrically arranged at one end of the connecting rod; a spring member is connected between the multiple second barbs and the connecting rod; the other end of the connecting rod is connected to the trench "Z"-shaped steel; the multiple second barbs have expanded and retracted states; the multiple first barbs are meshed with the multiple second barbs.

[0009] Optionally, the trench also includes multiple supporting devices; the multiple supporting devices are horizontally installed on the "Z"-shaped steel of the trench on both sides of the top of the trench, and are used to prevent the "Z"-shaped steel of the trench from moving when pouring concrete on the surface layer; a supporting device includes two fixing blocks, a connecting piece, two screws and two nuts; the two screws are vertically arranged and symmetrically installed in the trench; the connecting piece is "L"-shaped and horizontally arranged on the "Z"-shaped steel of the trench on both sides of the upper end of the trench; the two fixing blocks are installed at the bottom of both ends of the connecting piece; two through holes are opened on the connecting piece; the two screws pass through the two through holes respectively, and the two screws are connected to the connecting piece by two nuts.

[0010] Specifically, the present invention provides a construction method of a floor structure as claimed in claim 1, characterized in that it comprises the following steps:

[0011] S1: Apply concrete cushion;

[0012] S2: Lay out the pipe trench and compartment seam positions, and divide the floor into multiple floor zones;

[0013] S3: Tie up the floor partition structure layer, the upper reinforcement of the trench and the lower reinforcement of the trench, and pour the concrete of the structure layer and the reinforcement area of ​​the trench;

[0014] S4: Install the “Z”-shaped steel on the top of the steel bars in the trench and install the compartment joints on the top of the structural layer and level them;

[0015] S5: Tie the surface layer steel bars, connect the surface layer steel bars with the upper steel bars of the trench on both sides of the surface layer and the compartment seams to form a whole, pour concrete in the surface layer and the upper steel bar area of ​​the trench, and use a laser leveling machine to level the concrete;

[0016] S6: After the surface concrete has initially set, diamond sand is spread twice, and the surface is polished and finished with a grinder in turn;

[0017] S7: Maintenance of cutting seams;

[0018] S8: Spray the curing agent. After the curing agent is absorbed and penetrated, grind the ground three times. Finally, clean the ground to complete the diamond abrasive floor construction.

[0019] Optionally, in steps S4 and S5, the top surface of the surface layer is flush with the top surface of the "Z"-shaped steel of the trench and the compartment seam.

[0020] Optionally, step S5 specifically includes: applying epoxy interface agent on the interface between the Z-shaped steel and the compartment joints of the pipe trench and the surface concrete to enhance the bonding strength between the Z-shaped steel and the compartment joints of the pipe trench and the concrete; and leveling the concrete at the interface between the Z-shaped steel and the surface layer using a vibrating beam.

[0021] Optionally, in step S6, the corundum is spread twice, specifically including: both times the corundum is spread in a single direction, and the two spreading directions are different; 60% of the corundum with a particle size of 1mm-2mm is spread for the first time, and 40% of the corundum with a particle size of 0.5mm-1mm is spread for the second time; the corundum is spread by a spreader, and the spreader has spreading and leveling functions.

[0022] Optionally, in step S7, the cutting is cutting deformation joints; the deformation joints are filled with elastic sealant after cutting; and the deformation joints and compartment joints are arranged alternately.

[0023] Optionally, before step S6, the method further includes: after the surface concrete is initially set, a trowel is used to grind and raise the slurry, and the surface of the surface is leveled with a 3-meter ruler.

[0024] In a large-area diamond abrasive floor structure of the present invention, the surface layer steel bars in the floor partition surface layer are respectively connected to the upper steel bars of the pipe trench and the compartment seams to form a whole. The pipe trench "Z"-shaped steel is installed on the top of the upper steel bars of the pipe trench. The pipe trench "Z"-shaped steel is adjusted in elevation by an adjustment device and fixed by multiple support devices. The top surface of the surface layer concrete is level with the pipe trench "Z"-shaped steel and the compartment seams. The flatness of the pipe trench and the floor partition surface layer is guaranteed, thereby greatly improving the overall flatness of the floor.

[0025] Furthermore, in a large-area diamond sand floor construction structure of the present invention, the steel bars at the bottom of the pipe trench are connected to the steel bars of the structural layer to form a whole, and the steel bars at the top of the pipe trench are connected to the steel bars of the surface layer and the compartment seams to form a whole, so that the structural strength is effectively improved, and the bearing capacity of the diamond sand floor is improved. The "Z"-shaped steel of the pipe trench and the compartment seams form a square floor partition, and the "Z"-shaped steel of the pipe trench and the compartment seams are located around the square floor partition, which plays a "sealing edge" role for the square floor partition, ensuring that the floor partition, the pipe trench and the compartment seams will not crack after being subjected to heavy pressure at the junction.

[0026] Furthermore, in a large-area corundum floor construction method of the present invention, the elevation of the "Z"-shaped steel and compartment joints of the pipe trench in the area is adjusted accordingly according to different floor partitions, and the elevation of the top of the surface concrete is adjusted by the "Z"-shaped steel and compartment joints of the pipe trench, so as to further ensure the flatness of the surface of the floor partition. After the surface concrete is initially set, corundum is spread twice, and both times the corundum is spread in a single direction, and the two spreading directions are different, and the grinding machine is used to grind and finish the surface in turn. The flatness and quality of the corundum floor constructed according to this method are guaranteed. The epoxy interface agent is brushed at the junction of the "Z"-shaped steel and compartment joints of the pipe trench and the surface concrete, which greatly improves the bearing capacity and crack resistance of the floor surface layer, and at the same time can greatly avoid the problem of cracking at the junction of the pipe trench and the floor surface layer (the "Z"-shaped steel of the pipe trench) under heavy pressure.

[0027] Based on the following detailed description of specific embodiments of the present invention in conjunction with the accompanying drawings, those skilled in the art will become more aware of the above and other objects, advantages and features of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Hereinafter, some specific embodiments of the present invention will be described in detail in an exemplary and non-limiting manner with reference to the accompanying drawings. The same reference numerals in the accompanying drawings indicate the same or similar components or parts. It should be understood by those skilled in the art that these drawings are not necessarily drawn to scale. In the accompanying drawings:

[0029] Figure 1 This is a floor plan of a large-area diamond floor structure according to an embodiment of the present invention;

[0030] Figure 2 yes Figure 1 Sectional view at AA in the middle;

[0031] Figure 3 This is a schematic diagram of a pipe trench structure of a large-area diamond sand floor structure according to an embodiment of the present invention;

[0032] Figure 4 It is a schematic diagram of compartment seams of a large-area diamond abrasive floor structure according to an embodiment of the present invention;

[0033] Figure 5 yes Figure 3 A partial enlarged view of point B in the middle;

[0034] Figure 6 It is a side view of a supporting device for a large-area diamond floor structure according to an embodiment of the present invention;

[0035] Figure 7 The present invention is a flowchart of a large-area diamond abrasive floor construction method according to an embodiment of the present invention.

[0036] In the figure: 1. trench; 101. Z-shaped steel of trench; 102. upper steel bars of trench; 103. lower steel bars of trench; 2. floor area; 3. compartment seams; 4. floor partitions; 41. cushion layer; 42. structural layer; 43. surface layer; 431. surface layer steel bars; 5. adjusting device; 501. sleeve; 502. first barb; 503. connecting rod; 504. second barb; 505. spring member; 6. supporting device; 601. connecting member; 602. fixing block; 603. screw rod; 604. nut. DETAILED DESCRIPTION

[0037] Refer to the following Figures 1 to 6 To describe a large-area diamond abrasive floor structure and construction method of an embodiment of the present invention. In the description of this embodiment, it should be understood that the terms "first" and "second" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features, that is, include one or more of the features. In the description of the present invention, the meaning of "multiple" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined. When a feature "includes or contains" one or some of the features it covers, unless otherwise specifically described, this indicates that other features are not excluded and may further include other features.

[0038] In addition, in the description of this embodiment, the first feature being "above" or "below" the second feature may include the first and second features being in direct contact, or may include the first and second features not being in direct contact but being in contact through another feature between them. That is, in the description of this embodiment, the first feature being "above", "above", and "above" the second feature includes the first feature being directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. The first feature being "below", "below", or "below" the second feature may mean that the first feature is directly below or obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0039] In the description of the present embodiment, the description with reference to the terms "one embodiment", "some embodiments", "illustrative embodiments", "examples", "specific examples", or "some examples" means that the specific features, structures, materials, or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described may be combined in any one or more embodiments or examples in a suitable manner.

[0040] Figure 1 : is a floor plan of a large-area diamond floor structure according to an embodiment of the present invention, such as Figure 1 As shown, and refer to Figure 2 The embodiment of the present invention provides a large-area diamond floor structure, which includes a floor, multiple pipe trenches 1 and multiple compartment seams 3. The multiple pipe trenches 1 divide the floor into multiple floor areas 2. Every two compartment seams 3 are horizontally arranged in one floor area 2, and the multiple floor areas 2 are divided into three floor partitions 4. Each floor partition 4 includes a cushion layer 41, a structural layer 42 and a surface layer 43 from bottom to top. There is a pipe trench 1 between two adjacent floor partitions 4.

[0041] like Figures 1 to 4 As shown, the cushion layer 41 is a 100mm thick C15 concrete cushion layer 41. The structural layer 42 is a 230mm thick C30 reinforced concrete, with cold-rolled ribbed welded steel mesh R8@200 bidirectional double-layer structural layer 42 steel bars, and the structural layer 42 steel bars are not shown in the figure. The surface layer 43 includes surface layer steel bars 431, and the surface layer steel bars 431 mesh is Φ8@150mm. The trench 1 includes upper steel bars 102 of the trench 1, lower steel bars 103 of the trench 1, and trench "Z" shaped steel 101. The lower steel bars 103 of the trench 1 are connected to the structural layer 42 steel bars to form a whole, and the upper steel bars 102 of the trench 1 are connected to the surface layer steel bars 431 to form a whole. The trench "Z" shaped steel 101 is installed on the top of the upper steel bars 102 of the trench 1. The compartment seam 3 is in the shape of "┐┌", and the bottom is connected, as shown in FIG. Figure 4 As shown. The lower steel bars 103 of the trench 1 are connected to the steel bars of the structural layer 42 to form a whole, and the upper steel bars 102 of the trench 1 are connected to the surface steel bars 431 to form a whole, and the structural strength is effectively improved, thereby improving the bearing capacity of the diamond floor. The trench "Z"-shaped steel 101 and the compartment seam 3 form a square floor partition 4, and the trench "Z"-shaped steel 101 and the compartment seam 3 are located around the square floor partition 4, which plays a "sealing" role for the square floor partition 4, solving the problem that the floor partition 4 is prone to cracking at the junction with the trench 1 and the compartment seam 3 after being subjected to heavy pressure.

[0042] In some embodiments of the present invention, Figure 3 and Figure 5As shown, the pipe trench 1 also includes a plurality of adjustment devices 5, which are used to adjust the elevation of the pipe trench "Z" shaped steel 101 and to fix the pipe trench "Z" shaped steel 101 to the upper steel bar 102 of the pipe trench. An adjustment device 5 includes a sleeve 501 and a connecting rod 503, and the sleeve 501 and the connecting rod 503 are arranged vertically. The bottom of the sleeve 501 is connected to the upper steel bar 102 of the pipe trench. A plurality of first barbs 502 are symmetrically arranged in the sleeve 501. A plurality of second barbs 504 are symmetrically arranged at the bottom end of the connecting rod 503 (one end inserted into the sleeve 501). The plurality of second barbs 504 are rotatably connected to the connecting rod 503, and a spring member 505 is connected between the plurality of second barbs 504 and the connecting rod 503. The other end of the connecting rod 503 is connected to the pipe trench "Z" shaped steel 101. The plurality of second barbs 504 have an expanded and retracted state. When the plurality of second barbs 504 are in the unfolded state, the plurality of first barbs 502 are meshed with the plurality of second barbs 504; the connecting rod 503 is inserted downward into the sleeve 501, and the plurality of second barbs 504 are retracted to adjust the length of the connecting rod 503 in the sleeve 501. The other end of the connecting rod 503 is connected to the Z-shaped steel 101 of the pipe trench.

[0043] In some embodiments of the present invention, Figure 3 and Figure 6 As shown, the pipe trench 1 also includes a plurality of supporting devices 6. The plurality of supporting devices 6 are horizontally mounted on the pipe trench "Z" shaped steel 101 on both sides of the top of the pipe trench 1, and are used to prevent the pipe trench "Z" shaped steel 101 from moving when the surface layer 43 is poured with concrete. A supporting device 6 includes two fixing blocks 602, a connecting piece 601, two screws 603 and two nuts 604. The two screws 603 are vertically arranged and symmetrically installed in the pipe trench 1. The connecting piece 601 is "L" shaped and is horizontally arranged on the pipe trench "Z" shaped steel 101 on both sides of the upper end of the pipe trench 1. The two fixing blocks 602 are installed at the bottom of both ends of the connecting piece 601, and are used to fix the pipe trench "Z" shaped steel 101. The connecting piece 601 has two through holes, and the two screws 603 pass through the two through holes respectively, and the two screws 603 are connected to the connecting piece 601 by two nuts 604, and the through holes are not shown in the figure.

[0044] In some embodiments of the present invention, Figure 7 As shown, the diamond abrasive floor construction method includes the following steps:

[0045] S1: Apply concrete cushion layer 41;

[0046] S2: Lay out and locate the pipe trench 1 and the compartment seam 3, and divide the floor into multiple floor partitions 4;

[0047] S3: Tie up the structural layer 42 of the floor partition 4, the upper steel bars 102 of the pipe trench and the lower steel bars 103 of the pipe trench, and pour concrete in the area of ​​the structural layer 42 and the lower steel bars 103 of the pipe trench;

[0048] S4: Install the trench "Z"-shaped steel 101 on the top of the steel bars 102 at the top of the trench and install the compartment seam 3 on the top of the structural layer 42 and level them;

[0049] S5: Tie the surface layer steel bars 431, connect the surface layer steel bars 431 with the upper steel bars 102 of the pipe trench on both sides of the surface layer 43 and the compartment seams 3 to form a whole, pour concrete in the area of ​​the surface layer 43 and the upper steel bars 102 of the pipe trench, and use a laser leveling machine to level the concrete;

[0050] S6: After the initial setting of the surface layer 43 concrete, diamond sand is spread twice, and the surface is polished and finished with a grinder in turn;

[0051] S7: Maintenance of cutting seams;

[0052] S8: Spray the curing agent. After the curing agent is absorbed and penetrated, grind the ground three times. Finally, clean the ground to complete the diamond abrasive floor construction.

[0053] In step S2, a total station is used to lay out and locate the positions of multiple pipe trenches 1 and multiple partition joints 3. The multiple pipe trenches 1 divide the floor into three large floor areas 2, and a large floor area 2 is divided into three small floor partitions 4 (the area of ​​a single square partition is ≤800 m2) by two partition joints 3.

[0054] In step S3, the steel bars of the structural layer 42 of the floor partition 4, the upper steel bars 102 of the pipe trench 1, and the lower steel bars 103 of the pipe trench 1 are tied in sequence, and the lower steel bars 103 of the pipe trench 1 are tied and connected with the steel bars of the structural layer 42 to form a whole. After the steel bars are tied, the concrete of the lower steel bars 103 of the pipe trench 1 and the steel bars of the structural layer 42 is poured. The concrete is poured in layers using C30 commercial concrete, and the inserted vibrator is vibrated and compacted, and the surface elevation error of the structural layer 42 is controlled within ±5mm.

[0055] In step S4, the trench "Z" shaped steel 101 is installed on the top of the upper steel bars 102 of the trench 1 and the compartment seam 3 is installed and leveled on the top of the structural layer 42. The trench "Z" shaped steel 101 is adjusted in elevation by the adjustment device 5 and fixedly connected to the trench 1 steel bars. After the trench "Z" shaped steel 101 is leveled, the top surface is flush with the top surface of the prefabricated compartment seam 3. After the elevation adjustment of the trench "Z" shaped steel 101 is completed, a plurality of support devices 6 are installed thereon, with one support device 6 every 3m, to prevent the trench "Z" shaped steel 101 from moving when pouring the surface layer 43 concrete. The Z-shaped steel 101 of the trench is adjusted in elevation by an adjusting device 5 and fixed by a plurality of supporting devices 6, so that its top surface can be flush with the floor surface layer 43 and the top surface of the prefabricated compartment seam 3. When the top surface of the floor surface layer 43 is polished and leveled, it plays an auxiliary leveling role, ensuring the flatness of the partitions of the floor surface layer 43, thereby improving the overall flatness of the diamond abrasive floor.

[0056] In step S5, the surface layer steel bars 431 of the floor partition 4 are tied, and the surface layer steel bars 431 are connected to the upper steel bars 102 of the pipe trench 1 and the compartment seams 3 on both sides of the surface layer 43 to form a whole, and epoxy interface agent is brushed at the junction of the pipe trench "Z" shaped steel 101 and the compartment seams 3 with the concrete of the surface layer 43 to enhance the bonding force between the pipe trench "Z" shaped steel 101 and the compartment seams 3 and the concrete. After the surface layer steel bars 431 are tied, the concrete in the surface layer 43 and the upper steel bars 102 area of ​​the pipe trench 1 is poured, and the concrete is leveled with a laser leveling machine, and the concrete at the junction of the pipe trench "Z" shaped steel 101 and the compartment seams 3 with the surface layer 43 is leveled with a vibration beam.

[0057] The pipe trench "Z" shaped steel 101 is connected to the pipe trench 1 steel bars, the pipe trench 1 steel bars are connected to the floor surface steel bars 431, the floor steel bars are anchored to the prefabricated compartment seams 3, and the epoxy interface agent is applied at the junction of the pipe trench "Z" shaped steel 101 and the compartment seams 3 with the concrete of the surface layer 43, which greatly improves the bearing capacity and crack resistance of the floor surface layer 43, and at the same time can greatly avoid the problem of cracking at the junction of the pipe trench 1 and the floor surface layer 43 (the pipe trench "Z" shaped steel 101) under heavy pressure.

[0058] Before step S6, the method further includes: after the initial setting of the concrete of the surface layer 43, a trowel is used to polish and raise the slurry, and a 3-meter ruler is used to level the surface of the surface layer 43.

[0059] In step S6, the corundum is spread twice, specifically including: the corundum is spread in a single direction twice, and the two spreading directions are different. The first time, 60% corundum with a particle size of 1-2 mm is spread, and the second time, 40% corundum with a particle size of 0.5-1 mm is spread. The corundum is spread by a spreader, and the spreader has the functions of spreading and leveling. The junction between the "Z"-shaped steel 101 of the trench and the compartment seam 3 and the surface layer 43 is manually leveled and polished.

[0060] In step S7, the geotextile is covered and wet-cured for 7 days, and watering is performed at least 4 times a day. After curing, the seams are cut, and the cut seams are deformation seams. After the deformation seams are cut, elastic sealant is filled. The deformation seams and the compartment seams 33 are arranged alternately.

[0061] At this point, those skilled in the art should recognize that, although multiple exemplary embodiments of the present invention have been shown and described in detail herein, many other variations or modifications that conform to the principles of the present invention can still be directly determined or derived based on the content disclosed in the present invention without departing from the spirit and scope of the present invention. Therefore, the scope of the present invention should be understood and recognized as covering all these other variations or modifications.

Claims

1. A large-area diamond sand floor structure, characterized in that: It includes a floor, a plurality of pipe trenches and a plurality of compartment seams; the plurality of pipe trenches divide the floor into a plurality of floor areas; the plurality of compartment seams are horizontally arranged in the floor area, and divide the plurality of floor areas into a plurality of floor partitions; The floor partitions include a cushion layer, a structural layer and a surface layer from bottom to top; the trench is located between two adjacent floor partitions; the structural layer includes structural layer steel bars; the surface layer includes surface layer steel bars; the trench includes upper trench steel bars, lower trench steel bars and trench "Z"-shaped steel bars; the lower trench steel bars are connected to the structural layer steel bars to form a whole, and the upper trench steel bars are connected to the surface layer steel bars to form a whole; the trench "Z"-shaped steel bars are installed on top of the upper trench steel bars.

2. A large-area diamond sand floor structure according to claim 1, characterized in that: The pipe trench also includes a plurality of adjusting devices; the plurality of adjusting devices are used to adjust the elevation of the pipe trench "Z" shaped steel, and to fix the pipe trench "Z" shaped steel to the pipe trench steel bar; The adjusting device comprises a sleeve and a connecting rod; the sleeve is connected to the pipe trench steel bar; a plurality of first barbs are symmetrically arranged in the sleeve; a plurality of second barbs are symmetrically arranged at one end of the connecting rod; a spring member is connected between the plurality of second barbs and the connecting rod; the other end of the connecting rod is connected to the "Z"-shaped steel of the pipe trench; a plurality of the second barbs have expanded and retracted states; a plurality of the first barbs are meshed with a plurality of the second barbs.

3. A large-area diamond sand floor structure according to claim 1, characterized in that: The pipe trench also includes a plurality of supporting devices; the plurality of supporting devices are horizontally mounted on the pipe trench "Z" shaped steel on both sides of the top of the pipe trench, and are used to prevent the pipe trench "Z" shaped steel from moving when the surface layer is poured with concrete; A supporting device includes two fixing blocks, a connecting piece, two screw rods and two nuts; the two screw rods are arranged vertically and symmetrically installed in the pipe trench; the connecting piece is "L" shaped and horizontally arranged on the "Z" shaped steel of the pipe trench on both sides of the upper end of the pipe trench; the two fixing blocks are installed at the bottom of both ends of the connecting piece; two through holes are opened on the connecting piece; the two screw rods pass through the two through holes respectively, and the two screw rods are connected to the connecting piece through the two nuts.

4. A construction method of the floor structure as claimed in claim 1, characterized in that: The following steps are involved: S1: Apply concrete cushion; S2: Lay out the pipe trench and compartment seam positions, and divide the floor into multiple floor zones; S3: Tie up the floor partition structure layer, the upper reinforcement of the trench and the lower reinforcement of the trench, and pour the concrete of the structure layer and the reinforcement area of ​​the trench; S4: Install the "Z"-shaped steel on the top of the steel bars in the trench and install the compartment joints on the top of the structural layer and level them; S5: Tie the surface layer steel bars, connect the surface layer steel bars with the upper steel bars of the trench on both sides of the surface layer and the compartment seams to form a whole, pour concrete in the surface layer and the upper steel bar area of ​​the trench, and use a laser leveling machine to level the concrete; S6: After the surface concrete has initially set, diamond sand is spread twice, and the surface is polished and finished with a grinder in turn; S7: Maintenance of cutting seams; S8: Spray the curing agent. After the curing agent is absorbed and penetrated, grind the ground three times. Finally, clean the ground to complete the diamond abrasive floor construction.

5. A large-area diamond sand floor construction method according to claim 4, characterized in that: In steps S4 and S5, the top surface of the surface layer is flush with the top surface of the "Z"-shaped steel of the trench and the compartment seam.

6. A large-area diamond sand floor construction method according to claim 4, characterized in that: In step S5, it specifically includes brushing epoxy interface agent on the junction of the "Z"-shaped steel of the pipe trench and the compartment seam with the surface concrete to enhance the bonding strength between the "Z"-shaped steel of the pipe trench and the compartment seam and the concrete; and leveling the concrete at the junction of the "Z"-shaped steel of the pipe trench and the surface layer with a vibration beam.

7. A large-area diamond sand floor construction method according to claim 4, characterized in that: In step S6, the corundum is spread twice, specifically including: the corundum is spread in a single direction twice, and the two spreading directions are different; 60% of the corundum with a particle size of 1-2 mm is spread for the first time, and 40% of the corundum with a particle size of 0.5-1 mm is spread for the second time; the corundum is spread by a spreader, and the spreader has spreading and leveling functions.

8. A large-area diamond sand floor construction method according to claim 4, characterized in that: In the step S7, the cutting seams are deformation seams; the deformation seams are filled with elastic sealant after cutting; and the deformation seams and the compartment seams are arranged alternately.

9. A large-area diamond sand floor construction method according to claim 1, characterized in that: Before step S6, it specifically includes: after the surface layer concrete is initially set, a trowel is used to grind and extract the slurry, and the surface of the surface layer is leveled with a 3-meter ruler.

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