A floor mold, floor structure and floor construction method
The floor structure is constructed through grid-shaped floor molds and post-tensioned prestressed steel strands, combined with prefabricated reinforced concrete components and cheap cement mixing piles, the problem of uneven settlement of the floor in industrial plants is solved, and efficient and economical Floor construction reduces the cost of the project and enhances crack resistance.
Patent Information
- Application Number
- CN202411313328.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- Filing Date
- 2024-09-20
- Publication Date
- 2024-12-31
- Estimated Expiration
- 2044-09-20
AI Technical Summary
The problem of uneven floor settlement in modern industrial plants is difficult to effectively control, resulting in production interruption and high cost. The existing technology can only alleviate settlement but cannot fundamentally solve the problem.
The grid-shaped floor mold is used to construct the floor structure by supporting pile molds and post-tension prestressed steel strands, forming prefabricated reinforced concrete U-shaped standard components and connectors, and combining with the vertical and cross-section bidirectional wellbeam beam slab structure, prestressing is applied To enhance stiffness and crack resistance, it is supported by cheap cement mixing soil piles.
It completely solves the problem of uneven floor settlement, reduces project cost, improves crack resistance and bearing capacity, saves steel and labor costs, and is suitable for the construction of floors of large industrial factories under complex foundations.
Smart Images
Figure CN118854965B_ABST
Abstract
Description
Technical Field
[0001] The present invention relates to the field of site floor structure and construction, and in particular to a floor mould, a floor structure and a floor construction method. Background Art
[0002] Modern production plants have increasingly strict control over the settlement of the floor. The uneven settlement of the floor of the plant will seriously affect the normal operation of the entire production line. Long piles are usually driven under the structural columns of the plant to strictly control the settlement, and the ground is usually filled to the designed floor elevation under the floor, and the foundation is reinforced, but the ground subsidence is often still not well controlled. For this reason, long piles are often driven to support the cast-in-place reinforced concrete beam and slab floor like the main structure to control the settlement of the floor. When the foundation soil of the construction site is complex and weak, the construction of the industrial plant floor is bound to be expensive, and improper treatment will still cause settlement differences, resulting in floor cracks and subsidence, affecting normal industrial production. Therefore, the foundation optimization treatment problem under the floor of these large industrial plants is one of the difficulties in today's geotechnical engineering.
[0003] Chinese patent CN201110451681.X discloses a method for preventing large-area floor settlement and cracking in soft soil areas by using bonded prestressed concrete beams. The method alleviates settlement by adjusting the soil structure and steel strands, but it can only alleviate ground settlement and cannot fundamentally solve the problems caused by ground settlement. Summary of the invention
[0004] The present invention aims at solving the shortcomings of the prior art and provides a floor structure.
[0005] In order to solve the above technical problems, the present invention is solved by the following technical solutions:
[0006] A floor formwork, the floor formwork comprises at least one plate, the plate is in a grid shape, the grid is composed of a number of mutually spliced rectangular floor bottom formwork units; a supporting pile formwork is arranged below the intersection of the floor bottom formwork units, the floor bottom formwork units are laid on the supporting pile formwork; the floor bottom formwork units comprise beam formworks on four sides and a rectangular plate formwork in the middle; steel strands are laid in the beam formwork, the two ends of the steel strands are anchored on the supporting pile formwork, the steel strands are post-tensioned prestressed steel strands, and the steel strands are post-tensioned to apply prestress after pouring the floor concrete.
[0007] Preferably, the supporting pile formwork includes a steel plate-shaped pile cap at the upper end, and the floor bottom formwork unit is laid on the pile cap; it also includes a pedestal, which is fixed on the pile cap, and both ends of the steel strand are anchored on the pedestal.
[0008] Preferably, the pile cap comprises a supporting steel plate, and anchor bars 1 are arranged in the transverse and longitudinal directions of the supporting steel plate, and the anchor bars 1 extend into the beam formwork.
[0009] Preferably, the beam formwork includes a trough-type beam body, the middle part of the beam body is a beam groove, the beam groove is arranged along the length direction of the beam body, the steel strands are laid in the beam groove, and beam wings are arranged on the outer side of the side wall of the beam body for supporting the plate formwork.
[0010] Preferably, a steel frame protruding from the plane of the formwork is provided in the middle of the upper surface of the formwork, and also includes a steel mesh, which is laid on the steel frame.
[0011] Preferably, the beam formwork and the plate formwork are prefabricated reinforced concrete formworks, and the steel bars of the plate formwork extend from four sides.
[0012] Preferably, the steel strands are coated with a slow-hardening layer, and the corners of the ends of the beam wings are provided with 45-degree chamfers.
[0013] The floor structure adopts one of the above-mentioned floor molds. The floor is divided into several mesh units according to preset blocks. Each mesh unit corresponds to a floor bottom mold unit. After the floor mold is laid, concrete is poured, and the tensioned steel strands are prestressed to form the floor structure.
[0014] A floor construction method comprises the following steps:
[0015] Step 1: Divide the column grid of the target area into independent floor structure blocks, and then divide each floor structure block into small squares with vertical and horizontal markings; each block shall be constructed as follows;
[0016] Step 2: Setting a supporting pile form at the intersection of the small squares, laying a floor bottom form unit on the supporting pile form, the floor bottom form unit comprising a prefabricated reinforced concrete beam form and a prefabricated reinforced concrete plate form. In this step, the beam form is laid first;
[0017] Step 3: The supporting pile formwork includes a steel sheet pile cap at the top, a standardized pedestal is welded on the steel sheet pile cap, steel strands are laid in the beam formwork, both ends of the steel strands are fixed on the pedestal, and then concrete is poured. After the concrete reaches a certain strength, the steel strands are tensioned to apply prestress;
[0018] Step 4: Lay the board formwork on the beam formwork, and carry out floor construction after the board formwork is laid;
[0019] The floor construction begins with laying steel bars on the slab formwork and beam formwork. The steel bars include first laying steel meshes covering the floor bottom formwork units, then laying steel meshes 1 covering the beam formwork, and finally laying steel meshes 2 covering each intersection. Then, pour concrete to complete the floor construction.
[0020] Or / and the floor construction adopts the prefabricated slab construction method instead of the above method, that is, after the slab formwork is laid, the prefabricated reinforced concrete surface slab is laid on the slab formwork.
[0021] Preferably, the outer periphery of the steel strand is wrapped with a slow-hardening material. After the poured concrete reaches the strength and is tensioned and prestressed and anchored, the outer covering material of the steel strand hardens and forms a whole with the concrete.
[0022] The floor structure designed by the present invention fundamentally solves the above problems and has the following advantages: first, the entire floor beam is directly placed on the pile cap of the structural column, which is completely consistent with the settlement of the main structure column cap, and the problem of controlling uneven settlement of the floor is completely solved; second, prefabricated reinforced concrete U-shaped standard components and several connecting parts are used to quickly form a template, which solves the problem of troublesome formwork for cast-in-place reinforced concrete floor slabs; third, a vertical and horizontal cross-bidirectional grid beam-slab structure is adopted to optimize the stress and deformation characteristics of the floor structure and improve the bearing capacity to resist heap loads; fourth, prestressed post-tensioned steel strands are used as the main force-bearing reinforcement in the grid longitudinal and transverse beams, which enhances rigidity, improves crack resistance, and greatly saves steel consumption; fifth, factory-produced steel mesh is used for laying, which greatly reduces the labor of tying steel bars and improves efficiency; sixth, all the connection points and tensioning pedestals of the floor structure are composed of only a few standardized, universal and simple components; seventh, regardless of the original building Whether the site is low-lying, there is no need to transport a large amount of soil for backfilling, which greatly saves the cost and avoids the adverse effect of negative friction of the structural piles caused by the compression of the fill in the later stage; Eighth, cheap cement-mixed soil piles are used as temporary support U-shaped standard component templates, and these temporary support pile templates are included as fulcrums in the force calculation of the floor structure, which can effectively reduce the force of the floor structure and achieve the purpose of saving cost; Ninth, it is suitable for large-scale modern industrial plant floors of various column grid sizes. When the column grid size of the plant is large, it is only necessary to replace a few cheap cement-mixed soil piles in the middle of the floor with long engineering piles, and divide the large area into blocks with reasonable force, which greatly reduces the force of the floor slab and realizes standardized construction; Tenth, the newly invented industrial plant floor method has very good comprehensive economic indicators. For floor construction under complex foundation conditions, it can greatly reduce the project cost and completely eliminate the hidden danger of uneven settlement of the floor. BRIEF DESCRIPTION OF THE DRAWINGS
[0023] Figure 1 It is a schematic diagram of the overall structure of the floor formwork, which is formed by splicing multiple floor bottom formwork units.
[0024] Figure 2 It is a structural diagram of the beam mold.
[0025] Figure 3 It is a three-dimensional diagram of the beam mold.
[0026] Figure 4 It is a structural diagram of the formwork.
[0027] Figure 5 It is a structural diagram of the formwork.
[0028] Figure 6 It is a structural diagram of the formwork.
[0029] Figure 7 It is a structural diagram of the pile cap and the supporting plate.
[0030] Figure 8 It is a schematic diagram of the structure after the supporting pile formwork, plate formwork and steel strands are poured with concrete.
[0031] Fig. 9 It is a schematic diagram of the structure after the supporting pile formwork, plate formwork, steel strands and pedestal are poured with concrete.
[0032] Fig.10 It is a schematic diagram of the structure of the pedestal.
[0033] Fig.11 It is a schematic diagram of the structure of the pedestal.
[0034] Fig.12 It is a schematic diagram of the structure of the pedestal.
[0035] Fig.13 It is a structural diagram of the supporting pile formwork.
[0036] Fig.14 It is a structural diagram of the steel mesh.
[0037] Fig.15 It is a schematic diagram of the structure of steel mesh sheet 1 and steel mesh sheet 2.
[0038] Fig.16 It is a schematic diagram of the structure of steel mesh sheet 1 and steel mesh sheet 2.
[0039] Fig.17 It is a schematic diagram of the structure of the plate.
[0040] The technical names of the accompanying drawings are: 1-support pile formwork, 2-floor bottom formwork unit, 3-beam formwork, 4-plate formwork, 5-steel strand, 6-pile cap, 7-pedestal, 8-support steel plate, 9-anchor bar 1, 11-beam groove, 12-beam wing, 13-rebar frame, 14-rebar mesh. DETAILED DESCRIPTION
[0041] The present invention is further described in detail below in conjunction with the accompanying drawings and embodiments.
[0042] Example 1
[0043] A floor mold, such as Figure 1 as well as Fig.17 As shown, the floor formwork includes at least one plate 0, the plate 0 is in a grid shape, and the grid is composed of a plurality of mutually spliced rectangular floor bottom formwork units 2. A support pile formwork 1 is arranged below the intersection of the floor bottom formwork units 2. The shape of the support pile formwork 1 is as shown in FIG. Fig.13 shown.
[0044] like Figures 2 to 4 The floor bottom formwork unit 2 is laid on the supporting pile formwork 1; obviously, the intersections of the edges and corners are also provided with supporting pile formworks 1, which will not be described separately here. The floor bottom formwork unit 2 includes beam formworks 3 on four sides and a rectangular plate formwork 4 in the middle; steel strands 5 are laid in the beam formwork 3, and the two ends of the steel strands 5 are anchored on the supporting pile formwork 1, specifically fixed on a pedestal 7 welded on the supporting pile formwork 1.
[0045] The steel strands 5 are post-tensioned prestressed steel strands 5. The post-tensioned steel strands 5 are prestressed after the floor concrete is poured, and the tensioning timing is confirmed according to the site, that is, the concrete in the tensioning cavity should be cured to a sufficient strength. The advantage of this design is that the components of the floor bottom formwork unit 2 can be designed in a standardized manner. For example, the beam formwork 3 and the plate formwork 4 can be prefabricated and then directly laid on the supporting pile formwork 1 on site to quickly complete the template laying. The specific laying method is to first place the beam formwork 3 on the steel sheet pile cap 6 at the top of the supporting pile formwork 1 and splice it in a rectangular shape. The four-sided beam formwork 3 is surrounded by a rectangular area and a rectangular hole is formed in the middle. The four sides of the plate formwork 4 are correspondingly placed on the four-sided beam formwork 3 to form a floor bottom formwork unit 2. In this embodiment, each beam formwork 3 can simultaneously set up the plate formwork 4 of the left floor bottom formwork unit 2 and the plate formwork 4 of the right bottom formwork unit. The structure of the plate formwork 4 is as follows: Figure 5 to Figure 6 shown.
[0046] like Figures 7 to 9 As shown, in this embodiment, the supporting pile formwork 1 includes a steel plate-shaped pile cap 6 at the upper end, and the floor bottom formwork unit 2 is laid on the pile cap 6; in this embodiment, the beam formwork 3 in the same transverse or longitudinal direction shares a set of steel strands 5, and pedestals 7 are provided at both ends of the same transverse or longitudinal beam formwork 3, that is, the pedestals 7 are provided on the supporting pile formwork 1 at the edge, and the pedestals 7 are fixed on the supporting pile formwork 1, specifically fixed on the pile cap 6, and the pedestals 7 are not provided on the middle beam formwork 3 and the middle supporting pile formwork 1. Both ends of the steel strands 5 that pass through the transverse or longitudinal beam formwork 3 are anchored on the pedestals 7 at both ends. The pile cap 6 is a flat piece made of steel plate, and the pile cap 6 provides reliable support for the laying of the beam formwork 3 and the plate formwork 4, which is convenient for the construction of the bottom formwork. The style of the pedestal 7 is designed according to needs, Figures 10 to 12 Schematic diagrams of the pedestal 7 installed in different positions.
[0047] Anchor bars 71 are arranged on the pedestal 7, and the anchor bars 71 extend into the beam formwork 3. As mentioned above, the pile cap 6 includes a supporting steel plate 8. In order to enable the supporting steel plate 8 to form an integral structure with the floor in the later stage, anchor bars 9 are arranged in the transverse and longitudinal directions of the supporting steel plate 8, and the anchor bars 9 extend into the beam formwork 3. The supporting steel plate 8 is a rectangular plate, and anchor bars 9 are arranged on all four sides. The anchor bars 9 extend into the beam formwork 3 placed on the pile cap 6, so that the supporting device and the beam formwork 3 and the plate formwork 4 form an integral structure after the concrete is poured. The specific structure is as follows Figure 7 shown.
[0048] like Figure 2 , Figure 3 , Figure 8 , Fig. 9 As shown, the beam formwork 3 includes a groove-shaped beam body, the middle part of the beam body is a beam groove 11, the beam groove 11 is arranged along the length direction of the beam body, the steel strand 5 is laid in the beam groove 11, and the outer side of the side wall of the beam body is provided with a beam wing 12 for supporting the plate formwork 4. The beam groove 11 is used to place the steel strand 5, and the steel strand 5 is used to apply post-stress to the floor and the beam formwork 3. The two ends of the steel strand 5 are finally anchored on the supporting pile formwork 1, specifically on the steel pedestal 7 fixed on the pile cap 6. The steel pedestal 7 can be set as a prefabricated standardized structure, which is convenient for unified installation and matching with other components in the later stage.
[0049] like Figure 5 and Figure 6 As shown, a steel frame 13 protruding from the plane of the formwork 4 is provided in the middle of the upper surface of the formwork 4. The steel frame 13 is used for laying the steel mesh of the floor surface. The steel mesh of the floor surface is a unified prefabricated part, which is laid on the steel frame 13, thereby saving the process of tying steel bars, saving manpower and cost, and improving efficiency.
[0050] like Figures 14 to 16 As shown, it also includes a steel mesh 14, which is laid on the steel frame 13. The steel mesh 14 is a unified prefabricated part, and the steel mesh 14 is laid on the steel frame 13, thereby saving the process of tying steel bars, saving manpower and cost, and improving efficiency. This embodiment also includes a steel mesh 15 laid on the beam mold 3 and a steel mesh 2 16 laid on the support pile; the steel mesh 14, the steel mesh 1 15 and the steel mesh 2 16 serve as a steel skeleton for forming the floor.
[0051] .The beam formwork 3 and plate formwork 4 in this embodiment are prefabricated reinforced concrete formworks, and the steel bars of the plate formwork 4 extend from four sides. As described above, the plate formwork 4 is a prefabricated standard rectangular reinforced concrete plate, and the internal steel bars extend from four sides, which is convenient for forming an integrated structure with the later pouring of concrete.
[0052] The steel strand 5 is coated with a slow hardening layer on the outside, and the hardening speed of the slow hardening layer is lower than that of concrete, so that the steel strand can still be tensioned during the post-tensioning process. After the poured concrete reaches the strength tensioning and prestressing anchoring is applied, the outer material of the steel strand 5 will harden and form a whole with the concrete. In this way, the use of high-strength steel strands 5 instead of traditional low-strength steel bars as the reinforcement of the longitudinal and transverse beams can not only meet the strength requirements of the floor under load and load, but also avoid the cumbersome process of tying the longitudinal and transverse beam steel bars. The simplified post-tensioning prestressing technology brings advantages to the construction of the floor, such as reducing the cross-section of the longitudinal and transverse beams and the amount of reinforcement, simplifying and improving the construction efficiency, saving construction costs, and enhancing the rigidity and crack resistance of the floor.
[0053] In order to facilitate the butt joint of the beam corners, a 45-degree chamfer is provided at the corners of the ends of the beam wings 12. Beam splicing is the splicing of adjacent beams in a vertical state.
[0054] Example 2
[0055] The floor structure is first divided into a number of plates 0 according to the preset, wherein the intersection of each plate 0 is provided with a supporting pile form 1. Each plate 0 adopts the floor form structure described in Example 1, each plate 0 is divided into a number of mesh units, each mesh unit corresponds to a floor bottom form unit 2, and after the floor form is laid, the floor structure is formed by reinforced concrete, and the steel strand is a post-tensioned prestressed steel strand.
[0056] The adjacent parts of the adjacent panels 0 are installed with their own beam molds 3. Specifically, at the joints of the adjacent panels 0, that is, at the positions of the intersecting support pile molds 1, two beam molds 3 are laid side by side, which are used for the two panels 0 respectively.
[0057] The floor formwork of the above embodiment is used to cast the floor. The floor is divided into several mesh units according to the preset blocks. Each mesh unit corresponds to a floor bottom formwork unit 2. After the floor formwork is laid, concrete is poured. After the concrete strength reaches the requirement, the steel strand 5 is tensioned to apply prestress so that the beam formwork 3 reaches the strength requirement, and then the plate formwork 4 is laid to carry out floor construction. The bottom formwork of this composite floor structure is prefabricated, the bending stress reinforcement of the rib beam is a high-strength post-tensioned prestressed steel strand 5, the shear stress reinforcement of the rib beam is replaced by the beam formwork 3 reinforcement, the plate bottom stress reinforcement is replaced by the prefabricated plate formwork 4, and the plate surface reinforcement is replaced by laying a standardized steel mesh. Directly pouring concrete forms this new composite floor structure. Because almost all accessories are standardized factory-produced, coupled with the optimized distribution of the floor bottom pile support, high-strength new materials and post-tensioned prestressing technology are first applied in the floor, making this composite floor structure technology safe and reliable, simple construction, high efficiency, low cost, low carbon energy saving, and green construction.
[0058] Example 3
[0059] A floor construction method comprises the following steps:
[0060] Step 1: Divide the column grid of the target area into independent floor structure blocks 0, and then divide each floor structure block 0 into vertical and horizontal standardized small squares; each block 0 is constructed as follows;
[0061] Step 2: Setting a supporting pile form 1 at the intersection of the small squares, laying a floor bottom form unit 2 on the supporting pile form 1, the floor bottom form unit 2 comprising a prefabricated reinforced concrete beam form 3 and a prefabricated reinforced concrete plate form 4, in this step, laying the beam form 3 first;
[0062] Step 3: The supporting pile formwork 1 includes a steel sheet pile cap 6 at the top, a standardized pedestal 7 is welded on the steel sheet pile cap 6, a steel strand 5 is laid in the beam formwork 3, both ends of the steel strand 5 are fixed on the pedestal 7, and then concrete is poured. After the concrete reaches a certain strength, the steel strand 5 is tensioned to apply prestress;
[0063] Step 4: Lay the board formwork 4 on the beam formwork 3, and carry out floor construction after the board formwork 4 is laid;
[0064] The floor construction firstly lays the steel bar group on the plate formwork 4 and the beam formwork 3. The steel bar group includes the steel mesh 14 covering the floor bottom formwork unit 2, the steel mesh 15 covering the beam formwork 3, and finally the steel mesh 2 16 covering each intersection, and then pours concrete to complete the floor construction.
[0065] The support pile form 1 in step 2 is set at the intersection of the square grid in the middle area, the intersection of the edges and the corners of the four corners, and of course, the intersection of each plate 0. The support pile form 1 is a metal component, and the upper pile cap 6 is a flat steel plate structure. The support pile form 1 is pre-buried or fixed in the cement mixing pile driven at the intersection, or directly driven into the soil layer.
[0066] The outer periphery of the steel strand 5 is wrapped with a slow-hardening material. After the poured concrete reaches the strength and is tensioned and prestressed and anchored, the outer covering material of the steel strand 5 hardens and forms a whole with the concrete.
[0067] Example 4
[0068] The difference from Example 3 is that in step 4, the floor construction adopts a prefabricated slab construction method instead of the above method, that is, after the slab formwork 4 is laid, a prefabricated reinforced concrete surface slab is laid on the slab formwork 4.
Claims
1. A floor formwork, characterized in that: The floor formwork comprises at least one plate (0), the plate (0) is in a grid shape, the grid is composed of a plurality of mutually spliced rectangular floor bottom formwork units (2), a supporting pile formwork (1) is arranged below the intersection of the floor bottom formwork units (2), and the floor bottom formwork units (2) are laid on the supporting pile formwork (1); the floor bottom formwork unit (2) comprises a plate formwork (4) in the middle and a beam formwork (3) constituting four sides of the rectangular floor bottom formwork unit (2); a steel strand (5) is laid in the beam formwork (3), and both ends of the steel strand (5) are anchored on the supporting pile formwork (1) and then tensioned to apply stress.
2. A floor formwork according to claim 1, characterized in that: The supporting pile formwork (1) comprises a steel plate-shaped pile cap (6) at the upper end, the floor bottom formwork unit (2) is laid on the pile cap (6), and the plate formwork (4) is rectangular and has four sides mounted on the beam formworks (3) at the four sides.
3. A floor formwork according to claim 1 or 2, characterized in that: The beam molds (3) in the same transverse or longitudinal direction share a set of steel strands (5), and pedestals (7) are provided at both ends of the same transverse or longitudinal beam mold (3). The pedestals (7) are fixed on the supporting pile mold (1), and both ends of the steel strands (5) passing through the transverse or longitudinal beam mold (3) are anchored on the pedestals (7) at both ends.
4. A floor formwork according to claim 3, characterized in that: The pile cap (6) comprises a supporting steel plate (8), and the supporting steel plate (8) is provided with anchor bars (9) in the transverse direction and the longitudinal direction, and the anchor bars (9) extend into the beam mold (3). The pedestal (7) is a steel pedestal, and anchor bars (71) are provided on the pedestal (7), and the anchor bars (71) extend into the beam mold (3).
5. A floor formwork according to claim 1, characterized in that: The beam formwork (3) comprises a groove-shaped beam body, the middle part of the beam body being a beam groove (11), the beam groove (11) being arranged along the length direction of the beam body, the steel strands (5) being laid in the beam groove (11), and beam wings (12) being arranged on the outer side of the side wall of the beam body for supporting the plate formwork (4).
6. A floor formwork according to claim 1, characterized in that: A steel bar frame (13) protruding from the plane of the plate formwork (4) is arranged in the middle of the upper surface of the plate formwork (4), and also includes a steel bar mesh (14), and the steel bar mesh (14) is laid on the steel bar frame (13).
7. A floor formwork according to claim 1, characterized in that: The beam formwork (3) and the plate formwork (4) are prefabricated reinforced concrete formworks; the steel bars of the plate formwork (4) extend from four sides, and the two ends and the upper part of the beam formwork (3) both extend with steel bars.
8. A floor formwork according to claim 1, characterized in that: The steel strand (5) is coated with a slow-hardening layer on the outside; it also includes a first steel mesh sheet (15) laid on the beam formwork (3) and a second steel mesh sheet (16) laid on the support piles.
9. Floor structure, characterized by: A floor formwork as described in claim 1 or 2 or 3 or 4 or 5 or 6 or 7 or 8 is used, wherein the block is divided into a plurality of plates (0), a supporting pile formwork (1) is provided at the intersection of each plate (0), each plate (0) is divided into a plurality of mesh units, each mesh unit corresponds to a floor bottom formwork unit (2), and after the floor formwork is laid, a floor structure is formed by reinforced concrete, and the steel strand (5) is a post-tensioned prestressed steel strand.
10. The floor structure according to claim 9, characterized in that: Adjacent locations of adjacent panels (0) are independently installed using respective beam moulds (3).
11. A floor construction method, characterized in that: The following steps are involved: Step 1: Divide the column grid of the target area into independent floor structure blocks (0), and then divide each floor structure block (0) into vertical and horizontal standardized small squares; each block (0) is constructed as follows; Step 2: a supporting pile form (1) is arranged at the intersection of the small squares, and a floor bottom form unit (2) is laid on the supporting pile form (1), wherein the floor bottom form unit (2) comprises a prefabricated beam form (3) made of reinforced concrete and a prefabricated plate form (4) made of reinforced concrete. In this step, the beam form (3) is laid first; Step 3, the supporting pile form (1) includes a steel sheet pile cap (6) at the top, a standardized pedestal (7) is welded on the steel sheet pile cap (6), a steel strand (5) is laid in the beam form (3), both ends of the steel strand (5) are fixed on the pedestal (7), and then concrete is poured. After the concrete reaches a certain strength, the steel strand (5) is tensioned to apply prestress; Step 4: laying the board formwork (4) on the beam formwork (3), and after the board formwork (4) is laid, performing floor construction; The floor construction first involves laying a steel bar group on the plate formwork (4) and the beam formwork (3), wherein the steel bar group includes first laying a steel mesh sheet (14) covering the floor bottom formwork unit (2), then laying a steel mesh sheet 1 (15) covering the beam formwork (3), and finally laying a steel mesh sheet 2 (16) covering each intersection, and then pouring concrete to complete the floor construction; Or / and the floor construction adopts a prefabricated slab construction method to replace the above method, that is, after the slab formwork (4) is laid, a prefabricated reinforced concrete surface slab is laid on the slab formwork (4).
12. A floor construction method according to claim 11, characterized in that: The outer periphery of the steel strand (5) is wrapped with a slow-hardening material. After the poured concrete reaches the required strength and is tensioned and prestressed for anchoring, the outer covering material of the steel strand (5) hardens and forms a whole with the concrete.