A prefabricated structure with self-insulating hidden beam floor

Abstract

The present invention provides a prefabricated self-insulating hidden beam floor, comprising prefabricated floor units formed by laying a plurality of steel prestressed concrete composite flat beams and a plurality of bidirectional prestressed prefabricated hollow slabs, transverse steel cables connecting the prefabricated floor units left and right, longitudinal steel cables connecting the prefabricated floor units front and back, columns fixed between adjacent prefabricated floor units, and wall panels filling the rectangular wall panel filling cavities of the left and right columns between the upper and lower adjacent prefabricated floor units. The columns are first fixed vertically, and then the wall panels are fixed between the left and right columns. The steel prestressed concrete composite flat beams and the bidirectional prestressed prefabricated hollow slabs are laid above the left and right columns, and the wall panels are fixed to the upper steel prestressed concrete composite flat beams. The bidirectional prestressed prefabricated hollow slabs of the entire layer are then connected together by transverse steel cables and longitudinal steel cables. This can enhance the integrity of the floor, eliminate the need for cast-in-place construction, and avoid wet work on site.

Description

Technical Field

[0001] The present invention belongs to the field of prefabricated houses, and in particular relates to a prefabricated structure with self-insulating hidden beams. Background Art

[0002] With the development of my country's economy, the requirements for housing construction speed are becoming increasingly higher. The extensive use of prefabricated beams and bidirectional prestressed hollow slabs during construction can shorten the construction process. However, existing prefabricated housing structures require the installation of load-bearing brackets under the composite floor slabs during installation, followed by a secondary pouring of concrete on the composite floor slabs. This has the disadvantage of requiring a large number of cast-in-place or composite construction steps, which results in a large amount of wet work on site and a long construction period. Summary of the Invention

[0003] In view of the shortcomings of the prior art described above, the purpose of the present invention is to provide a prefabricated self-insulating hidden beam floor slab to solve the problem that the prior art has a large number of cast-in-place or overlapping construction processes, which will lead to a large amount of wet work on site and a long construction period.

[0004] To achieve the above-mentioned and other related purposes, the present invention provides a prefabricated self-insulating hidden beam floor, the floor comprising:

[0005] Multi-story prefabricated floor units,

[0006] The multiple layers of prefabricated floor units are arranged in sequence from bottom to top, and the upper and lower adjacent prefabricated floor units are parallel to each other;

[0007] The assembled floor unit includes a plurality of steel prestressed concrete composite flat beams, a plurality of bidirectional prestressed prefabricated hollow slabs, a plurality of transverse steel cables and a plurality of longitudinal steel cables;

[0008] The four steel-prestressed concrete composite flat beams enclose a rectangular filling cavity, and the bidirectional prestressed prefabricated hollow slab is laid in the rectangular filling cavity;

[0009] A plurality of rectangular filled cavities are arranged in a rectangular array to form a whole floor;

[0010] The transverse steel cables penetrate the left and right side walls of the entire floor in the left and right directions, and connect the bidirectional prestressed prefabricated hollow slab and the steel prestressed concrete composite flat beam of the floor in the left and right directions into one piece;

[0011] The axes of the longitudinal steel cables and the transverse steel cables are perpendicular to each other, and the longitudinal steel cables penetrate the front and rear side walls of the entire floor in the front-to-rear direction, and connect the bidirectional prestressed prefabricated hollow slab and the steel-prestressed concrete composite flat beam in the front-to-rear direction into one piece;

[0012] Several pillars,

[0013] There are columns between adjacent floors, and each rectangular steel prestressed concrete composite flat beam filling the cavity is placed between adjacent columns, and the upper and lower adjacent columns are fixedly connected;

[0014] The adjacent columns on the same floor are respectively a left column and a right column, the steel prestressed concrete synthetic flat beam between the left column and the right column is respectively an upper steel prestressed concrete synthetic flat beam and a lower steel prestressed concrete synthetic flat beam, and the left column, the right column, the upper steel prestressed concrete synthetic flat beam and the lower steel prestressed concrete synthetic flat beam form a rectangular wall panel to fill the cavity;

[0015] Several wall panels,

[0016] The wall panel is filled in the rectangular wall panel filling cavity, and the wall panel is fixedly connected to the left column, the right column, the upper steel prestressed concrete synthetic flat beam and the lower steel prestressed concrete synthetic flat beam.

[0017] As an optional solution, the steel-prestressed concrete composite flat beam includes an upper cover plate, two side plates, two end plates, prestressed steel cables, a connecting plate and a wing plate;

[0018] The two side panels and the two end panels form a rectangular cavity, the rectangular cavity is filled with concrete, and upper cover panels are fixedly installed on the top surfaces of the side panels and the end panels, and the upper cover panel is used to close the upper opening of the rectangular cavity, the length direction of the side panels is the length direction of the steel prestressed concrete composite flat beam, the prestressed steel cable is located at the lower part of the rectangular cavity, the prestressed steel cable is fixedly connected between the two end panels, a plurality of the connecting plates are fixedly connected between the two side panels, and the connecting plates are located above the prestressed steel cables, the wing panels are fixedly connected to the side panels, the bottom end surfaces of the wing panels are flush with the bottom end surfaces of the side panels, and the bidirectional prestressed prefabricated hollow panels are placed on the wing panels;

[0019] There are two wing plates in each rectangular filling cavity, and the two wing plates are respectively located on two opposite sides of the rectangular filling cavity.

[0020] As an optional solution, the bidirectional prestressed prefabricated hollow slab includes a concrete body, a transverse prestressed hollow tube, a transverse prestressed steel hidden beam, a longitudinal prestressed steel cable, a first through hole, a first steel plate and a second steel plate;

[0021] The transverse prestressed hollow tube is embedded in the concrete body along the width direction of the concrete body, and the axis of the transverse prestressed hollow tube is perpendicular to the left side wall of the concrete body;

[0022] The transverse prestressed steel bar hidden beam is a hollow rectangle formed by steel bars, the transverse prestressed hollow tube is located in the hollow rectangle of the transverse prestressed steel bar hidden beam, and the transverse prestressed steel bar hidden beam is embedded in the concrete body along the width direction of the concrete body;

[0023] The longitudinal prestressed steel cables are embedded in the concrete body along the length direction of the concrete body, and the axes of the longitudinal prestressed steel cables are perpendicular to the front side wall of the concrete body, and the transverse prestressed hollow tubes are perpendicular to the longitudinal prestressed steel cables;

[0024] The first steel plate is embedded in the left wall of the concrete body, and the second steel plate is embedded in the right wall of the concrete body;

[0025] The first steel plate is fixedly connected to the left end surface of the transverse prestressed hollow tube, and the second steel plate is fixedly connected to the right end surface of the transverse prestressed hollow tube;

[0026] The first through hole passes through the front and rear side walls of the concrete body;

[0027] The transverse steel cables pass through the transverse prestressed hollow tubes and are used to connect the bidirectional prestressed prefabricated hollow slabs on the same floor in the left and right directions;

[0028] The longitudinal steel cables pass through the first through holes and are used to connect the bidirectional prestressed prefabricated hollow slabs on the same floor in the front-to-back direction.

[0029] As an optional solution, the bottom end surface of the concrete body is provided with a notch along its width direction that matches the wing plate, the bottom end surface of the concrete body is flush with the bottom end surface of the wing plate, and the concrete body is placed between the two wing plates in the rectangular filling cavity;

[0030] A plurality of negative bending moment steel bars are fixedly connected in parallel above the notch of the concrete body, and the negative bending moment steel bars are fixedly connected to the upper cover plate of the steel prestressed concrete synthetic flat beam.

[0031] As an optional solution, the height of the steel-prestressed concrete synthetic flat beam is lower than the height of the concrete body, the top of the steel-prestressed concrete synthetic flat beam is filled with concrete, and the upper end surface of the solidified concrete is flush with the upper end surface of the concrete body.

[0032] As an optional solution, the front and rear side walls of the concrete body are both provided with arc-shaped grooves running through the left and right side walls. The arc-shaped grooves of adjacent concrete bodies are connected to form through grooves, and the arc-shaped grooves are connected to the area above the upper end surface of the steel-prestressed concrete composite flat beam.

[0033] As an optional solution, the steel-prestressed concrete composite flat beam is divided into edge beams located at the boundaries of the floors and a central flat beam located at the center area of the floors;

[0034] The transverse steel cable passes through the side beam on the left side of the floor, the transverse prestressed hollow tube of the bidirectional prestressed prefabricated hollow slab in the first rectangular filling cavity, the first longitudinal center flat beam, the transverse prestressed hollow tube of the bidirectional prestressed prefabricated hollow slab in the second rectangular filling cavity, the second longitudinal center flat beam, ..., and the side beam on the right side of the floor;

[0035] One end of the transverse steel cable is fixedly connected to the side beam on the left side, and the other end of the transverse steel cable is fixedly connected to the side beam on the right side;

[0036] The longitudinal steel cables pass through the edge beams at the front side of the floor, the first through hole of the bidirectional prestressed prefabricated hollow slab in the first rectangular filling cavity, the first transverse central flat beam, the first through hole of the bidirectional prestressed prefabricated hollow slab in the second rectangular filling cavity, the second transverse central flat beam, ..., and the edge beams at the rear side of the floor;

[0037] One end of the longitudinal steel cable is fixedly connected to the side beam at the front side of the floor, and the other end of the longitudinal steel cable is fixedly connected to the side beam at the rear side of the floor.

[0038] As an optional solution, the columns of the prefabricated floor units on the lower layer are lower columns, and the columns of the prefabricated floor units on the upper layer are upper columns;

[0039] The floor slab further includes a connection unit connecting the lower column and the upper column, wherein the connection unit includes a square protrusion, a first steel bar, a second steel bar, and a second through hole;

[0040] The end plates of the adjacent steel-prestressed concrete composite flat beams form a raised receiving cavity; a plurality of the first steel bars are vertically fixed to the upper end surface of the lower column, and a plurality of the second steel bars are vertically fixed to the lower end surface of the upper column, with the first steel bars corresponding to the second steel bars one by one;

[0041] The steel-prestressed concrete composite flat beam is provided with a second through hole extending through the upper and lower end surfaces. The outer diameter of the first steel bar is smaller than the inner diameter of the second through hole. The first steel bar passes through the second through hole and is fixedly connected to the second steel bar. The square protrusion is fixedly connected to the lower end surface of the upper column and is inserted into the protrusion receiving cavity.

[0042] The space between the lower column and the upper column is filled with concrete.

[0043] As an optional solution, the connection unit further includes a third steel bar and a fourth steel bar;

[0044] The third steel bar is vertically fixed to the upper end surface of the lower column, and the third steel bar passes through the upper and lower end surfaces of the bidirectional prestressed prefabricated hollow slab;

[0045] The fourth steel bar is vertically fixed to the lower end surface of the upper column, and the third steel bar corresponds to the fourth steel bar one by one;

[0046] The bidirectional prestressed prefabricated hollow slab is provided with a third through hole penetrating the upper and lower end surfaces. The outer diameter of the third steel bar is smaller than the inner diameter of the third through hole. The third steel bar passes through the third through hole and is fixedly connected to the fourth steel bar.

[0047] As an optional solution, the wall panel includes a plurality of thermal insulation sub-wall panels, upper rivets, side rivets and steel tenons;

[0048] The outer side of the side beam is also provided with a wing plate;

[0049] Adjacent thermal insulation sub-wall panels are connected by mortise and tenon structures, and a plurality of thermal insulation sub-wall panels are spliced into a rectangular wall panel, and the rectangular wall panel is filled in the rectangular wall panel filling cavity;

[0050] The thermal insulation sub-wall panels all include a concrete layer, a thermal insulation layer and an external impact-resistant layer;

[0051] The thermal insulation layer is located between the concrete layer and the external impact-resistant layer, and the thermal insulation layer is fixedly connected to the concrete layer and the external impact-resistant layer;

[0052] The upper rivet is fixed to the lower end surface of the upper side beam, and an upper rivet hole is opened on the upper end surface of the concrete layer of the rectangular wall panel, and the upper rivet is inserted into the upper rivet hole;

[0053] The left column and the right column are both provided with side rivets, and the two ends of the side rivets are respectively inserted into the filling cavities of the two adjacent rectangular wall panels, and the side rivets are inserted into the concrete layer of the rectangular wall panels;

[0054] The steel tenon is inserted into the concrete layer of the entire vertical insulation sub-wall panel from top to bottom, the upper end surface of the steel tenon extends upward and passes through the upper and lower end surfaces of the wing plate of the upper side beam, and the upper portion of the steel tenon is fixedly connected to the wing plate of the upper side beam;

[0055] The heat-insulating sub-wall panel at the lower part of the cavity filled by the rectangular wall panel is fixed on the lower side beam through steel bars.

[0056] As described above, the prefabricated self-insulating hidden beam floor slab of the present invention has at least the following beneficial effects:

[0057] 1. This application can quickly realize the assembly and construction of the entire floor through the assembly of columns, steel prestressed concrete composite flat beams, bidirectional prestressed prefabricated hollow slabs and wall panels. By building layer by layer, the construction of the house can be quickly realized, thereby accelerating the construction speed of the house;

[0058] 2. This application places the bottom wall of the steel-prestressed concrete composite flat beam and the bottom wall of the bidirectional prestressed hollow slab on the columns, thereby achieving the flushness of the bottom end surface of the steel-prestressed concrete composite flat beam and the bottom end surface of the bidirectional prestressed hollow slab, ensuring the usable space of the lower floor and facilitating full and reasonable utilization of the housing space;

[0059] 3. This application connects the entire floor into one piece by providing transverse and longitudinal steel cables, further enhancing the joint working performance of the steel prestressed concrete composite flat beams and bidirectional prestressed prefabricated hollow slabs laid on the columns;

[0060] 4. The present application provides an arc-shaped groove, which is connected to the area above the upper end surface of the steel-prestressed concrete composite flat beam. When the concrete is filled between the height difference between the steel-prestressed concrete composite flat beam and the floor, the concrete will flow into the arc-shaped groove, thereby further fixing and limiting the bidirectional prestressed prefabricated hollow slab.

[0061] 5. When installing and laying the floors, the present application requires the laying of the steel prestressed concrete composite flat beams and the bidirectional prestressed prefabricated hollow slabs. Therefore, the raised accommodating cavity is already formed when the floors are laid, which can further save the installation time of the upper columns.

[0062] 6. The present application can achieve pre-positioning of the lower column and the upper column by inserting the square protrusion into the protrusion receiving cavity, and can achieve fixed connection of the lower column and the upper column by fixing the first steel bar to the second steel bar, thereby achieving rapid fixed installation of the upper and lower columns;

[0063] 7. The present application sets the outer diameter of the first steel bar to be smaller than the first through hole, and sets the outer diameter of the second steel bar to be smaller than the second through hole. When concrete is filled between the first column and the second column, the concrete will flow into the first through hole and the second through hole, which can further fix the steel-prestressed concrete composite flat beam and the bidirectional prestressed prefabricated hollow slab. BRIEF DESCRIPTION OF THE DRAWINGS

[0064] Figure 1 Shown is a schematic structural diagram of the present invention;

[0065] Figure 2 Shown as the present invention Figure 1 A partial enlarged view of point A in the middle;

[0066] Figure 3 Shown as the present invention Figure 1 A partial enlarged view of point B in the middle;

[0067] Figure 4 Shown is a structural schematic diagram of a steel-prestressed concrete composite flat beam without an upper cover plate installed in the present invention;

[0068] Figure 5 Shown is a structural cross-sectional view of an entire floor in the front-to-back direction of the present invention;

[0069] Figure 6 Shown is a structural cross-sectional view of an entire floor in the left-right direction of the present invention;

[0070] Figure 7 Shown is a top view of a bidirectional prestressed prefabricated hollow slab of the present invention;

[0071] Figure 8 Shown as the present invention Figure 7 Structural cross-section view at CC;

[0072] Figure 9 Shown is a schematic diagram of the arrangement of the transverse prestressed hollow tube and transverse prestressed steel bar concealed beam structure of the present invention;

[0073] Figure 10 Shown is a schematic structural diagram of the connecting unit of the present invention;

[0074] Figure 11 Shown as the present invention Figure 10 A partial enlarged view of point D in the middle;

[0075] Figure 12 Shown is a structural cross-sectional view of a connecting unit of the present invention;

[0076] Figure 13 Shown is a top view of the left and right columns, upper and lower steel prestressed concrete composite flat beams and wall panels of the present invention;

[0077] Figure 14 Shown as the present invention Figure 13 Structural cross-section view at EE in the middle;

[0078] Figure 15 Shown as the present invention Figure 14 A partial enlarged view of point F in the middle;

[0079] Figure 16 Shown is a cross-sectional view of the connection structure of adjacent thermal insulation sub-wall panels of the present invention;

[0080] Figure 17 Shown is a cross-sectional view of the connection structure between the side rivet and the rectangular wall panel of the present invention;

[0081] Figure 18 Shown is a cross-sectional view of the structure of the column of the present invention.

[0082] In the figure: 1. Steel-prestressed concrete composite flat beam; 2. Bidirectional prestressed precast hollow slab; 3. Transverse steel cables; 4. Longitudinal steel cables; 5. Columns;

[0083] 101. Side plate; 102. End plate; 103. Prestressed steel cable; 104. Connecting plate; 105. Wing plate; 106. Upper cover plate;

[0084] 201. Concrete body; 202. Transverse prestressed hollow tube; 203. Transverse prestressed steel hidden beam; 204. First through hole; 205. First steel plate; 206. Second steel plate; 207. Notch; 208. Arc-shaped groove; 209. Longitudinal prestressed steel cable; 210. Negative bending moment reinforcement; 211. Support reinforcement;

[0085] 501. Square protrusion; 502. First steel bar; 503. Second steel bar; 504. Second through hole; 505. Protrusion accommodating cavity; 506. Third steel bar; 507. Fourth steel bar; 508. Third through hole; 509. Column insulation layer; 510. Column protective layer;

[0086] 601. Concrete layer; 602. Insulation layer; 603. External impact-resistant layer; 604. Top rivets; 605. Side rivets; 606. Steel tenons. DETAILED DESCRIPTION

[0087] The following describes the implementation of the present invention through specific embodiments. People skilled in the art can easily understand other advantages and effects of the present invention from the contents disclosed in this specification.

[0088] See also Figures 1 to 18 . It should be noted that the structures, proportions, sizes, etc. illustrated in the drawings of this specification are only used to match the contents disclosed in the specification for people familiar with this technology to understand and read, and are not used to limit the limiting conditions for the implementation of the present invention. Therefore, they have no substantive technical significance. Any modification of the structure, change in the proportional relationship or adjustment of the size should still fall within the scope of the technical content disclosed by the present invention without affecting the efficacy and purpose that can be achieved by the present invention. At the same time, the terms such as "upper", "lower", "left", "right", "middle" and "one" quoted in this specification are only for the convenience of description, and are not used to limit the scope of the implementation of the present invention. Changes or adjustments in their relative relationships should also be regarded as the scope of the implementation of the present invention without substantially changing the technical content.

[0089] The following embodiments are for illustration only and can be combined with each other, and are not limited to the contents presented in the following single embodiments.

[0090] See also Figures 1 to 3 The present invention provides a prefabricated self-insulating hidden beam floor, which comprises:

[0091] Multi-story prefabricated floor units,

[0092] The multiple layers of prefabricated floor units are arranged in sequence from bottom to top, and the upper and lower adjacent prefabricated floor units are parallel to each other;

[0093] The assembled floor unit comprises a plurality of steel prestressed concrete composite flat beams 1, a plurality of bidirectional prestressed prefabricated hollow slabs 2, a plurality of transverse steel cables 3 and a plurality of longitudinal steel cables 4;

[0094] Since the steel prestressed concrete composite flat beam 1 and the bidirectional prestressed prefabricated hollow slab 2 are both prestressed structures, there is no need to cast concrete again after assembling them;

[0095] The four steel-prestressed concrete composite flat beams 1 form a rectangular filling cavity, and the bidirectional prestressed prefabricated hollow slab 2 is laid in the rectangular filling cavity;

[0096] A plurality of rectangular filled cavities are arranged in a rectangular array to form a whole floor;

[0097] The transverse steel cables 3 pass through the left and right side walls of the entire floor in the left and right directions, and connect the bidirectional prestressed prefabricated hollow slab 2 and the steel prestressed concrete composite flat beam 1 of the floor in the left and right directions to form an integral whole;

[0098] The axis of the longitudinal steel cable 4 is perpendicular to the axis of the transverse steel cable 3. The longitudinal steel cable 4 passes through the front and rear side walls of the entire floor in the front-to-rear direction, and connects the bidirectional prestressed prefabricated hollow slab 2 and the steel-prestressed concrete composite flat beam 1 in the front-to-rear direction into one piece.

[0099] Several pillars 5,

[0100] There are columns 5 between adjacent floors, and each rectangular cavity-filling steel prestressed concrete composite flat beam 1 is placed between adjacent columns 5, and the upper and lower adjacent columns 5 are fixedly connected;

[0101] The adjacent columns 5 on the same floor are respectively a left column and a right column, and the steel prestressed concrete synthetic flat beam 1 between the left column and the right column is respectively an upper steel prestressed concrete synthetic flat beam and a lower steel prestressed concrete synthetic flat beam, and the left column, the right column, the upper steel prestressed concrete synthetic flat beam and the lower steel prestressed concrete synthetic flat beam form a rectangular wall panel to fill the cavity;

[0102] Several wall panels,

[0103] The wall panel is filled in the rectangular wall panel filling cavity, and the wall panel is fixedly connected to the left column, the right column, the upper steel prestressed concrete synthetic flat beam and the lower steel prestressed concrete synthetic flat beam.

[0104] First, fix the columns 5 of the entire floor vertically, then place and fix the wall panels between two adjacent columns 5, and then place steel prestressed concrete synthetic flat beams 1 longitudinally or transversely on the columns 5 to form filling cavities one by one, and then place bidirectional prestressed prefabricated hollow slabs 2 in the filling cavities, and place the four corners of the bidirectional prestressed prefabricated hollow slabs 2 on the four columns 5, and install the transverse steel cables 3 and the longitudinal steel cables 4 in sequence, so as to realize the paving of the entire floor, and then fix the columns 5 of the upper floor on the columns 5 below them, and then start paving the upper floor. By going up layer by layer, the assembled paving of the entire building can be realized.

[0105] In this embodiment, please refer to Figures 4 to 6 The steel-prestressed concrete composite flat beam includes an upper cover plate 106, two side plates 101, two end plates 102, prestressed steel cables 103, a connecting plate 104 and a wing plate 105;

[0106] The two side panels 101 and the two end panels 102 form a rectangular cavity, and the rectangular cavity is filled with concrete. The top surfaces of the side panels 101 and the end panels 102 are fixedly installed with upper cover plates 106, and the upper cover plate 106 is a steel plate or an iron plate. The upper cover plate 106 is used to close the upper opening of the rectangular cavity. The length direction of the side panels 101 is the length direction of the steel prestressed concrete synthetic flat beam 1. The prestressed steel cable 103 is located at the lower part of the rectangular cavity. The prestressed steel cable 103 is fixedly connected between the two end panels 102. Several connecting plates 104 are fixedly connected between the two side panels 101, and the connecting plates 104 are located above the prestressed steel cables 103. The wing plates 105 are fixedly connected to the side panels 101, and the bottom end surfaces of the wing plates 105 are flush with the bottom end surfaces of the side panels 101. The bidirectional prestressed prefabricated hollow slab 2 is placed on the wing plates 105.

[0107] There are two wing panels 105 in each rectangular filling cavity, and the two wing panels 105 are respectively located on two opposite sides of the rectangular filling cavity.

[0108] By providing the prestressed steel cables 103, when the prefabricated steel prestressed concrete composite flat beam 1 is produced in the factory, the prestressed steel cables 103 can act on the lower end surface of the steel prestressed concrete composite flat beam 1. The upper cover plate 106 can ensure that the upper end surface of the steel prestressed concrete composite flat beam 1 will not be deformed, thereby preventing the steel prestressed concrete composite flat beam 1 from arching and affecting the performance of the steel prestressed concrete composite flat beam 1. The provided connecting steel plate can increase the compressive strength of the steel prestressed concrete composite flat beam 1.

[0109] By arranging wing plates 105 on the steel-prestressed concrete composite flat beams 1 on opposite sides, the bidirectional prestressed prefabricated hollow slab 2 can be placed on the wing plates 105, thereby achieving preliminary positioning and laying of the bidirectional prestressed prefabricated hollow slab 2.

[0110] In this embodiment, please refer to Figures 7 to 9 The bidirectional prestressed prefabricated hollow slab includes a concrete body 201, a transverse prestressed hollow tube 202, a transverse prestressed steel hidden beam 203, a longitudinal prestressed steel cable 209, a first through hole 204, a first steel plate 205 and a second steel plate 206;

[0111] The transverse prestressed hollow tube 202 is embedded in the concrete body 201 along the width direction of the concrete body 201, and the axis of the transverse prestressed hollow tube 202 is perpendicular to the left side wall of the concrete body 201;

[0112] The transverse prestressed steel bar hidden beam 203 is a hollow rectangle formed by steel bars, and the transverse prestressed hollow tube 202 is located in the hollow rectangle of the transverse prestressed steel bar hidden beam 203. The transverse prestressed steel bar hidden beam 203 is embedded in the concrete body 201 along the width direction of the concrete body 201;

[0113] The longitudinal prestressed steel cables 209 are embedded in the concrete body 201 along the length direction of the concrete body 201, and the axes of the longitudinal prestressed steel cables 209 are perpendicular to the front side wall of the concrete body 201. The transverse prestressed hollow tubes 202 are perpendicular to the longitudinal prestressed steel cables 209.

[0114] The first steel plate 205 is embedded in the left wall of the concrete body 201, and the second steel plate 206 is embedded in the right wall of the concrete body 201;

[0115] The first steel plate 205 is fixedly connected to the left end surface of the transverse prestressed hollow tube 202, and the second steel plate 206 is fixedly connected to the right end surface of the transverse prestressed hollow tube 202;

[0116] The first through hole 204 passes through the front and rear side walls of the concrete body 201;

[0117] The transverse steel cables 3 pass through the transverse prestressed hollow tubes 202 and are used to connect the bidirectional prestressed prefabricated hollow slabs 2 on the same floor in the left and right directions;

[0118] The longitudinal steel cables 4 pass through the first through holes 204 and are used to connect the bidirectional prestressed prefabricated hollow slabs 2 on the same floor in the front-to-back direction.

[0119] By providing the transverse prestressed hollow tube 202, the transverse prestressed steel hidden beam 203 and the longitudinal prestressed steel cable 209, a transverse and longitudinal combined bidirectional prestressed structural composite floor slab can be realized;

[0120] After multiple bidirectional prestressed prefabricated hollow slabs 2 are laid in parallel, the first steel plate 205 of one bidirectional prestressed prefabricated hollow slab 2 is welded to the second steel plate 206 of another bidirectional prestressed prefabricated hollow slab 2 to fix the bidirectional prestressed prefabricated hollow slab 2 first.

[0121] The lower part of the concrete body 201 is provided with supporting steel bars 211 bundled in the horizontal and vertical directions to increase the strength of the concrete body 201.

[0122] There is EPS lightweight shaped material between adjacent transverse prestressed steel bar hidden beams 203, and the length direction of the EPS lightweight shaped material is parallel to the length direction of the longitudinal prestressed steel cable 209;

[0123] The cross section of the EPS lightweight shaping material is a "U" shape with a sealed upper portion.

[0124] By arranging EPS lightweight shaped materials in the concrete body 201, the weight of the floor slab can be reduced while ensuring the performance of the bidirectional prestressed prefabricated hollow slab 2, making transportation and installation easier.

[0125] In this embodiment, please refer to Figure 5 The bottom end surface of the concrete body 201 is provided with a notch 207 along its width direction that matches the wing plate 105. The bottom end surface of the concrete body 201 is flush with the bottom end surface of the wing plate 105. The concrete body 201 is placed between the two wing plates 105 in the rectangular filling cavity.

[0126] A plurality of negative bending moment steel bars 210 are fixedly connected in parallel above the notch 207 of the concrete body 201 , and the negative bending moment steel bars 210 are fixedly connected to the upper cover plate 106 of the steel-prestressed concrete composite flat beam 1 .

[0127] The two notches 207 of the bidirectional prestressed prefabricated hollow slab 2 are matched with the two wing plates 105 in the rectangular filling cavity, so that when the bidirectional prestressed prefabricated hollow slab 2 is placed on the wing plates 105, the notches 207 match the wing plates 105, so that the bottom end surface of the bidirectional prestressed prefabricated hollow slab 2 is flush with the bottom end surface of the steel prestressed concrete composite flat beam 1, thereby ensuring the flatness of the lower end surface of the floor;

[0128] The negative bending moment reinforcement 210 here can be prefabricated and formed integrally with the concrete body 201. After the bidirectional prestressed prefabricated hollow slab 2 is laid in the rectangular filling cavity, the negative bending moment reinforcement 210 is fixedly connected to the upper cover plate 106 of the steel-prestressed concrete synthetic flat beam 1 bonded to it by welding, so as to improve the shear resistance of the end of the bidirectional prestressed prefabricated hollow slab 2 and improve the seismic performance of the bidirectional prestressed prefabricated hollow slab 2.

[0129] In this embodiment, please refer to Figures 6 to 8 The height of the steel-prestressed concrete composite flat beam 1 is lower than the height of the concrete body 201 , and the top of the steel-prestressed concrete composite flat beam 1 is filled with concrete, and the upper end surface of the solidified concrete is flush with the upper end surface of the concrete body 201 .

[0130] By setting the height of the steel-prestressed concrete composite flat beam 1 to be slightly lower than that of the bidirectional prestressed prefabricated hollow slab 2, the bidirectional prestressed prefabricated hollow slab 2 and the steel-prestressed concrete composite flat beam 1 in different rectangular filling cavities can be connected into one through the concrete poured thereon, thereby increasing their integrity.

[0131] In this embodiment, please refer to Figure 1 and Figure 3 The front and rear side walls of the concrete body 201 are both provided with arc-shaped grooves 208 running through the left and right side walls. The arc-shaped grooves 208 of adjacent concrete bodies 201 are connected to form a through groove, and the arc-shaped grooves 208 are connected to the area above the upper end surface of the steel-prestressed concrete composite flat beam 1.

[0132] After laying multiple bidirectional prestressed prefabricated hollow slabs 2 in the rectangular filling cavity, the arc-shaped grooves 208 of adjacent bidirectional prestressed prefabricated hollow slabs 2 will be connected to form a through groove. When concrete is poured on the steel-section prestressed concrete synthetic flat beam 1, the concrete will also enter the through hole, thereby enhancing the connection performance between the steel-section prestressed concrete synthetic flat beam 1 and the bidirectional prestressed prefabricated hollow slab 2.

[0133] In this embodiment, please refer to Figures 5 and 6 The steel-prestressed concrete composite flat beam 1 is divided into edge beams located at the boundaries of the floors and a central flat beam located at the center area of the floors;

[0134] The transverse steel cable 3 passes through the side beam on the left side of the floor, the transverse prestressed hollow tube 202 of the bidirectional prestressed prefabricated hollow slab 2 in the first rectangular filling cavity, the first longitudinal center flat beam, the transverse prestressed hollow tube 202 of the bidirectional prestressed prefabricated hollow slab 2 in the second rectangular filling cavity, the second longitudinal center flat beam, ..., and the side beam on the right side of the floor;

[0135] One end of the transverse steel cable 3 is fixedly connected to the left side beam, and the other end of the transverse steel cable 3 is fixedly connected to the right side beam;

[0136] The longitudinal steel cable 4 passes through the edge beam at the front side of the floor, the first through hole 204 of the bidirectional prestressed prefabricated hollow slab 2 in the first rectangular filling cavity, the first transverse center flat beam, the first through hole 204 of the bidirectional prestressed prefabricated hollow slab 2 in the second rectangular filling cavity, the second transverse center flat beam, ..., and the edge beam at the rear side of the floor;

[0137] One end of the longitudinal steel cable 4 is fixed to the side beam at the front side of the floor, and the other end of the longitudinal steel cable 4 is fixed to the side beam at the rear side of the floor.

[0138] The transverse steel cable 3 passes through the left side beam, the bidirectional prestressed prefabricated hollow slab 2 in the first rectangular filling cavity, the first longitudinally arranged central flat beam, the bidirectional prestressed prefabricated hollow slab 2 in the second rectangular filling cavity, the second longitudinally arranged central flat beam, and the right side beam in sequence from left to right. The left side of the transverse steel cable 3 is first fixed to the left side beam by welding. The right side of the transverse steel cable 3 applies tension to tighten the transverse steel cable 3 and fix it to the right side beam. The transverse steel cable 3 can connect the entire floor in the left and right directions as a whole.

[0139] The longitudinal steel cables 4 sequentially pass through the front side edge beam, the bidirectional prestressed prefabricated hollow slab 2 in the first rectangular filling cavity, the first transversely arranged central flat beam, the bidirectional prestressed prefabricated hollow slab 2 in the second rectangular filling cavity, the second transversely arranged central flat beam, ..., and the rear side beam from front to back, thereby connecting the entire floor into one piece in the front-to-back direction.

[0140] Each of the side beams on the front and rear sides of the floor is connected by a plurality of longitudinal steel cables 4. Moreover, the first and last longitudinal steel cables 4 on each side beam are located above the column 5 supporting the side beam. Since the longitudinal steel cables 4 at the end of the side beam will pass through the bidirectional prestressed precast hollow slab 2, the bidirectional prestressed precast hollow slab 2 and the side beam can be combined into a composite beam. The longitudinal steel cables 4 are located in the upper area of the beam, which increases the bearing capacity of the side beam.

[0141] Each side beam on the left and right sides of the floor is connected by multiple transverse steel cables 3, and the outside of the transverse steel cables 3 is equipped with transverse prestressed steel hidden beams 203. When the bidirectional prestressed prefabricated hollow slab 2 is placed between the two wing plates 105, the wing plates 105 will also provide support for the transverse prestressed steel hidden beams 203, thereby further supporting the bidirectional prestressed prefabricated hollow slab 2. At the same time, the first and last transverse steel cables 3 on each side beam are arranged to be located above the column 5 supporting the side beam, that is, the first and last transverse prestressed steel hidden beams 203 will also be placed on the column 5 to provide support for the entire floor.

[0142] In this embodiment, please refer to Figure 10 and Figure 12 , the columns 5 of the prefabricated floor units on the lower layer are lower columns, and the columns 5 of the prefabricated floor units on the upper layer are upper columns;

[0143] The floor also includes a connection unit connecting the lower column and the upper column, and the connection unit includes a square protrusion 501, a first steel bar 502, a second steel bar 503 and a second through hole 504;

[0144] The end plates 102 of the adjacent steel-prestressed concrete composite flat beams 1 form a raised receiving cavity 505;

[0145] The end plates 102 of four adjacent steel-prestressed concrete composite flat beams 1 located in the center area of the floor form a rectangular raised receiving cavity 505, the end plates 102 of three adjacent steel-prestressed concrete composite flat beams 1 located at the floor boundary form a U-shaped raised receiving cavity 505, and the end plates 102 of two adjacent steel-prestressed concrete composite flat beams 1 located at the four corners of the floor form an L-shaped raised receiving cavity 505;

[0146] A plurality of the first steel bars 502 are vertically fixed to the upper end surface of the lower column, and a plurality of the second steel bars 503 are vertically fixed to the lower end surface of the upper column, and the first steel bars 502 and the second steel bars 503 correspond to each other one by one;

[0147] The steel prestressed concrete composite flat beam 1 is provided with a second through hole 504 penetrating the upper and lower end surfaces. The outer diameter of the first steel bar 502 is smaller than the inner diameter of the second through hole 504. The first steel bar 502 passes through the second through hole 504 and is fixedly connected to the second steel bar 503.

[0148] The first steel bar 502 and the second steel bar 503 may be fixedly connected by welding, or by simultaneously inserting the first steel bar 502 and the second steel bar 503 into a sleeve, squeezing the sleeve to deform, and interlocking the sleeve with the first steel bar 502 and the second steel bar 503, or by injecting some relatively high-strength cementitious material to connect the steel bar and the sleeve.

[0149] The square protrusion 501 is fixed to the lower end surface of the upper column, and the square protrusion 501 is inserted into the protrusion receiving cavity 505;

[0150] The space between the lower column and the upper column is filled with concrete.

[0151] When laying the floor, first place the central flat beam and the side beam on the lower column, and pass the first steel bar 502 through the second through hole 504, then place the bidirectional prestressed prefabricated hollow slab 2 on the wing plate 105, insert the square protrusion 501 of the upper column into the rectangular protrusion accommodating cavity 505 or the U-shaped protrusion accommodating cavity 505 or the L-shaped protrusion accommodating cavity 505, fix the second steel bar 503 through the first steel bar 502, and then pour concrete between the lower column and the upper column, so that the connection and fixation of the lower column and the upper column can be achieved. At the same time, since there is a gap between the first steel bar 502 and the second through hole 504, the concrete flowing into the gap can also fix and limit the central flat beam and the side beam.

[0152] In this embodiment, please refer to Figure 11 , the connection unit further includes a third steel bar 506 and a fourth steel bar 507;

[0153] The third steel bar 506 is vertically fixed to the upper end surface of the lower column, and the third steel bar 506 passes through the upper and lower end surfaces of the bidirectional prestressed prefabricated hollow slab 2;

[0154] The fourth steel bar 507 is vertically fixed to the lower end surface of the upper column, and the third steel bar 506 corresponds to the fourth steel bar 507 one by one;

[0155] The bidirectional prestressed prefabricated hollow slab 2 is provided with a third through hole 508 penetrating the upper and lower end surfaces. The outer diameter of the third steel bar 506 is smaller than the inner diameter of the third through hole 508 . The third steel bar 506 passes through the third through hole 508 and is fixedly connected to the fourth steel bar 507 .

[0156] Here, the fixed connection between the third steel bar 506 and the fourth steel bar 507 can be welded to each other, or the third steel bar 506 and the fourth steel bar 507 can be simultaneously put into the sleeve, and the sleeve is squeezed and deformed to allow the sleeve to bite together with the third steel bar 506 and the fourth steel bar 507, or some relatively high-strength cementitious material is poured to connect the steel bar to the sleeve.

[0157] When the bidirectional prestressed prefabricated hollow slab 2 is placed on the wing plate 105, the third steel bar 506 is passed through the third through hole 508 on the bidirectional prestressed prefabricated hollow slab 2, and the third steel bar 506 and the fourth steel bar 507 are fixedly connected. When the upper concrete is poured between the lower column and the upper column, since there is a gap between the third steel bar 506 and the third through hole 508, the concrete flows into the gap and can also fix and limit the bidirectional prestressed prefabricated hollow slab 2.

[0158] In this embodiment, please refer to Figures 13 to 17 , the wall panel includes a number of insulation sub-wall panels, upper rivets 604, side rivets 605 and steel tenons 606;

[0159] The outer side of the side beam is also provided with a wing plate 105;

[0160] Place the insulation sub-wall panel filling the lower part of the cavity on the wing plate 105 of the lower edge beam, and make the outer wall of the insulation sub-wall panel flush with the outer wall of the wing plate 105 to achieve the flatness of the entire exterior wall;

[0161] Adjacent thermal insulation sub-wall panels are connected by mortise and tenon structures, and a plurality of thermal insulation sub-wall panels are spliced into a rectangular wall panel, and the rectangular wall panel is filled in the rectangular wall panel filling cavity;

[0162] The thermal insulation sub-wall panels each include a concrete layer 601, a thermal insulation layer 602 and an external impact-resistant layer 603;

[0163] The thermal insulation layer 602 is located between the concrete layer 601 and the external impact-resistant layer 603 , and the thermal insulation layer 602 is fixedly connected to the concrete layer 601 and the external impact-resistant layer 603 ;

[0164] The material of the thermal insulation layer 602 is not limited herein and may be a vacuum insulation board layer, a rock wool layer, a graphite polystyrene board layer, an EPS expanded polystyrene board layer, an XPS extruded polystyrene board layer, or a laminated combination of these materials. The external impact-resistant layer 603 is an ultra-high performance concrete layer 601, which can protect the thermal insulation layer 602 and thus increase the life of the thermal insulation layer 602.

[0165] The mortise and tenon structure is a tenon and a mortise, which are respectively provided on the concrete layer 601 of two adjacent insulation sub-wall panels. The cross-section of the tenon and the mortise is limited and can be trapezoidal, arc-shaped, rectangular, triangular, etc.

[0166] The upper rivet 604 is fixed to the lower end surface of the upper side beam, and an upper rivet hole is opened on the upper end surface of the concrete layer 601 of the rectangular wall panel, and the upper rivet 604 is inserted into the upper rivet hole;

[0167] The left and right columns are both provided with side rivets 605, with both ends of the side rivets 605 respectively extending into the filling cavities of the two adjacent rectangular wall panels, and the side rivets 605 are inserted into the concrete layer 601 of the rectangular wall panels;

[0168] The steel tenon 606 is inserted into the concrete layer 601 of the entire vertical insulation sub-wall panel from top to bottom. The upper end surface of the steel tenon 606 extends upward and passes through the upper and lower end surfaces of the wing plate 105 of the upper edge beam, and the upper portion of the steel tenon 606 is fixedly connected to the wing plate 105 of the upper edge beam.

[0169] The heat-insulating sub-wall panel at the bottom of the cavity filled by the rectangular wall panel is fixed to the lower side beam through steel bars;

[0170] The steel bar can be formed integrally with the thermal insulation sub-wall panel. When the steel bar is fixed to the lower side beam, the steel bar can be welded to the side plate 101 of the lower side beam.

[0171] The two ends of the side rivet 605 extend out of the left and right side walls of the left column respectively. The left side of the side rivet 605 is located in the rectangular wall panel filling cavity on the left. When the insulation sub-wall panel in the rectangular wall panel filling cavity on the left and abutting the left column is installed, the left side of the side rivet 605 will be inserted into the insulation sub-wall panel; the right side of the side rivet 605 is located in the rectangular wall panel filling cavity on the right. When installing the insulation sub-wall panel in the rectangular wall panel filling cavity on the right and abutting the left column, the insulation sub-wall panel is put on the right protruding section of the side rivet 605, so as to realize the positioning of the insulation sub-wall panels on the left and right sides of the left column.

[0172] When the rectangular wall panel filling cavity is filled with the insulation sub-wall panel, a steel tenon 606 is passed through each vertical column of insulation sub-wall panels from top to bottom, and the steel tenon 606 is fixedly connected to the upper side beam, which can further enhance the overall performance of the wall.

[0173] In this embodiment, please refer to Figure 18 , the outer wall of the column 5 close to the outside is further provided with a column insulation layer 509, and a column protection layer 510 is further provided outside the column insulation layer 509;

[0174] The outer wall array of the column 5 is provided with a plurality of steel columns, which are inserted into the column insulation layer 509 . The steel columns are used to increase the stability of the connection between the column insulation layer 509 and the outer wall of the column 5 .

[0175] The material of the column insulation layer 509 here can be a vacuum insulation board layer, a rock wool layer, a graphite polystyrene board layer, an EPS expanded polystyrene board layer, an XPS extruded polystyrene board layer, etc., or a layered combination of several materials; the column protection layer 510 is an ultra-high performance concrete layer 601, which can protect the column insulation layer 509, thereby increasing the life of the column insulation layer 509.

[0176] To sum up, in the present invention, the columns 5 of the same floor are first fixed vertically, and the wall panels are fixed between the adjacent columns 5, and then the steel prestressed concrete synthetic flat beams 1 are laid on the columns 5, and the bidirectional prestressed prefabricated hollow slabs 2 are laid between the steel prestressed concrete synthetic flat beams 1, and then the steel tenons 606 are inserted from top to bottom to further fix the steel prestressed concrete synthetic flat beams 1 and the wall panels, and then the transverse steel cables 3 are passed through the left and right and the longitudinal steel cables 4 are passed through the front and back to connect the entire floor as one, and then the square protrusions 501 of the upper column are inserted into the enclosed protrusion accommodating cavity 505, and the first steel bars 502 and the second steel bars 503, the third steel bars 506 and the fourth steel bars 507 are fixed to realize the fixation of the upper and lower columns, and then concrete is poured between the upper and lower columns, and concrete is poured above the steel prestressed concrete synthetic flat beams 1 to realize the connection and fixation of the entire floor and the upper and lower columns, and then the cycle is repeated from bottom to top to realize the construction of the entire floor.

[0177] In another embodiment, the floor further includes a self-insulating wall with windows, which includes a left wall assembly and a right wall assembly, wherein the left wall assembly and the right wall assembly are symmetrically arranged, and the left wall assembly and the right wall assembly are spliced into a rectangular wall panel via a first mortise and tenon structure, and the rectangular wall panel is filled in a rectangular cavity surrounded by an upper crossbeam, a lower crossbeam, a left column, and a right column;

[0178] An upper rivet 604 is fixed to the lower end surface of the upper crossbeam. An upper rivet hole is provided on the upper end surface of the rectangular wall panel, and the upper rivet 604 is inserted into the upper rivet hole.

[0179] Here, a through hole may be opened on the wing plate 105 of the upper crossbeam, and then the upper rivet 604 is set to pass through the through hole and inserted into the upper rivet hole to achieve a fixed connection between the upper rivet 604 and the upper crossbeam;

[0180] Here, the upper rivet and the through hole may be interference fit, so that the solid upper rivet is fixed to the upper crossbeam, or the upper rivet may be welded to the wing plate 105 of the upper crossbeam;

[0181] Side rivets 605 are fixed to the side walls of the left and right columns. Side rivet holes are provided on the left and right side walls of the rectangular wall panel. The side rivet 605 fixed to the left column is inserted into the side rivet hole on the left side of the rectangular wall panel, and the side rivet 605 fixed to the right column is inserted into the side rivet hole on the right side of the rectangular wall panel.

[0182] The left wall assembly includes an upper wall panel, a middle wall panel, a lower wall panel, a second mortise and tenon structure, and a third mortise and tenon structure;

[0183] A first notch is provided at the lower right corner of the upper wall panel, and the length of the lower bottom edge of the upper wall panel is equal to the length of the upper top edge of the middle wall panel;

[0184] The length of the first notch is a, the length of the middle wall panel is b, and 2a>b;

[0185] A second notch is provided at the upper right corner of the lower wall panel, and the length of the upper top edge of the lower wall panel is equal to the length of the lower bottom edge of the middle wall panel;

[0186] The upper wall panel and the middle wall panel are spliced together by a second mortise and tenon structure, and the upper wall panel and the middle wall panel are also spliced together by a third mortise and tenon structure;

[0187] The upper wall panel, middle wall panel and lower wall panel all include a concrete layer 601, an insulation layer 602 and an external impact-resistant layer 603. The insulation layer 602 is located between the concrete layer 601 and the external impact-resistant layer 603, and the insulation layer 602 is fixedly connected to the concrete layer 601 and the external impact-resistant layer 603.

[0188] The second mortise and tenon structure and the third mortise and tenon structure both include a tenon and a mortise groove;

[0189] The tenon and the mortise are matched, and both the tenon and the mortise are provided on the concrete layer 601;

[0190] The lower wall panel is fixedly connected to the lower cross beam via steel bars;

[0191] Steel tenon 606, the lower end surface of the steel tenon 606 observes the concrete layer 601 of the upper wall panel and the concrete layer 601 of the middle wall panel from top to bottom and is inserted into the concrete layer 601 of the lower wall panel, the upper end surface of the steel tenon 606 extends upward and passes through the upper crossbeam, and the upper part of the steel tenon 606 is fixedly connected to the upper crossbeam.

[0192] When installing the self-insulating wall with windows, it is carried out after the columns 5 and the floors are laid. First, insert the side rivet 605 into the side rivet hole of the lower wall panel, and then fix the lower wall panel to the lower beam. First, insert another side rivet 605 into the side rivet hole of the upper wall panel, and then insert the upper rivet 604 into the upper rivet hole of the upper wall panel to fix the upper and lower wall panels. Then insert the middle wall panel between the upper and lower wall panels, and then insert the side rivet 605 into the side rivet hole of the middle wall panel. When a vertical row of wall panels is installed, insert the steel tenon 606 from top to bottom in sequence to further fix the self-insulating wall.

[0193] The above embodiments are merely illustrative of the principles and effects of the present invention and are not intended to limit the present invention. Anyone skilled in the art may modify or alter the above embodiments without departing from the spirit and scope of the present invention. Therefore, all equivalent modifications or alterations made by one of ordinary skill in the art without departing from the spirit and technical principles disclosed herein are intended to be covered by the claims of the present invention.

Claims

1. A self-insulating, prefabricated floor with hidden beams, characterized in that: The floor comprises: Multi-story prefabricated floor units, The multiple layers of prefabricated floor units are arranged in sequence from bottom to top, and the upper and lower adjacent prefabricated floor units are parallel to each other; The assembled floor unit includes a plurality of steel prestressed concrete composite flat beams, a plurality of bidirectional prestressed prefabricated hollow slabs, a plurality of transverse steel cables and a plurality of longitudinal steel cables; The four steel-prestressed concrete composite flat beams enclose a rectangular filling cavity, and the bidirectional prestressed prefabricated hollow slab is laid in the rectangular filling cavity; A plurality of rectangular filled cavities are arranged in a rectangular array to form a whole floor; The transverse steel cables penetrate the left and right side walls of the entire floor in the left and right directions, and connect the bidirectional prestressed prefabricated hollow slab and the steel prestressed concrete composite flat beam of the floor in the left and right directions into one piece; The axes of the longitudinal steel cables and the transverse steel cables are perpendicular to each other, and the longitudinal steel cables penetrate the front and rear side walls of the entire floor in the front-to-rear direction, and connect the bidirectional prestressed prefabricated hollow slab and the steel-prestressed concrete composite flat beam in the front-to-rear direction into one piece; Several pillars, There are columns between adjacent floors, and each rectangular steel prestressed concrete composite flat beam filling the cavity is placed between adjacent columns, and the upper and lower adjacent columns are fixedly connected; The adjacent columns on the same floor are respectively a left column and a right column, the steel prestressed concrete synthetic flat beam between the left column and the right column is respectively an upper steel prestressed concrete synthetic flat beam and a lower steel prestressed concrete synthetic flat beam, and the left column, the right column, the upper steel prestressed concrete synthetic flat beam and the lower steel prestressed concrete synthetic flat beam form a rectangular wall panel to fill the cavity; Several wall panels, The wall panel is filled in the rectangular wall panel filling cavity, and the wall panel is fixedly connected to the left column, the right column, the upper steel prestressed concrete composite flat beam and the lower steel prestressed concrete composite flat beam; The steel-prestressed concrete composite flat beam comprises an upper cover plate, two side plates, two end plates, prestressed steel cables, a connecting plate and a wing plate; The two side panels and the two end panels form a rectangular cavity, the rectangular cavity is filled with concrete, and upper cover panels are fixedly installed on the top surfaces of the side panels and the end panels, and the upper cover panel is used to close the upper opening of the rectangular cavity, the length direction of the side panels is the length direction of the steel prestressed concrete composite flat beam, the prestressed steel cable is located at the lower part of the rectangular cavity, the prestressed steel cable is fixedly connected between the two end panels, a plurality of the connecting plates are fixedly connected between the two side panels, and the connecting plates are located above the prestressed steel cables, the wing panels are fixedly connected to the side panels, the bottom end surfaces of the wing panels are flush with the bottom end surfaces of the side panels, and the bidirectional prestressed prefabricated hollow panels are placed on the wing panels; There are two wing plates in each rectangular filling cavity, and the two wing plates are respectively located on opposite sides of the rectangular filling cavity; the columns of the prefabricated floor unit on the lower layer are lower columns, and the columns of the prefabricated floor unit on the upper layer are upper columns; The floor slab further includes a connecting unit connecting the lower column and the upper column, wherein the connecting unit includes a square protrusion, a first steel bar, a second steel bar, and a second through hole; The end plates of the adjacent steel-prestressed concrete composite flat beams form a raised receiving cavity; a plurality of the first steel bars are vertically fixed to the upper end surface of the lower column, and a plurality of the second steel bars are vertically fixed to the lower end surface of the upper column, with the first steel bars corresponding to the second steel bars one by one; The steel-prestressed concrete composite flat beam is provided with a second through hole extending through the upper and lower end surfaces. The outer diameter of the first steel bar is smaller than the inner diameter of the second through hole. The first steel bar passes through the second through hole and is fixedly connected to the second steel bar. The square protrusion is fixedly connected to the lower end surface of the upper column and is inserted into the protrusion receiving cavity. The space between the lower column and the upper column is filled with concrete.

2. The prefabricated self-insulating hidden beam floor according to claim 1, characterized in that: The bidirectional prestressed prefabricated hollow slab comprises a concrete body, a transverse prestressed hollow tube, a transverse prestressed steel hidden beam, a longitudinal prestressed steel cable, a first through hole, a first steel plate and a second steel plate; The transverse prestressed hollow tube is embedded in the concrete body along the width direction of the concrete body, and the axis of the transverse prestressed hollow tube is perpendicular to the left side wall of the concrete body; The transverse prestressed steel bar hidden beam is a hollow rectangle formed by steel bars, the transverse prestressed hollow tube is located in the hollow rectangle of the transverse prestressed steel bar hidden beam, and the transverse prestressed steel bar hidden beam is embedded in the concrete body along the width direction of the concrete body; The longitudinal prestressed steel cables are embedded in the concrete body along the length direction of the concrete body, and the axes of the longitudinal prestressed steel cables are perpendicular to the front side wall of the concrete body, and the transverse prestressed hollow tubes are perpendicular to the longitudinal prestressed steel cables; The first steel plate is embedded in the left wall of the concrete body, and the second steel plate is embedded in the right wall of the concrete body; The first steel plate is fixedly connected to the left end surface of the transverse prestressed hollow tube, and the second steel plate is fixedly connected to the right end surface of the transverse prestressed hollow tube; The first through hole passes through the front and rear side walls of the concrete body; The transverse steel cables pass through the transverse prestressed hollow tubes and are used to connect the bidirectional prestressed prefabricated hollow slabs on the same floor in the left and right directions; The longitudinal steel cables pass through the first through holes and are used to connect the bidirectional prestressed prefabricated hollow slabs on the same floor in the front-to-back direction.

3. The self-insulating, prefabricated floor with hidden beams according to claim 2, characterized in that: The bottom end surface of the concrete body is provided with a notch along its width direction that matches the wing plate. The bottom end surface of the concrete body is flush with the bottom end surface of the wing plate. The concrete body is placed between the two wing plates in the rectangular filling cavity. A plurality of negative bending moment steel bars are fixedly connected in parallel above the notch of the concrete body, and the negative bending moment steel bars are fixedly connected to the upper cover plate of the steel prestressed concrete synthetic flat beam.

4. The self-insulating, prefabricated floor with hidden beams according to claim 2, characterized in that: The height of the steel prestressed concrete composite flat beam is lower than that of the concrete body. Concrete is filled above the steel prestressed concrete composite flat beam, and the upper end surface of the solidified concrete is flush with the upper end surface of the concrete body.

5. The self-insulating, prefabricated floor with hidden beams according to claim 4, characterized in that: The front and rear side walls of the concrete body are both provided with arc grooves running through the left and right side walls. The arc grooves of adjacent concrete bodies are connected to form a through groove, and the arc grooves are connected to the area above the upper end surface of the steel prestressed concrete composite flat beam.

6. The self-insulating, prefabricated, hidden beam floor according to claim 2, characterized in that: The steel-prestressed concrete composite flat beam is divided into edge beams located at the boundaries of the floors and a central flat beam located at the center area of the floors; The transverse steel cable passes through the side beam on the left side of the floor, the transverse prestressed hollow tube of the bidirectional prestressed prefabricated hollow slab in the first rectangular filling cavity, the first longitudinal center flat beam, the transverse prestressed hollow tube of the bidirectional prestressed prefabricated hollow slab in the second rectangular filling cavity, the second longitudinal center flat beam, ..., and the side beam on the right side of the floor; One end of the transverse steel cable is fixedly connected to the side beam on the left side, and the other end of the transverse steel cable is fixedly connected to the side beam on the right side; The longitudinal steel cables pass through the edge beams at the front side of the floor, the first through hole of the bidirectional prestressed prefabricated hollow slab in the first rectangular filling cavity, the first transverse central flat beam, the first through hole of the bidirectional prestressed prefabricated hollow slab in the second rectangular filling cavity, the second transverse central flat beam, ..., and the edge beams at the rear side of the floor; One end of the longitudinal steel cable is fixedly connected to the side beam at the front side of the floor, and the other end of the longitudinal steel cable is fixedly connected to the side beam at the rear side of the floor.

7. The prefabricated self-insulating hidden beam floor according to claim 1, characterized in that: The connection unit further includes a third steel bar and a fourth steel bar; The third steel bar is vertically fixed to the upper end surface of the lower column, and the third steel bar passes through the upper and lower end surfaces of the bidirectional prestressed prefabricated hollow slab; The fourth steel bar is vertically fixed to the lower end surface of the upper column, and the third steel bar corresponds to the fourth steel bar one by one; The bidirectional prestressed prefabricated hollow slab is provided with a third through hole penetrating the upper and lower end surfaces. The outer diameter of the third steel bar is smaller than the inner diameter of the third through hole. The third steel bar passes through the third through hole and is fixedly connected to the fourth steel bar.

8. The prefabricated self-insulating hidden beam floor according to claim 6, characterized in that: The wall panel includes a plurality of thermal insulation sub-wall panels, upper rivets, side rivets and steel tenons; The outer side of the side beam is also provided with a wing plate; Adjacent thermal insulation sub-wall panels are connected by mortise and tenon structures, and a plurality of thermal insulation sub-wall panels are spliced into a rectangular wall panel, and the rectangular wall panel is filled in the rectangular wall panel filling cavity; The thermal insulation sub-wall panels all include a concrete layer, a thermal insulation layer and an external impact-resistant layer; The thermal insulation layer is located between the concrete layer and the external impact-resistant layer, and the thermal insulation layer is fixedly connected to the concrete layer and the external impact-resistant layer; The upper rivet is fixed to the lower end surface of the upper side beam, and an upper rivet hole is opened on the upper end surface of the concrete layer of the rectangular wall panel, and the upper rivet is inserted into the upper rivet hole; The left column and the right column are both provided with side rivets, and the two ends of the side rivets are respectively inserted into the filling cavities of the two adjacent rectangular wall panels, and the side rivets are inserted into the concrete layer of the rectangular wall panels; The steel tenon is inserted into the concrete layer of the entire vertical insulation sub-wall panel from top to bottom, the upper end surface of the steel tenon extends upward and passes through the upper and lower end surfaces of the wing plate of the upper side beam, and the upper portion of the steel tenon is fixedly connected to the wing plate of the upper side beam; The heat-insulating sub-wall panel at the lower part of the cavity filled by the rectangular wall panel is fixed on the lower side beam through steel bars.

Images