Prefabricated Qirschner plate group and floor system structure

Abstract

The invention relates to the field of clean workshop buildings, and discloses a prefabricated Qirschner plate group and a floor system structure. The prefabricated Qirschner plate group comprises a prefabricated plate and a to-be-assembled cylinder, the prefabricated slab comprises a floor slab body and a plurality of fixing assemblies. The floor body comprises a first surface and a second surface which are oppositely arranged in the first direction. The fixing assembly comprises a fixing cylinder and a pre-embedded fixing part; the fixing cylinders penetrate through the floor body in the first direction to form ventilation holes. The pre-embedded fixing piece and the fixing cylinder both protrude out of the first surface; the fixing assembly and the floor body are poured into an integrated structure in a factory. Each fixing assembly is used for being correspondingly connected with one to-be-assembled cylinder; the to-be-assembled cylinder comprises a cylinder body and a fixed lifting lug fixed on the outer side surface of the cylinder body; the cylinder body is used for being arranged on the outer side of a fixing cylinder in a sleeving mode and connected with an embedded fixing piece through the fixing lifting lugs. When concrete is poured on the prefabricated plate, concrete grout cannot enter the vent holes of the prefabricated plate, and the cleanliness of the hole walls of the vent holes is guaranteed to meet the requirement of a clean workshop.

Description

Technical Field

[0001] This application relates to the technical field of clean workshop construction, and particularly relates to a prefabricated cheese plate group and a floor structure. Background Art

[0002] High-precision electronic workshops have high requirements for floor vibration control and strict requirements for air cleanliness in the production environment. The core production layer generally adopts a slab-column structure formed by cheese plates, which not only improves the stiffness of the floor but also realizes the function of vertical laminar flow of purified air from top to bottom, meeting the high anti-microvibration requirements and high cleanliness requirements of electronic workshops.

[0003] High-precision industries are characterized by high investment costs and rapid technological iterations, so they have high requirements for the construction period. At present, domestic high-precision electronic workshops generally adopt the cast-in-place process, which requires on-site formwork support, steel bar binding, pouring and curing. There are problems such as great difficulty in on-site construction operations, difficult quality control, long construction period, and high labor demand. Summary of the Invention

[0004] This application discloses a prefabricated cheese plate group and a floor structure for simplifying on-site construction procedures.

[0005] To achieve the above object, this application provides the following technical solutions:

[0006] In a first aspect, an embodiment of this application provides a prefabricated cheese plate group, including: a precast slab and a to-be-installed cylinder;

[0007] The precast slab includes a floor slab body and a plurality of fixing components;

[0008] The floor slab body includes a first surface and a second surface oppositely arranged in a first direction;

[0009] The fixing component includes a fixing cylinder and a pre-embedded fixing part; the fixing cylinder penetrates through the floor slab body in the first direction to form a ventilation hole; both the pre-embedded fixing part and the fixing cylinder protrude from the first surface; the fixing component and the floor slab body are cast into an integral structure in the factory; each fixing component is used to correspondingly connect one to-be-installed cylinder;

[0010] The to-be-installed cylinder includes a cylinder body and a fixing lug fixed on the outer side surface of the cylinder body; the cylinder body is used to be sleeved outside the fixing cylinder and connected to the pre-embedded fixing part through the fixing lug.

[0011] The prefabricated Qishi plate group provided by the embodiments of the present application is processed in a prefabrication factory, transported to the construction site by transportation equipment, and then assembled into an integral floor structure on site, realizing the prefabricated structure of the electronic factory building. Compared with the on-site construction and casting of floors in the prior art, the on-site support, formwork, and casting construction are reduced, greatly simplifying the construction process, and enabling the early delivery and early production of the electronic factory building.

[0012] For convenient transportation, the prefabricated Qishi plate group provided by the embodiments of the present application divides the traditional Qishi tube into two parts. The first part is the fixed tube, which is cast into an integral structure with the floor slab body in the prefabrication factory. The second part is the to-be-installed tube, which is assembled with the fixed tube at the construction site. The fixed tube protrudes from the first surface of the floor slab body, facilitating the installation and positioning of the to-be-installed tube without the need for on-site re-measurement and positioning.

[0013] At the same time, after installing the to-be-installed tube, since the to-be-installed tube is connected to the embedded fixing parts, and both the embedded fixing parts and the fixed tube are integrally pre-cast structures with the floor slab body, the to-be-installed tube and the fixed tube are relatively fixed. At this time, when pouring concrete, the to-be-installed tube will not float relative to the fixed tube under the action of buoyancy, effectively preventing the upper to-be-installed tube from floating and deforming, and avoiding concrete leakage in the fixed tube and the to-be-installed tube. That is to say, when pouring concrete on the precast slab, the concrete slurry will not enter the ventilation holes of the precast slab, ensuring that the cleanliness of the hole walls of the ventilation holes meets the requirements of the clean factory building.

[0014] In some embodiments, the embedded fixing parts include an embedded part, an embedded plate, and a connecting plate; the embedded plate includes a first surface and a second surface arranged opposite to each other along the first direction. The first surface is connected to the connecting plate, and the second surface is connected to the embedded part; the first surface is flush with the first surface.

[0015] There is a first gap between the connecting plate and the outer wall surface of the fixed tube, and the first gap is greater than or equal to the wall thickness of the tube body.

[0016] In some embodiments, a first stirrup group and a second stirrup group are arranged in the floor slab body. The first stirrup group includes a plurality of stirrups arranged at intervals along the second direction, and the second stirrup group includes a plurality of stirrups arranged at intervals along the third direction; all the stirrups protrude from the first surface.

[0017] The orthographic projection of the stirrup on the floor slab body does not overlap with the orthographic projection of the ventilation hole on the floor slab body.

[0018] The orthographic projection of the stirrup on the floor slab body does not overlap with the orthographic projection of the embedded plate on the floor slab body.

[0019] In some embodiments, the fixing assembly includes at least one group of embedded fixing parts symmetrically arranged along the radial direction of the fixing tube; the arrangement directions of the embedded fixing parts on both sides of the symmetrical arrangement have angles with the second direction and the third direction.

[0020] In some embodiments, the angle between the arrangement direction of the embedded fixing members on both sides symmetrically arranged and the second direction and the third direction is 45°.

[0021] In some embodiments, the fixed ear is fixed to the first end of the tube body, and the first end of the tube body is used to be sleeved on the outside of the fixed tube.

[0022] In some embodiments, the fixed ear and the tube body are an integral structure.

[0023] In some embodiments, a lug is provided on the side wall of the floor body close to the second surface, and the lug includes a third surface and a fourth surface arranged opposite to each other along the first direction; along the first direction, the third surface is located between the first surface and the second surface, and the fourth surface is located in the same plane as the second surface.

[0024] In some embodiments, the ear also includes a fifth surface; the fifth surface is connected to the third surface and is also used to connect to the fourth surface; the ear is provided with an L-shaped edge banding member; the edge banding member covers the fifth surface and a partial area of ​​the ear facing away from the third surface; the edge banding member does not protrude from the third surface.

[0025] In some embodiments, the ear further comprises a fifth surface, a sixth surface and a seventh surface connected in sequence; the fifth surface is connected to the third surface at a side away from the sixth surface, and the seventh surface is connected to the fourth surface at a side away from the sixth surface; wherein: the distance between the sixth surface and the third surface is smaller than the distance between the fourth surface and the third surface, and the distance between the seventh surface and the side wall of the floor slab body is smaller than the distance between the fifth surface and the side wall of the floor slab body;

[0026] The ear is provided with an edge sealing member; the edge sealing member covers the fifth surface, the sixth surface and the seventh surface; the edge sealing member does not protrude from the third surface, and the side of the edge sealing member facing away from the sixth surface is flush with the fourth surface.

[0027] In the second aspect, an embodiment of the present application also provides a floor structure, comprising a plurality of prefabricated Qishi board groups as described in any one of the first aspects; the joint between two adjacent prefabricated boards forms an inter-board cast-in-place section; the prefabricated boards are laid with a board-overlapping cast-in-place layer, which is connected to the inter-board cast-in-place section.

[0028] In a third aspect, an embodiment of the present application further provides a floor slab structure, which includes a plurality of precast Qishi board groups provided in some embodiments of the first aspect; a cast-in-place section between slabs is formed at the joint of two adjacent precast slabs; a cast-in-place layer is laid on the precast slab and is connected to the cast-in-place section between slabs;

[0029] The cast-in-place layer on the slab includes a first integrated steel cage and a second integrated steel cage; the first integrated steel cage extends along the second direction and is connected to the first stirrup group, and the second integrated steel cage extends along the third direction and is connected to the second stirrup group;

[0030] The first integrated steel cage and / or the second integrated steel cage includes high-leg stirrups and low-leg stirrups arranged alternately along its extending direction, one high-leg stirrup is correspondingly connected to one stirrup, and one low-leg stirrup is correspondingly connected to one stirrup;

[0031] The low-leg stirrup abuts against the floor slab body; there is a gap between the high-leg stirrup and the floor slab body.

[0032] In some embodiments, the cast-in-place layer on the slab further includes a first post-inserted waist bar, a second post-inserted waist bar, and a third post-inserted waist bar; the first post-inserted waist bar is used to be inserted into the first integrated steel cage and connected to the first stirrup group after the first integrated steel cage is fixed to the first stirrup group;

[0033] The second post-inserted waist bar is used to be inserted into the second integrated steel cage and connected to the second stirrup group after the second integrated steel cage is fixed to the second stirrup group;

[0034] The third post-inserted waist bar is used to be inserted into the second integrated steel cage and connected to the second integrated steel cage after the second integrated steel cage is fixed to the second stirrup group;

[0035] The distance between the third post-inserted waist bar and the floor slab body is greater than the distance between the second post-inserted waist bar and the floor slab body.

[0036] In a fourth aspect, an embodiment of the present application further provides a floor slab structure, which includes a plurality of precast Qishi board groups provided in some embodiments of the first aspect; a cast-in-place section between slabs is formed at the joint of two adjacent precast slabs; a cast-in-place layer is laid on the precast slab and is connected to the cast-in-place section between slabs;

[0037] The cast-in-place section between slabs includes a grout-blocking strip, the grout-blocking strip contacts the ear surfaces of two adjacent precast slabs, and at least covers the joint formed by two adjacent precast slabs.

[0038] In a fifth aspect, an embodiment of the present application further provides a floor slab structure, including a plurality of precast Qishi board groups as provided in some embodiments of the first aspect; a cast-in-situ section between slabs is formed at the joint of two adjacent precast boards; a cast-in-situ layer is laid on the precast board and is connected to the cast-in-situ section between slabs;

[0039] A caulking strip is clamped on the side of the joint of two adjacent precast boards away from the cast-in-situ section between slabs. The caulking strip contacts the ear surfaces of two adjacent precast boards and covers at least the joint formed by two adjacent precast boards. Description of the Drawings

[0040] Figure 1 is a three-dimensional perspective view of a precast board in a precast Qishi board group provided by an embodiment of the present application;

[0041] Figure 2 is a schematic structural view of a to-be-installed cylinder in a precast Qishi board group provided by an embodiment of the present application;

[0042] Figure 3 is a top view of a precast board in a precast Qishi board group provided by an embodiment of the present application;

[0043] Figure 4 is an enlarged view of a fixing component in a precast Qishi board group provided by an embodiment of the present application;

[0044] Figure 5 is an enlarged view of a fixing component in a precast Qishi board group provided by an embodiment of the present application after assembling the to-be-installed cylinder;

[0045] Figure 6 is a cross-sectional view of a fixing component in a precast Qishi board group provided by an embodiment of the present application;

[0046] Figure 7 is a cross-sectional view of a to-be-installed cylinder in a precast Qishi board group provided by an embodiment of the present application;

[0047] Figure 8 is a cross-sectional view of a fixing component in a precast Qishi board group provided by an embodiment of the present application after assembling the to-be-installed cylinder;

[0048] Figure 9 and Figure 10 is a schematic structural view of an embedded fixing part in a precast Qishi board group provided by an embodiment of the present application;

[0049] Figure 11 is a top view of a precast board in another precast Qishi board group provided by an embodiment of the present application;

[0050] Figure 12 is a schematic structural view of an ear of a precast board in a precast Qishi board group provided by an embodiment of the present application;

[0051] Figure 13 Schematic diagram of the lug structure of the precast slab in another precast Qishi slab group provided by the embodiment of the present application;

[0052] Figure 14 Top view of the precast slab in another precast Qishi slab group provided by the embodiment of the present application;

[0053] Figure 15 Schematic diagram of the structure at the joint of precast slabs in a floor slab structure provided by the embodiment of the present application;

[0054] Figure 16 Schematic diagram of the structure at the joint of precast slabs in another floor slab structure provided by the embodiment of the present application;

[0055] Figure 17 Schematic diagram of the layout of the grout-blocking strip in a floor slab structure provided by the embodiment of the present application;

[0056] Figure 18 Schematic diagram of the structure of the first integrated steel cage in a floor slab structure provided by the embodiment of the present application;

[0057] Figure 19 Schematic diagram of the structure of the second integrated steel cage in a floor slab structure provided by the embodiment of the present application;

[0058] Figure 20 Schematic diagram of the structure of the hidden beam of the precast slab in a floor slab structure provided by the embodiment of the present application;

[0059] Figure 21 Assembly drawing of the first integrated steel cage and the hidden beam of the precast slab in a floor slab structure provided by the embodiment of the present application;

[0060] Figure 22 Assembly drawing of the second integrated steel cage and the hidden beam of the precast slab in a floor slab structure provided by the embodiment of the present application;

[0061] Figure 23 Assembly drawing of the high-leg stirrup and the hidden beam stirrup of the precast slab in a floor slab structure provided by the embodiment of the present application;

[0062] Figure 24 Assembly drawing of the low-leg stirrup and the hidden beam stirrup of the precast slab in a floor slab structure provided by the embodiment of the present application;

[0063] Icons: 100 - precast slab; 200 - cylinder to be installed; 300 - grout blocking strip; 400 - joint sealing strip; 500 - first integrated steel reinforcement cage; 600 - second integrated steel reinforcement cage; 700 - first post - inserted side reinforcement; 800 - second post - inserted side reinforcement; 900 - third post - inserted side reinforcement; 101 - joint; 110 - floor slab body; 120 - fixing component; 110a - first surface; 110b - second surface; 110c - ventilation hole; 110d - side wall; 111 - first stirrup group; 112 - second stirrup group; 113 - lug; 114 - edge sealing member; 113a - third surface; 113b - fourth surface; 113c - fifth surface; 113d - sixth surface; 113e - seventh surface; 1111 - stirrup; 1112 - side reinforcement; 1113 - longitudinal reinforcement; 121 - fixing cylinder; 122 - embedded fixing piece; 1221 - embedded part; 1222 - embedded plate; 1223 - connecting plate; 1222a - first face; 1222b - second face; 210 - cylinder body; 220 - fixing lug; 230 - nail; 510 - high - limb stirrup; 520 - low - limb stirrup; 530 - longitudinal reinforcement; 540 - side reinforcement; 550 - tie bar; 610 - high - limb stirrup; 620 - low - limb stirrup; 630 - longitudinal reinforcement; 910 - post - tied tie bar. Detailed implementation mode

[0064] Next, the technical solutions in the embodiments of the present application will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative efforts belong to the scope of protection of the present application. Among them, in the description of the embodiments of the present application, unless otherwise specified, " / " means "or". For example, A / B can mean A or B; the "and / or" in the text is only a description of the association relationship of the associated objects, indicating that there can be three relationships. For example, A and / or B can mean: A exists alone, A and B exist simultaneously, and B exists alone. In addition, in the description of the embodiments of the present application, "a plurality of" means two or more than two.

[0065] Hereinafter, the terms "first" and "second" are only used for descriptive purposes and cannot be understood as implying or suggesting relative importance or implicitly indicating the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include one or more of such features. In the description of the embodiments of the present application, unless otherwise specified, the meaning of "a plurality of" is two or more than two.

[0066] Such as Figures 1 - 8As shown in the figure, an embodiment of the present application provides a prefabricated Qishi board group, including: a prefabricated board 100 and a cylinder to be installed 200; the prefabricated board 100 includes a floor slab body 110 and a plurality of fixing components 120; the floor slab body 110 includes a first surface 110a and a second surface 110b that are oppositely arranged in a first direction. The first direction is the thickness direction of the prefabricated board 100, that is Figure 1 the Z direction in

[0067] The fixing component 120 includes a fixing cylinder 121 and an embedded fixing part 122; the fixing cylinder 121 penetrates through the floor slab body 110 in the first direction to form a ventilation hole 110c. Both the embedded fixing part 122 and the fixing cylinder 121 protrude from the first surface 110a; the fixing component 120 and the floor slab body 110 are cast into an integral structure in the factory; each fixing component 120 is used to correspondingly connect a cylinder 200 to be installed; as Figure 2 shown, the cylinder 200 to be installed includes a cylinder body 210 and a fixing lug 220 fixed on the outer side surface of the cylinder body 210; the cylinder body 210 is used to be sleeved outside the fixing cylinder 121 and connected to the embedded fixing part 122 through the fixing lug 220.

[0068] As Figure 6 shown, the floor slab body 110 includes a first surface 110a (such as the upper surface or the top surface) and a second surface 110b (such as the lower surface or the bottom surface) in the thickness direction, and the fixing cylinder 121 penetrates through the floor slab body 110 from the first surface 110a to the second surface 110b. The first end of the fixing cylinder 121 protrudes from the first surface 110a, which is convenient for the positioning and installation of the cylinder 200 to be installed. The second end of the fixing cylinder 121 is flush with the second surface 110b. The embedded fixing part 122 is embedded into the interior of the floor slab body 110 from the first surface 110a to the second surface 110b. The first end of the embedded fixing part 122 protrudes from the first surface 110a, which is convenient for the fixing of the cylinder 200 to be installed. As Figure 7 shown, the cylinder 200 to be installed includes a cylinder body 210 and a fixing lug 220. The cylinder 200 to be installed is sleeved with the fixing cylinder 121 through the cylinder body 210 and connected to the embedded fixing part 122 through the fixing lug 220, and finally the installation and fixing of the cylinder 200 to be installed are realized. The fixing lug 220 is fixed on the outer peripheral surface of the cylinder body 210. There is no need for on-site assembly. It only needs to sleeve the cylinder 200 to be installed outside the fixing cylinder 121 and connect the fixing lug 220 and the embedded fixing part 122. The connection method is simple, reliable and easy to operate, as Figure 8 shown.

[0069] In one embodiment, the wall thickness of the cylinder 200 to be installed is the same as that of the fixing cylinder 121. The cylinder 200 to be installed needs to be sleeved outside the fixing cylinder 121. Therefore, the inner diameter of the cylinder 200 to be installed should be two wall thicknesses larger than the inner diameter of the fixing cylinder 121.

[0070] The prefabricated Qishi board group provided by the embodiments of the present application is processed in a prefabrication factory, transported to the construction site by transportation equipment, and then assembled into an integral floor structure on site, realizing the assembled structure of the electronic factory building. Compared with the on-site construction and casting of the floor slab in the prior art, the on-site casting construction is reduced, the construction process is greatly simplified, and the early delivery and early production of the electronic factory building can be achieved.

[0071] For convenient transportation, the prefabricated Qishi board group provided by the embodiments of the present application divides the traditional Qishi tube into two parts. The first part is the fixed tube 121, and the fixed tube 121 and the floor slab body 110 are cast into an integral structure in the prefabrication factory; the second part is the to-be-installed tube 200, and the to-be-installed tube 200 is assembled with the fixed tube 121 at the construction site. The fixed tube 121 protrudes from the first surface 110a of the floor slab body 110, which is convenient for the installation and positioning of the to-be-installed tube 200, and there is no need for on-site re-measurement and positioning.

[0072] At the same time, after the to-be-installed tube 200 is installed, since the to-be-installed tube 200 is connected to the embedded fixing part 122, and both the embedded fixing part 122 and the fixed tube 121 are integrally pre-cast with the floor slab body 110, the to-be-installed tube 200 and the fixed tube 121 are relatively fixed. This connection method has a simple structure, is convenient for construction, and has high connection reliability. At this time, when pouring concrete, the to-be-installed tube 200 will not float relative to the fixed tube 121 under the action of buoyancy, which can effectively prevent the upper to-be-installed tube 200 from floating and deforming, and avoid concrete leakage in the fixed tube 121 and the to-be-installed tube 200. That is to say, when pouring concrete on the precast slab 100, the concrete slurry will not enter the ventilation holes 110c of the precast slab 100, ensuring that the cleanliness of the hole walls of the ventilation holes 110c meets the requirements of the clean factory building.

[0073] In some embodiments, as Figure 6 shown, the embedded fixing part 122 and the fixed tube 121 are of a split structure and are cast into an integral structure with the floor slab body 110 in the prefabrication factory. Using a split structure to set the embedded fixing part 122 and the fixed tube 121 is convenient for making the two structural parts with different materials.

[0074] In some embodiments, as Figure 7 shown, the fixed lug 220 is fixed to the first end of the tube body 210, and the first end of the tube body 210 is used to sleeved outside the fixed tube 121.

[0075] The fixed lug 220 is fixed to the end of the tube body 210 sleeved on the fixed tube 121, that is, the lower end of the tube body 210, which can avoid the embedded fixing part 122 protruding too high from the first surface 110a and affecting the handling and transportation of the precast slab 100. And when the fixed lug 220 is connected to the embedded fixing part 122, the connection position is close to the bottom of the to-be-installed tube 200, improving the force stability of the entire to-be-installed tube 200.

[0076] As shown Figure 8 in the figure, the cylinder to be installed 200 is sleeved on the fixed cylinder 121, and the lower end surface of the cylinder to be installed 200 contacts the first surface 110a of the floor slab body 110. In some embodiments, the cylinder to be installed 200 is sealingly sleeved on the fixed cylinder 121 to prevent the concrete slurry from entering the inside of the fixed cylinder 121 through the gap between the cylinder to be installed 200 and the fixed cylinder 121 during concrete pouring and polluting the ventilation hole 110c. In one embodiment, the cylinder to be installed 200 and the fixed cylinder 121 are in interference fit. In another embodiment, the cylinder to be installed 200 and the fixed cylinder 121 are in interference fit through an elastic seal.

[0077] In some embodiments, the fixed lug 220 and the cylinder body 210 are of an integral structure. The fixed lug 220 and the cylinder body 210 are designed integrally, reducing the risk of loosening or falling off of the connection points that may exist in the split structure. This design makes the cylinder to be installed 200 more firm and can better withstand the force exerted on the cylinder to be installed 200 by the embedded fixture 122 during concrete pouring. Moreover, the integral structure can ensure that the force is transmitted more directly and stably from the fixed lug 220 to the cylinder body 210.

[0078] In some embodiments, the fixed lug 220 and the cylinder body 210 are made of the same material, which is convenient for the processing and manufacturing of the cylinder to be installed 200.

[0079] In some embodiments, the fixed cylinder 121 and the cylinder to be installed 200 are made of epoxy resin. Epoxy resin is a thermosetting resin with convenient curing, strong adhesion, low shrinkage rate, strong chemical and dimensional stability, and can prevent the dust generation on the wall of the ventilation hole 110c for a long time and affect the cleanliness of the electronic factory building. Since the electronic factory building has requirements for cleanliness and control requirements for the particle size in the air, setting the epoxy resin fixed cylinder 121 and the cylinder to be installed 200 on the surface of the concrete can prevent the dust generation on the concrete surface.

[0080] In some embodiments, as Figure 8 and Figure 9 shown in the figure, the embedded fixture 122 includes an embedded part 1221, an embedded plate 1222 and a connecting plate 1223; the embedded plate 1222 includes a first surface 1222a and a second surface 1222b arranged oppositely in the first direction, the first surface 1222a is connected to the connecting plate 1223, and the second surface 1222b is connected to the embedded part 1221; the first surface 1222a is flush with the first surface 110a; there is a first gap between the connecting plate 1223 and the outer wall surface of the fixed cylinder 121, and the first gap is greater than or equal to the wall thickness of the cylinder body 210.

[0081] In one embodiment, the embedded fixture 122 includes an embedded portion 1221, an embedded plate 1222, and a connecting plate 1223. The embedded portion 1221 is an anchor bar to avoid affecting the layout of the steel bars inside the floor slab body 110. The embedded plate 1222 is a plate such as a steel plate. In the thickness direction, the embedded plate 1222 includes a first surface 1222a (such as the upper surface) and a second surface 1222b (such as the lower surface), and the first surface 1222a of the embedded plate 1222 is flush with the first surface 110a of the floor slab body 110. That is, the entire embedded plate 1222 is embedded inside the floor slab body 110 to improve the stability of the embedded plate 1222. The connecting plate 1223 is a plate such as a steel plate. In one embodiment, as Figure 10 shown, the connecting plate 1223 is perpendicularly connected to the embedded plate 1222 at the middle position of the embedded plate 1222. Referring to Figure 8 , the plane where the connecting plate 1223 is located passes through the axis of the fixed cylinder 121, and for the convenience of installing the cylinder to be installed 200, there is a first gap between the connecting plate 1223 and the fixed cylinder 121. The size of the first gap is at least equal to the wall thickness of the cylinder body 210 to ensure that the cylinder body 210 can be in surface contact with the floor slab body 110. In another embodiment, as Figure 6 shown, there is a second gap between the embedded plate 1222 and the fixed cylinder 121.

[0082] In one embodiment, as Figure 8 shown, the fixed lug 220 and the connecting plate 1223 are fixedly connected by a nail 230.

[0083] In some embodiments, as Figure 3 shown, a first stirrup group 111 and a second stirrup group 112 are arranged in the floor slab body 110. The first stirrup group 111 includes a plurality of stirrups arranged at intervals along the second direction, i.e., the X direction, and the second stirrup group 112 includes a plurality of stirrups arranged at intervals along the third direction, i.e., the Y direction; all stirrups protrude from the first surface 110a; the first direction, the second direction, and the third direction are perpendicular to each other in pairs; the orthographic projections of the stirrups on the floor slab body 110 do not overlap with the orthographic projection of the ventilation hole 110c on the floor slab body 110; the orthographic projections of the stirrups on the floor slab body 110 do not overlap with the orthographic projection of the embedded plate 1222 on the floor slab body 110.

[0084] In one embodiment, as Figure 3As shown, the floor slab body 110 is provided with a plurality of stirrups sequentially arranged at intervals along the X direction, i.e., the slab span direction, and all the stirrups sequentially arranged along the X direction form a first stirrup group 111. The floor slab body 110 includes a plurality of first stirrup groups 111, and all the first stirrup groups 111 are spaced apart along the Y direction. The floor slab body 110 is also provided with a plurality of stirrups sequentially arranged at intervals along the Y direction, i.e., the slab width direction, and all the stirrups sequentially arranged along the Y direction form a second stirrup group 112. The floor slab body 110 includes a plurality of second stirrup groups 112, and all the second stirrup groups 112 are spaced apart along the X direction. The fixing assembly 120 is located at a blank space formed by the intersection of the plurality of first stirrup groups 111 and the plurality of second stirrup groups 112 on the floor slab body 110.

[0085] In some embodiments, all stirrups protrude from the first surface 110a of the floor slab body 110 at the same height.

[0086] It should be noted that the first stirrup group 111, the floor body 110 and the steel bars inside the floor body 110 form a first hidden beam extending along the X direction, i.e., the slab span direction. The second stirrup group 112, the floor body 110 and the steel bars inside the floor body 110 form a second hidden beam extending along the Y direction, i.e., the slab width direction.

[0087] It should also be noted that all the stirrups in the first stirrup group 111 and the second stirrup group 112 are not connected to waist reinforcement on the side facing away from the floor slab body 110, that is, no waist reinforcement is arranged above the first surface 110a of the floor slab body 110 to facilitate the installation of the steel cage before on-site pouring.

[0088] In some embodiments, the fixing assembly 120 includes at least one set of embedded fixings 122 symmetrically arranged along the radial direction of the fixing tube 121; the arrangement direction of the symmetrically arranged embedded fixings 122 on both sides has an angle with the second direction and the third direction. Since the second direction is perpendicular to the third direction, the blank area formed by the first hidden beam and the second hidden beam is a rectangle. In order to avoid interference between the embedded fixings 122 and the stirrups, the embedded fixings 122 are arranged at the corners of the rectangular area.

[0089] In one embodiment, Figure 3 and Figure 4 As shown, the fixing assembly 120 includes two embedded fixing members 122 symmetrically arranged along the radial direction of the fixing tube 121; the arrangement direction of the two embedded fixing members 122 has an angle with the second direction and the third direction. In other words, the two embedded fixing members 122 are respectively located at two opposite corners of the rectangular area.

[0090] In another embodiment, Figure 11As shown, the fixing component 120 includes two groups of embedded fixing members 122 symmetrically arranged along the radial direction of the fixing cylinder 121; each group includes two embedded fixing members 122 symmetrically arranged along the radial direction of the fixing cylinder 121. The arrangement directions of the two embedded fixing members 122 in any group have an included angle with both the second direction and the third direction. That is to say, the four embedded fixing members 122 are respectively located at the four corners of a rectangular area.

[0091] In some embodiments, the blank area formed by the first concealed beam and the second concealed beam is square. The included angles formed by the arrangement directions of the two symmetrically arranged embedded fixing members 122 with the second direction and the third direction are both 45°.

[0092] In some embodiments, as Figures 11 - 14 shown, a lug 113 is provided on one side of the side wall 110d of the floor slab body 110 close to the second surface 110b. The lug 113 includes a third surface 113a and a fourth surface 113b arranged oppositely along the first direction; along the first direction, the third surface 113a is located between the first surface 110a and the second surface 110b, and the fourth surface 113b is in the same plane as the second surface 110b.

[0093] In one embodiment, as Figure 11 and Figure 12 shown, a lug 113 is provided on one side of the side wall 110d of the floor slab body 110 close to the second surface 110b. The lug 113 and the side wall 110d of the floor slab body 110 cooperate to form an L-shaped structure with the opening facing away from the floor slab body 110.

[0094] It should be noted that the formation of the lug 113 here can be formed by cutting off a part of the area on the floor slab body 110. As Figure 11 shown, L-shaped cut corners are provided around the floor slab body 110, and the removed part is on the side of the floor slab body 110 close to the first surface 110a, forming the on-board lug 113. When multiple precast slabs 100 are spliced to form a floor structure, the joint between two adjacent precast slabs 100 is formed by splicing two lugs 113. The concrete of the precast slabs 100 on both sides of the joint surface is exposed. Since the size of the joint is small (such as 20 mm), the epoxy treatment cannot be carried out on the concrete surfaces on both sides of the joint; and the conventional joint filling treatment technology is prone to cracking during use. Therefore, dust generation points are likely to be formed at the joints of the precast slabs 100, which will affect the cleanliness of the electronic factory during use.

[0095] In some embodiments, the lug 113 further includes a fifth surface 113c; the fifth surface 113c is connected to the third surface 113a and is also used to be connected to the fourth surface 113b; the lug 113 is provided with an L-shaped edge sealing member 114; the edge sealing member 114 covers the fifth surface 113c and a partial area of the side of the lug 113 away from the third surface 113a; the edge sealing member 114 does not protrude from the third surface 113a.

[0096] To solve the problem that the joints of the precast slabs 100 release particulate matter, affecting the cleanliness of the production environment, when the precast slabs 100 provided in the embodiments of the present application are processed, an L-shaped edge sealing member 114 is arranged in a circle outside the lugs 113 around the precast slabs 100, as Figure 14 shown. The height of the L-shaped edge sealing member 114 is the same as the thickness of the lug 113 of the precast slab 100, the lower side is flush with the lower surface of the precast slab 100, and the top surface of the L-shaped edge sealing member 114 is flush with the top surface of the concrete lug 113 of the precast slab 100.

[0097] In one embodiment, as Figure 13 and Figure 14 shown, the lug 113 further includes a fifth surface 113c, a sixth surface 113d and a seventh surface 113e that are connected in sequence; the side of the fifth surface 113c away from the sixth surface 113d is connected to the third surface 113a, and the side of the seventh surface 113e away from the sixth surface 113d is connected to the fourth surface 113b; wherein: the distance between the sixth surface 113d and the third surface 113a is less than the distance between the fourth surface 113b and the third surface 113a, and the distance between the seventh surface 113e and the side wall of the floor slab body 110 is less than the distance between the fifth surface 113c and the side wall of the floor slab body 110; the lug 113 is provided with an edge sealing member 114; the edge sealing member 114 covers the fifth surface 113c, the sixth surface 113d and the seventh surface 113e; the edge sealing member 114 does not protrude from the third surface 113a, and the side of the edge sealing member 114 away from the sixth surface 113d is flush with the fourth surface 113b.

[0098] In one embodiment, the partial length range of the side of the L-shaped edge sealing member 114 away from the third surface 113a, that is, covering the sixth surface 113d and the seventh surface 113e, is 30 - 50 mm. Here, the length can be understood as the dimension in the arrangement direction of the fifth surface 113c and the seventh surface 113e.

[0099] In a second aspect, the embodiments of the present application further provide a floor structure, including a plurality of precast Qi's slab groups as described in any one of the first aspects; a slab-intermediate cast-in-place section is formed at the splicing position of two adjacent precast slabs 100; a slab-on cast-in-place layer is laid on the precast slabs 100 and is connected to the slab-intermediate cast-in-place section.

[0100] In one embodiment, the floor slab structure includes precast frame columns, a support assembly, and multiple precast Qishi slab groups. The support assembly is installed on the precast frame columns and is used to support the precast slab 100; a cast-in-place section between slabs is formed at the joint between two adjacent precast slabs 100; a cast-in-place layer on the slab is laid on the precast slab 100 and is connected to the cast-in-place section between slabs; a to-be-installed cylinder 200 is arranged in the cast-in-place layer on the slab, and the to-be-installed cylinder 200 is sleeved outside the fixed cylinder 121 in the precast slab 100 and is connected to the embedded fixture 122.

[0101] In a third aspect, an embodiment of the present application further provides a floor slab structure, including multiple precast Qishi slab groups provided in some embodiments of the first aspect; a cast-in-place section between slabs is formed at the joint between two adjacent precast slabs 100; a cast-in-place layer on the slab is laid on the precast slab 100 and is connected to the cast-in-place section between slabs. A caulking strip 400 is clamped on one side of the joint between two adjacent precast slabs 100 away from the cast-in-place section between slabs. The caulking strip 400 is in surface contact with the lug 113 of two adjacent precast slabs 100 and at least covers the joint 101 formed by two adjacent precast slabs 100.

[0102] As Figure 15 shown, multiple precast slabs 100 are spliced to form a floor slab structure, and the joint 101 between two adjacent precast slabs 100 is formed by splicing two lugs 113. The concrete of the precast slab 100 on both surfaces of the joint 101 is exposed. Since the size of the joint 101 is small, the epoxy treatment cannot be applied to the concrete surfaces on both sides of the joint 101; and for the conventional caulking treatment technology, it is easy to crack during use. Therefore, dust generation points are likely to be formed at the joint 101 of the precast slab 100, which will affect the cleanliness of the electronic factory building during use.

[0103] In the embodiment of the present application, a caulking strip 400 is added at the bottom of the joint 101 to block the joint 101 between the precast slabs 100, prevent the concrete surfaces on both sides of the joint 101 from being exposed, and prevent the cast-in-place layer concrete of the upper cast-in-place section between slabs from overflowing from the joint 101.

[0104] In one embodiment, as Figure 15 shown, the caulking strip 400 includes a buckle, and the buckle is snapped into the joint 101 and inserted into the concrete surfaces on both sides of the joint 101 to realize the clamping of the caulking strip 400.

[0105] In a fourth aspect, an embodiment of the present application further provides a floor slab structure, including multiple precast Qishi slab groups provided in some embodiments of the first aspect; a cast-in-place section between slabs is formed at the joint between two adjacent precast slabs 100; a cast-in-place layer on the slab is laid on the precast slab 100 and is connected to the cast-in-place section between slabs;

[0106] The in-situ cast section between the slabs includes a grout-blocking strip 300. The grout-blocking strip 300 contacts the ear surfaces of two adjacent precast slabs 100 and covers at least the joint formed by the two adjacent precast slabs 100.

[0107] As Figure 16 shown, when the precast slab 100 is processed, a smooth L-shaped edge-sealing member 114 is arranged on the outer side of the peripheral ears 113 to prevent the concrete from being exposed on both sides of the joint 101 after installation. When casting the in-situ cast section between the slabs, a grout-blocking strip 300 is additionally arranged at the top of the joint to prevent the concrete of the in-situ cast layer in the upper in-situ cast section between the slabs from leaking.

[0108] Figure 17 The layout area of the grout-blocking strip 300 is shown in Figure 17 . It can be understood that the grout-blocking strip 400 can also be laid out with reference to the layout area of the grout-blocking strip 300 shown in

[0109] It should be noted that the materials of the L-shaped edge-sealing member 114, the grout-blocking strip 300, and the grout-blocking strip 400 should be made of materials with smooth surfaces and stable chemical properties.

[0110] In a fifth aspect, the embodiment of the present application further provides a floor slab structure, which is characterized in that it includes a plurality of precast Qishi slab groups provided in some embodiments of the first aspect; a in-situ cast section between two adjacent precast slabs 100 is formed; a superimposed in-situ cast layer is laid on the precast slab 100 and is connected to the in-situ cast section between the slabs;

[0111] The superimposed in-situ cast layer on the slab includes a first integrated steel cage 500 and a second integrated steel cage 600; the first integrated steel cage 500 extends along the second direction and is connected to the first stirrup group 111, and the second integrated steel cage 600 extends along the third direction and is connected to the second stirrup group 112;

[0112] The first integrated steel cage 500 and / or the second integrated steel cage 600 includes high-leg stirrups and low-leg stirrups arranged alternately along its extending direction. One high-leg stirrup is correspondingly connected to one stirrup, and one low-leg stirrup is correspondingly connected to one stirrup;

[0113] The low-leg stirrups are in contact with the floor slab body 110; there is a gap between the high-leg stirrups and the floor slab body 110.

[0114] As Figure 18As shown, the first integrated steel reinforcement cage 500 includes high-leg stirrups 510 and low-leg stirrups 520 that are alternately arranged in the second direction, i.e., the slab span direction. Along the Z direction, i.e., the height direction of the first integrated steel reinforcement cage 500, the tops of all high-leg stirrups 510 and all low-leg stirrups 520 are flush, and the bottom of the high-leg stirrups 510 is higher than the bottom of the low-leg stirrups 520. It can also be understood that along the Z direction, the tops of the high-leg stirrups 510 and the low-leg stirrups 520 are flush, and the length dimension of the low-leg stirrups 520 is greater than the length dimension of the high-leg stirrups 510.

[0115] The first integrated steel reinforcement cage 500 further includes longitudinal bars 530, waist bars 540, and tie bars 550. The longitudinal bars 530 are connected to the tops of all high-leg stirrups 510 and all low-leg stirrups 520, the waist bars 540 are connected to the middles of all high-leg stirrups 510 and all low-leg stirrups 520, and one tie bar 550 is connected to two opposite waist bars 540 and the high-leg stirrups 510 or low-leg stirrups 520 connected to the waist bars 540.

[0116] As Figure 19 shown, the second integrated steel reinforcement cage 600 includes high-leg stirrups 610 and low-leg stirrups 620 that are alternately arranged in the third direction, i.e., the slab width span direction. Along the Z direction, i.e., the height direction of the second integrated steel reinforcement cage 600, the tops of all high-leg stirrups 610 and all low-leg stirrups 620 are flush, and the bottom of the high-leg stirrups 610 is higher than the bottom of the low-leg stirrups 620. It can also be understood that along the Z direction, the tops of the high-leg stirrups 610 and the low-leg stirrups 620 are flush, and the length dimension of the low-leg stirrups 620 is greater than the length dimension of the high-leg stirrups 610.

[0117] The second integrated steel reinforcement cage 600 further includes longitudinal bars 630, and the longitudinal bars 630 are connected to the tops of all high-leg stirrups 610 and all low-leg stirrups 620.

[0118] As Figure 20 shown, the concealed beam in the precast slab 100 includes stirrups 1111, waist bars 1112, and longitudinal bars 1113 at the bottom layer. Among them, the waist bars 1112 and the longitudinal bars 1113 are both located inside the floor slab body 110 and do not protrude from the surface of the floor slab body 110. The stirrups 1111 are higher than the top surface of the floor slab body 110 by a certain height, and this height is greater than the height by which the fixed cylinder 121 protrudes from the top surface of the floor slab body 110, and is used for the positioning and fixing of the steel bars of the concealed beam in the upper cast-in-place layer, i.e., the cast-in-place composite layer on the slab, and to protect the fixed cylinder 121.

[0119] As Figure 21 and Figure 22 shown, the stirrup arrangement of the concealed beam in the cast-in-place composite layer on the slab adopts a high-low interval stirrup arrangement method. The high-leg stirrups are flush with the tops of the stirrups in the precast slab 100 that protrude from the first surface 110a of the floor slab body 110, and are used for the binding and positioning of the waist bars at this position, as Figure 23As shown in the figure. The lower limb stirrups directly fall onto the top surface of the floor slab body 110, i.e., the first surface 110a. That is to say, the lower limb stirrups are in contact with the top surface of the floor slab body 110, as Figure 24 shown, which is convenient for accurately positioning the position of the concealed beam steel bars in the cast-in-place layer in the thickness direction of the precast slab 100.

[0120] When tying the steel bars of the upper slab cast-in-place layer on-site, the longitudinal steel bars above the floor slab body in the precast slab conflict with the stirrups of the cast-in-place layer, affecting the tying and fixing of the stirrups of the cast-in-place layer. It is necessary to break open the stirrups and put them on both sides of the waist steel bars before tying and fixing, which is difficult to construct and not easy to operate.

[0121] In the floor slab structure provided by the embodiment of the present application, the steel bar arrangement of the precast slab is adjusted. The longitudinal waist steel bars above the floor slab body are removed, and the stirrups protruding from the upper surface of the floor slab body (such as 50 mm high) are retained. The arrangement method of the stirrup sets in the cast-in-place layer is adjusted, and a high-low interval stirrup arrangement method is adopted. One stirrup directly falls onto the top surface of the precast slab, and the adjacent stirrup is flush with the stirrups in the precast slab that are higher than the upper surface of the floor slab body, and then the longitudinal waist steel bars are inserted and tied and fixed. The high-low interval on-site stirrup design can, on the one hand, avoid the deformation of the stirrup sets being stepped on during the construction process by supporting on the precast slab, and on the other hand, it can facilitate the fixing of the inserted longitudinal waist steel bars. The high-low interval on-site stirrup design is convenient for the installation and fixing of the steel bars in the cast-in-place layer, and at the same time, an integrated steel cage is adopted to improve the construction efficiency.

[0122] In some embodiments, the cast-in-place layer on the slab further includes a first post-inserted waist steel bar 700, a second post-inserted waist steel bar 800, and a third post-inserted waist steel bar 900; the first post-inserted waist steel bar 700 is used to be inserted into the first integrated steel cage 500 and connected to the first stirrup group 111 after the first integrated steel cage 500 is fixed to the first stirrup group 111;

[0123] The second post-inserted waist steel bar 800 is used to be inserted into the second integrated steel cage 600 and connected to the second stirrup group 112 after the second integrated steel cage 600 is fixed to the second stirrup group 112;

[0124] The third post-inserted waist steel bar 900 is used to be inserted into the second integrated steel cage 600 and connected to the second integrated steel cage 600 after the second integrated steel cage 600 is fixed to the second stirrup group 112;

[0125] The distance between the third post-inserted waist steel bar 900 and the floor slab body 110 is greater than the distance between the second post-inserted waist steel bar 800 and the floor slab body 110.

[0126] The cast-in-place layer on the slab further includes a first post-inserted waist reinforcement bar 700, a second post-inserted waist reinforcement bar 800, and a third post-inserted waist reinforcement bar 900. When arranging the concealed beam steel bars of the cast-in-place layer on the slab, the concealed beam steel bars in two directions of the cast-in-place layer on the slab, namely the slab span direction and the slab width direction, are respectively assembled into integrated steel bar cages, namely the first integrated steel bar cage 500 and the second integrated steel bar cage 600, and then the two integrated steel bar cages are integrally installed and fixed. As Figure 21 shown, the first post-inserted waist reinforcement bar 700 is inserted into the interior of the first integrated steel bar cage 500 after the first integrated steel bar cage 500 is fixed to the first stirrup group 111 and is fixedly bound to the first stirrup group 111 on site. As Figure 22 shown, the second post-inserted waist reinforcement bar 800 and the third post-inserted waist reinforcement bar 900 are inserted into the interior of the second integrated steel bar cage 600 after the second integrated steel bar cage 600 is fixed to the second stirrup group 112. The second post-inserted waist reinforcement bar 800 is fixedly bound to the second stirrup group 112 on site, the third post-inserted waist reinforcement bar 900 is fixedly bound to the second integrated steel bar cage 600 on site, and the tie bar 910 is bound after binding.

[0127] In an embodiment, the specific construction steps of the concealed beam steel bars of the cast-in-place layer on the slab are as follows:

[0128] S1. The assembled first integrated steel bar cage 500 extending along the slab span direction of the precast slab 100 is integrally placed at the corresponding position of the precast slab 100 and is fixedly bound to the stirrups of the precast slab 100. The first integrated steel bar cage 500 in the slab span direction of the precast slab 100 is as Figure 18 shown, including high-leg stirrups 510, low-leg stirrups 520, upper longitudinal bars 530, upper row of waist reinforcement bars 540, and tie bars 550, without lower row of waist reinforcement bars.

[0129] S2. Insert the first post-inserted waist reinforcement bar 700, i.e., the lower row of waist reinforcement bars, and fixedly bind it together with the first integrated steel bar cage 500 and the stirrups of the precast slab 100.

[0130] S3. The assembled second integrated steel bar cage 600 extending along the slab width direction of the precast slab 100 is integrally placed at the corresponding position of the precast slab 100 and is fixedly bound to the stirrups of the precast slab 100. The second integrated steel bar cage 600 in the slab width direction of the precast slab 100 is as Figure 19 shown, including high-leg stirrups 610, low-leg stirrups 620, and upper longitudinal bars 630, without waist reinforcement bars and tie bars.

[0131] S4. Insert the second post-inserted waist reinforcement bar 800, i.e., the lower row of waist reinforcement bars, and fixedly bind it together with the second integrated steel bar cage 600 and the stirrup sleeve of the precast slab 100.

[0132] S5. Insert the third post-inserted waist reinforcement bar 900, i.e., the upper row of waist reinforcement bars, and the tie bar 910 at the corresponding position for binding and fixing.

[0133] Complete the installation of the concealed beam steel bars in the cast-in-place layer laminated on the slab.

[0134] The floor slab structure provided by the embodiment of the present application can effectively reduce the amount of on-site steel bar binding, and the steel bar binding area is above the precast slab 100, with a shallow depth, which is convenient for workers to operate, greatly reducing the difficulty of steel bar binding and improving the overall on-site construction efficiency.

[0135] In one embodiment, the on-site construction steps of the floor slab structure are as follows:

[0136] S1. Arrange the precast slab 100; the precast slab 100 includes a fixing component 120 and an L-shaped edge sealing member 114;

[0137] S2. Install and fix the to-be-installed cylinder 200 on the precast slab 100;

[0138] S3. Install the first integrated steel bar cage 500 in the slab span direction;

[0139] S4. Insert the first post-inserted waist steel bar 700 in the slab span direction and bind and fix it;

[0140] S5. Install the second integrated steel bar cage 600 in the slab width direction;

[0141] S6. Insert the second post-inserted waist steel bar 800 in the slab width direction and bind and fix it;

[0142] S7. Insert the third post-inserted waist steel bar 900 in the slab width direction and bind and fix the stirrups;

[0143] S8. Install and fix the grout blocking strip 300 at the joint of the precast slab 100;

[0144] S9. Pour the concrete of the cast-in-place layer.

[0145] Obviously, those skilled in the art can make various changes and modifications to the embodiments of the present application without departing from the spirit and scope of the present application. Thus, if these modifications and variations of the present application fall within the scope of the claims of the present application and their equivalent technologies, the present application is also intended to include these changes and modifications.

Claims

1. A prefabricated Kirchhoff plate group, characterized in that, include: Prefabricated panels and tubes to be installed; The prefabricated panel includes a floor panel body and a plurality of fixing components; The floor slab body comprises a first surface and a second surface arranged opposite to each other along a first direction; The fixing assembly includes a fixing tube and a pre-embedded fixing piece; the fixing tube penetrates the floor body along the first direction to form a ventilation hole; the pre-embedded fixing piece and the fixing tube both protrude from the first surface; the fixing assembly and the floor body are cast in the factory as an integrated structure; each of the fixing assemblies is used to connect to a corresponding tube to be installed; The barrel to be loaded comprises a barrel body and a fixing lug fixed to the outer side of the barrel body; the barrel body is used to be sleeved on the outer side of the fixing barrel and connected to the embedded fixing piece through the fixing lug.

2. The prefabricated Kirchhoff plate group according to claim 1, characterized in that, The embedded fixing member includes an embedded part, an embedded plate and a connecting plate; the embedded plate includes a first surface and a second surface arranged opposite to each other along the first direction, the first surface is connected to the connecting plate, and the second surface is connected to the embedded part; the first surface is flush with the first surface; A first gap is provided between the connecting plate and the outer wall surface of the fixing tube, and the first gap is greater than or equal to the wall thickness of the tube body.

3. The prefabricated Qishi board group according to claim 2, wherein, A first stirrup group and a second stirrup group are arranged in the floor slab body, the first stirrup group includes a plurality of stirrups arranged at intervals along the second direction, and the second stirrup group includes a plurality of stirrups arranged at intervals along the third direction; all the stirrups protrude from the first surface; The orthographic projections of the stirrups on the floor slab body do not overlap with the orthographic projections of the ventilation holes on the floor slab body; The orthographic projections of the stirrups on the floor slab body do not overlap with the orthographic projections of the embedded plates on the floor slab body.

4. The prefabricated Kirchhoff plate group according to claim 3, wherein, The fixing assembly comprises at least one group of embedded fixing parts symmetrically arranged along the radial direction of the fixing tube; the arrangement directions of the embedded fixing parts on both sides of the symmetrical arrangement have angles with the second direction and the third direction.

5. The prefabricated Kirchhoff plate group according to claim 3 or 4, characterized in that, The fixed lug is fixed to the first end of the tube body, and the first end of the tube body is used for being sleeved on the outside of the fixed tube.

6. The prefabricated Qishi board group according to claim 3 or 4, characterized in that, The fixed lifting ear and the tube body are an integrated structure.

7. The prefabricated Qi's plate group according to claim 3 or 4, characterized in that, A lug is provided on the side wall of the floor body close to the second surface, and the lug includes a third surface and a fourth surface arranged opposite to each other along the first direction; along the first direction, the third surface is located between the first surface and the second surface, and the fourth surface and the second surface are located in the same plane.

8. The prefabricated Qishi board group according to claim 7, characterized in that, The ear also includes a fifth surface; the fifth surface is connected to the third surface and is also used to connect to the fourth surface; the ear is provided with an L-shaped edge banding member; the edge banding member covers the fifth surface and a partial area of ​​the ear facing away from the third surface; the edge banding member does not protrude from the third surface.

9. A floor structure, characterized in that, It comprises a plurality of prefabricated Qishi board groups as described in any one of claims 1 to 8; the joint of two adjacent prefabricated boards forms a cast-in-place section between boards; the prefabricated boards are paved with a board-overlapping cast-in-place layer, which is connected to the cast-in-place section between boards.

10. A floor structure, characterized in that, The method comprises a plurality of prefabricated Qishi panels as described in any one of claims 3 to 8; the joint of two adjacent prefabricated panels forms an inter-panel cast-in-place section; the prefabricated panels are provided with an on-panel superimposed cast-in-place layer, which is connected to the inter-panel cast-in-place section; The slab-mounted cast-in-place layer comprises a first integrated steel cage and a second integrated steel cage; the first integrated steel cage extends along the second direction and is connected to the first stirrup group, and the second integrated steel cage extends along the third direction and is connected to the second stirrup group; The first integrated steel cage and / or the second integrated steel cage comprises high limb stirrups and low limb stirrups alternately arranged along the extension direction thereof, one high limb stirrup is connected to one stirrup correspondingly, and one low limb stirrup is connected to one stirrup correspondingly; The lower stirrups are in contact with the floor slab body; and there is a gap between the higher stirrups and the floor slab body.

11. The floor slab structure according to claim 10, characterized in that, The laminated cast-in-place layer on the plate further includes a first rear-inserted waist reinforcement, a second rear-inserted waist reinforcement and a third rear-inserted waist reinforcement; the first rear-inserted waist reinforcement is used to be inserted into the first integrated steel cage and connected to the first stirrup group after the first integrated steel cage is fixed to the first stirrup group; The second rear-inserted waist reinforcement is used to be inserted into the second integrated steel cage and connected to the second stirrup group after the second integrated steel cage is fixed to the second stirrup group; The third rear-inserted waist reinforcement is used to be inserted into the second integrated steel cage and connected to the second integrated steel cage after the second integrated steel cage is fixed to the second stirrup group; The distance between the third rear inserted waist reinforcement and the floor slab body is greater than the distance between the second rear inserted waist reinforcement and the floor slab body.

12. A floor structure, characterized in that, It comprises a plurality of prefabricated Qishi panels as claimed in claim 7; the joint of two adjacent prefabricated panels forms an inter-panel cast-in-place section; the prefabricated panels are provided with an on-panel superimposed cast-in-place layer, which is connected to the inter-panel cast-in-place section; A caulking strip is clamped on the side of the joint of two adjacent prefabricated panels away from the cast-in-place section between the panels. The caulking strip contacts the ear surfaces of the two adjacent prefabricated panels and at least covers the joint formed by the two adjacent prefabricated panels.

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