Fabricated composite floor slab structure

Abstract

The utility model discloses an assembly type composite floor slab structure which is characterized in that a plurality of sets of composite slab prefabricated bottom plates are erected on a bearing wall, a plurality of sets of load-bearing steel bars are arranged at the bottoms of the composite slab prefabricated bottom plates, truss ribs are fixedly installed above the load-bearing steel bars, and the upper portions of the truss ribs extend out of the tops of the composite slab prefabricated bottom plates to form protruding parts; according to the utility model, the laminated slab prefabricated bottom slab is arranged as the bottom slab surface of the floor slab, the first gradient slab surface rib and the second gradient slab surface rib are laid on the laminated slab prefabricated bottom slab, and the second gradient slab surface rib is lifted, so that the cast-in-place laminated layer with preset height adjustment is poured on the laminated slab prefabricated bottom slab; the height of the bathroom area in the floor slab is adjusted, so that the problems that the weight is increased by adopting plain concrete backfilling, and the ground hollowing, peeling and the like are easily caused are solved; and the problems that the bottom of the floor slab is not flat during the plate descending of the bathroom, construction inconvenience such as formwork erecting and complex construction at joints of the plate descending is caused, and the overall assembly rate score calculation is influenced by cast-in-place of the floor slab of the whole bathroom are solved.

Description

Technical Field

[0001] The utility model discloses an assembled composite floor structure, belonging to the technical field of construction. Background Art

[0002] In building bathroom design, in order to achieve dry and wet separation, the floor height of the bathroom is usually different from the floor of the floor structure. The prefabricated floor of the composite board can be split according to the height difference to meet the needs of the bathroom.

[0003] However, if plain concrete backfill is used to fill the height difference between the indoor and outdoor bathrooms, it will increase the weight and easily cause hollowing and peeling problems on the ground, which will cause inconveniences in construction such as uneven floor slabs when the bathroom floor is lowered, formwork at the joints of the lowered floor, and complex structures at the joints. If the entire bathroom floor is cast in place, although the problem of plain concrete backfill can be solved, it may reduce the overall assembly rate score. Therefore, the defects of the existing method of adjusting the bottom plate height in the design of prefabricated building bathrooms include increased plain concrete backfill weight, uneven floor slabs that affect the appearance, complex node structures that are inconvenient to construct, and reduced assembly rate scores. Utility Model Content

[0004] In view of the deficiencies in the prior art, the utility model aims to provide an assembled composite floor structure to solve the problems of the prior art.

[0005] In order to achieve the above purpose, the utility model is implemented through the following technical solutions:

[0006] An assembled composite floor structure, comprising a plurality of prefabricated bottom plates of composite panels erected on load-bearing walls or beams, a plurality of stress-bearing steel bars are arranged at the bottom of the prefabricated bottom plates of composite panels, truss bars are fixedly installed above the stress-bearing steel bars, and the truss bars extend from the top of the prefabricated bottom plates of composite panels to form a convex portion;

[0007] A cast-in-place laminated layer is arranged above the prefabricated bottom plate of the laminated plate, wherein a plurality of groups of first gradient plate surface reinforcements are arranged inside the cast-in-place laminated layer, and a second gradient plate surface reinforcement is also arranged above the first gradient plate surface reinforcement;

[0008] The end of the first gradient plate reinforcement is bent to form a straight anchoring portion, and the straight anchoring portion and the raised portion are anchored in the cast-in-place superimposed layer;

[0009] The end of the second gradient plate reinforcement is bent downward to form a butt joint portion, and the butt joint portion is perpendicular to the upper surface of the prefabricated bottom plate of the composite plate.

[0010] As a further improvement, the end of the second gradient plate rib extends from the abutment portion toward the side to form a fitting portion, and the fitting portion fits with the upper surface of the prefabricated bottom plate of the composite plate.

[0011] As a further improvement, the height of the raised portion of the truss reinforcement below the second gradient plate surface reinforcement is greater than the raised portion of the truss reinforcement below the first gradient plate surface reinforcement, and is less than the height of the second gradient plate surface reinforcement.

[0012] As a further improvement, the raised portion is provided with an additional truss rib at the high and low intersection surfaces, and a reinforcing rod is transversely provided in the middle of the additional truss rib.

[0013] As a further improvement, additional structural reinforcements are welded between multiple groups of the truss reinforcements, structural reinforcements are tied between multiple groups of the first gradient plate surface reinforcements, and structural reinforcements are tied between multiple groups of the second gradient plate surface reinforcements.

[0014] As a further improvement, the cast-in-place composite layer also includes a cast-in-place joint arranged between an adjacent group of prefabricated bottom plates of the composite plate, and bottom longitudinal reinforcement is transversely arranged inside the cast-in-place joint, and both ends of the bottom longitudinal reinforcement are bent upward to form a first anchoring portion.

[0015] As a further improvement, it also includes multiple groups of joint reinforcing steel bars overlapped and arranged above the cast-in-place joints, the two ends of the joint reinforcing steel bars are bent upward to form a second anchoring portion, the second anchoring portion extends into the cast-in-place superimposed layer of the superimposed plate on both sides of the cast-in-place joint for a certain anchoring length, and additional structural bars are tied between the multiple groups of joint reinforcing steel bars;

[0016] As a further improvement, the bonding portion is arranged above the cast-in-place joint, and the bonding portion is erected above two adjacent groups of prefabricated bottom plates of the composite slab.

[0017] The beneficial effects of the utility model are:

[0018] The utility model arranges a precast base plate of a composite slab as the bottom surface of the floor slab, lays a first gradient plate rib and a second gradient plate rib on the precast base plate of the composite slab, and raises the second gradient plate rib, and then casts a cast-in-place composite layer with a preset height adjustment on the precast base plate of the composite slab, thereby completing the height adjustment of the bathroom area in the floor slab, and strengthens the connection with the precast base plate of the composite slab through the straight anchoring portion and the raised portion by the first gradient plate rib and the second gradient plate rib, thereby not only solving the problem of increasing weight by using plain concrete, and easily causing problems such as hollowing and peeling of the ground, but also solving the construction inconveniences such as uneven floor slab bottom when the bathroom slab is lowered, the formwork at the joints of the lowered slab and the complex structure at the joints, and the cast-in-place of the entire bathroom floor affecting the calculation of the overall assembly rate score, and the like. Through the above design, not only can the calculation of the overall assembly rate score be better improved, but also the problems of hollowing and peeling of the ground, the beauty of the indoor space, and the inconvenience of construction can be effectively avoided. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the technical solution of the implementation mode of the utility model, the drawings required for use in the implementation mode will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the utility model and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without paying creative work.

[0020] Figure 1 The utility model is a schematic diagram of a side view of an assembled composite floor structure.

[0021] Figure 2 It is a side structural schematic diagram of another embodiment of an assembled composite floor structure of the utility model.

[0022] Figure 3 It is a comparative structural schematic diagram of truss bars of different heights in an assembled composite floor structure of the utility model.

[0023] 1. Precast bottom plate of composite slab; 2. Load-bearing wall; 11. Load-bearing steel bars; 12. Truss bars; 13. Protrusion; 131. Additional truss bars; 14. Transverse truss reinforcement bars; 3. Cast-in-place composite layer; 31. First gradient slab surface reinforcement; 32. Second gradient slab surface reinforcement; 311. Straight anchorage; 321. Abutment; 322. Fitting; 121. Reinforcement rod; 4. Structural bars; 41. Additional structural bars; 5. Cast-in-place joints; 51. Bottom longitudinal bars; 511. First anchorage; 52. Joint reinforcement bars; 521. Second anchorage. DETAILED DESCRIPTION

[0024] In order to make the purpose, technical scheme and advantages of the embodiments of the utility model clearer, the technical scheme in the embodiments of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiments of the utility model. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without making creative work belong to the scope of protection of the utility model. Therefore, the following detailed description of the embodiments of the utility model provided in the drawings is not intended to limit the scope of the utility model for which protection is sought, but merely represents the selected embodiments of the utility model. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without making creative work belong to the scope of protection of the utility model.

[0025] In the description of the present invention, the terms "first" and "second" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0026] The defects of the existing method of adjusting the bottom plate height in the design of prefabricated building bathrooms include increased weight of plain concrete backfill, uneven floor bottom affecting the appearance, complex node structure and inconvenient construction, and reduced assembly rate score.

[0027] Example 1

[0028] The prefabricated floor slabs are variable thickness slabs, and the bathroom floor slabs are fully prefabricated slabs.

[0029] Reference Figure 1 As shown, an assembled composite floor structure comprises:

[0030] A plurality of groups of prefabricated floor plates 1 for composite panels are erected on the load-bearing wall 2, wherein a plurality of groups of stress-bearing steel bars 11 are arranged at the bottom of the prefabricated floor plates 1 for composite panels, truss bars 12 are fixedly installed above the stress-bearing steel bars 11, and a protrusion 13 is formed by extending from the top of the prefabricated floor plates 1 for composite panels above the truss bars 12;

[0031] A cast-in-place laminated layer 3 is arranged above the prefabricated bottom plate 1 of the laminated plate, wherein a plurality of groups of first gradient plate surface reinforcements 31 are arranged inside the cast-in-place laminated layer 3, and a second gradient plate surface reinforcement 32 is also arranged above the first gradient plate surface reinforcements 31;

[0032] The end of the first gradient plate reinforcement 31 is bent to form a straight anchoring portion 311, and the straight anchoring portion 311 is anchored to the raised portion 13 in the cast-in-place superimposed layer;

[0033] The end of the second gradient plate rib 32 is bent downward to form a contact portion 321 , and the contact portion 321 is perpendicular to the upper surface of the prefabricated base plate 1 of the composite plate.

[0034] By setting the precast base plate 1 of the composite board as the bottom surface of the floor, by laying the first gradient plate rib 31 and the second gradient plate rib 32 on the precast base plate 1 of the composite board, and by raising the second gradient plate rib 32, and then pouring the cast-in-place composite layer 3 with a preset height adjustment on the precast base plate 1 of the composite board, the height adjustment of the bathroom area in the floor is completed, and the first gradient plate rib 31 and the second gradient plate rib 32 are connected to the precast base plate 1 of the composite board through the straight anchoring part 311 and the raised part 13, and the first gradient plate rib 31 and the second gradient plate rib 32 are connected to the precast base plate 1 of the composite board through the straight anchoring part 311 and the raised part 13, and the first gradient plate rib 31 and the second gradient plate rib 32 are connected to the precast base plate 1 of the composite board. Pouring is carried out to form a cast-in-place composite layer with a preset height adjustment on the prefabricated base plate 1 of the composite slab, which not only solves the problem of using plain concrete backfill, which will increase the weight and easily cause problems such as hollowing and peeling of the ground, but also solves the problems such as the uneven bottom of the floor slab caused by lowering the slab in the bathroom, the inconvenience of construction such as the formwork at the joints of the lowered slab and the complex structure at the joints, and the cast-in-place of the entire bathroom floor slab affecting the calculation of the overall assembly rate score. Through the above design, not only can the calculation of the overall assembly rate score be better improved, but also the problems of hollowing and peeling of the ground, increased weight, unsightly interior space, and inconvenient construction can be effectively avoided.

[0035] In order to solve the connection problem between the prefabricated base plate 1 of the composite board and the second gradient board rib 32, the end of the second gradient board rib 32 extends from the abutment portion 321 toward the side to form a fitting portion 322, and the fitting portion 322 fits with the upper surface of the prefabricated base plate 1 of the composite board.

[0036] The design of the fitting portion 322 increases the connection area between the prefabricated base plate 1 of the composite board and the second gradient plate rib 32, thereby effectively enhancing the strength of the connection. This ensures that the stress in the structure can be better transmitted under the load, improving the reliability of the connection and the overall strength of the structure. It also helps to improve the shear bearing capacity of the connection between the prefabricated base plate 1 of the composite board and the second gradient plate rib 32. The fitting portion 322 in the design can increase the transmission area of ​​the lateral force, thereby improving the overall shear resistance of the structure.

[0037] The arrangement of the fitting portion 322 can effectively ensure a stable connection between the prefabricated base plate 1 of the composite plate and the second gradient plate rib 32. This helps prevent displacement, vibration or deformation of the structure during use, and ensures the stability and safety of the floor structure in the bathroom area.

[0038] To solve the load transfer and connection performance problems in concrete structures, the height of the raised portion 13 of the truss bar 12 below the second gradient plate reinforcement 32 is made greater than the raised portion 13 of the truss bar 12 below the first gradient plate reinforcement 31 , and less than the height of the second gradient plate reinforcement 32 .

[0039] The raised portion 13 with a greater height can provide a larger contact area, which helps to more effectively transfer the load from the concrete structure to the truss reinforcement 12. This can reduce the risk of local stress concentration and improve the overall load transfer efficiency of the structure.

[0040] Furthermore, by setting the height of the protrusion 13 at different levels, a tighter locking connection can be achieved, thereby improving the connection stability between different components in the concrete structure, which helps to avoid loosening and brittle failure of the connection parts and ensure the safety and reliability of the structure.

[0041] Reasonable setting of the height difference of the protrusion 13 can achieve reasonable distribution of load when the structure is subjected to stress, reduce local stress concentration, and improve the overall bearing capacity and seismic resistance of the structure.

[0042] In this embodiment, the truss reinforcement 12 is a wavy steel bar formed by repeated bending, and the bottom height is consistent. The bottom is fixedly installed on the stress-bearing steel bar 11, and the top is fixedly connected to the first gradient plate surface reinforcement 31.

[0043] The straight anchoring portion 311 is welded to the raised portion 13 of the truss reinforcement 12 arranged below the second gradient plate surface reinforcement 32. In order to solve the connection stability and overall strength problems in the concrete structure, additional structural reinforcements 41 are welded between multiple groups of the truss reinforcements 12, structural reinforcements 4 are tied between multiple groups of the first gradient plate surface reinforcements 31, and structural reinforcements 4 are tied between multiple groups of the second gradient plate surface reinforcements 32. Among them, welding additional structural reinforcements 41 can increase the connection strength between the truss reinforcements 12 and improve the overall stability of the structure. This connection method can prevent relative movement between the truss reinforcements 12, reduce deformation and displacement of the structure, and thus avoid loosening and instability.

[0044] The welding connection method can withstand large tensile and shear forces, tightly connect multiple groups of truss bars 12 together, and improve the overall bearing capacity and earthquake resistance of the prefabricated floor 1 of the composite slab.

[0045] In this embodiment, the prefabricated base plate 1 of the composite board is embedded into the load-bearing wall 2 by at least 10 mm, and the bottom of the prefabricated base plate 1 of the composite board also supports the bathroom filling wall 6.

[0046] In addition, the above-mentioned hooking and fixing and the first gradient plate surface reinforcement 31, the second gradient plate surface reinforcement 32 and the embedded truss reinforcement 12 on the prefabricated bottom plate 1 of the composite plate can be connected and fixed by binding with steel wire, and welding can be used when necessary. Some of the connections are conventional connection methods in the technical field of this field. At the same time, when the cast-in-place composite layer is poured, conventional formwork will also be set up. These are common knowledge in the eyes of technicians in this field, so they will not be described one by one.

[0047] Example 2

[0048] Reference Figure 2-3 As shown, this embodiment is basically the same as Embodiment 1, except that: the prefabricated floor slab is split according to the entire floor slab of the bathroom, and the cast-in-place composite layer 3 also includes a cast-in-place joint 5 arranged between an adjacent group of prefabricated bottom plates 1 of the composite plate, and the cast-in-place joint 5 is laterally provided with bottom longitudinal reinforcement 51 inside, and both ends of the bottom longitudinal reinforcement 51 are bent upward to form a first anchoring portion 511, and both ends of the first anchoring portion 511 are bent upward by 135°.

[0049] It also includes a plurality of sets of joint reinforcing steel bars 52 overlapped and arranged above the cast-in-place joint 5, the two ends of the joint reinforcing steel bars 52 are bent upward to form a second anchoring portion 521, the second anchoring portion 521 extends into the cast-in-place superimposed layer 3 of the superimposed plate on both sides of the cast-in-place joint 5 for a certain anchoring length, and additional structural bars 41 are tied between the plurality of sets of joint reinforcing steel bars 52;

[0050] By laying bottom longitudinal reinforcement 51 between the split floor slabs, arranging joint reinforcement steel bars 52 supported by the precast bottom slab 1 of the composite slab above it, and tying the joint reinforcement steel bars 52 to the additional structural bars 41, joint reinforcement measures for the cast-in-place joints 5 are formed.

[0051] The bonding portion 322 is disposed above the cast-in-place joint 5 , and the bonding portion 322 is erected above two adjacent groups of the prefabricated bottom plates 1 of the composite slab.

[0052] Among them, the bottom longitudinal reinforcement 51 is transversely arranged inside the cast-in-place joint 5, and a 135° hook is arranged through the first anchoring portion 511, which can meet the anchoring requirements of the joint reinforcement and ensure the stable connection of the entire structure. Multiple groups of joint reinforcement reinforcements 52 overlapped and arranged above the cast-in-place joint 5 can strengthen the joint position by being tied with the additional structural reinforcement 41, effectively preventing the risk of cracks at the joint.

[0053] The above-mentioned arrangement can effectively optimize the structural performance of the prefabricated floor slab, avoid fatigue and damage at the joints, extend the service life of the structure, and improve the stability and safety of the overall structure.

[0054] In this embodiment, the truss reinforcement 12 adopts an inverted V structure and is arranged in the precast base plate 1 of the composite slab on both sides of the cast-in-place joint 5, and the two ends of the bottom of the truss reinforcement 12 are fixed on the stress-bearing steel bars 11, and the top is fixedly connected to the first gradient plate surface reinforcement 31.

[0055] At the same time, due to different height requirements, when the height of the second gradient plate rib 32 increases, the height of the corresponding raised portion 13 also increases, and when the height of the second gradient plate rib 32 decreases, the height of the corresponding raised portion 13 also decreases. Therefore, the same truss rib 12 has a weak point at the height change of the raised portion 13. Therefore, an additional truss rib 131 is provided at the height change of the raised portion 13, and a reinforcing rod 121 is provided in the middle of the additional truss rib 131. The reinforcing rod 121 is provided with a transverse truss reinforcing rib 14. By providing the additional truss rib 131 to connect the high and low raised portions on both sides, the raised portion 13 of the truss rib 12 can maintain its original working performance at the height change.

[0056] In addition, the above-mentioned hooking and fixing and the first gradient plate surface reinforcement 31, the second gradient plate surface reinforcement 32 and the embedded truss reinforcement 12 on the prefabricated bottom plate 1 of the composite plate can be connected and fixed by binding with steel wire, and welding can be used when necessary. Some of the connections are conventional connection methods in the technical field of this field. At the same time, when the cast-in-place composite layer is poured, conventional formwork will also be set up. These are common knowledge in the eyes of technicians in this field, so they will not be described one by one.

[0057] It should be noted that the equipment structure and drawings of the utility model mainly describe the principle of the utility model. In terms of the technology of the design principle, the settings of the power mechanism, power supply system and control system of the device are not fully described. On the premise that the technical personnel in this field understand the principle of the above utility model, the details of the power mechanism, power supply system and control system can be clearly known. The control method of the application document is automatic control through a controller, and the control circuit of the controller can be realized by simple programming by the technical personnel in this field;

[0058] The standard parts used therein can all be purchased from the market and can be customized according to the instructions and drawings. The specific connection methods of each part adopt conventional means such as mature bolts, rivets, welding, etc. in the prior art. The machinery, parts and equipment all adopt conventional models in the prior art, and the structures and principles of the components known to technical personnel in this field can be known by these technical personnel through technical manuals or through conventional experimental methods.

[0059] The above description is only the preferred implementation of the utility model, and is not intended to limit the utility model. For those skilled in the art, the utility model can have various modifications and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. An assembled composite floor structure, characterized in that: include: A plurality of groups of prefabricated floor plates (1) of composite slabs are erected on the load-bearing wall (2), wherein a plurality of groups of stress-bearing steel bars (11) are arranged at the bottom of the prefabricated floor plates (1), truss bars (12) are fixedly installed above the stress-bearing steel bars (11), and the truss bars (12) extend from the top of the prefabricated floor plates (1) to form a protrusion (13); A cast-in-place laminated layer (3) is arranged above the prefabricated base plate (1) of the laminated plate, wherein a plurality of groups of first gradient plate surface reinforcements (31) are arranged inside the cast-in-place laminated layer (3), and second gradient plate surface reinforcements (32) are also arranged above the first gradient plate surface reinforcements (31); The end of the first gradient plate reinforcement (31) is bent to form a straight anchoring portion (311), and the straight anchoring portion (311) is anchored to the raised portion (13) in the cast-in-place superimposed layer; The end of the second gradient plate rib (32) is bent downward to form a contact portion (321), and the contact portion (321) is perpendicular to the upper surface of the prefabricated base plate (1) of the composite plate.

2. The assembled composite floor structure according to claim 1, characterized in that: The end of the second gradient plate rib (32) extends from the abutment portion (321) toward the side to form a fitting portion (322), and the fitting portion (322) fits with the upper surface of the prefabricated base plate (1) of the composite plate.

3. The assembled composite floor structure according to claim 1, characterized in that: The height of the raised portion (13) of the truss rib (12) below the second gradient plate surface rib (32) is greater than the height of the raised portion (13) of the truss rib (12) below the first gradient plate surface rib (31), and is less than the height of the second gradient plate surface rib (32).

4. The assembled composite floor structure according to claim 3, characterized in that: The penetration depth of the abutment portion (321) of the straight anchoring portion (311) needs to meet the anchoring length requirement.

5. The assembled composite floor structure according to claim 1, characterized in that: The raised portion (13) is provided with an additional truss rib (131) at the high and low intersection surface, and a reinforcing rod (121) and a transverse truss reinforcing rib (14) are transversely arranged in the middle of the additional truss rib (131).

6. The assembled composite floor structure according to claim 1, characterized in that: Structural ribs (4) are welded between multiple groups of the truss ribs (12), structural ribs (4) are tied between multiple groups of the first gradient plate surface ribs (31), and structural ribs (4) are tied between multiple groups of the second gradient plate surface ribs (32).

7. The assembled composite floor structure according to claim 2, characterized in that: The cast-in-place composite layer (3) further comprises a cast-in-place joint (5) arranged between a group of adjacent prefabricated bottom plates (1) of the composite plate, wherein bottom longitudinal bars (51) are transversely arranged inside the cast-in-place joint (5), and both ends of the bottom longitudinal bars (51) are bent upwards by 135° to form a first anchoring portion (511).

8. The assembled composite floor structure according to claim 7, characterized in that: It also includes a plurality of groups of joint reinforcing steel bars (52) overlapped and arranged above the cast-in-place joints (5), the two ends of the joint reinforcing steel bars (52) being bent upwards by 135 degrees to form a second anchoring portion (521), the second anchoring portion (521) extending into the cast-in-place superimposed layers (3) of the superimposed plates on both sides of the cast-in-place joints (5) for a certain anchoring length, and additional structural bars (41) being tied between the plurality of groups of joint reinforcing steel bars (52).

9. The assembled composite floor structure according to claim 8, characterized in that: The bonding portion (322) is arranged above the cast-in-place joint (5), and the bonding portion (322) is erected above two adjacent groups of the prefabricated bottom plates (1) of the composite slab.

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