Full-prefabricated floor slab structure applied to modular building

Abstract

The utility model discloses a fully-prefabricated floor slab structure applied to a modular building. The fully-prefabricated floor slab structure comprises a floor slab body and a connecting part. Wherein the floor slab body is fixedly arranged at the upper end of a beam mold after being subjected to full-prefabrication or semi-prefabrication pouring molding by regions and is located at the top of the modular box body; the connecting parts are fixedly arranged between the floor slab bodies and on the outer sides of the floor slab bodies; according to the utility model, the floor body is subjected to regional construction in a full-prefabricating or semi-prefabricating manner, so that the construction efficiency and the quality control are improved; the floor slab body can be fixed to the top of the beam formwork through hoisting and located on the top of the modular box body, and rapid mounting and dismounting of the modular building are achieved. And secondly, due to the arrangement of the connecting parts, firm connection is formed between the floor bodies and the outer side connecting beams, the stability and the bearing capacity of the whole structure are improved, the influence of construction on the environment is reduced, the high-altitude operation time is shortened, the construction safety and efficiency are improved, and the construction cost is reduced.

Description

Technical Field

[0001] The embodiments of the utility model belong to the technical field of prefabricated buildings, and more specifically, relate to a fully prefabricated floor structure applied to modular buildings. Background Art

[0002] Prefabricated construction is a modern construction method that constructs buildings by prefabricating building components in factories and then transporting these components to the construction site for rapid assembly. The core advantages of this method are improved building efficiency, quality control, and construction speed, while reducing the labor and environmental impact required for on-site construction. Prefabricated building components, such as walls, floor slabs, stairs, and room modules, can be manufactured in a controlled factory environment according to standardized and precise production processes, thus ensuring building quality and construction accuracy. In addition, the design flexibility and modular characteristics of prefabricated buildings enable architects and engineers to customize designs according to project requirements, achieving diverse architectural styles and functional layouts. Although prefabricated buildings may face challenges in terms of initial investment and design adaptability, they are of great significance in driving the construction industry towards a more efficient, sustainable, and environmentally friendly direction.

[0003] In the current mainstream modular buildings, the floor slabs used on the top of the modules are generally composite slabs, that is, semi-prefabricated and semi-cast-in-place. The wet work volume of this type of slab is still large. In the existing partially prefabricated concrete slabs, although the amount of cast-in-place is small, the connection method is unstable, so there are also shortcomings such as poor integrity. With the continuous development of science and technology, some scholars have proposed new connection technologies suitable for fully prefabricated floor slab structures at this stage, which can solve the problem of poor integrity of fully prefabricated floor slabs. For example, some scholars have combined L-shaped, inverted L-shaped end plates and Z-shaped middle plates. Because multiple prefabricated panels are connected by tenon-tenon structure, the structure has better integrity. Among them, the Chinese patent with document number CN116104239A discloses a double-layer prefabricated composite floor connected by grouting tenon and tenon joints, including a lower prefabricated board and an upper prefabricated board; the top surface of the lower prefabricated board is provided with an upwardly protruding tenon, and a groove is provided in the middle of the top surface of the tenon, and the upper prefabricated board is placed on the top of the tenon; the bottom surface of the upper prefabricated board is connected with a tenon that can be extended into the groove of the tenon, and the upper prefabricated board is provided with a grouting hole located outside the tenon and corresponding to the groove of the tenon; the groove of the tenon and between the tenon are filled with a grouting part; a cast-in-place section and a cavity are provided between the lower prefabricated board and the upper prefabricated board, and the cast-in-place section and the cavity are separated by an isolation layer.

[0004] The Chinese patent with document number CN116104239A uses a double-layer prefabricated composite floor slab connected by grouting mother-and-child tenons, which can better reduce the floor load and the amount of steel bars used. It can also lay pipelines and set up thermal insulation and sound insulation layers in the cavity without increasing the occupied space. However, due to its high construction complexity and strict precision requirements, it is difficult to adapt to the rapid on-site assembly and flexibility pursued by modular buildings. In addition, the fixedness of the mother-and-child tenon structure limits the possibility of later adjustments, which is not conducive to the change and expansion of modular buildings. At the same time, this structure may affect the standardized production and transportation efficiency of prefabricated floor slabs and increase costs. Therefore, in modern modular buildings, there is an urgent need for a fully prefabricated concrete floor slab structure with high connection efficiency, low cost, good stability and easy on-site rapid assembly to meet the needs of rapid construction and long-term operation. Utility Model Content

[0005] In view of the above defects or improvement needs of the prior art, the utility model provides a fully prefabricated floor structure applied to modular buildings. By adopting a fully prefabricated or semi-prefabricated method to construct the floor body in different areas, the construction efficiency and quality control are improved, the impact of on-site construction on the environment and the time of high-altitude operations are reduced, the construction safety and construction speed are improved, and the construction cost and resource consumption are reduced.

[0006] In order to achieve the above-mentioned object, the utility model provides a fully prefabricated floor structure applied to modular buildings, comprising: a floor body and connecting components, wherein:

[0007] The floor slab body comprises: a fully prefabricated area of ​​the floor slab, a semi-prefabricated area of ​​the floor slab, a slab surface steel bar and a slab bottom steel bar; the fully prefabricated area of ​​the floor slab is fixedly arranged in the middle of the floor slab body; the semi-prefabricated area of ​​the floor slab is fixedly arranged around the fully prefabricated area of ​​the floor slab; the slab surface steel bar is fixedly arranged inside the fully prefabricated area of ​​the floor slab and close to the upper surface of the fully prefabricated area of ​​the floor slab; the slab bottom steel bar is fixedly arranged inside the fully prefabricated area of ​​the floor slab and the semi-prefabricated area of ​​the floor slab and close to the lower surfaces of the fully prefabricated area of ​​the floor slab and the semi-prefabricated area of ​​the floor slab;

[0008] The connecting components include: inter-plate connecting components and connecting beam connecting components; the inter-plate connecting components are fixedly arranged at the upper ends and / or above several of the semi-prefabricated areas of the floor slabs; the connecting beam connecting components are fixedly arranged at the upper ends of the connection between two semi-prefabricated areas of the floor slabs and at the outer sides of the beam molds at corresponding positions.

[0009] Furthermore, the thickness of the semi-prefabricated area of ​​the floor slab is smaller than the thickness of the fully prefabricated area of ​​the floor slab.

[0010] Furthermore, a plurality of the slab surface steel bars are horizontally cross-arranged inside the fully prefabricated area of ​​the floor slab to form transverse stress-bearing bars and longitudinal stress-bearing bars.

[0011] Furthermore, a plurality of the slab bottom steel bars are horizontally cross-arranged inside the fully prefabricated area of ​​the slab and the semi-prefabricated area of ​​the slab to form transverse stress-bearing bars and longitudinal stress-bearing bars.

[0012] Furthermore, the inter-plate connecting components include a first connecting bar, a second connecting bar, a third connecting bar and a fourth connecting bar; the first connecting bar is fixedly arranged on the outside of the fully prefabricated area of ​​the floor slab and is located above the semi-prefabricated area of ​​the floor slab, and is an exposed section of the plate surface reinforcement; the second connecting bar is fixedly arranged above the semi-prefabricated area of ​​the floor slab and its two ends are respectively parallel to and fixedly connected to two corresponding first connecting bars; the third connecting bar is fixedly arranged at the upper end of the second connecting bar and its direction is perpendicular to the second connecting bar; the fourth connecting bar is fixedly arranged at the upper end of the semi-prefabricated area of ​​the floor slab and is located directly below the second connecting bar.

[0013] Furthermore, the length of the first connecting reinforcement is la, and the width of the semi-prefabricated area of ​​the floor slab is 1.5la to 2.5la.

[0014] Furthermore, the inter-plate connecting component includes a truss steel bar, one side of which is fixed to the upper end of the slab bottom steel bar in the semi-prefabricated area of ​​the floor slab and the upper end of the top steel bar is in close contact with the bottom end of the first connecting bar.

[0015] Furthermore, the connecting beam connection component includes: connecting beam negative moment reinforcement, first stirrups, fifth connecting reinforcement and second stirrups; the connecting beam negative moment reinforcement is horizontally and evenly distributed at the upper end of the connection between the two semi-prefabricated areas of the floor slabs and fixed to the upper end of the fourth connecting reinforcement; the first stirrup is fixed to the upper end of the semi-prefabricated area of ​​the floor slab and is fixed around the outside of the connecting beam negative moment reinforcement; the fifth connecting reinforcement is fixed to the outside of the beam mold and is located above the partition wall; the second stirrup is fixed around the outside of the fifth connecting reinforcement, and its upper end is fixedly connected to the connecting beam negative moment reinforcement and to the first stirrup.

[0016] Furthermore, the inter-plate connecting component includes: a sixth connecting rib, embedded bolts and channel steel; the sixth connecting rib is fixedly arranged at the upper end of the fourth connecting rib and its direction is perpendicular to the fourth connecting rib; the head of the embedded bolt is fixedly arranged on one side of the bottom steel bar in the semi-prefabricated area of ​​the floor slab and its screw rod extends out of the semi-prefabricated area of ​​the floor slab by a certain length; the channel steel is fixedly arranged above the embedded bolt, with its groove end facing downward and placed horizontally so that the embedded bolts at corresponding positions of the two semi-prefabricated areas of the floor slabs fall into their groove areas at the same time.

[0017] Furthermore, the channel steel includes a first through hole and a second through hole; the first through hole is fixed at the upper end of the channel steel and is compatible with the embedded bolt screw; the second through hole is fixed at the front and rear sides of the channel steel and is compatible with the negative bending moment reinforcement of the connecting beam.

[0018] In general, the above technical solutions conceived by the utility model can achieve the following beneficial effects compared with the prior art:

[0019] (1) The fully prefabricated floor structure of the present invention improves construction efficiency and quality control by constructing the floor body in different areas in a fully prefabricated or semi-prefabricated manner. At the same time, the floor body can be fixed to the top of the beam mold and located on the top of the modular box by hoisting, thereby realizing the rapid installation and disassembly of modular buildings. Secondly, the setting of the connecting parts enables a firm connection between the floor bodies and the outer connecting beams, thereby improving the stability and bearing capacity of the overall structure. Through the fully prefabricated design and construction, the impact of on-site construction on the environment and the time of high-altitude operations are reduced, the construction safety and construction speed are improved, and the construction cost and resource consumption are reduced.

[0020] (2) The fully prefabricated floor structure of the present invention ensures the accuracy of the dimensions of the floor body by fully prefabricating and semi-prefabricating the floor body in different areas. At the same time, the production and maintenance of the floor body are carried out simultaneously and are not affected by the on-site weather and other construction activities. This shortens the production and preparation time, helps to reduce material waste, and improves material utilization.

[0021] (3) The fully prefabricated floor structure of the present invention is characterized by orderly laying the inter-slab connection components and the connecting beam connection components and then pouring concrete, so that the floor bodies and the floor bodies and the connecting beams on the outside are fixedly connected to form a whole. After the concrete hardens, its internal steel grid plays a role in strengthening the skeleton, and the connection components provide additional anchor points, further enhancing the overall stability of the structure, helping to improve the integrity between the floor bodies and the floor bodies and the connecting beams on the outside. At the same time, this structure can simplify the on-site construction process and improve construction efficiency.

[0022] (4) The fully prefabricated floor structure of the present invention forms a stable steel skeleton above the two semi-prefabricated areas of the floor through the second connecting ribs and the third connecting ribs, which are used as tensile steel bars to transfer loads and ensure stable connections between the floor bodies.

[0023] (5) The fully prefabricated floor structure of the utility model is fixedly arranged on the outside of the fifth connecting bar by the second stirrup, and its upper end is fixedly connected to the negative bending moment reinforcement of the connecting beam and the first stirrup, so as to ensure that the floor body is fixedly connected to the connecting beam after pouring concrete.

[0024] (6) The fully prefabricated floor structure of the present invention simplifies the construction process of the connecting beam, reduces material waste, improves construction efficiency, and enhances structural integrity and construction quality by using the beam mold as the lateral aluminum mold of the connecting beam and the partition wall part as the bottom mold of the connecting beam.

[0025] (7) The fully prefabricated floor structure of the utility model fixes the two floor bodies by the embedded bolts and the channel steel, which helps to reduce the relative displacement and structural deformation between the floor bodies, ensure the stability and safety of the building during use, and at the same time, reduce the processes such as welding and binding, simplify the construction process, thereby improving construction efficiency and shortening the construction period. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 This is a top view of the floor slab body of Example 1 of the utility model;

[0027] Figure 2 It is a cross-sectional view at 1-1 of Example 1 of the utility model;

[0028] Figure 3 It is a cross-sectional view at 2-2 of Example 1 of the utility model;

[0029] Figure 4 This is a top view of the connection of the fully prefabricated floor structure of Example 1 of the utility model;

[0030] Figure 5 This is a front view of the connection of the fully prefabricated floor structure of Example 1 of the utility model;

[0031] Figure 6 This is a top view of the floor slab body of Example 2 of the utility model;

[0032] Figure 7 It is a cross-sectional view at 3-3 of Example 2 of the utility model;

[0033] Figure 8 It is a cross-sectional view at 4-4 of Example 2 of the utility model;

[0034] Fig. 9 This is a top view of the connection of the fully prefabricated floor structure of Example 2 of the utility model;

[0035] Fig.10 This is a front view of the connection of the fully prefabricated floor structure of Example 2 of the utility model;

[0036] Fig.11 This is a bottom view of the channel steel of Example 2 of the utility model.

[0037] In all the accompanying drawings, the same figure numbers represent the same technical features, specifically: 1-beam formwork, 2-partition wall, 3-fully prefabricated area of ​​floor slab, 4-semi-prefabricated area of ​​floor slab, 5-slab surface reinforcement, 6-slab bottom reinforcement, 7-first connecting reinforcement, 8-second connecting reinforcement, 9-third connecting reinforcement, 10-fourth connecting reinforcement, 11-truss reinforcement, 12-negative bending moment reinforcement of connecting beam, 13-first stirrup, 14-fifth connecting reinforcement, 15-second stirrup, 16-sixth connecting reinforcement, 17-embedded bolts, 18-channel steel, 19-first through hole, 20-second through hole, 21-connecting beam. DETAILED DESCRIPTION

[0038] In order to make the purpose, technical solution and advantages of the utility model more clear, the utility model is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the utility model and are not used to limit the utility model. In addition, the technical features involved in each embodiment of the utility model described below can be combined with each other as long as they do not conflict with each other.

[0039] Example 1

[0040] like Figures 1 to 5 As shown, the utility model provides a fully prefabricated floor structure for modular buildings, comprising: a floor body and connecting components; wherein the floor body is fixedly arranged on the upper end of the beam mold 1 and located on the top of the modular box after being fully prefabricated or semi-prefabricated and cast in different areas; the connecting components are fixedly arranged between and on the outside of several of the floor bodies; the utility model improves construction efficiency and quality control by adopting a fully prefabricated or semi-prefabricated method to construct the floor body in different areas; the floor body can be fixed on the top of the beam mold 1 and located on the top of the modular box by hoisting, thereby realizing rapid installation and disassembly of modular buildings; secondly, the setting of the connecting components enables a firm connection to be formed between the floor bodies and the outer connecting beam 21, thereby improving the stability and bearing capacity of the overall structure; through the fully prefabricated design and construction, the impact of on-site construction on the environment and the time of high-altitude operations are reduced, the construction safety and speed are improved, and the construction cost and resource consumption are reduced.

[0041] Specifically, Figures 1 to 5 As shown, the floor slab body provides a stable bearing platform and separation space for the entire modular box, ensuring that the upper load can be effectively transferred to the supporting structure below, while creating a usable living or working space inside the building, which includes: a fully prefabricated floor slab area 3, a semi-prefabricated floor slab area 4, a slab surface reinforcement 5 and a slab bottom reinforcement 6;

[0042] The floor slab fully prefabricated area 3 is fixedly arranged in the middle of the floor slab body and is rectangular in shape as a whole;

[0043] The semi-prefabricated floor area 4 is fixedly surrounded by the fully prefabricated floor area 3, and its thickness is less than that of the fully prefabricated floor area 3, and the whole structure is a rectangular frame;

[0044] The plate surface reinforcement 5 is fixedly arranged inside the fully prefabricated area 3 of the floor slab and close to the upper surface of the fully prefabricated area 3 of the floor slab, and a plurality of the plate surface reinforcement 5 are horizontally cross-arranged inside the fully prefabricated area 3 of the floor slab to form transverse force reinforcement and longitudinal force reinforcement;

[0045] The bottom steel bars 6 are fixedly arranged inside the fully prefabricated area 3 and the semi-prefabricated area 4 of the floor slab and close to the lower surface of the fully prefabricated area 3 and the semi-prefabricated area 4 of the floor slab. A plurality of the bottom steel bars 6 are horizontally cross-arranged inside the fully prefabricated area 3 and the semi-prefabricated area 4 of the floor slab to form transverse force bars and longitudinal force bars.

[0046] During the prefabrication of the floor slab body, the full prefabrication of the full prefabrication area 3 of the floor slab refers to the modular casting using concrete, the slab surface steel bars 5 and the slab bottom steel bars 6 in this area; the semi-prefabrication of the semi-prefabrication area 4 of the floor slab refers to the modular casting using concrete, the slab bottom steel bars 6 and some connecting parts in this area, and reserving space above the semi-prefabrication area 4 of the floor slab for subsequent laying of the connecting parts and concrete casting, so as to achieve a stable connection between the floor slab bodies; through this construction method, the accuracy of the size of the floor slab body is ensured, and at the same time, the production and maintenance of the floor slab body are carried out simultaneously, which is not affected by the on-site weather and other construction activities, shortening the production and preparation time, helping to reduce material waste and improve material utilization.

[0047] Preferably, the slab surface steel bars 5 and the slab bottom steel bars 6 provide tensile strength within the slab body to prevent cracks and damage to the slab body, thereby ensuring the stability and safety of the entire structure.

[0048] Specifically, Figures 1 to 5 As shown, the connecting components are used to connect the floor slab body and the supporting structure, evenly distribute the weight of the floor slab body to the supporting structure, prevent the floor slab body from being deformed or broken due to uneven force, and play a role of fixing and positioning, ensuring that the relative position of the floor slab body and the supporting structure will not change, thereby ensuring the overall shape and use function of the building; the connecting components include: inter-board connecting components and connecting beam connecting components;

[0049] The inter-plate connecting component is fixedly arranged on the upper end and / or above the plurality of the semi-prefabricated floor slab areas 4, and is used to stably connect the plurality of the fully prefabricated floor slab areas 3 to ensure structural stability, and includes: a first connecting rib 7, a second connecting rib 8, a third connecting rib 9, a fourth connecting rib 10, and a truss steel bar 11;

[0050] The first connecting bar 7 is fixedly arranged outside the fully prefabricated area 3 of the floor slab and above the semi-prefabricated area 4 of the floor slab. It is the exposed section of the plate surface reinforcement 5 and has a length of la. It is used as a tensile reinforcement to connect the surrounding components to prevent cracks or damage to the fully prefabricated floor slab structure.

[0051] Preferably, the length la of the first connecting bar 7 is the minimum anchorage length of the tensioned steel bar;

[0052] Preferably, the width of the semi-prefabricated area 4 of the floor slab is 1.51a to 2.51a;

[0053] The second connecting rib 8 is fixedly arranged above the semi-prefabricated area 4 of the floor slab, and its two ends are respectively parallel to and fixedly connected with two corresponding first connecting ribs 7, so as to stably connect a plurality of the fully prefabricated areas 3 of the floor slab, and ensure the stability of the overall structure;

[0054] The third connecting rib 9 is fixedly arranged on the upper end of the second connecting rib 8 and is perpendicular to the second connecting rib 8; the second connecting rib 8 and the third connecting rib 9 form a stable steel bar skeleton above the two semi-prefabricated areas 4 of the floor slab, which is used as a tensile steel bar to transfer loads and ensure the stability of the connection between the floor slab bodies;

[0055] The fourth connecting rib 10 is fixedly arranged at the upper end of the semi-prefabricated area 4 of the floor slab and is located directly below the second connecting rib 8, and is used to connect and fix the semi-prefabricated area 4 of the floor slab, bear the bending moment caused by the vertical load in the connection area of ​​the fully prefabricated floor slab structure and resist the tensile stress caused by the bending moment, prevent cracks and damage at the connection, and ensure structural stability;

[0056] The cross section of the truss steel bar 11 is triangular, and parallel steel bars are fixed at the three vertices and fixed by welding a number of 10-20 cm steel bars. One side of the truss steel bar 11 is fixed to the upper end of the bottom steel bar 6 in the semi-prefabricated area 4 of the floor slab, and the upper end of the top steel bar is in close contact with the bottom end of the first connecting bar 7.

[0057] The connecting beam connection component is fixedly arranged at the upper end of the connection between the two semi-prefabricated areas 4 of the floor slab and the outer side of the beam mold 1 at the corresponding position, and is used to fix the floor slab body and the connecting beam 21 fixedly arranged on the outer side of the floor slab body, so as to ensure that the forces such as bending moment and shear force are effectively transmitted between the floor slab body and the connecting beam 21, and at the same time meet the structural requirements; the connecting beam connection component includes: connecting beam negative bending moment steel bars 12, first stirrups 13, fifth connecting bars 14 and second stirrups 15;

[0058] A plurality of the negative bending moment reinforcement bars 12 of the connecting beam are evenly distributed horizontally at the upper ends of the connection between the two semi-prefabricated areas 4 of the floor slabs and fixedly arranged at the upper ends of the fourth connecting bars 10, so as to resist the negative bending moment generated by the load and ensure the integrity and durability of the fully prefabricated floor slab structure;

[0059] The first stirrup 13 is fixedly arranged at the upper end of the semi-prefabricated area 4 of the floor slab and is fixedly arranged around the outer side of the negative bending moment reinforcement 12 of the connecting beam, and is used to connect a plurality of the negative bending moment reinforcement 12 of the connecting beam to enhance stability;

[0060] A plurality of the fifth connecting ribs 14 are fixedly arranged on the outside of the beam mold 1 and located above the partition wall 2;

[0061] Preferably, the beam mold 1 is used as the lateral aluminum mold of the connecting beam 21 and has a rough surface. At the same time, the partition wall 2 is the side wall of the modular box, and partially serves as the bottom mold of the connecting beam 21, so as to simplify the construction process of the connecting beam 21, reduce material waste, improve construction efficiency, and enhance structural integrity and construction quality.

[0062] The second stirrup 15 is fixedly arranged around the outside of the fifth connecting bar 14, and the upper end thereof is fixedly connected to the negative moment steel bar 12 of the connecting beam and is fixedly connected to the first stirrup 13, so as to ensure that the floor slab body is fixedly connected to the connecting beam 21 after pouring concrete;

[0063] During the construction of the fully prefabricated floor structure, the inter-slab connecting components and the connecting beam connecting components are laid in order and then concrete is poured, so that the floor bodies and the floor bodies and the connecting beams 21 on the outside are fixedly connected to form a whole. After the concrete hardens, its internal steel grid plays a role in strengthening the skeleton, and the connecting components provide additional anchor points, further enhancing the overall stability of the structure, helping to improve the integrity between the floor bodies and the floor bodies and the connecting beams 21 on the outside. At the same time, this structure can simplify the on-site construction process and improve construction efficiency.

[0064] Working principle: According to the design requirements of the modular box, during the full prefabrication and semi-prefabrication casting of the floor body, the modular box floor, partition wall 2 and beam formwork 1 are constructed at the same time; wherein, the fully prefabricated area 3 of the floor is modularly cast using concrete, the plate surface steel bars 5 and the plate bottom steel bars 6, and the semi-prefabricated area 4 of the floor is modularly cast using concrete, the plate bottom steel bars 6 and the truss steel bars 11, and space is reserved above the semi-prefabricated area 4 of the floor for subsequent laying of the connecting components and concrete pouring; thereafter, the floor body is hoisted to the upper end of the beam formwork 1 and fixed, and the inter-plate connecting components are laid in order between the floor bodies and between the floor bodies and the outer connecting beams 21, and concrete is poured after covering the formwork, so that the fully prefabricated floor structure and the connecting beams 21 are integrally formed.

[0065] Example 2

[0066] like Figures 6 to 11 As shown, the inter-plate connecting component includes: a fourth connecting rib 10, a sixth connecting rib 16, an embedded bolt 17 and a channel steel 18, and the remaining structure is the same as that of embodiment 1;

[0067] Specifically, Figures 6 to 11 As shown, the sixth connecting bar 16 is fixedly arranged on the upper end of the fourth connecting bar 10 and is perpendicular to the fourth connecting bar 10; the fourth connecting bar 10 and the sixth connecting bar 16 form a stable steel bar skeleton at the upper ends of the two floor slab semi-prefabricated areas 4, which is used as a tensile steel bar to transfer loads and ensure the stable connection between the floor slab bodies;

[0068] The head of the embedded bolt 17 is fixedly arranged on one side of the bottom steel bar 6 in the semi-prefabricated area 4 of the floor slab, and the screw rod thereof extends out of the semi-prefabricated area 4 of the floor slab by a certain length;

[0069] The channel steel 18 is a long steel strip with a groove-shaped cross section, which is fixed above the embedded bolts 17, with its groove end facing downward and placed horizontally so that the embedded bolts 17 at corresponding positions of the two floor slab semi-prefabricated areas 4 fall into its groove area at the same time, and includes a first through hole 19 and a second through hole 20;

[0070] The first through hole 19 is fixedly arranged at the upper end of the channel steel 18 and is adapted to the screw rod of the embedded bolt 17; the channel steel 18 is fixedly connected to the embedded bolt 17 through the first through hole 19 and the nut;

[0071] The second through hole 20 is fixedly arranged at the front and rear sides of the channel steel 18 and is adapted to the negative moment steel bar 12 of the connecting beam, and is used for the negative moment steel bar 12 of the connecting beam to pass through and limit the negative moment steel bar 12 of the connecting beam;

[0072] Preferably, the first stirrups 13 and the channel steels 18 are arranged crosswise to avoid mutual interference;

[0073] Preferably, the length of the channel steel 18 is adapted to the distance between the fourth connecting ribs 10 on the outer sides of the upper ends of the two semi-prefabricated floor slabs 4 to avoid mutual interference;

[0074] Fixing the two floor slab bodies by the embedded bolts 17 and the channel steel 18 helps to reduce the relative displacement and structural deformation between the floor slab bodies, ensure the stability and safety of the building during use, and at the same time, reduce processes such as welding and binding, simplify the construction process, thereby improving construction efficiency and shortening the construction period.

[0075] It should be noted that if the embodiments of the present invention involve directional indications (such as up, down, left, right, front, back...), the directional indications are only used to explain the relative position relationship, movement status, etc. between the components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

[0076] In addition, if there are descriptions involving "first", "second", etc. in the embodiments of the utility model, the descriptions of "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or suggesting their 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 at least one of the features. In addition, the technical solutions between the various embodiments can be combined with each other, but they must be based on the ability of ordinary technicians in the field to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such a combination of technical solutions does not exist and is not within the scope of protection required by the utility model.

[0077] In this patent, the terms "include", "comprises" or any other variations thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also includes other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of more restrictions, the elements defined by the sentence "includes..." do not exclude the presence of other identical elements in the process, method, article or device including the elements.

[0078] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the utility model, rather than to limit it; those skilled in the art will easily understand that the above are only preferred embodiments of the utility model and are not used to limit the utility model. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the utility model should be included in the protection scope of the utility model.

Claims

1. A fully prefabricated floor structure for modular buildings, characterized in that: include: Floor slab body and connecting parts, including: The floor slab body comprises: a floor slab fully prefabricated area (3), a floor slab semi-prefabricated area (4), a slab surface reinforcement (5) and a slab bottom reinforcement (6); the floor slab fully prefabricated area (3) is fixedly arranged in the middle of the floor slab body; the floor slab semi-prefabricated area (4) is fixedly arranged around the floor slab fully prefabricated area (3); the slab surface reinforcement (5) is fixedly arranged inside the floor slab fully prefabricated area (3) and close to the upper surface of the floor slab fully prefabricated area (3); the slab bottom reinforcement (6) is fixedly arranged inside the floor slab fully prefabricated area (3) and the floor slab semi-prefabricated area (4) and close to the lower surfaces of the floor slab fully prefabricated area (3) and the floor slab semi-prefabricated area (4); The connecting components include: inter-plate connecting components and connecting beam connecting components; the inter-plate connecting components are fixedly arranged at the upper ends and / or above a plurality of the semi-prefabricated floor slab areas (4); the connecting beam connecting components are fixedly arranged at the upper ends of the connection between two semi-prefabricated floor slab areas (4) and at the outer sides of the beam moulds (1) at corresponding positions.

2. The fully prefabricated floor structure according to claim 1, characterized in that: The thickness of the semi-prefabricated area (4) of the floor slab is smaller than the thickness of the fully prefabricated area (3) of the floor slab.

3. The fully prefabricated floor structure according to claim 1, characterized in that: A plurality of the slab surface steel bars (5) are horizontally cross-arranged inside the fully prefabricated area (3) of the floor slab to form transverse stress-bearing bars and longitudinal stress-bearing bars.

4. The fully prefabricated floor structure according to claim 1, characterized in that: A plurality of the slab bottom steel bars (6) are horizontally cross-arranged inside the fully prefabricated area (3) and the semi-prefabricated area (4) of the slab to form transverse force-bearing bars and longitudinal force-bearing bars.

5. The fully prefabricated floor structure according to any one of claims 1 to 4, characterized in that: The inter-plate connecting component comprises a first connecting rib (7), a second connecting rib (8), a third connecting rib (9) and a fourth connecting rib (10); the first connecting rib (7) is fixedly arranged on the outside of the fully prefabricated area (3) of the floor slab and is located above the semi-prefabricated area (4) of the floor slab, and is an exposed section of the plate surface reinforcement (5); the second connecting rib (8) is fixedly arranged above the semi-prefabricated area (4) of the floor slab and its two ends are respectively parallel to and fixedly connected with two corresponding first connecting ribs (7); the third connecting rib (9) is fixedly arranged on the upper end of the second connecting rib (8) and its direction is perpendicular to the second connecting rib (8); the fourth connecting rib (10) is fixedly arranged on the upper end of the semi-prefabricated area (4) of the floor slab and is located directly below the second connecting rib (8).

6. The fully prefabricated floor structure according to claim 5, characterized in that: The length of the first connecting rib (7) is la, and the width of the semi-prefabricated area (4) of the floor slab is 1.5la to 2.5la.

7. The fully prefabricated floor structure according to claim 5, characterized in that: The inter-plate connecting component comprises a truss steel bar (11), one side of which is fixed to the upper end of the slab bottom steel bar (6) in the semi-prefabricated area (4) of the floor slab and the upper end of the top steel bar is in close contact with the bottom end of the first connecting bar (7).

8. The fully prefabricated floor structure according to claim 5, characterized in that: The connecting beam connection component comprises: a connecting beam negative bending moment reinforcement (12), a first stirrup (13), a fifth connecting reinforcement (14) and a second stirrup (15); the connecting beam negative bending moment reinforcement (12) is evenly distributed horizontally at the upper end of the connection between the two semi-prefabricated areas (4) of the floor slabs and is fixedly arranged at the upper end of the fourth connecting reinforcement (10); the first stirrup (13) is fixedly arranged at the upper end of the semi-prefabricated area (4) of the floor slab and is fixedly arranged around the outer side of the connecting beam negative bending moment reinforcement (12); the fifth connecting reinforcement (14) is fixedly arranged at the outer side of the beam mold (1) and is located above the partition wall (2); the second stirrup (15) is fixedly arranged around the outer side of the fifth connecting reinforcement (14), and its upper end is fixedly connected to the connecting beam negative bending moment reinforcement (12) and fixedly connected to the first stirrup (13).

9. The fully prefabricated floor structure according to claim 8, characterized in that: The inter-plate connecting component comprises: a sixth connecting rib (16), an embedded bolt (17) and a channel steel (18); the sixth connecting rib (16) is fixedly arranged at the upper end of the fourth connecting rib (10) and is perpendicular to the fourth connecting rib (10); the head of the embedded bolt (17) is fixedly arranged at one side of the bottom steel bar (6) in the semi-prefabricated area (4) of the floor slab and its screw rod extends out of the semi-prefabricated area (4) of the floor slab by a certain length; the channel steel (18) is fixedly arranged above the embedded bolt (17) and its groove end is downwardly and horizontally placed so that the embedded bolts (17) at corresponding positions of the two semi-prefabricated areas (4) of the floor slabs fall into its groove area at the same time.

10. The fully prefabricated floor structure according to claim 9, characterized in that: The channel steel (18) comprises a first through hole (19) and a second through hole (20); the first through hole (19) is fixedly arranged at the upper end of the channel steel (18) and is adapted to the screw rod of the embedded bolt (17); the second through hole (20) is fixedly arranged at the front and rear sides of the channel steel (18) and is adapted to the negative moment reinforcement (12) of the connecting beam.

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