Full-precast steel beam dense rib composite floor

Abstract

The application relates to the technical field of prefabricated floors, and provides a full-prefabricated steel beam dense-rib composite floor, which comprises a bearing beam frame, a concrete floor and a prefabricated bottom plate, wiring hole groups are arranged on the bearing beam frame, the concrete floor is connected to the top of the bearing beam frame, the prefabricated bottom plate is connected to the bottom of the bearing beam frame, wiring cavities are formed between the prefabricated bottom plate and the concrete floor, the prefabricated bottom plate is detachably connected with the bearing beam frame, the bearing beam frame is composed of longitudinally-arranged beams and transversely-arranged beams which are embeddedly connected, and a connector is arranged for connecting the prefabricated bottom plate and the bearing beam frame. The application is convenient for internal wiring of the floor, the prefabricated bottom plate is detachable, and the installation and later maintenance of pipelines are facilitated. Meanwhile, through reasonable beam body structure and connector design, the overall stability and connection reliability of the floor are effectively improved.

Description

Technical Field

[0001] This application relates to the technical field of precast floor slabs, and in particular to a fully precast steel beam ribbed composite floor slab. Background Technology

[0002] Precast floor slabs are an important product of the development of industrialized construction and are widely used in modern building structures. They are floor slab components that are prefabricated in a factory according to design requirements, then transported to the construction site for hoisting, splicing, and overall processing to ultimately form a complete floor structure system.

[0003] In the construction process using precast floor slabs, the layout of pipelines within the floor slab is a crucial technical aspect. Because precast floor slabs are prefabricated in a factory and then hoisted and assembled on-site, their internal space and structure are subject to certain limitations. Therefore, pipeline layout typically needs to be planned during the prefabrication stage. For example, during the production of precast floor slabs, electrical conduits are pre-embedded within the slab according to the design drawings, and locations for junction boxes are also reserved.

[0004] However, once the location, direction, and junction box coordinates of the pipelines are fixed during factory production, it is difficult to modify or adjust the pipeline layout if design changes occur during on-site construction. Furthermore, if the electrical pipelines are not precisely coordinated with the structural reinforcement during pre-installation, the wiring path may need to pass through areas with dense main reinforcement, prestressed tendons, or stirrups, forcing the structural reinforcement to avoid the wiring path and thus weakening the structure's load-bearing capacity. Additionally, since the pipelines are completely enclosed within the floor slab, if a line fault occurs or expansion / upgrade is needed, repair or replacement can only be done by excavating trenches, which will compromise the overall structural integrity. Summary of the Invention

[0005] To address the problems of difficult maintenance of pipelines in precast floor slabs and the potential damage to the floor structure during expansion and upgrades, this application provides a fully precast steel beam ribbed composite floor slab.

[0006] This application provides a fully prefabricated steel beam ribbed composite floor slab, employing the following technical solution:

[0007] A fully prefabricated steel beam ribbed composite floor slab, comprising:

[0008] A load-bearing beam frame, wherein a wiring hole group is provided on the load-bearing beam frame;

[0009] A concrete floor slab is connected to the top of the load-bearing beam frame;

[0010] A precast base plate is connected to the bottom of the load-bearing beam frame. A wiring cavity is formed between the precast base plate and the concrete floor slab. The precast base plate and the load-bearing beam frame are detachably connected.

[0011] By adopting the above technical solution, multiple precast steel beam ribbed composite floor slabs are interconnected in the construction area to form an integral floor slab during construction. The wiring holes on the load-bearing beams provide channels for pipeline installation, and the wiring cavities serve as internal wiring spaces within the floor slab, facilitating flexible pipeline arrangement. The detachable precast base plates allow for convenient localized inspection and replacement of pipelines within the wiring cavities without the need for slotting, ensuring the integrity of the floor structure.

[0012] Optionally, the load-bearing beam frame includes longitudinal beams and transverse beams, with multiple longitudinal beams arranged in parallel and multiple transverse beams spaced apart along the length of the longitudinal beams;

[0013] The transverse beam is arranged perpendicular to the longitudinal beam, and the transverse beam and the longitudinal beam are interlocked and connected.

[0014] The wiring hole group includes a first wiring hole opened on the transverse beam and a second wiring hole opened on the longitudinal beam. The first wiring hole is provided in a plurality of spaces along the length of the transverse beam, and the second wiring hole is provided in a plurality of spaces along the length of the longitudinal beam.

[0015] By adopting the above technical solution, the load-bearing beam frame is composed of longitudinal beams and transverse beams connected together, which enhances the structural stability of the load-bearing beam frame; multiple first wiring holes and second wiring holes are opened on the transverse beams and longitudinal beams respectively, which facilitates the flexible arrangement of pipelines on the load-bearing beam frame and cooperates with the wiring cavity between the precast base plate and the concrete floor slab, further facilitating the layout and adjustment of pipelines.

[0016] Optionally, the longitudinal beam includes a longitudinal web, an upper flange connected to one end of the longitudinal web, and a lower flange connected to the other end of the longitudinal web.

[0017] The transverse beam includes a transverse web, a top flange connected to one end of the transverse web, and a bottom flange connected to the other end of the transverse web.

[0018] Both the upper flange and the top flange are located within the concrete floor slab.

[0019] By adopting the above technical solution, the longitudinal beam is composed of a longitudinal web, an upper flange, and a lower flange, and the transverse beam is composed of a transverse web, a top flange, and a bottom flange. This structural design improves the structural strength and stability of the longitudinal and transverse beams themselves. Furthermore, the upper flange and the top flange are located within the concrete floor slab, making the connection between the load-bearing beam frame and the concrete floor slab more stable, thereby enhancing the load-bearing capacity and overall performance of the entire precast steel beam ribbed composite floor slab.

[0020] Optionally, the width of the lower flange is greater than that of the upper flange, and the width of the bottom flange is greater than that of the top flange.

[0021] By adopting the above technical solution, the width of the lower flange and bottom flange is increased, which can enhance the load-bearing capacity and stability of the bottom of the load-bearing beam frame, making the floor structure more stable, and at the same time providing a more reliable support foundation for the connection between the precast base plate and the load-bearing beam frame.

[0022] Optionally, the thickness of the transverse beam embedded in the concrete floor slab is 3 / 5 to 4 / 5 of the total thickness of the concrete floor slab, and the thickness of the longitudinal beam embedded in the concrete floor slab is 3 / 5 to 4 / 5 of the total thickness of the concrete floor slab.

[0023] By adopting the above technical solution, the transverse and longitudinal beams are embedded into the concrete floor slab with appropriate thickness, which enables the load-bearing beam frame to be better integrated with the concrete floor slab, enhances the overall structural strength and stability of the fully precast steel beam ribbed composite floor slab, and optimizes the stress performance of the floor slab.

[0024] Optionally, the thickness of the transverse beam outside the concrete floor slab is 2 / 3 to 3 / 4 of its total thickness, and the thickness of the longitudinal beam outside the concrete floor slab is 2 / 3 to 3 / 4 of its total thickness.

[0025] By adopting the above technical solution, the proportion of the thickness of the transverse and longitudinal beams outside the concrete floor slab to their total thickness is limited to 2 / 3-3 / 4, which can ensure sufficient wiring cavity space, facilitate pipeline layout, maintenance and upgrades, and improve wiring flexibility.

[0026] Optionally, it also includes a connector, which includes a connecting seat and a plug-in bracket. Several connecting seats are connected to both the lower flange and the bottom flange, and several plug-in brackets are passed through each of the precast base plates.

[0027] The connecting seat and the plug-in bracket are provided in a one-to-one correspondence, and one end of the plug-in bracket is inserted into the connecting seat.

[0028] By adopting the above technical solution, connecting seats are set on the lower flange and bottom flange of the load-bearing beam frame, and plug-in brackets are inserted through the precast base plate. The two correspond one-to-one, and one end of the plug-in bracket is inserted into the connecting seat. The friction between the plug-in bracket and the connecting seat realizes the detachable connection between the precast base plate and the load-bearing beam frame, which facilitates the maintenance and local expansion and upgrading of the wiring in the wiring cavity in the later stage, and avoids damage to the floor structure.

[0029] Optionally, the plug-in support rod includes a rod body and an operating plate fixed to one end of the rod body. Several elastic protrusions are fixed on the outer side wall of the rod body, and the elastic protrusions gradually shrink away from the axis of the plug-in support rod.

[0030] The connecting seat includes a connecting cylinder, which is inserted through and fixedly connected to the lower flange or bottom flange. The inner sidewall of the connecting cylinder is provided with several snap-fit ​​grooves for accommodating the elastic protrusion.

[0031] By adopting the above technical solution, during the connection process, the elastic protrusion is compressed when the rod is inserted into the connecting cylinder. When it moves to the snap-fit ​​groove position, the elastic protrusion returns to its original shape and snaps into the snap-fit ​​groove, achieving a stable connection between the insertion bracket and the connecting seat, thereby ensuring a stable connection between the precast base plate and the load-bearing beam frame. During disassembly, applying external force causes the elastic protrusion to contract again and disengage from the snap-fit ​​groove, allowing the insertion bracket to be pulled out of the connecting seat, thus separating the precast base plate from the load-bearing beam frame. This ensures the stability of the connection and simplifies the connection and disassembly operations.

[0032] Optionally, the connecting seat further includes a load-bearing lifting block, which is disposed on the side of the lower flange or bottom flange away from the precast base plate. One end of the connecting cylinder is connected to the load-bearing lifting block, and the snap-fit ​​groove is annular.

[0033] The load-bearing block has a connecting groove inside, and a mating block is fixed on the inner side wall of the connecting groove. The end of the rod away from the operating tray is provided with a mating groove for the mating block to be accommodated.

[0034] When one end of the rod rotates within the connecting groove, the mating block can enter or disengage from the mating groove.

[0035] By adopting the above technical solution, a load-bearing lifting block and a connecting groove are added inside the connector seat, and a mating groove is set on the rod body. A mating locking block is fixed to the inner side wall of the connecting groove. When the rod body rotates in the connecting groove, the mating locking block can enter or disengage from the mating groove. This allows the connector to provide a more stable and reliable connection when connecting the precast base plate and the load-bearing beam, effectively enhancing the stability and load-bearing capacity of the overall structure. To achieve connection, the rod body is inserted into the connecting cylinder, with one end of the rod body entering the connecting groove of the load-bearing lifting block. Rotating the rod body causes the mating locking block to enter the mating groove, completing the connection. When disassembly is required, the rod body is rotated in the opposite direction to disengage the mating locking block from the mating groove, allowing the rod body to be pulled out of the connector seat, thus separating the precast base plate and the load-bearing beam.

[0036] Optionally, the precast base plate is provided with an installation groove for the operating tray to be accommodated, and the operating tray is provided with a positioning groove on its end face. Each of the installation grooves is provided with a first directional groove and a second directional groove at intervals around its periphery.

[0037] When the operating plate is rotated so that the positioning groove corresponds to the first directional groove, the mating groove can be inserted into the connecting groove. When the operating plate is rotated again so that the positioning groove corresponds to the second directional groove, the mating block enters the mating groove.

[0038] By adopting the above technical solution, the positioning groove can cooperate with the first directional groove and the second directional groove respectively. When connecting the precast base plate and the load-bearing beam, it can assist in positioning the relative position of the mating groove and the mating block, which is conducive to the smooth connection and disengagement of the mating groove and the mating block.

[0039] In summary, this application includes at least one of the following beneficial effects:

[0040] 1. The load-bearing beam frame in this application is provided with wiring hole groups, and a wiring cavity is formed between the precast base plate and the concrete floor slab. This allows the position and direction of the pipeline to be flexibly adjusted according to the actual situation during construction. It can effectively cope with changes in on-site construction design and avoid the dilemma of difficulty in modifying the pipeline layout due to design changes, which greatly improves the flexibility and adaptability of construction.

[0041] 2. The precast base plate and the load-bearing beam frame in this application are detachably connected. When a line fault occurs or expansion and upgrade are required, the precast base plate of the area to be constructed can be easily removed for repair or replacement, avoiding the damage to the overall structural integrity of the floor slab caused by the traditional method of slotting repair, and ensuring the stability of the floor slab structure.

[0042] 3. In this application, the width of the lower flange is greater than that of the upper flange, the width of the bottom flange is greater than that of the top flange, and the specific thickness design of the transverse beams and longitudinal beams embedded in the concrete floor slab together optimize the stress distribution of the floor slab, thereby significantly improving its overall mechanical performance and stability under different load conditions. Attached Figure Description

[0043] Figure 1 This is a schematic diagram of the overall structure of the fully prefabricated steel beam ribbed composite floor slab in the embodiments of this application;

[0044] Figure 2 This is a schematic diagram of the fully prefabricated steel beam ribbed composite floor structure when the concrete floor slab is cut in the embodiment of this application;

[0045] Figure 3 This is a structural schematic diagram of the load-bearing beam frame in the embodiments of this application;

[0046] Figure 4 This is a partial cross-sectional structural schematic diagram of the fully prefabricated steel beam ribbed composite floor slab in the embodiments of this application;

[0047] Figure 5 This is an exploded view of the connector in an embodiment of this application;

[0048] Figure 6 This is a partial structural schematic diagram of the fully prefabricated steel beam ribbed composite floor slab that highlights the first and second directional grooves in the embodiments of this application;

[0049] Explanation of reference numerals in the attached drawings: 1. Load-bearing beam frame; 11. Longitudinal beam; 111. Longitudinal web; 1111. Second wiring hole; 112. Upper flange; 113. Lower flange; 12. Transverse beam; 121. Transverse web; 1211. First wiring hole; 122. Top flange; 123. Bottom flange; 2. Concrete floor slab; 21. Reinforcing cage; 3. Precast base plate; 31. Installation groove; 32. First directional groove; 33. Second directional groove; 4. Wiring cavity; 5. Connecting seat; 51. Connecting cylinder; 52. Load-bearing lifting block; 521. Connecting groove; 522. Matching block; 6. Insertion bracket; 61. Rod body; 62. Operating plate; 621. Positioning groove; 622. Operating clearance groove; 63. Elastic protrusion; 64. Matching groove body. Detailed Implementation

[0050] The following is in conjunction with the appendix Figure 1 -Appendix Figure 6 This application will be described in further detail.

[0051] This application provides a fully prefabricated steel beam ribbed composite floor system.

[0052] Reference Figure 1 and Figure 2 The fully precast steel beam ribbed composite floor system includes a load-bearing beam frame 1, a concrete floor slab 2, a precast base slab 3, and connectors. The concrete floor slab 2 is connected to the top of the load-bearing beam frame 1, and the precast base slab 3 is detachably connected to the bottom of the load-bearing beam frame 1 via connectors. A wiring cavity 4 is formed between the precast base slab 3 and the concrete floor slab 2, and wiring holes are provided on the load-bearing beam frame 1. The wiring cavity 4 provides independent space for pipelines. In case of line faults or the need for expansion and upgrades, the precast base slab 3 can be directly disassembled and reinstalled, facilitating pipeline maintenance and replacement without damaging the overall floor structure. The wiring holes facilitate the passage and layout of pipelines on the load-bearing beam frame 1.

[0053] Specifically, the load-bearing beam frame 1 includes longitudinal beams 11 and transverse beams 12. Multiple longitudinal beams 11 are arranged in parallel, and multiple transverse beams 12 are spaced apart along the length of the longitudinal beams 11. At the intersection of the longitudinal beams 11 and the transverse beams 12, a fitting groove is provided on the longitudinal beam 11 for the transverse beam 12 to insert into, achieving a fitting connection between the transverse beam 12 and the longitudinal beam 11. The fitting points of the transverse beams 12 and the longitudinal beams 11 are further secured by welding. This connection method enhances the overall stability and strength of the load-bearing beam frame 1. In other embodiments, the fitting connection can be achieved by providing slots and blocks at corresponding positions on the longitudinal beams 11 and the transverse beams 12. In this embodiment, three longitudinal beams 11 are arranged at equal intervals, and five transverse beams 12 are arranged at equal intervals.

[0054] Reference Figure 3 The longitudinal beam 11 includes a longitudinal web 111, an upper flange 112 integrally formed at one end of the longitudinal web 111, and a lower flange 113 integrally formed at the other end of the longitudinal web 111. The longitudinal web 111 is typically a flat plate structure, while the upper flange 112 and lower flange 113 are generally horizontal plate structures, perpendicularly connected to the longitudinal web 111, which increases the bending resistance of the longitudinal beam 11. The transverse beam 12 includes a transverse web 121, a top flange 122 integrally formed at one end of the transverse web 121, and a bottom flange 123 integrally formed at the other end of the transverse web 121. The transverse web 121 also serves to bear and transmit forces, and its structure and material are similar to those of the longitudinal web 111. The connection method and function of the top flange 122 and bottom flange 123 to the transverse web 121 are the same as the connection method of the upper flange 112 and lower flange 113 in the longitudinal beam 11. Within the longitudinal beam 11 and the transverse beam 12, the width of the lower flange 113 is greater than that of the upper flange 112, and the width of the bottom flange 123 is greater than that of the top flange 122. This can increase the stability of the bottom of the load-bearing beam frame 1 and better support the pipelines in the precast base plate 3 and the wiring cavity 4.

[0055] Reference Figure 3The wiring hole group includes a first wiring hole 1211 on the transverse beam 12 and a second wiring hole 1111 on the longitudinal beam 11. Multiple first wiring holes 1211 are evenly spaced along the length of the transverse beam 12, and multiple second wiring holes 1111 are evenly spaced along the length of the longitudinal beam 11. The shapes of the first and second wiring holes 1211 and 1111 can be circular, square, etc., and their sizes are determined according to the dimensions and quantity of the pipeline. In this embodiment, the shapes of the first and second wiring holes 1211 and 1111 are specifically set as honeycomb. In this embodiment, both the transverse beam 12 and the longitudinal beam 11 are cut from solid-web H-beam steel webs. When processing the load-bearing beam frame 1, the web of the solid H-beam is cut along a broken line to cut out the required transverse beam 12 and longitudinal beam 11. Then, the transverse web 121 and longitudinal web 111 are welded with equal strength according to the butt welding requirements by means of translation or turning. This makes the height of the section at the welded joint greater than the original section height, which increases the moment of inertia and modulus of the section accordingly. This improves the stiffness and bending bearing capacity of the load-bearing beam frame 1 and achieves the purpose of saving steel consumption.

[0056] In other embodiments, sealing materials such as rubber rings can be provided in the first wiring hole 1211 and the second wiring hole 1111 to prevent dust, moisture and other substances from entering the wiring cavity 4.

[0057] Reference Figure 3 and Figure 4The concrete floor slab 2 includes a reinforcing cage 21. The upper flange 112 and top flange 122 are both located within the concrete floor slab 2, amplifying the combined effect of the materials in the load-bearing beam frame 1 and the concrete floor slab 2. This also enhances the connection strength between the load-bearing beam frame 1 and the concrete floor slab 2, allowing them to work together better and improving overall stiffness and load-bearing capacity. Specifically, the thickness of the end of the transverse beam 12 with its top flange 122 embedded in the concrete floor slab 2 is 3 / 5-4 / 5 of the total thickness of the concrete floor slab 2. The thickness of the end of the longitudinal beam 11 with its upper flange 112 embedded in the concrete floor slab 2 is also 3 / 5-4 / 5 of the total thickness of the concrete floor slab 2. The control wiring hole group is completely located outside the concrete floor slab 2. In this embodiment, the thickness of the end of the transverse beam 12 with its top flange 122 embedded in the concrete floor slab 2, and the thickness of the end of the longitudinal beam 11 with its upper flange 112 embedded in the concrete floor slab 2, are both set to 7 / 10 of the total thickness of the concrete floor slab 2. This embedding method ensures sufficient bonding force between the load-bearing beam frame 1 and the concrete floor slab 2, while also making reasonable use of the space in the concrete floor slab 2. The thickness of the transverse beam 12 outside the concrete floor slab 2 accounts for 2 / 3 to 3 / 4 of its total thickness, and the thickness of the longitudinal beam 11 outside the concrete floor slab 2 accounts for 2 / 3 to 3 / 4 of its total thickness. In this embodiment, the thickness of both the transverse beam 12 and the longitudinal beam 11 outside the concrete floor slab 2 accounts for 7 / 12 of their total thickness. This design provides sufficient space for the wiring cavity 4 while ensuring the load-bearing capacity of the load-bearing beam frame 1.

[0058] Reference Figure 4 and Figure 5 The connector includes a one-to-one corresponding connecting seat 5 and a plug-in bracket 6. Several connecting seats 5 are connected to the lower flange 113 and the bottom flange 123, and several plug-in brackets 6 are threaded through each prefabricated base plate 3. The connecting seats 5 and plug-in brackets 6 are arranged in a one-to-one correspondence. The plug-in bracket 6 includes a rod body 61 and a circular operating plate 62 fixed to one end of the rod body 61. Multiple elastic protrusions 63 are fixed to the outer wall of the rod body 61, and the elastic protrusions 63 gradually taper away from the axis of the plug-in bracket 6. The rod body 61 is generally cylindrical, and the operating plate 62 is a circular or square flat plate for easy operation. The elastic protrusions 63 can be made of elastic materials such as rubber or plastic, and their shapes can be conical, trapezoidal, semi-elliptical, etc.

[0059] Reference Figure 3 and Figure 5The connecting seat 5 includes a connecting cylinder 51 and a load-bearing lifting block 52. The connecting cylinder 51 is inserted through and fixedly connected to the lower flange 113 or the bottom flange 123. Several snap-fit ​​grooves for accommodating the elastic protrusions 63 are formed on the inner wall of the connecting cylinder 51. The snap-fit ​​grooves are arranged in a ring shape. The shape of the snap-fit ​​grooves matches the elastic protrusions 63. When the insertion rod 6 is inserted into the connecting cylinder 51, the elastic protrusions 63 can snap into the snap-fit ​​grooves, realizing the connection between the insertion rod 6 and the connecting seat 5. The connecting cylinder 51 is typically cylindrical and is perpendicularly connected to the lower flange 113 or the bottom flange 123.

[0060] The load-bearing block 52 is located on the side of the lower flange 113 or bottom flange 123 away from the precast base. One end of the connecting cylinder 51 passes through the lower flange 113 or bottom flange 123 and is fixedly connected to the corresponding load-bearing block 52. In this embodiment, the end of the connecting cylinder 51 near the precast base plate 3 is integrally formed with an abutment cap, which is used to abut against the precast base plate 3. One end of the connecting cylinder 51 passes through the lower flange 113 or bottom flange 123 and is threadedly connected to the load-bearing block 52 to realize the connection of the connecting seat 5 on the lower flange 113 or bottom flange 123. In other embodiments, the connecting seat 5 can also be directly fixed to the lower flange 113 or bottom flange 123 by welding.

[0061] The load-bearing block 52 has a connecting groove 521, and a mating block 522 is fixed on the inner side wall of the connecting groove 521. A mating groove 64 is provided at the end of the rod 61 away from the operating support plate 62, and the mating groove 64 accommodates the mating block 522. When one end of the rod 61 rotates within the connecting groove 521, the mating block 522 can enter or disengage from the mating groove 64. The load-bearing block 52 increases the load-bearing capacity of the connecting seat 5, and the mating block 522 and the mating groove 64 further enhance the connection stability between the insertion support rod 6 and the connecting seat 5. In this embodiment, both the mating block 522 and the mating groove 64 are semi-circular.

[0062] Reference Figure 5 and Figure 6The precast base plate 3 has an installation groove 31 for accommodating the operating tray 62. Two operation clearance grooves 622 are also provided on the end face of the operating tray 62, allowing operators to easily rotate the operating tray 62 using tools. In other embodiments, three or four operation clearance grooves 622 may be provided. A positioning groove 621 is also provided on the end face of the operating tray 62, and a first directional groove 32 and a second directional groove 33 are spaced apart on the precast base plate 3. In this embodiment, the first directional groove 32 and the second directional groove 33 have different shapes and are spaced 180° apart around the axis of the operating tray 62. After inserting the plug-in bracket 6 through the precast base plate 3 into the connecting seat 5, rotating the operating plate 62 moves the positioning groove 621 to correspond with the first directional groove 32. Continuing to push the operating plate 62 allows the mating groove 64 to pass into the connecting groove 521. Rotating the operating plate 62 again moves the positioning groove 621 to correspond with the second directional groove 33, at which point the mating block 522 enters the mating groove 64. This design makes the installation and disassembly of the precast base plate 3 and the load-bearing beam frame 1 more convenient and accurate.

[0063] The location and number of connectors on the load-bearing beam 1 can be determined according to actual needs. In this embodiment, multiple connectors are provided at intervals on the outermost transverse beam 12 and longitudinal beam 11 inside the load-bearing beam 1.

[0064] During actual floor slab construction, multiple precast steel beam ribbed composite floor slabs were selected for connection based on the required area and the dimensions of individual slabs. Keyway joints were used between adjacent slabs, eliminating the need for formwork and supports, thus reducing construction difficulty. Furthermore, the precast steel beam ribbed composite floor slabs were bolted to the surrounding supporting structural components, minimizing wet work, accelerating construction speed, and improving efficiency.

[0065] The implementation principle of this embodiment is as follows: By setting up a load-bearing beam frame 1, a concrete floor slab 2, and a precast base slab 3, and forming a wiring cavity 4 between the concrete floor slab 2 and the precast base slab 3, an independent space is provided for the laying of pipelines. The design of the wiring hole group on the detachable precast base slab 3 and the load-bearing beam frame 1 allows for convenient maintenance and replacement of pipelines in case of line faults or when expansion and upgrades are needed, without damaging the overall structure of the floor slab. At the same time, the connector design ensures a stable connection between the precast base slab 3 and the load-bearing beam frame 1, and facilitates disassembly and reinstallation. This effectively solves the problems of difficult maintenance of line faults and damage to the floor structure caused by local expansion and upgrades in existing precast floor slabs, improving the practicality and reliability of precast floor slabs.

[0066] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A full-precast steel beam ribbed composite floor slab, characterized by, The utility model relates to a kind of prefabricated floor and prefabricated floor support structure, including: Load-bearing beam frame (1), the load-bearing beam frame (1) is provided with wiring hole group; Concrete floor (2), is connected to the top of the load-bearing beam frame (1); Prefabricated bottom plate (3), is connected to the bottom of the load-bearing beam frame (1), wiring cavity (4) is formed between the prefabricated bottom plate (3) and the concrete floor (2), and the prefabricated bottom plate (3) is detachably connected with the load-bearing beam frame (1); The load-bearing beam frame (1) includes longitudinal beam (11) and transverse beam (12), a plurality of longitudinal beams (11) are arranged in parallel, and a plurality of transverse beams (12) are arranged along the length direction of the longitudinal beam (11); The wiring hole group includes first wiring hole (1211) opened on the transverse beam (12) and second wiring hole (1111) opened on the longitudinal beam (11), a plurality of first wiring holes (1211) are arranged along the length direction of the transverse beam (12), and a plurality of second wiring holes (1111) are arranged along the length direction of the longitudinal beam (11); The longitudinal beam (11) includes longitudinal web (111), upper flange (112) connected to one end of the longitudinal web (111), and lower flange (113) connected to the other end of the longitudinal web (111); The transverse beam (12) includes transverse web (121), top flange (122) connected to one end of the transverse web (121), and bottom flange (123) connected to the other end of the transverse web (121); The width of the lower flange (113) is greater than that of the upper flange (112), and the width of the bottom flange (123) is greater than that of the top flange (122); Further comprising connector, the connector includes connecting seat (5) and plug-in support rod (6), a plurality of connecting seats (5) are connected to the lower flange (113) and bottom flange (123), and a plurality of plug-in support rods (6) are provided on the prefabricated bottom plate (3); The connecting seat (5) and the plug-in support rod (6) are arranged one by one, and one end of the plug-in support rod (6) is inserted into the connecting seat (5); The plug-in support rod (6) includes rod body (61) and operation support plate (62) fixed to one end of the rod body (61), a plurality of elastic protrusions (63) are fixed to the outer side wall of the rod body (61), and the elastic protrusions (63) are tapered away from the axis of the plug-in support rod (6); The connecting seat (5) includes connecting cylinder (51), the connecting cylinder (51) is provided and fixedly connected to the lower flange (113) or bottom flange (123), a plurality of clamping grooves for accommodating the elastic protrusions (63) are formed on the inner side wall of the connecting cylinder (51); The connecting seat (5) further includes load-bearing lifting block (52), the load-bearing lifting block (52) is arranged on the side of the lower flange (113) or bottom flange (123) away from the prefabricated bottom plate (3), one end of the connecting cylinder (51) is connected to the load-bearing lifting block (52), and the clamping groove is arranged in a ring shape; The load hanging block (52) is internally provided with a connecting groove (521), and a matching clamping block (522) is fixed to the inner side wall of the connecting groove (521); and the rod body (61) is provided with a matching groove body (64) at the end away from the operation supporting plate (62), and the matching groove body (64) is used for accommodating the matching clamping block (522). When the rod body (61) rotates in the connecting groove (521), the matching clamping block (522) can enter or disengage from the matching groove body (64).

2. A full-precast steel beam ribbed composite floor slab according to claim 1, characterized in that: The transverse beam (12) is arranged perpendicularly to the longitudinal beam (11), and the transverse beam (12) and the longitudinal beam (11) are embeddedly connected.

3. A full-precast steel beam ribbed composite floor slab according to claim 2, characterized in that: The upper flange (112) and the top flange (122) are both located in the concrete floor slab (2).

4. A full-precast steel beam ribbed composite floor slab according to claim 3, characterized in that: The thickness of the transverse beam (12) embedded in the concrete floor slab (2) is 3 / 5-4 / 5 of the total thickness of the concrete floor slab (2), and the thickness of the longitudinal beam (11) embedded in the concrete floor slab (2) is 3 / 5-4 / 5 of the total thickness of the concrete floor slab (2).

5. A full-precast steel beam ribbed composite floor slab according to claim 3, characterized in that: The thickness of the transverse beam (12) located outside the concrete floor slab (2) accounts for 2 / 3-3 / 4 of the total thickness, and the thickness of the longitudinal beam (11) located outside the concrete floor slab (2) accounts for 2 / 3-3 / 4 of the total thickness.

6. A full-precast steel beam ribbed composite floor slab according to claim 1, characterized in that: The prefabricated bottom plate (3) is internally provided with a mounting groove (31) used for accommodating the operation supporting plate (62), and the end face of the operation supporting plate (62) is internally provided with a positioning groove (621); and the mounting groove (31) is internally and peripherally provided with a first directional groove (32) and a second directional groove (33) at intervals. When the operation supporting plate (62) is rotated and the positioning groove (621) is moved to correspond to the first directional groove (32), the matching groove body (64) can be arranged into the connecting groove (521); and when the operation supporting plate (62) is rotated again and the positioning groove (621) is moved to correspond to the second directional groove (33), the matching clamping block (522) can be arranged into the matching groove body (64).

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