Fully-prefabricated steel beam dense rib composite floor system

Abstract

The invention relates to the technical field of prefabricated floor slabs, and provides a fully-prefabricated steel beam dense rib composite floor system which comprises a load-bearing beam frame, a concrete floor slab and a prefabricated bottom plate, wiring hole sets are formed in the load-bearing beam frame, the concrete floor slab is connected to the top of the load-bearing beam frame, and the prefabricated bottom plate is connected to the bottom of the load-bearing beam frame. A wiring cavity is formed between the prefabricated bottom plate and the concrete floor, the prefabricated bottom plate is detachably connected with the load-bearing beam frame, the load-bearing beam frame is formed by connecting a longitudinal beam and a transverse beam in an embedded mode, and a connector is further arranged and used for connecting the prefabricated bottom plate and the load-bearing beam frame. Internal wiring of the floor system is facilitated, the prefabricated bottom plate is detachable, and installation and later maintenance of pipelines are facilitated. Meanwhile, through the reasonable beam body structure and connector design, the overall stability and connection reliability of the floor system are effectively improved.

Description

TECHNICAL FIELD

[0001] The application relates to the technical field of prefabricated floors, in particular to a full-prefabricated steel beam dense-rib composite floor. BACKGROUND

[0002] The prefabricated floor is an important product of the development of the building industrialization and is widely applied to modern building structures. The prefabricated floor is a floor component that is prefabricated in a factory according to design requirements, then is transported to a construction site for hoisting, splicing and integration, and finally forms a complete floor structure system.

[0003] In the process of building construction using the prefabricated floor, pipeline arrangement inside the floor is a key technical link. Since the prefabricated floor is prefabricated in a factory and hoisted and spliced on site, the internal space and structure have certain limitations. Usually, the pipeline arrangement needs to be planned in the prefabrication stage. For example, during the production of the prefabricated floor, the electrical line pipe is embedded in the prefabricated floor according to the design drawing, and the terminal box position is reserved.

[0004] However, once the design changes occur in the on-site construction, it is difficult to modify and adjust the pipeline arrangement after the pipeline position, direction and terminal box coordinates are fixed during the factory production. In addition, if the electrical pipeline is not accurately coordinated with the structural reinforcement during embedding, the wiring path may need to pass through the dense area of the main reinforcement, prestressed reinforcement or stirrup, which may weaken the structural bearing capacity of the structural reinforcement to avoid the wiring path. In addition, the pipeline is completely enclosed in the floor, and once a line fault occurs or needs to be expanded and upgraded, it can only be repaired and replaced by trenching, which may damage the overall structural integrity. SUMMARY

[0005] In order to solve the problems that the pipeline arrangement in the prefabricated floor leads to difficult maintenance of line faults in the later period and expansion and upgrading of the floor structure, the application provides a full-prefabricated steel beam dense-rib composite floor.

[0006] The application provides a full-prefabricated steel beam dense-rib composite floor, which adopts the following technical scheme: A full-prefabricated steel beam dense-rib composite floor, comprising: A load-bearing beam frame, wherein a wiring hole group is arranged on the load-bearing beam frame; A concrete floor connected to the top of the load-bearing beam frame; A prefabricated bottom plate connected to the bottom of the load-bearing beam frame, wherein a wiring cavity is formed between the prefabricated bottom plate and the concrete floor, and the prefabricated bottom plate is detachably connected to the load-bearing beam frame.

[0007] By adopting the technical scheme, in construction, multiple full-precast steel beam dense-rib composite floor slabs are connected with each other in a construction area to form an integral floor slab. The wiring hole groups on the load-bearing beam frame provide a laying channel for pipelines, the wiring cavities serve as wiring spaces inside the floor slab, the pipelines can be arranged flexibly, the detachable precast bottom plate facilitates local maintenance and replacement of the pipelines in the wiring cavities without trenching, and the integrity of the floor slab structure is ensured.

[0008] Optionally, the load-bearing beam frame comprises longitudinal beams and transverse beams, a plurality of longitudinal beams are arranged in parallel, and a plurality of transverse beams are arranged at intervals along the length direction of the longitudinal beams. The transverse beams are arranged perpendicularly to the longitudinal beams, and the transverse beams and the longitudinal beams are embeddedly connected. The wiring hole groups comprise first wiring holes arranged on the transverse beams and second wiring holes arranged on the longitudinal beams, a plurality of first wiring holes are arranged at intervals along the length direction of the transverse beams, and a plurality of second wiring holes are arranged at intervals along the length direction of the longitudinal beams.

[0009] By adopting the technical scheme, the load-bearing beam frame is composed of the embeddedly connected longitudinal beams and transverse beams, the structural stability of the load-bearing beam frame is enhanced, a plurality of first wiring holes and second wiring holes are arranged on the transverse beams and longitudinal beams respectively, the pipelines can be arranged flexibly on the load-bearing beam frame, and the wiring cavities between the precast bottom plate and the concrete floor slab are matched to further facilitate the arrangement and adjustment of the pipelines.

[0010] Optionally, the longitudinal beam comprises 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. The transverse beam comprises 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. The upper flange and the top flange are located in the concrete floor slab.

[0011] By adopting the technical scheme, the longitudinal beam is composed of the longitudinal web, the upper flange and the lower flange, and the transverse beam is composed of the transverse web, the top flange and the bottom flange, the structural strength and stability of the longitudinal beam and the transverse beam are improved, the upper flange and the top flange are located in the concrete floor slab, the connection between the load-bearing beam frame and the concrete floor slab is more stable, and the load-carrying capacity and overall performance of the entire full-precast steel beam dense-rib composite floor slab are enhanced.

[0012] Optionally, the lower flange has a greater width than the upper flange, and the bottom flange has a greater width than the top flange.

[0013] By adopting the technical scheme, the width of the lower flange and the bottom flange is large, the load-bearing capacity and stability of the bottom of the load-bearing beam frame are enhanced, the floor structure is more stable, and a more reliable support foundation is provided for the connection of the prefabricated bottom plate and the load-bearing beam frame.

[0014] Optionally, the thickness of the transverse beam embedded in the concrete floor is 3 / 5-4 / 5 of the total thickness of the concrete floor, and the thickness of the longitudinal beam embedded in the concrete floor is 3 / 5-4 / 5 of the total thickness of the concrete floor.

[0015] By adopting the technical scheme, the transverse beam and the longitudinal beam are embedded in the concrete floor with a suitable thickness, so that the load-bearing beam frame and the concrete floor are better combined, the overall structural strength and stability of the full-prefabricated steel beam dense-rib composite floor are enhanced, and the stress performance of the floor is optimized.

[0016] Optionally, the thickness of the transverse beam outside the concrete floor accounts for 2 / 3-3 / 4 of the total thickness of the transverse beam, and the thickness of the longitudinal beam outside the concrete floor accounts for 2 / 3-3 / 4 of the total thickness of the longitudinal beam.

[0017] By adopting the technical scheme, the thickness of the transverse beam and the longitudinal beam outside the concrete floor accounts for 2 / 3-3 / 4 of the total thickness of the transverse beam and the longitudinal beam, respectively, so that sufficient wiring cavity space is ensured, the arrangement, maintenance and upgrading of the pipeline are facilitated, and the flexibility of wiring is improved.

[0018] Optionally, the connector further includes a connecting seat and a plug-in support rod, a plurality of connecting seats are connected to the lower flange and the bottom flange, and a plurality of plug-in support rods are arranged on each prefabricated bottom plate. The connecting seat and the plug-in support rod are arranged one by one, and one end of the plug-in support rod is plugged into the connecting seat.

[0019] By adopting the technical scheme, the connecting seat is arranged on the lower flange and the bottom flange of the load-bearing beam frame, the plug-in support rod is arranged on the prefabricated bottom plate, the connecting seat and the plug-in support rod are arranged one by one, and one end of the plug-in support rod is plugged into the connecting seat, so that the prefabricated bottom plate and the load-bearing beam frame are detachably connected by the friction between the plug-in support rod and the connecting seat, the maintenance and local capacity expansion of the lines in the wiring cavity are facilitated, and the floor structure is avoided from being damaged.

[0020] Optionally, the plug-in support rod includes a rod body and an operation support plate fixed to one end of the rod body, a plurality of elastic protrusions are fixed to the outer side wall of the rod body, and the elastic protrusions are tapered away from the axis of the plug-in support rod. The connecting seat includes a connecting cylinder, the connecting cylinder is arranged on and fixed to the lower flange or the bottom flange, and a plurality of clamping grooves for accommodating the elastic protrusions are formed in the inner side wall of the connecting cylinder.

[0021] By adopting the technical scheme, when the connection is performed, the elastic protrusion is in a compressed state during the insertion of the rod body into the connecting cylinder, and when the elastic protrusion is moved to the clamping groove position, the elastic protrusion restores to the original state and is clamped into the clamping groove, thereby realizing the stable connection of the inserted support rod and the connecting seat, and further realizing the stable connection of the prefabricated floor and the load-bearing beam frame. When disassembling, external force is applied to make the elastic protrusion shrink again and be separated from the clamping groove, so that the inserted support rod can be pulled out of the connecting seat, thereby realizing the separation of the prefabricated floor and the load-bearing beam frame. In this way, the stability of the connection is ensured, and the connection and disassembly operation are more convenient.

[0022] Optionally, the connecting seat further comprises a load-bearing lifting block, the load-bearing lifting block is arranged on the lower flange or the bottom flange away from one side of the prefabricated floor, one end of the connecting cylinder is connected into the load-bearing lifting block, and the clamping groove is arranged in a ring shape. A connecting groove is formed in the load-bearing lifting block, a matching clamping block is fixed on the inner side wall of the connecting groove, and a matching groove body is arranged on the end of the rod body away from the operation support plate, and the matching groove body is used for accommodating the matching clamping block. When the end of the rod body rotates in the connecting groove, the matching clamping block can enter or separate from the matching groove body.

[0023] By adopting the technical scheme, the load-bearing lifting block and the connecting groove are additionally arranged in the connecting seat, the matching groove body is arranged on the rod body, and the matching clamping block is fixed on the inner side wall of the connecting groove. When the rod body rotates in the connecting groove, the matching clamping block can enter or separate from the matching groove body. This makes the connector provide more stable and reliable connection when connecting the prefabricated floor and the load-bearing beam frame, and effectively enhances the stability and load-bearing capacity of the overall structure. When the connection is realized, the rod body is inserted into the connecting cylinder, the end of the rod body enters the connecting groove of the load-bearing lifting block, the rod body is rotated to make the matching clamping block enter the matching groove body, and the connection is completed. When disassembly is required, the rod body is pulled out of the connecting seat by reversely rotating the rod body to make the matching clamping block separate from the matching groove body, thereby realizing the separation of the prefabricated floor and the load-bearing beam frame.

[0024] Optionally, the prefabricated floor is provided with a mounting groove for accommodating the operation support plate, a positioning groove is formed in the end face of the operation support plate, and first and second directional grooves are arranged on the periphery of each mounting groove. The operation support plate is rotated, the positioning groove is moved to correspond to the first directional groove, the matching groove body can be arranged in the connecting groove, and the operation support plate is rotated again, the positioning groove is moved to correspond to the second directional groove, and the matching clamping block enters the matching groove body.

[0025] By adopting the technical scheme, the positioning groove can be matched with the first orientation groove and the second orientation groove respectively, and the relative positions of the matching groove body and the matching clamping block can be assisted in positioning when the prefabricated floor and the load-bearing beam frame are connected, so that the connection and disconnection of the matching groove body and the matching clamping block can be smoothly realized.

[0026] In summary, the present application includes at least one of the following beneficial effects: 1. The load-bearing beam frame in the present application is provided with a wiring hole group, and a wiring cavity is formed between the prefabricated floor and the concrete floor, which enables flexible adjustment of the position and direction of the pipeline according to the actual situation during construction, effectively deals with design changes in site construction, avoids the difficulty of modifying the pipeline layout due to design changes, and greatly improves the flexibility and adaptability of construction; 2. The prefabricated floor and the load-bearing beam frame in the present application are detachably connected, so that when a line fault occurs or expansion and upgrading is required, the prefabricated floor of the area to be constructed can be conveniently detached for maintenance or replacement, avoiding the damage to the overall structural integrity of the floor system in the traditional way of slot repair, and ensuring the stability of the floor structure; 3. In the present application, the lower flange width is greater than the upper flange width, the bottom flange width is greater than the top flange width, and the specific thickness design of the transverse beam and the longitudinal beam embedded in the concrete floor optimizes the stress distribution of the floor system, thereby significantly improving the overall mechanical properties and stability under different load conditions. BRIEF DESCRIPTION OF DRAWINGS

[0027] Figure 1 is a schematic diagram of the overall structure of the full-precast steel beam dense rib composite floor in the embodiment of the present application; Figure 2 is a schematic diagram of the full-precast steel beam dense rib composite floor structure when the concrete floor is cut in the embodiment of the present application; Figure 3 is a schematic diagram of the structure of the load-bearing beam frame in the embodiment of the present application; Figure 4 is a schematic diagram of the partial cross-sectional structure of the full-precast steel beam dense rib composite floor in the embodiment of the present application; Figure 5 is an exploded schematic diagram of the connector in the embodiment of the present application; Figure 6 is a schematic diagram of the partial structure of the full-precast steel beam dense rib composite floor highlighting the first orientation groove and the second orientation groove in the embodiment of the present application; Explanation of reference signs: 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; 21, steel cage; 3, prefabricated base plate; 31, mounting groove; 32, first orientation groove; 33, second orientation groove; 4, wiring cavity; 5, connecting seat; 51, connecting cylinder; 52, load-bearing lifting block; 521, connecting groove; 522, matching clamping block; 6, plug-in supporting rod; 61, rod body; 62, operating supporting plate; 621, positioning groove; 622, operating clearance groove; 63, elastic protrusion; 64, matching groove body. DETAILED DESCRIPTION

[0028] The following will be described in detail with reference to the accompanying drawings. Figure 1 - the accompanying drawings Figure 6 The present application is further described in detail.

[0029] The embodiment of the present application provides a full-prefabricated steel beam dense rib composite floor.

[0030] Reference will be made to Figure 1 and Figure 2 The full-prefabricated steel beam dense rib composite floor comprises a load-bearing beam frame 1, a concrete floor 2, a prefabricated base plate 3 and a connector. The concrete floor 2 is connected to the top of the load-bearing beam frame 1, the prefabricated base plate 3 is detachably connected to the bottom of the load-bearing beam frame 1 through the connector, a wiring cavity 4 is formed between the prefabricated base plate 3 and the concrete floor 2, and a wiring hole group is arranged on the load-bearing beam frame 1. The wiring cavity 4 provides an independent space for pipelines. When a line fault occurs or upgrading is needed, the prefabricated base plate 3 can be directly disassembled and reassembled, so that the pipelines can be maintained and replaced without damaging the overall structure of the floor. The arrangement of the wiring hole group facilitates the crossing and layout of the pipelines on the load-bearing beam frame 1.

[0031] Specifically, the load-bearing beam frame 1 comprises longitudinal beams 11 and transverse beams 12. The longitudinal beams 11 are arranged in parallel in multiple numbers, and the transverse beams 12 are arranged in multiple numbers at intervals along the length direction of the longitudinal beams 11. At the intersection of the longitudinal beams 11 and the transverse beams 12, a fitting groove is formed on the longitudinal beam 11 for the insertion of the transverse beam 12, so as to realize the fitting connection between the transverse beam 12 and the longitudinal beam 11. In addition, the fitting part of the transverse beam 12 and the longitudinal beam 11 is further fixed by welding, which can enhance the overall stability and strength of the load-bearing beam frame 1. In other embodiments, the fitting connection can be realized by arranging clamping grooves and clamping blocks at the corresponding positions of the longitudinal beams 11 and the transverse beams 12. In the embodiment, the longitudinal beams 11 are arranged at equal intervals in three numbers, and the transverse beams 12 are arranged at equal intervals in five numbers.

[0032] Reference will be made to Figure 3The longitudinal beam 11 comprises 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 generally a flat plate structure, and the upper flange 112 and the lower flange 113 are generally horizontal plate structures connected perpendicularly to the longitudinal web 111, which can increase the bending resistance of the longitudinal beam 11. The transverse beam 12 comprises 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 transfer force, and has a structure and material similar to the longitudinal web 111. The top flange 122 and the bottom flange 123 are connected to the transverse web 121 in the same way as the upper flange 112 and the lower flange 113 are connected to the longitudinal web 111. In 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, which can increase the stability of the bottom of the load-bearing beam frame 1 and better support the prefabricated floor 3 and the pipelines in the wiring cavity 4.

[0033] Referring to Figure 3 The wiring hole group comprises first wiring holes 1211 formed on the transverse beam 12 and second wiring holes 1111 formed on the longitudinal beam 11. The first wiring holes 1211 are equally spaced along the length direction of the transverse beam 12, and the second wiring holes 1111 are equally spaced along the length direction of the longitudinal beam 11. The shapes of the first wiring holes 1211 and the second wiring holes 1111 can be circular, square, etc., and their sizes are determined according to the sizes and quantities of the pipelines. In this embodiment, the shapes of the first wiring holes 1211 and the second wiring holes 1111 are specifically set as honeycomb shapes. In this embodiment, the transverse beam 12 and the longitudinal beam 11 are both cut from a solid-web H-shaped steel web. When the load-bearing beam frame 1 is processed, the solid-web H-shaped steel web is cut according to the fold line to cut out the required transverse beam 12 and longitudinal beam 11. Then, the transverse web 121 and the longitudinal web 111 are equally strong welded according to the butt welding requirements by translation or turning, so that the cross-sectional height of the welded part is greater than the original cross-sectional height, and the cross-sectional moment of inertia and the resisting moment are correspondingly increased, thereby improving the stiffness and bending bearing capacity of the load-bearing beam frame 1 and achieving the purpose of saving the amount of steel.

[0034] In other embodiments, sealing materials such as rubber rings can also be arranged in the first wiring holes 1211 and the second wiring holes 1111 to prevent dust, water vapor, etc. from entering the wiring cavity 4.

[0035] Referring to Figure 3 and Figure 4The concrete floor 2 includes a steel cage 21, the upper flange 112 and the top flange 122 are located in the concrete floor 2, and the combination effect of the materials in the load-bearing beam frame 1 and the concrete floor 2 is amplified, and the connection strength between the load-bearing beam frame 1 and the concrete floor 2 is also enhanced, so that they work better in cooperation, and the overall stiffness and bearing capacity are improved. The end of the transverse beam 12 provided with the top flange 122 is embedded in the concrete floor 2 by a thickness of 3 / 5-4 / 5 of the total thickness of the concrete floor 2, and the end of the longitudinal beam 11 provided with the upper flange 112 is embedded in the concrete floor 2 by a thickness of 3 / 5-4 / 5 of the total thickness of the concrete floor 2, and the wiring hole group is completely located outside the concrete floor 2. In this embodiment, the thickness of the end of the transverse beam 12 provided with the top flange 122 embedded in the concrete floor 2 and the thickness of the end of the longitudinal beam 11 provided with the upper flange 112 embedded in the concrete floor 2 are both set to 7 / 10 of the total thickness of the concrete floor 2. This embedding mode can ensure sufficient bonding force between the load-bearing beam frame 1 and the concrete floor 2, and also reasonably utilize the space of the concrete floor 2. The thickness of the transverse beam 12 located outside the concrete floor 2 accounts for 2 / 3-3 / 4 of the total thickness of the transverse beam 12, and the thickness of the longitudinal beam 11 located outside the concrete floor 2 accounts for 2 / 3-3 / 4 of the total thickness of the longitudinal beam 11. In this embodiment, the thickness of the transverse beam 12 located outside the concrete floor 2 and the thickness of the longitudinal beam 11 located outside the concrete floor 2 both account for 7 / 12 of the total thickness of the transverse beam 12 and the longitudinal beam 11 respectively. Such a design can provide sufficient space for the wiring cavity 4 on the premise of ensuring the bearing capacity of the load-bearing beam frame 1.

[0036] With reference to Figure 4 and Figure 5 The connector includes a one-to-one corresponding connecting seat 5 and a plug-in supporting rod 6, and a plurality of connecting seats 5 are connected on the lower flange 113 and the bottom flange 123, and a plurality of plug-in supporting rods 6 are provided on each prefabricated bottom plate 3. The connecting seat 5 and the plug-in supporting rod 6 are one-to-one corresponding. The plug-in supporting rod 6 includes a rod body 61 and a circular operation supporting plate 62 fixed to one end of the rod body 61, a plurality of elastic protrusions 63 are fixed on the outer side wall of the rod body 61, and the elastic protrusions 63 taper away from the axis of the plug-in supporting rod 6. The rod body 61 is generally in a cylindrical structure, and the operation supporting plate 62 is a circular or square plate, which is convenient for operators to operate. The elastic protrusions 63 can be made of materials such as rubber and plastic that have elasticity, and the shape can be conical, trapezoidal, semi-elliptical, etc.

[0037] With reference to Figure 3 and Figure 5The connecting seat 5 comprises a connecting cylinder 51 and a load lifting block 52. The connecting cylinder 51 is arranged through and fixed to the lower flange 113 or the bottom flange 123. A plurality of clamping grooves for accommodating the elastic protrusions 63 are arranged on the inner side wall of the connecting cylinder 51 and arranged in a ring shape. The shape of the clamping grooves is matched with the elastic protrusions 63. When the insertion supporting rod 6 is inserted into the connecting cylinder 51, the elastic protrusions 63 can be clamped into the clamping grooves, so as to realize the connection between the insertion supporting rod 6 and the connecting seat 5. The connecting cylinder 51 is usually in a cylindrical shape and is connected perpendicularly to the lower flange 113 or the bottom flange 123.

[0038] The load lifting block 52 is located on the side of the lower flange 113 or the bottom flange 123 away from the prefabricated base. One end of the connecting cylinder 51 is arranged through the lower flange 113 or the bottom flange 123 and is fixed to the corresponding load lifting block 52. In the embodiment, the one end of the connecting cylinder 51 close to the prefabricated base 3 is integrally formed with an abutting cylinder cap for abutting against the prefabricated base 3. The one end of the connecting cylinder 51 is arranged through the lower flange 113 or the bottom flange 123 and is threadedly connected to the load lifting block 52, so as to realize the connection of the connecting seat 5 on the lower flange 113 or the bottom flange 123. In other embodiments, the connecting seat 5 can also be directly fixed to the lower flange 113 or the bottom flange 123 by welding.

[0039] The load lifting block 52 is located on the side of the lower flange 113 or the bottom flange 123 away from the prefabricated base. One end of the connecting cylinder 51 is arranged through the lower flange 113 or the bottom flange 123 and is fixed to the corresponding load lifting block 52. In the embodiment, the one end of the connecting cylinder 51 close to the prefabricated base 3 is integrally formed with an abutting cylinder cap for abutting against the prefabricated base 3. The one end of the connecting cylinder 51 is arranged through the lower flange 113 or the bottom flange 123 and is threadedly connected to the load lifting block 52, so as to realize the connection of the connecting seat 5 on the lower flange 113 or the bottom flange 123. In other embodiments, the connecting seat 5 can also be directly fixed to the lower flange 113 or the bottom flange 123 by welding.

[0040] Referring to Figure 5 and Figure 6The precast bottom plate 3 is provided with a mounting groove 31 for accommodating the operation supporting plate 62, and two operation accommodating grooves 622 are further provided on the end face of the operation supporting plate 62, which can facilitate the operator to use tools to rotate the operation supporting plate 62 and the like. In other embodiments, the operation accommodating grooves 622 can also be provided with three or four. The operation supporting plate 62 is further provided with a positioning groove 621, and the first directional groove 32 and the second directional groove 33 are provided on the precast bottom plate 3. In this embodiment, the first directional groove 32 and the second directional groove 33 are different in shape, and the first directional groove 32 and the second directional groove 33 are provided at an interval of 180° around the axis of the operation supporting plate 62. After the plug-in supporting rod 6 is inserted into the connecting seat 5 through the precast bottom plate 3, the operation supporting plate 62 is rotated, the positioning groove 621 is moved to correspond to the first directional groove 32, and the cooperating groove body 64 is inserted into the connecting groove 521 by continuously pushing the operation supporting plate 62; the operation supporting plate 62 is rotated again, the positioning groove 621 is moved to correspond to the second directional groove 33, and the cooperating clamping block 522 is inserted into the cooperating groove body 64. This design makes the installation and disassembly of the precast bottom plate 3 and the load-bearing beam frame 1 more convenient and accurate.

[0041] The setting position and the setting number of the connector on the load-bearing beam frame 1 can be confirmed according to actual needs. In this embodiment, a plurality of connectors are provided on the outermost transverse beam 12 and longitudinal beam 11 in the load-bearing beam frame 1.

[0042] In the actual floor construction process, according to the area demand of the construction area and the size of the single full-precast steel beam dense-rib composite floor, a plurality of full-precast steel beam dense-rib composite floors are selected for connection. The key groove tight joint is used between adjacent full-precast steel beam dense-rib composite floors to avoid formwork and support, thereby reducing the construction difficulty. The full-precast steel beam dense-rib composite floor and the surrounding supporting structure member are connected by bolts, which maximally reduces the wet work and speeds up the construction speed and improves the construction efficiency.

[0043] The implementation principle of the embodiment is that the load-bearing beam frame 1, the concrete floor 2 and the precast bottom plate 3 are provided, and the wiring cavity 4 is formed between the concrete floor 2 and the precast bottom plate 3 to provide an independent space for the pipeline layout. The wiring hole group design of the detachable precast bottom plate 3 and the load-bearing beam frame 1 makes it convenient to repair and replace the pipeline when the line fails or needs to be expanded and upgraded without damaging the overall structure of the floor. At the same time, the design of the connector ensures the stable connection between the precast bottom plate 3 and the load-bearing beam frame 1, and facilitates the disassembly and reinstallation. The problems of difficult maintenance of the line failure caused by the pipeline layout in the existing precast floor and the damage to the floor structure caused by the local expansion and upgrading are effectively solved, and the practicability and reliability of the precast floor are improved.

[0044] The above are all preferred embodiments of the present application, and do not limit the protection scope of the present application, so that: all equivalent changes made according to the structure, shape, principle of the present application should be covered in the protection scope of the present application.

Claims

1. A full-precast steel beam ribbed composite floor slab, characterized by, The utility model provides a kind of prefabricated building 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 a connector, the connector includes a connecting seat (5) and a plug-in support rod (6), and a plurality of connecting seats (5) are connected to the lower flange (113) and the 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).

2. A full-precast steel beam ribbed composite floor slab according to claim 1, characterized in that: The transverse beam (12) is arranged perpendicular 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 located in the concrete floor (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 (2) is 3 / 5-4 / 5 of the total thickness of the concrete floor (2), and the thickness of the longitudinal beam (11) embedded in the concrete floor (2) is 3 / 5-4 / 5 of the total thickness of the concrete floor (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 (2) accounts for 2 / 3-3 / 4 of the total thickness, and the thickness of the longitudinal beam (11) located outside the concrete floor (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 plug-in supporting rod (6) comprises a rod body (61) and an operation supporting plate (62) fixed to one end of the rod body (61), and a plurality of elastic protrusions (63) are fixed to the outer side wall of the rod body (61) and taper away from the axis of the plug-in supporting rod (6); The connecting seat (5) comprises a connecting cylinder (51) penetrating and fixedly connected to the lower flange (113) or the bottom flange (123), and a plurality of clamping grooves for accommodating the elastic protrusions (63) are formed in the inner side wall of the connecting cylinder (51).

7. A full-precast steel beam ribbed composite floor slab according to claim 6, characterized in that: The connecting seat (5) further comprises a load lifting block (52) arranged on the side of the lower flange (113) or the bottom flange (123) away from the prefabricated bottom plate (3), and one end of the connecting cylinder (51) is connected to the load lifting block (52), and the clamping grooves are annular. A connecting groove (521) is formed in the load lifting block (52), and a matching clamping block (522) is fixed to the inner side wall of the connecting groove (521), and a matching groove body (64) is arranged at the end of the rod body (61) away from the operation supporting plate (62), and the matching groove body (64) is used for accommodating the matching clamping block (522). When the end of the rod body (61) rotates in the connecting groove (521), the matching clamping block (522) can enter or leave the matching groove body (64).

8. A full-precast steel beam ribbed composite floor slab according to claim 7, characterized in that: An installation groove (31) for accommodating the operation supporting plate (62) is formed in the prefabricated bottom plate (3), a positioning groove (621) is formed in the end face of the operation supporting plate (62), and a first directional groove (32) and a second directional groove (33) are arranged at intervals around each installation groove (31). 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 penetrate 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) enters the matching groove body (64).

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