Reinforced concrete cast-in-place large-bay tube core floor and construction process thereof

Abstract

The present application provides a kind of steel reinforced concrete cast-in-place large bay tube core floor and its construction technology, it is related to the field of construction, comprising: composite tube core;The top of the composite tube core is provided with annular reinforcing bar, the bottom of the composite tube core is inserted with support beam, the bottom of support beam is connected with bottom layer board by connecting bolt, the front and rear sides of support beam are provided with transverse reinforcing bar, the inside of support beam is inserted with longitudinal reinforcing bar at equal distance, annular reinforcing bar, transverse reinforcing bar and longitudinal reinforcing bar are installed with reinforcing hoop at intersection place.It is designed by the elliptical hollow structure of composite tube core and reinforcing support tube, while guaranteeing bearing capacity, the self-weight is reduced, the stress is more uniform by elliptical structure, reduces stress concentration, reinforcing support tube improves anti-deformation capacity, combined with reinforcing structure, all-around enhances floor mechanical property, disperses load, improves crack resistance and compressive strength, solve the problem of floor self-weight, low construction efficiency, insufficient crack resistance and durability.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of building construction, in particular to a reinforced concrete cast-in-place large-bay tube core floor and a construction process thereof. BACKGROUND

[0002] In the field of modern construction engineering, reinforced concrete cast-in-place large-bay buildings are increasingly favored by the market. With its unique spatial structure design, the large-bay building can provide more flexible and variable space layout for users. Whether it is used for free partitioning in commercial places or personalized creation in residential space, it can easily meet the diversified use requirements.

[0003] Based on the above, the existing reinforced concrete cast-in-place large-bay tube core floor and its construction process have the following shortcomings:

[0004] The existing large-bay floor has the problems of increased foundation load due to excessive self-weight, low construction efficiency and difficult precision control, poor crack resistance and insufficient durability. The traditional solid reinforced concrete floor not only increases the foundation treatment cost and construction difficulty, but also has a long cycle and is prone to deviation due to the complicated construction process and reliance on manual experience for component positioning. In addition, it is prone to cracks under temperature stress and load. SUMMARY

[0005] The present application relates to a reinforced concrete cast-in-place large-bay tube core floor and its construction process. By designing the elliptical hollow structure of the composite tube core and the reinforcing support tube, the self-weight is reduced while the bearing capacity is ensured. The elliptical structure makes the concrete stress more uniform, reduces stress concentration, and the "I" shaped support beam closely cooperates with the composite tube core, combined with the reinforcing structure composed of the annular reinforcing bar, the transverse reinforcing bar, the longitudinal reinforcing bar and the reinforcing hoop, to enhance the mechanical properties of the floor in all directions, disperse the load, improve the crack and compression resistance, and ensure the structural reliability and durability under large-bay span.

[0006] The present application provides a reinforced concrete cast-in-place large-bay tube core floor and its construction process, which specifically comprises: a composite tube core; an annular reinforcing bar is arranged around the top of the composite tube core, a support beam is inserted into the bottom of the composite tube core, a bottom plate is connected to the bottom of the support beam through connecting bolts, transverse reinforcing bars are arranged on the front and rear sides of the support beam, longitudinal reinforcing bars are inserted into the inside of the support beam at equal distances, and reinforcing hoops are installed at the intersections of the annular reinforcing bar, the transverse reinforcing bar and the longitudinal reinforcing bar.

[0007] Further, the composite tube core is a hollow structure with an elliptical cross-section, alignment slots are arranged at equal distances on the top arc-shaped outer wall of the composite tube core, a reinforcing support tube in the shape of a hollow cylinder is installed in the hollow interior of the composite tube core, and rectangular connecting slots are arranged at equal distances on the bottom of the composite tube core.

[0008] Furthermore, the composite core is made of a mixture of thin-walled plastic and fiber-reinforced composite material.

[0009] Furthermore, the cross-section of the supporting beam is in the shape of an "I". Alignment blocks are installed at equal intervals in the middle of the top end face of the supporting beam. The alignment blocks are inserted into the connection slots opened on the bottom end face of the composite tube core. The top of the alignment blocks is arc-shaped and fits against the inner wall of the top of the reinforcing support tube of the composite tube core. Circular through holes for reinforcing ribs are opened in the front and rear side walls of the supporting beam body between adjacent alignment blocks. Longitudinal reinforcing ribs are inserted and connected in the through holes for reinforcing ribs.

[0010] Furthermore, the main body of the annular reinforcing rib is "n" shaped, and the front and rear ends of the annular reinforcing rib are provided with upwardly curved connecting bends. The bottom of the main body of the annular reinforcing rib is engaged in the alignment groove on the outer side wall of the top of the composite tube core, and the connecting bends at the front and rear ends of the annular reinforcing rib wrap around the bottom of the transverse reinforcing ribs on the front and rear sides of the supporting beam.

[0011] Furthermore, the bottom of the left and right side walls of the reinforcing clamp are provided with transverse slots, which are engaged with the transverse reinforcing ribs. The right side of the front and rear side walls of the reinforcing clamp are provided with longitudinal slots, which are engaged with the longitudinal reinforcing ribs. The left side wall of the reinforcing clamp is provided with an annular slot, which is engaged with the connection bend at the front and rear ends of the annular reinforcing rib.

[0012] Furthermore, alignment rods are installed at equal intervals on the top end face of the bottom plate and the bottom of the supporting beam, and connecting bolts are installed in the end face of the bottom plate between the connecting alignment rods, with the top end of the connecting bolts threaded into the bottom end face of the supporting beam.

[0013] Furthermore, the annular reinforcing ribs, transverse reinforcing ribs, longitudinal reinforcing ribs, and reinforcing hoops together form a reinforcing structure, with the transverse and longitudinal reinforcing ribs interwoven perpendicularly to form a stable steel mesh structure.

[0014] Furthermore, a crack-resistant layer is adhered to the upper surface of the bottom plate, which is composed of a mixture of fiber concrete and polymer mortar.

[0015] This invention discloses a construction process for a cast-in-place reinforced concrete large-span pipe core floor slab, comprising the following steps:

[0016] 1) First, hoist the support beam to the designated position, and use a level and total station to accurately level and position it to ensure that the horizontality and verticality of the support beam meet the design requirements. Then, preliminarily position the bottom plate by aligning the alignment rod with the corresponding position of the bottom of the support beam.

[0017] 2) Secure the bottom plate to the support beam using connecting bolts. Tighten the bolts to ensure a firm connection and that the bottom plate and support beam 2 are tightly fitted together.

[0018] 3) Then, the longitudinal stiffeners are sequentially inserted into the stiffener holes on the front and rear side walls of the supporting beam, ensuring that the length of the longitudinal stiffeners meets the design requirements and that the length of both ends extending out of the supporting beam meets the anchoring requirements. The longitudinal stiffeners are then fixed by binding or welding to the supporting beam.

[0019] 4) Install transverse reinforcing bars on the front and rear sides of the supporting beam so that the transverse reinforcing bars and longitudinal reinforcing bars interweave perpendicularly to form a steel mesh structure. At the intersection, use binding or welding to firmly connect the transverse reinforcing bars and longitudinal reinforcing bars to ensure the integrity and stability of the steel mesh.

[0020] 5) Hoist the composite tube core to the installation position, align the connecting slot at the bottom of the composite tube core with the alignment block at the top of the support beam, slowly lower the composite tube core, insert the alignment block into the connecting slot, ensure that the composite tube core is tightly connected to the support beam and that the position of the composite tube core is accurate, check the direction and position of the alignment groove on the top arc-shaped outer wall of the composite tube core, and prepare for the subsequent installation of the annular reinforcing rib.

[0021] 6) Snap the bottom of the annular reinforcing rib body into the alignment groove on the outer side wall of the top of the composite tube core. At the same time, bend the connection of the front and rear ends of the annular reinforcing rib back around the bottom of the transverse reinforcing ribs on the front and rear sides of the support beam. Use welding to fix the annular reinforcing rib to the composite tube core and the transverse reinforcing ribs to ensure a firm connection.

[0022] 7) Install reinforcing clamps at the intersection of the annular reinforcing ribs, transverse reinforcing ribs and longitudinal reinforcing ribs. Connect the transverse groove of the reinforcing clamp to the transverse reinforcing rib, the longitudinal groove to the longitudinal reinforcing rib, and the annular groove to the connecting bend at the front and rear ends of the annular reinforcing rib. Adjust the position of the reinforcing clamps to make them fit tightly against each reinforcing rib to ensure the stability of the reinforced structure.

[0023] 8) After completing the installation of the above components, conduct a comprehensive inspection of the entire floor slab structure to ensure that the installation positions of each component are accurate and the connections are firm. Use a concrete pump truck to transport concrete to the pouring area and pour the concrete in layers and sections from one end to the other. During the pouring process, use a vibrator to compact the concrete to avoid quality problems such as honeycomb and pitting. When vibrating, be careful not to let the vibrator touch the composite core, reinforcing bars, or other components to prevent them from shifting or deforming. Control the pouring speed and height of the concrete to avoid the composite core floating or shifting due to pouring the concrete too quickly or too high. During the concrete pouring process, assign a dedicated person to monitor the floor slab structure.

[0024] The present application provides a reinforced concrete cast-in-place large-bay tube core floor and a construction process thereof, which has the following beneficial effects:

[0025] 1. The present application reduces the self-weight while ensuring the bearing performance through the design of the elliptical hollow structure of the composite tube core and the reinforcing support tube. The elliptical structure makes the concrete stress more uniform and reduces stress concentration. The reinforcing support tube improves the anti-deformation capacity. The "H" shaped support beam is closely matched with the composite tube core, and the reinforcing structure composed of the annular reinforcing rib, the transverse reinforcing rib, the longitudinal reinforcing rib, and the reinforcing hoop enhances the mechanical properties of the floor in all directions, disperses the load, improves the crack and compression resistance, and ensures the structural reliability and durability under large-bay span.

[0026] 2. The design of the alignment clamping groove and the connecting slot of the composite tube core, and the alignment clamping block of the support beam facilitates accurate positioning and rapid assembly of each component, improves construction efficiency, and the multi-slot design of the reinforcing hoop makes the reinforcing rib easy and fast to fix. At the same time, the components are connected tightly and stably, which can effectively prevent displacement and deformation during concrete pouring, ensuring construction quality. This connection method also facilitates disassembly and maintenance, reducing the cost of later maintenance.

[0027] 3. The composite tube core made of thin-walled plastic and fiber-reinforced composite material endows the floor with light weight, high strength, and corrosion resistance. Its good heat and sound insulation performance creates a comfortable environment for building. The crack-resistant layer composed of fiber concrete and polymer mortar on the bottom plate effectively suppresses crack generation, improves the durability of the floor, prolongs the service life of the building, reduces the maintenance cost in the later period, and ensures the long-term safety and stability of the building structure. BRIEF DESCRIPTION OF DRAWINGS

[0028] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings of the embodiments will be briefly introduced below.

[0029] The drawings described in the following description only relate to some embodiments of the present application, and are not a limitation of the present application.

[0030] In the drawings:

[0031] Figure 1 is the axial side structure schematic diagram of the reinforced concrete cast-in-place large-bay tube core floor of the embodiment of the present application.

[0032] Figure 2 is the side view structure schematic diagram of the reinforced concrete cast-in-place large-bay tube core floor of the embodiment of the present application.

[0033] Figure 3 is the bottom view structure schematic diagram of the reinforced concrete cast-in-place large-bay tube core floor of the embodiment of the present application.

[0034] Figure 4It is the integral split structure schematic diagram of the reinforced concrete cast-in-place large-bay tube core floor of the embodiment of the application.

[0035] Figure 5 It is the composite tube core, support crossbeam and annular reinforcing bar split structure schematic diagram of the reinforced concrete cast-in-place large-bay tube core floor of the embodiment of the application.

[0036] Figure 6 It is the annular reinforcing bar and transverse reinforcing bar connecting structure schematic diagram of the reinforced concrete cast-in-place large-bay tube core floor of the embodiment of the application.

[0037] Figure 7 It is the composite tube core and support crossbeam split structure schematic diagram of the reinforced concrete cast-in-place large-bay tube core floor of the embodiment of the application.

[0038] Figure 8 It is the reinforcing hoop structure schematic diagram of the reinforced concrete cast-in-place large-bay tube core floor of the embodiment of the application.

[0039] List of reference signs

[0040] 1, composite tube core; 101, alignment clamping groove; 102, reinforcing support tube; 103, connecting slot; 2, support crossbeam; 201, alignment clamping block; 202, reinforcing bar perforation; 3, annular reinforcing bar; 301, connecting backbend; 4, transverse reinforcing bar; 5, longitudinal reinforcing bar; 6, reinforcing hoop; 601, transverse clamping groove; 602, longitudinal clamping groove; 603, annular clamping groove; 7, bottom layer plate; 701, alignment rod; 8, connecting bolt. DETAILED DESCRIPTION

[0041] In order to make the purpose, scheme and advantages of the technical scheme of the application more clear, the technical scheme of the embodiment of the application will be described clearly and completely in the following with reference to the drawings of the specific embodiment of the application. Unless otherwise specified, the terms used herein have the usual meanings in the art. The same reference signs in the drawings represent the same parts.

[0042] Embodiment one: please refer to Figures 1 to 8 As shown in the figure:

[0043] The application provides a reinforced concrete cast-in-place large-bay tube core floor and a construction process thereof, which comprises a composite tube core 1, an annular reinforcing bar 3 is arranged around the top of the composite tube core 1, a support crossbeam 2 is inserted into the bottom of the composite tube core 1, a bottom layer plate 7 is connected to the bottom of the support crossbeam 2 through a connecting bolt 8, transverse reinforcing bars 4 are arranged on the front and back sides of the support crossbeam 2, longitudinal reinforcing bars 5 are inserted into the inside of the support crossbeam 2 at equal distances, and reinforcing hoops 6 are installed at the intersection of the annular reinforcing bar 3, the transverse reinforcing bar 4 and the longitudinal reinforcing bar 5.

[0044] The composite tube core 1 is a hollow structure with an elliptical cross-section, and the top arc-shaped outer wall of the composite tube core 1 is provided with equidistant alignment clamping grooves 101, the hollow interior of the composite tube core 1 is provided with a hollow cylindrical reinforcing support pipe 102, and the bottom of the composite tube core 1 is provided with equidistant rectangular connecting insertion grooves 103, so that the elliptical hollow structure effectively reduces the self-weight of the floor slab while not reducing the overall bearing capacity, the alignment clamping grooves 101 facilitate accurate positioning and installation of the annular reinforcing rib 3, improve construction efficiency, the reinforcing support pipe 102 enhances the internal structural strength of the composite tube core 1 and prevents compression deformation, and the connecting insertion grooves 103 facilitate quick assembly with the support cross beam 2, thereby ensuring the tightness and stability of the connection of each component.

[0045] The composite tube core 1 is made of a mixture of thin-walled plastic and fiber-reinforced composite material, so that the combination of thin-walled plastic and fiber-reinforced composite material gives the composite tube core 1 the characteristics of light weight, high strength, and corrosion resistance, reduces material costs, prolongs the service life of the floor slab, and the good plasticity of the material facilitates tube core forming, adapts to different construction scene requirements, and also reduces material loss during construction.

[0046] The above technical scheme, through the design of the unique elliptical hollow structure of the composite tube core 1 and the reinforcing support pipe 102, significantly reduces the self-weight of the floor slab while effectively enhancing the compression resistance and structural stability of the composite tube core 1, the elliptical cross-section makes the stress more uniform during concrete pouring, reducing stress concentration, and the reinforcing support pipe 102 in the hollow interior further enhances the deformation resistance of the composite tube core 1, ensuring that it is not easily damaged when bearing the upper load, and at the same time, the mixed material of thin-walled plastic and fiber-reinforced composite material not only has light weight, but also has good heat insulation and sound insulation performance, which can effectively improve the heat insulation and sound insulation and noise reduction effect of the floor slab, creating a more comfortable environment for the building interior.

[0047] The support cross beam 2 has a "H" shaped cross-section, the middle of the top end face of the support cross beam 2 is provided with equidistant alignment clamping blocks 201, the alignment clamping blocks 201 are inserted into the connecting insertion grooves 103 provided at the bottom end face of the composite tube core 1, the top end of the alignment clamping block 201 is arc-shaped and fits on the top inner wall of the reinforcing support pipe 102 of the composite tube core 1, and the main body front and rear side walls of the support cross beam 2 between adjacent alignment clamping blocks 201 are provided with circular reinforcing rib through holes 202, and the longitudinal reinforcing rib 5 is inserted into the reinforcing rib through holes 202, so that the "H" shaped structure makes the support cross beam 2 have good bending and shearing resistance, effectively disperses the floor load, the alignment clamping blocks 201 cooperate with the connecting insertion grooves 103 and the reinforcing support pipe 102 to enhance the stability of the connection between the support cross beam 2 and the composite tube core 1, and the reinforcing rib through holes 202 facilitate the insertion and installation of the longitudinal reinforcing rib 5, so that the longitudinal reinforcing rib 5 is closely combined with the support cross beam 2, further improving the overall structural strength.

[0048] The main body of the annular reinforcing rib 3 is in the shape of "n", the front and rear ends of the annular reinforcing rib 3 are provided with connecting back bends 301 bent upward, the main body bottom of the annular reinforcing rib 3 is clamped in the corresponding clamping groove 101 of the outer side wall of the top of the composite tube core 1, and the connecting back bends 301 of the front and rear ends of the annular reinforcing rib 3 are wrapped around the bottom of the transverse reinforcing rib 4 on the front and rear sides of the support cross beam 2, so that the annular reinforcing rib 3 in the shape of "n" can effectively constrain the top of the composite tube core 1 to prevent lateral deformation of the composite tube core 1 under stress, and the cooperation of the connecting back bends 301 and the transverse reinforcing rib 4 can firmly connect the composite tube core 1, the support cross beam 2 and the transverse reinforcing rib 4 to form a cooperative stress system, thereby improving the overall stability and bearing capacity of the floor.

[0049] The annular reinforcing rib 3, the transverse reinforcing rib 4, the longitudinal reinforcing rib 5 and the reinforcing hoop 6 together form a reinforcing structure, the transverse reinforcing rib 4 and the longitudinal reinforcing rib 5 are perpendicular to each other and interwoven to form a stable reinforcing mesh structure, so that the reinforcing structure can improve the mechanical properties of the floor in all directions, the reinforcing mesh structure can effectively disperse the load on the floor, enhance the crack resistance and compressive strength of the floor, the reinforcing hoop 6 can tightly fix the reinforcing ribs to prevent displacement of the reinforcing ribs during pouring of concrete, ensure the effectiveness of the reinforcing structure and ensure the safety of the floor during long-term use.

[0050] The bottom of the left and right side walls of the reinforcing hoop 6 is provided with a transverse clamping groove 601 clamped on the transverse reinforcing rib 4, the right side of the front and rear side walls of the reinforcing hoop 6 is provided with a longitudinal clamping groove 602 clamped on the longitudinal reinforcing rib 5, and the left side wall of the reinforcing hoop 6 is provided with an annular clamping groove 603 clamped at the connecting back bends 301 of the front and rear ends of the annular reinforcing rib 3, so that the multi-clamping groove design can realize precise and tight connection of the reinforcing hoop 6 and the reinforcing ribs, and the operation is simple and fast, so that the reinforcing ribs can be quickly fixed, the reinforcing hoop 6 can effectively enhance the integrity of the reinforcing mesh and improve the structural reliability of the floor under complex stress conditions.

[0051] By adopting the above technical solution, the connection strength and stability between the supporting beam 2 and the composite tube core 1 are enhanced through the "I"-shaped cross-section design of the supporting beam 2 and the cooperation between the alignment block 201 and the connecting slot 103. The "I"-shaped structure gives the supporting beam 2 itself high bending strength, which can better distribute and transfer the load. The alignment block 201 is inserted into the connecting slot 103 and fits against the inner wall of the reinforced supporting tube 102, ensuring the effective transfer of force between the supporting beam 2 and the composite tube core 1, so that the two work together. The reinforcing bars, bearing the load of the floor slab, are connected by a perforation 202 to facilitate the insertion of longitudinal reinforcing bars 5, further enhancing the connection between the supporting beam 2 and the entire reinforcing structure, and improving the overall load-bearing capacity of the floor slab. Through the interlocking of the annular reinforcing bar 3 with the "n"-shaped body and the alignment slot 101, and the circumferential engagement of the connecting bend 301 and the transverse reinforcing bar 4, the connection between the top of the composite core 1 and the steel mesh is effectively strengthened. The annular reinforcing bar 3, inserted into the alignment slot 101, restricts the horizontal displacement of the composite core 1. Simultaneously, the connecting loop 301 surrounds the transverse reinforcing rib 4, tightly integrating the composite core 1 with the steel mesh into a whole. This enhances the synergy between the components of the floor slab under stress. During concrete pouring, this connection method also prevents the composite core 1 from floating or shifting, ensuring the accuracy and stability of the floor slab structure. The reinforcing structure composed of the annular reinforcing rib 3, transverse reinforcing rib 4, longitudinal reinforcing rib 5, and reinforcing clamp 6 significantly improves the overall strength and deformation resistance of the floor slab. The steel mesh formed by the transverse reinforcing rib 4 and longitudinal reinforcing rib 5 provides the floor slab with good horizontal bearing capacity, effectively resisting the bending stress caused by the load. The reinforcing clamp 6, through its transverse slot 601, longitudinal slot 602, and annular slot 603, respectively engages with the transverse reinforcing rib 4, longitudinal reinforcing rib 5, and annular reinforcing rib 3, firmly connecting the reinforcing ribs together and preventing relative displacement of the reinforcing ribs under stress. This makes the reinforcing structure form a stable whole, thereby greatly enhancing the structural reliability and durability of the floor slab under large spans.

[0052] Alignment rods 701 are installed at equal intervals on the top end face of the bottom plate 7 and the bottom of the supporting beam 2. Connecting bolts 8 are installed in the end face of the bottom plate 7 between the connecting alignment rods 701. The top of the connecting bolts 8 is threaded into the bottom end face of the supporting beam 2. Therefore, the alignment rods 701 facilitate the quick positioning and installation of the bottom plate 7 and the supporting beam 2, ensuring installation accuracy. The connection method of the connecting bolts 8 makes the bottom plate 7 and the supporting beam 2 firmly connected, enhancing the stability of the bottom structure of the floor slab, facilitating subsequent construction operations, and also facilitating disassembly and maintenance, reducing later maintenance costs.

[0053] The upper surface of the bottom floor plate 7 is attached to an anti-cracking layer composed of a mixture of fiber concrete and polymer mortar, so that the anti-cracking layer composed of the mixture of fiber concrete and polymer mortar on the bottom floor plate 7 effectively prevents the generation of floor surface cracks, the fiber in the fiber concrete can disperse the stress inside the concrete and inhibit the expansion of micro-cracks, and the good flexibility and adhesion of the polymer mortar can fill the fine defects on the concrete surface and enhance the anti-cracking performance of the concrete surface, the existence of the anti-cracking layer improves the durability of the floor and prolongs the service life of the floor, reduces the later maintenance cost, and ensures the long-term safety and stability of the building structure.

[0054] By arranging the alignment rod 701 and the connecting bolt 8 on the bottom floor plate 7, the bottom floor plate 7 and the support beam 2 are stably connected, the bottom floor plate 7 can reliably support the entire floor structure, the alignment rod 701 plays a positioning role, the bottom floor plate 7 and the support beam 2 are accurately installed, the connecting bolt 8 provides strong fastening force, and the two are tightly combined to jointly bear the load of the floor. This connection mode is simple and reliable, convenient for construction operation, and improves the efficiency and quality of floor installation.

[0055] The application discloses a construction process of a reinforced concrete cast-in-place large-bay tube core floor, and comprises the following steps:

[0056] 1. First, the support beam 2 is hoisted to the designated position, accurate leveling and positioning are performed by using a level and a total station, the horizontal degree and the vertical degree of the support beam 2 are ensured to meet the design requirements, and then the bottom floor plate 7 is preliminarily positioned at the corresponding position on the bottom of the support beam 2 through the alignment rod 701;

[0057] 2. The bottom floor plate 7 and the support beam 2 are fastened and connected by using the connecting bolt 8, the connecting bolt 8 is tightened, the connection is ensured to be firm, and the bottom floor plate 7 is tightly attached to the support beam 2;

[0058] 3. Then, the longitudinal reinforcing bars 5 are sequentially inserted into the reinforcing bar perforations 202 on the front and rear sidewalls of the support beam 2, the length of the longitudinal reinforcing bars 5 is ensured to meet the design requirements, the lengths of the two ends of the longitudinal reinforcing bars 5 extending out of the support beam 2 meet the anchoring requirements, the longitudinal reinforcing bars 5 are fixed, and the longitudinal reinforcing bars 5 can be connected to the support beam 2 in a binding or welding mode;

[0059] 4. Then, the transverse reinforcing bars 4 are installed on the front and rear sides of the support beam 2, the transverse reinforcing bars 4 and the longitudinal reinforcing bars 5 are perpendicular to each other and interwoven, a steel bar mesh structure is formed, the transverse reinforcing bars 4 and the longitudinal reinforcing bars 5 are firmly connected at the intersection points in a binding or welding mode, and the integrity and stability of the steel bar mesh are ensured;

[0060] 5). Hoist the composite tube core 1 to the installation position, align the connecting slot 103 at the bottom of the composite tube core 1 with the alignment block 201 at the top of the support beam 2, slowly lower the composite tube core 1, insert the alignment block 201 into the connecting slot 103, ensure that the composite tube core 1 is tightly connected with the support beam 2, and the position of the composite tube core 1 is accurate, check the direction and position of the alignment clamping groove 101 on the top arc-shaped outer wall of the composite tube core 1, and prepare for the subsequent installation of the annular reinforcing rib 3;

[0061] 6). The annular reinforcing rib 3 main body bottom is clamped in the alignment clamping groove 101 on the top outer side wall of the composite tube core 1, and the connecting back bend 301 at the front and rear ends of the annular reinforcing rib 3 is wrapped around the bottom of the transverse reinforcing rib 4 on the front and rear sides of the support beam 2, and the annular reinforcing rib 3 is fixedly connected with the composite tube core 1 and the transverse reinforcing rib 4 by welding, ensuring firm connection;

[0062] 7). Install the reinforcing hoop 6 at the intersection of the annular reinforcing rib 3, the transverse reinforcing rib 4 and the longitudinal reinforcing rib 5, clamp the transverse clamping groove 601 of the reinforcing hoop 6 on the transverse reinforcing rib 4, clamp the longitudinal clamping groove 602 on the longitudinal reinforcing rib 5, and clamp the annular clamping groove 603 on the connecting back bend 301 at the front and rear ends of the annular reinforcing rib 3, adjust the position of the reinforcing hoop 6 to tightly fit each reinforcing rib, and ensure the stability of the reinforcing structure;

[0063] 8). After completing the installation of the above components, the entire floor structure is comprehensively checked to ensure that each component is installed in the correct position and is firmly connected, concrete is delivered to the pouring site using a concrete pump truck, and concrete is poured in a layered and segmented manner from one end to the other end, in the pouring process, the concrete is vibrated and compacted using a vibrating rod to avoid quality problems such as honeycomb and pitted surface, when vibrating, pay attention to not touch the composite tube core 1, reinforcing rib and other components to prevent displacement or deformation, control the pouring speed and height of the concrete to avoid floating or displacement of the composite tube core 1 caused by too fast or too high pouring of the concrete, and arrange special personnel to monitor the floor structure during the concrete pouring process.

[0064] The specific use and role of the embodiment are as follows: in the application, first, the support beam 2 is hoisted to the designated position, and the leveling and positioning are accurately performed by using the level and the total station, so that the horizontal degree and the vertical degree of the support beam 2 meet the design requirements; then, the bottom plate 7 is preliminarily positioned by aligning the rod 701 with the corresponding position at the bottom of the support beam 2, and then the bottom plate 7 is fastened and connected with the support beam 2 by using the connecting bolt 8, the connecting bolt 8 is tightened to ensure the fastening, the bottom plate 7 is tightly attached to the support beam 2, then the longitudinal reinforcing bars 5 are sequentially inserted into the reinforcing bar perforations 202 on the front and rear sidewalls of the support beam 2, so that the length of the longitudinal reinforcing bars 5 meets the design requirements, and the length of the two ends extending out of the support beam 2 meets the anchoring requirements, the longitudinal reinforcing bars 5 are fixed, and the longitudinal reinforcing bars 5 can be connected with the support beam 2 by welding, then the transverse reinforcing bars 4 are installed on the front and rear sides of the support beam 2, so that the transverse reinforcing bars 4 and the longitudinal reinforcing bars 5 are perpendicular to each other and interwoven to form a reinforcing mesh structure, the transverse reinforcing bars 4 and the longitudinal reinforcing bars 5 are fastened at the intersection points by welding to ensure the integrity and stability of the reinforcing mesh, the composite pipe core 1 is hoisted to the installation position, the connecting slot 103 at the bottom of the composite pipe core 1 is aligned with the alignment clamping block 201 at the top of the support beam 2, the composite pipe core 1 is slowly lowered, the alignment clamping block 201 is inserted into the connecting slot 103 to ensure that the composite pipe core 1 is tightly connected with the support beam 2 and the position of the composite pipe core 1 is accurate, the direction and position of the alignment clamping groove 101 on the arc-shaped outer wall at the top of the composite pipe core 1 are checked to prepare for the installation of the annular reinforcing bar 3, the main body of the annular reinforcing bar 3 is clamped at the alignment clamping groove 101 on the outer sidewall at the top of the composite pipe core 1, and the connecting back bends 301 at the front and rear ends of the annular reinforcing bar 3 are wrapped around the transverse reinforcing bars 4 at the bottom of the support beam 2, the annular reinforcing bar 3 is fixedly connected with the composite pipe core 1 and the transverse reinforcing bars 4 by using binding wires or welding to ensure the fastening, the reinforcing hoops 6 are installed at the intersections of the annular reinforcing bar 3, the transverse reinforcing bar 4 and the longitudinal reinforcing bar 5, the transverse clamping grooves 601 of the reinforcing hoops 6 are clamped on the transverse reinforcing bars 4, the longitudinal clamping grooves 602 are clamped on the longitudinal reinforcing bars 5, and the annular clamping grooves 603 are clamped at the connecting back bends 301 at the front and rear ends of the annular reinforcing bar 3, the positions of the reinforcing hoops 6 are adjusted to tightly attach to the reinforcing bars, then the reinforcing hoops 6 are fixedly connected by using bolts or other fastening methods to ensure the stability of the reinforcing structure, after the above components are installed, the entire floor structure is comprehensively checked to ensure that the installation positions of the components are accurate and the connections are firm, the concrete is conveyed to the pouring position by using a concrete pump truck, the concrete is poured in a way of layering and segmenting from one end to the other end, in the pouring process, the concrete is vibrated and compacted by using a vibrating rod to avoid quality problems such as honeycomb and pitted surface, when vibrating, the vibrating rod should not press the composite pipe core 1 and the reinforcing bars to prevent displacement or deformation, the pouring speed and height of the concrete are controlled,Avoid the concrete pouring too fast or too high lead to the composite pipe core 1 floating or displacement, in the concrete pouring process, arrange the special person to the floor structure monitoring.

[0065] The above merely illustrates the exemplary embodiments of the present application, but is not intended to limit the protection scope of the present application, and the protection scope of the present application is determined by the appended claims.

Claims

1. A cast-in-place reinforced concrete large-span pipe-core floor slab, characterized in that, The composite tube core (1) is surrounded by annular reinforcing ribs (3) at the top and a supporting beam (2) is inserted at the bottom. The bottom of the supporting beam (2) is connected to a bottom plate (7) by connecting bolts (8). Transverse reinforcing ribs (4) are provided on the front and rear sides of the supporting beam (2). Longitudinal reinforcing ribs (5) are interspersed at equal intervals inside the supporting beam (2). A reinforcing clamp (6) is installed at the intersection of the annular reinforcing ribs (3), transverse reinforcing ribs (4) and longitudinal reinforcing ribs (5). The composite tube core (1) is a hollow structure with an elliptical cross-section. The composite core (1) has equidistant alignment slots (101) on its top arc-shaped outer wall. A hollow cylindrical reinforcing support tube (102) is installed inside the composite core (1). Rectangular connection slots (103) are equidistantly opened at the bottom of the composite core (1). The cross-section of the support beam (2) is "I" shaped. Alignment blocks (201) are equidistantly installed at the middle of the top end face of the support beam (2). The alignment blocks (201) are inserted into the connection slots (103) opened at the bottom end face of the composite core (1), and the top of the alignment blocks (201) is arc-shaped. On the inner top of the reinforcing support tube (102) of the composite core (1), a circular through-hole (202) is provided in the front and rear side walls of the supporting beam (2) between adjacent alignment blocks (201). A longitudinal reinforcing rib (5) is inserted and connected in the through-hole (202). The main body of the annular reinforcing rib (3) is "n" shaped. The front and rear ends of the annular reinforcing rib (3) are provided with upwardly curved connecting bends (301). The bottom of the main body of the annular reinforcing rib (3) is engaged in the alignment slot (101) on the outer side wall of the top of the composite core (1). The front and rear ends of the annular reinforcing rib (3) are connected by an upwardly curved connecting bend (301). The connecting bend (301) at the end surrounds the bottom of the transverse reinforcing ribs (4) on both sides of the supporting beam (2). The bottom of the left and right side walls of the reinforcing clamp (6) is provided with transverse slots (601), which are engaged with the transverse reinforcing ribs (4). The right side of the front and rear side walls of the reinforcing clamp (6) is provided with longitudinal slots (602), which are engaged with the longitudinal reinforcing ribs (5). The left side wall of the reinforcing clamp (6) is provided with an annular slot (603), which is engaged with the connecting bend (301) at both ends of the annular reinforcing ribs (3).

2. The reinforced concrete cast-in-place large-span pipe-core floor slab as described in claim 1, characterized in that, The composite core (1) is made of a mixture of thin-walled plastic and fiber-reinforced composite material.

3. The reinforced concrete cast-in-place large-span pipe-core floor slab as described in claim 1, characterized in that, Alignment rods (701) are installed at equal distances at the top end face of the bottom plate (7) and the bottom of the supporting beam (2). Connecting bolts (8) are installed in the end face of the bottom plate (7) between the connecting alignment rods (701). The top end of the connecting bolts (8) is threaded into the bottom end face of the supporting beam (2).

4. The reinforced concrete cast-in-place large-span pipe-core floor slab as described in claim 1, characterized in that, The ring-shaped reinforcing bar (3), the transverse reinforcing bar (4), the longitudinal reinforcing bar (5) and the reinforcing hoop (6) together form a reinforcing structure. The transverse reinforcing bar (4) and the longitudinal reinforcing bar (5) interweave perpendicularly to form a stable steel mesh structure.

5. The reinforced concrete cast-in-place large-span pipe-core floor slab as described in claim 1, characterized in that, The upper surface of the bottom plate (7) is covered with a crack-resistant layer, which is composed of a mixture of fiber concrete and polymer mortar.

6. The construction process of a cast-in-place reinforced concrete large-span pipe-core floor slab as described in claims 1 and 3, characterized in that, Includes the following steps: 1) First, hoist the support beam (2) to the designated position, and use a level and total station to accurately level and position it to ensure that the horizontality and verticality of the support beam (2) meet the design requirements. Then, the bottom plate (7) is initially positioned by aligning the rod (701) with the bottom of the support beam (2). 2) Use connecting bolts (8) to fasten the bottom plate (7) to the support beam (2), tighten the connecting bolts (8) to ensure a firm connection and that the bottom plate (7) and the support beam (2) fit tightly together; 3). Then, the longitudinal reinforcing ribs (5) are inserted sequentially into the reinforcing rib through holes (202) on the front and rear side walls of the main body of the supporting beam (2) to ensure that the length of the longitudinal reinforcing ribs (5) meets the design requirements and that the length of the two ends extending out of the supporting beam (2) meets the anchoring requirements. The longitudinal reinforcing ribs (5) are fixed by binding or welding to the supporting beam (2). 4). Then install transverse reinforcing bars (4) on the front and rear sides of the supporting beam (2) so that the transverse reinforcing bars (4) and the longitudinal reinforcing bars (5) interweave perpendicularly to form a steel mesh structure. At the intersection, the transverse reinforcing bars (4) and the longitudinal reinforcing bars (5) are firmly connected by binding or welding to ensure the integrity and stability of the steel mesh. 5) Hoist the composite core (1) to the installation position, align the connecting slot (103) at the bottom of the composite core (1) with the alignment block 201 at the top of the support beam (2), slowly lower the composite core (1), insert the alignment block (201) into the connecting slot (103), ensure that the composite core (1) is tightly connected to the support beam (2), and that the position of the composite core (1) is accurate, check the direction and position of the alignment groove (101) on the top arc-shaped outer wall of the composite core (1) to prepare for the subsequent installation of the annular reinforcing rib (3); 6) The bottom of the main body of the annular reinforcing rib (3) is snapped into the alignment slot (101) on the outer side of the top of the composite tube core (1). At the same time, the connecting bends 301 at the front and rear ends of the annular reinforcing rib (3) are wrapped around the bottom of the transverse reinforcing ribs (4) on the front and rear sides of the supporting beam (2). The annular reinforcing rib (3) is fixedly connected to the composite tube core (1) and the transverse reinforcing ribs (4) by welding to ensure a firm connection. 7) Install a reinforcing clamp (6) at the intersection of the annular reinforcing rib (3), the transverse reinforcing rib (4) and the longitudinal reinforcing rib (5). Connect the transverse groove (601) of the reinforcing clamp (6) to the transverse reinforcing rib (4), the longitudinal groove (602) to the longitudinal reinforcing rib (5), and the annular groove (603) to the connection bend (301) at the front and rear ends of the annular reinforcing rib (3). Adjust the position of the reinforcing clamp (6) so that it fits tightly against each reinforcing rib to ensure the stability of the reinforced structure. 8) After the above components are installed, a comprehensive inspection of the entire floor structure is carried out to ensure that the installation position of each component is accurate and the connection is firm. Concrete is transported to the pouring position using a concrete pump truck. Concrete is poured in layers and sections from one end to the other. During the pouring process, a vibrator is used to compact the concrete to avoid honeycomb and pitted surface quality problems. When vibrating, care should be taken not to press the composite core (1) or the reinforcing ribs to prevent them from shifting or deforming. The pouring speed and height of the concrete are controlled to avoid the composite core (1) from floating or shifting due to too fast or too high pouring. During the concrete pouring process, a special person is arranged to monitor the floor structure.

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