Prefabricated reinforced concrete beam and slab structure for transmitting bidirectional earthquake shearing force

Abstract

The utility model discloses a prefabricated reinforced concrete beam-slab structure for transmitting bidirectional earthquake shearing force, which comprises a concrete slab, the concrete slab comprises a pouring frame, two groups of panels and a reinforcing steel bar reinforcing layer, and a connecting beam is fixed on the outer wall of the panel positioned on the front side; the concrete beams and the connecting beams are correspondingly arranged; each splicing module comprises an inserting-connecting assembly, fixing assemblies and a locking assembly, inserting-connecting grooves are formed in the connecting beams, the inserting-connecting assemblies are inserted into the inserting-connecting grooves, the number of the fixing assemblies is two, the concrete beams are arranged between the two fixing assemblies, the connecting beams and the concrete beams are both connected with the fixing assemblies, the fixing assemblies are fixedly connected with the face plates, and the locking assemblies are fixedly connected with the face plates. The locking assembly penetrates through the two fixing assemblies and the concrete beam. The utility model can effectively resist various external forces, including earthquake force, wind load and the like, and ensures the safety and reliability of the structure in the use process.

Description

Technical Field

[0001] This utility model relates to the field of building engineering technology, and in particular to a precast reinforced concrete beam-slab structure for transmitting bidirectional seismic shear force. Background Technology

[0002] Prefabricated buildings are the future direction of industrialized construction. However, prefabricated monolithic buildings have a large number of post-cast composite layers, which leads to more wet construction work and heavy self-weight of the composite floors, resulting in greater seismic forces on the structure. On the other hand, fully prefabricated floor slabs have poor overall connection performance between floor slabs, and the in-plane stiffness of the floor slab structure under horizontal seismic action cannot meet the assumption of rigid floor slabs, thus reducing the seismic performance of fully prefabricated floor slabs.

[0003] Based on the above-mentioned technical problems, this utility model provides a precast reinforced concrete beam-slab structure for transmitting bidirectional seismic shear force. Utility Model Content

[0004] The purpose of this invention is to provide a precast reinforced concrete beam-slab structure that transmits bidirectional seismic shear force, in order to solve the problems existing in the prior art.

[0005] To achieve the above objectives, this utility model provides the following solution: This utility model provides a precast reinforced concrete beam-slab structure for transmitting bidirectional seismic shear force, comprising:

[0006] A concrete slab, comprising a casting frame, a panel, and a steel reinforcement layer, wherein two sets of panels are provided, the two sets of panels being symmetrically and detachably connected to the front and rear sides of the casting frame, the casting frame and the two panels enclosing each other to form a casting cavity, the steel reinforcement layer being disposed within the casting cavity, and a connecting beam being fixed on the outer wall of the front panel.

[0007] A concrete beam, wherein the concrete beam is arranged correspondingly to the connecting beam;

[0008] The splicing module includes a plug-in component, a fixing component, and a locking component. The connecting beam has a plug-in slot, and the plug-in component is plugged into the plug-in slot. There are two sets of fixing components, and the concrete beam is placed between the two sets of fixing components. Both the connecting beam and the concrete beam are connected to the fixing components. The fixing components are fixedly connected to the panel, and the locking component passes through the two sets of fixing components and the concrete beam.

[0009] According to the precast reinforced concrete beam-slab structure for transmitting bidirectional seismic shear force provided by this utility model, the reinforcement layer includes a steel mesh, which is provided in two layers. The two layers of steel mesh are symmetrically arranged between the two panels. A precast concrete insert plate is provided between the two sets of steel mesh. The precast concrete insert plate is inserted between the two sets of steel mesh. A butt reinforcing bar is fixed at the center of the precast concrete insert plate. One end of the butt reinforcing bar extends out of the precast concrete insert plate. The space between the precast concrete insert plate and the panel is filled with concrete. An insertion hole is provided on the precast concrete insert plate. The butt reinforcing bars on adjacent precast concrete insert plates are staggered and inserted into the insertion hole.

[0010] According to the precast reinforced concrete beam-slab structure for transmitting bidirectional seismic shear force provided by this utility model, the fixing component includes a first fixing plate, a second fixing plate, and a rib plate. The first fixing plate and the second fixing plate are arranged in an L-shape. The first fixing plate is fixed on the panel. The connecting beam and the concrete beam are both fixed to the second fixing plate. The rib plate is fixed between the first fixing plate and the second fixing plate and is arranged perpendicular to the first fixing plate and the second fixing plate.

[0011] According to the precast reinforced concrete beam-slab structure for transmitting bidirectional seismic shear force provided by this utility model, the locking assembly is provided in several sets, the locking assembly includes a through bolt, one end of the through bolt passes through the second fixing plate of the two sets of fixing assemblies and the concrete beam and is threadedly connected to a fixing nut, and the through bolt passes through the plug-in assembly.

[0012] According to the precast reinforced concrete beam-slab structure for transmitting bidirectional seismic shear force provided by this utility model, the plug-in assembly includes a plug plate, the plug plate has a cross-shaped structure, the plug plate is fixed inside the concrete beam, and one end of the plug plate extends out. The bottom surface of the connecting beam is provided with a slot, and the plug plate is inserted into the slot.

[0013] According to the precast reinforced concrete beam-slab structure for transmitting bidirectional seismic shear force provided by this utility model, a plurality of transverse through holes are provided on the concrete beam, the transverse through holes pass through the insert plate, and the through bolts pass through the transverse through holes.

[0014] According to the precast reinforced concrete beam-slab structure for transmitting bidirectional seismic shear force provided by this utility model, the first fixing plate is fixed to the panel by long bolts.

[0015] The present invention discloses the following technical effects:

[0016] 1) This utility model uses a unique modular design to tightly connect concrete slabs and concrete beams. During an earthquake, bidirectional seismic shear forces can be effectively transferred between the concrete slabs and beams through the connecting beams, fixing components, and locking components. The fixing and locking components enhance the overall integrity and collaborative working ability of the structure, enabling all components to jointly withstand seismic shear forces, avoiding structural damage caused by excessive local stress, and improving the safety of the structure under seismic loads.

[0017] 2) This utility model uses precast reinforced concrete components, which are produced in a standardized manner in a factory, ensuring the quality and precision of the components. Compared with on-site casting construction, precast construction can significantly shorten the construction cycle, reduce on-site wet work, and reduce the environmental impact of construction. At the same time, the precast components are produced in the factory, which facilitates quality control and inspection, and can improve the overall quality level of the structure.

[0018] 3) The panels and the cast-in-place frame are connected in a detachable manner. This design makes it easier to maintain, modify, or replace parts of the structure. For example, when a panel is damaged, it can be easily removed and replaced with a new one without large-scale destructive demolition of the entire structure, reducing maintenance costs and difficulty, and improving the service life and maintainability of the structure. Attached Figure Description

[0019] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0020] Figure 1 This is a structural schematic diagram of the precast reinforced concrete beam-slab structure for transmitting bidirectional seismic shear force according to this utility model.

[0021] Figure 2 This is a schematic diagram showing the fit between the fixing component of this utility model and the concrete beam;

[0022] Figure 3 This is an exploded view of the concrete slab of this utility model.

[0023] Among them, 1. Cast-in-place frame; 2. Panel; 3. Connecting beam; 4. Concrete beam; 5. Insertion groove; 6. Reinforcing steel mesh; 7. Precast concrete insert plate; 8. Butt reinforcing steel; 9. First fixing plate; 10. Second fixing plate; 11. Rib plate; 12. Through bolt; 13. Insert plate; 14. Long bolt. Detailed Implementation

[0024] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0025] To make the above-mentioned objectives, features and advantages of this utility model more apparent and understandable, the utility model will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0026] Reference Figure 1-3 This utility model provides a precast reinforced concrete beam-slab structure for transmitting bidirectional seismic shear force, comprising:

[0027] The concrete slab includes a casting frame 1, a panel 2, and a steel reinforcement layer. The panel 2 is provided in two sets, which are symmetrically and detachably connected to the front and rear sides of the casting frame 1. The casting frame 1 and the two panels 2 enclose each other to form a casting cavity. The steel reinforcement layer is set inside the casting cavity. A connecting beam 3 is fixed on the outer wall of the front panel 2.

[0028] Concrete beam 4 is arranged correspondingly to connecting beam 3;

[0029] The splicing module includes a plug-in component, a fixing component, and a locking component. The connecting beam 3 has a plug-in slot 5, and the plug-in component is plugged into the plug-in slot 5. There are two sets of fixing components, and the concrete beam 4 is placed between the two sets of fixing components. Both the connecting beam 3 and the concrete beam 4 are connected to the fixing components. The fixing components are fixedly connected to the panel 2. The locking component passes through the two sets of fixing components and the concrete beam 4.

[0030] The workflow of this utility model is as follows:

[0031] First, prepare the materials needed for pouring the frame 1, the two sets of panels 2, and the steel reinforcement layer.

[0032] The steel reinforcement layer is placed in a designated position inside the cast-in-place frame 1 to form a basic combined structure of the cast-in-place frame 1 and the steel reinforcement layer.

[0033] Two sets of panels 2 are symmetrically installed on the front and rear sides of the casting frame 1. A detachable connection is achieved through a suitable connection method, so that the casting frame 1 and the two panels 2 enclose each other to form a casting cavity, thus completing the initial assembly of the concrete slab.

[0034] On the outer wall of the front panel 2, the connecting beam 3 is installed by welding or other fixing methods to ensure that the connecting beam 3 is accurately positioned and firmly fixed.

[0035] Prepare concrete beam 4, and determine its size and specifications according to the design requirements.

[0036] Prepare the necessary components for the splicing module, including the plug-in components, two sets of fixing components, and locking components.

[0037] Insert the plug-in assembly into the pre-drilled plug-in slot 5 on the connecting beam 3 to ensure a secure and accurate connection.

[0038] Place the two sets of fixing components on both sides of the concrete beam 4, and position the concrete beam 4 between the two sets of fixing components. At the same time, connect the connecting beam 3 to the fixing components to ensure a stable and reliable connection between the connecting beam 3, the concrete beam 4, and the fixing components.

[0039] The fixing components are fixedly connected to panel 2, and a suitable connection method is used to make the whole structure form a stable whole.

[0040] Finally, locking components are used to pass through the two sets of fixing components and the concrete beam 4 to further enhance the stability and integrity of the structure, completing the installation of the entire precast reinforced concrete beam 4 slab structure.

[0041] The scheme is further optimized. The reinforcement layer includes a steel braided mesh 6, which is provided in two layers. The two layers of steel braided mesh 6 are symmetrically arranged between the two panels 2. A precast concrete insert plate 7 is provided between the two sets of steel braided mesh 6. The precast concrete insert plate 7 is inserted between the two sets of steel braided mesh 6. A butt reinforcing bar 8 is fixed at the center of the precast concrete insert plate 7. One end of the butt reinforcing bar 8 extends out of the precast concrete insert plate 7. The space between the precast concrete insert plate 7 and the panel 2 is filled with concrete. Insertion holes are opened on the precast concrete insert plate 7. The butt reinforcing bars 8 on adjacent precast concrete insert plates 7 are staggered and inserted into the insertion holes.

[0042] Two layers of symmetrical steel braided mesh 6 enhance the tensile and shear strength of the concrete slab in the plane. A precast concrete insert 7 is inserted between the two layers of steel braided mesh 6, providing support for the mesh and preventing excessive deformation during pouring or under load. Furthermore, the staggered insertion of the butt-jointed steel bars 8 on the insert 13 further enhances the overall connectivity and integrity of the reinforced layer. When the concrete slab is subjected to external forces such as earthquakes, the double-layer steel braided mesh 6 and the precast concrete insert 7 work together to better disperse and transfer stress, improving the load-bearing capacity and seismic performance of the concrete slab.

[0043] The scheme is further optimized. The fixing components include a first fixing plate 9, a second fixing plate 10 and a rib plate 11. The first fixing plate 9 and the second fixing plate 10 are arranged in an L-shaped structure. The first fixing plate 9 is fixed on the panel 2. The connecting beam 3 and the concrete beam 4 are both fixed to the second fixing plate 10. The rib plate 11 is fixed between the first fixing plate 9 and the second fixing plate 10 and is arranged perpendicular to the first fixing plate 9 and the second fixing plate 10.

[0044] The first fixing plate 9 and the second fixing plate 10 are arranged in an L-shape. The first fixing plate 9 is fixed to the panel 2, providing a stable support foundation for the entire fixing assembly. Both the connecting beam 3 and the concrete beam 4 are fixed to the second fixing plate 10. This structural form can effectively transfer the forces on the connecting beam 3 and the concrete beam 4 to the panel 2. The rib plate 11 is fixed between the first fixing plate 9 and the second fixing plate 10 and is arranged perpendicular to both, which greatly enhances the overall rigidity and stability of the fixing assembly, enabling the fixing assembly to better withstand and transmit external forces such as seismic shear forces, and ensuring the reliability of the connection between the concrete panel and the concrete beam 4.

[0045] The scheme is further optimized by setting several sets of locking components. The locking components include through bolts 12. One end of the through bolts 12 passes through the second fixing plate 10 and the concrete beam 4 of the two sets of fixing components and is threaded with a fixing nut. The through bolts 12 pass through the plug-in components.

[0046] Several sets of through bolts 12 are installed, with one end of each bolt passing through the second fixing plate 10 of the two sets of fixing components and the concrete beam 4, and threadedly connected to a fixing nut, while also passing through the plug-in assembly. This connection method, through the tightening action of the bolts, tightly connects the concrete slab, concrete beam 4, fixing components, and plug-in assembly together, forming a unified load-bearing system. Under the action of external forces such as earthquakes, the through bolts 12 can effectively resist the relative displacement between the components, ensuring the integrity and stability of the structure.

[0047] The scheme is further optimized. The plug-in assembly includes a plug plate 13, which has a cross-shaped structure. The plug plate 13 is fixed inside the concrete beam 4, and one end of the plug plate 13 extends out. A slot is opened on the bottom surface of the connecting beam 3, and the plug plate 13 is inserted into the slot.

[0048] The cross-shaped insert plate 13 is fixed inside the concrete beam 4 with one end protruding. A slot is opened on the bottom surface of the connecting beam 3, and the insert plate 13 is inserted into the slot. The cross-shaped insert plate 13 has a larger contact area and better shear resistance, which can more effectively resist the shear force of the insertion part under seismic action, prevent relative sliding or separation between the connecting beam 3 and the concrete beam 4, and improve the seismic performance of the structure.

[0049] The scheme was further optimized by creating several transverse through holes on the concrete beam 4. The transverse through holes pass through the insert plate 13, and the through bolt 12 passes through the transverse through holes.

[0050] Further optimization of the design: the first fixing plate 9 is fixed to the panel 2 by long bolts 14.

[0051] The reinforcing mesh 6 should be made of high-strength, high-toughness hot-rolled ribbed steel bars, such as HRB400 or HRB500 grade steel bars, to ensure the tensile strength of the steel bars and their bond performance with concrete. The butt-jointed steel bars 8 should also be made of the same material to ensure the reliability of their connection with the precast concrete insert slab 7.

[0052] Concrete: Concrete slabs and precast concrete inserts 7 should use high-strength concrete with a strength grade of not less than C30 to improve the load-bearing capacity and durability of the structure. For areas with special seismic requirements, the concrete strength grade may be appropriately increased.

[0053] Materials for fixing components: The first fixing plate 9, the second fixing plate 10, and the rib plate 11 should be made of high-quality steel, such as Q345 steel, to ensure sufficient strength and rigidity to withstand external forces such as earthquakes. The steel surface should be treated with anti-corrosion measures, such as spraying anti-rust paint or galvanizing, to extend its service life.

[0054] Through bolt 12 and fixing nut: High-strength bolts, such as grade 8.8 or 10.9 bolts, should be used for both the through bolt 12 and fixing nut to ensure reliable connection. The bolt and nut materials should have good tensile and shear strength and be able to withstand large loads.

[0055] During construction, the quality of processes such as laying the reinforcing mesh 6, inserting the precast concrete slabs 7, and pouring concrete should be strictly controlled. The reinforcing mesh 6 should be laid flat with uniform spacing, and the bond between it and the concrete should be firm; the precast concrete slabs 7 should be inserted in place, and the butt reinforcing bars 8 should be interlocked and tightly connected; the poured concrete should be vibrated to ensure compaction and avoid quality defects such as honeycomb and pitting.

[0056] Strengthening of connection nodes: At the connection points between the fixing components and panel 2, connecting beam 3, and concrete beam 4, a combination of methods such as welding and high-strength bolts can be used to improve the strength and reliability of the connection nodes. For example, at the connection points between the fixing components and panel 2, connecting beam 3, and concrete beam 4, additional welding points or double fixing with high-strength bolts can be used to ensure that the connection points do not fail under seismic loads.

[0057] Seismic performance assessment: During the structural design phase, a detailed seismic performance analysis should be conducted. Based on factors such as seismic intensity and site conditions, the dimensions and reinforcement of each structural component should be rationally determined. For example, by simulating the stress on the structure under seismic loading using finite element analysis software, the arrangement of the steel reinforcement mesh 6 and the dimensions of the concrete slab 13 can be optimized to ensure that the structure meets performance requirements under frequent earthquakes, design earthquakes, and rare earthquakes.

[0058] Maintenance and Inspection: During the use of the structure, the corrosion of the reinforcing steel layer, the connection status of the precast concrete insert slabs 7, and the tightness of the fixing components should be checked regularly. For example, a comprehensive inspection should be carried out every 5 years, rust removal and anti-corrosion treatment should be performed on the rusted steel bars, and loose bolts should be tightened to ensure the long-term safety and reliability of the structure.

[0059] In the description of this utility model, it should be understood that the terms "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0060] The embodiments described above are merely preferred embodiments of the present utility model and are not intended to limit the scope of the present utility model. Various modifications and improvements made to the technical solutions of the present utility model by those skilled in the art without departing from the spirit of the present utility model should fall within the protection scope defined by the claims of the present utility model.

Claims

1. A precast reinforced concrete beam-slab structure that transmits bidirectional seismic shear forces, characterized by, include: The concrete slab includes a casting frame (1), a panel (2), and a steel reinforcement layer. The panel (2) is provided in two sets. The two sets of panels (2) are symmetrically and detachably connected to the front and rear sides of the casting frame (1). The casting frame (1) and the two panels (2) enclose a casting cavity. The steel reinforcement layer is provided in the casting cavity. A connecting beam (3) is fixed on the outer wall of the front panel (2). A concrete beam (4) is arranged correspondingly to the connecting beam (3); The splicing module includes a plug-in component, a fixing component, and a locking component. The connecting beam (3) has a plug-in slot (5) and the plug-in component is inserted into the plug-in slot (5). There are two sets of fixing components and the concrete beam (4) is set between the two sets of fixing components. The connecting beam (3) and the concrete beam (4) are both connected to the fixing components. The fixing components are fixedly connected to the panel (2). The locking component passes through the two sets of fixing components and the concrete beam (4).

2. A precast reinforced concrete beam-slab structure transferring bidirectional seismic shear forces according to claim 1, characterized in that: The steel reinforcement layer includes a steel braided mesh (6), which has two layers. The two layers of steel braided mesh (6) are symmetrically arranged between the two panels (2). A precast concrete insert plate (7) is arranged between the two sets of steel braided mesh (6). The precast concrete insert plate (7) is inserted between the two sets of steel braided mesh (6). A butt steel bar (8) is fixed at the center of the precast concrete insert plate (7). One end of the butt steel bar (8) extends out of the precast concrete insert plate (7). The space between the precast concrete insert plate (7) and the panel (2) is filled with concrete. An insertion hole is provided on the precast concrete insert plate (7). The butt steel bars (8) on adjacent precast concrete insert plates (7) are staggered and inserted into the insertion hole.

3. A precast reinforced concrete beam slab structure transferring bidirectional seismic shear forces according to claim 2, characterized in that: The fixing assembly includes a first fixing plate (9), a second fixing plate (10), and a rib plate (11). The first fixing plate (9) and the second fixing plate (10) are arranged in an L-shape. The first fixing plate (9) is fixed on the panel (2). The connecting beam (3) and the concrete beam (4) are both fixed to the second fixing plate (10). The rib plate (11) is fixed between the first fixing plate (9) and the second fixing plate (10) and is arranged perpendicular to the first fixing plate (9) and the second fixing plate (10).

4. A precast reinforced concrete beam-slab structure transferring bidirectional seismic shear forces according to claim 3, characterized in that: The locking assembly is provided in several groups. The locking assembly includes a through bolt (12). One end of the through bolt (12) passes through the second fixing plate (10) of the two sets of fixing assemblies and the concrete beam (4) and is threaded with a fixing nut. The through bolt (12) passes through the plug-in assembly.

5. A precast reinforced concrete beam-slab structure transmitting bidirectional seismic shear forces according to claim 4, characterized in that: The plug-in assembly includes a plug plate (13), which has a cross-shaped structure. The plug plate (13) is fixed inside the concrete beam (4), and one end of the plug plate (13) extends out. The bottom surface of the connecting beam (3) is provided with a slot, and the plug plate (13) is inserted into the slot.

6. A precast reinforced concrete beam-slab structure transferring bidirectional seismic shear forces according to claim 5, characterized in that: The concrete beam (4) has several transverse through holes, which pass through the insert plate (13) and the through bolt (12) passes through the transverse through holes.

7. A precast reinforced concrete beam-slab structure transferring bidirectional seismic shear forces according to claim 3, characterized in that: The first fixing plate (9) is fixed to the panel (2) by long bolts (14).

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