Concrete ribbed beam single T plate, plate group, beam plate structure, construction method and application

Abstract

The invention provides a concrete ribbed beam single T plate, a plate set, a beam plate structure, a construction method and application, and belongs to the field of prefabricated constructions.The single T plate comprises a ribbed beam and a panel, and a plurality of connection assemblies are arranged at the positions, at least close to the two side edges, of the panel; a panel reinforcing rib is arranged between the connection assemblies in the width direction of the panel and used for hoisting and preventing cracking; and the adjacent concrete ribbed beam single T plates are spliced and mounted in a manner that the connection assemblies are matched with the connection pieces.

Description

Technical Field

[0001] The present invention belongs to the field of prefabricated buildings, and in particular relates to a concrete rib beam single T-plate, a plate group, a beam-plate structure, a construction method and an application thereof. Background Art

[0002] As a new type of integrated plate-beam structure, the double T-plate structure has emerged and developed in the construction industry since the 1990s. It consists of a whole precast concrete slab with a double T-shaped cross-section. The slab has built-in prestressed steel bars, which can play the dual functions of the slab and the rib beam. This structural form has a high degree of integration and high bending rigidity. It is especially suitable for multi-story or high-rise buildings with large spans. It can effectively reduce the deadweight of the structure, the amount of materials used and the amount of construction. It is regarded as one of the important directions for the development of lightweight building structures. In actual projects, the double T-plate is prefabricated as a floor slab by layer, and then put into place through a hoisting system, which can quickly form the load-bearing structure system of the building.

[0003] However, as this new structure is applied in more projects, some problems and shortcomings are exposed. First, the vertical rib beam of the double T-plate does not form a complete beam structure, because there are no stirrups and other components inside it, and it only has the characteristics of a unidirectional load-bearing plate beam, and its torsional rigidity is weak. Secondly, the large-span double T-plate has a large deadweight, which places high demands on the tower crane and construction system, increasing the difficulty of construction. Therefore, the large-span single T-plate with concrete rib beam is developed and applied because it has a complete beam structure and is relatively light in deadweight.

[0004] However, the traditional concrete rib beam single T-slab also has some disadvantages: As recorded in the Sichuan Civil Engineering and Architecture Society standard T / SSACE010-2020 "Prestressed Concrete T-Slab Design Atlas", the floor slab of a single T-slab is cantilevered on both sides and has a small width (generally 1.2 meters), which limits the application scenarios of single T-slabs. In addition, the ends of the cantilevered slab are thickened, and it is not a flat plate but a slab with a variable cross-section, which affects the beauty of the building. If a flat panel is used and the span is increased, cracks may occur, which is not conducive to hoisting and transportation. The rigid-connected single-T integrated prefabricated beam-slab structure rib beam described in Chinese patent CN220768560U does not take into account the collision problem of adjacent rib beams, the shear resistance problem of the rib beam ends, and the installation construction process problem.

[0005] It should be noted that the information disclosed in the background technology section of the invention is only intended to deepen the understanding of the general background technology of the invention, and should not be regarded as an admission or suggestion in any form that the information constitutes prior art already known to those skilled in the art. Summary of the invention

[0006] One object of the present invention is to provide a single T-plate with a large span and easy installation; The second object of the present invention is to provide a large-span, easy-to-install single T-plate set for composite floor construction; The third object of the present invention is to provide a beam-slab structure composed of a single T-slab; The fourth object of the present invention is to promote the application of a large-span, easy-to-install single T-board in the field of prefabricated buildings; To achieve the above-mentioned first object, the present invention first provides a concrete rib beam single T-slab, comprising a rib beam and a panel, characterized in that a plurality of docking components are respectively provided on the panel at least near two side edges, and the docking components are implemented as at least one of the following: Arrange panel surface reinforcement ribs between the connecting components along the panel width direction; A connecting piece for connecting adjacent concrete rib beam single T-plates is arranged on the connecting assembly.

[0007] Preferably, a plurality of connecting components are defined as a panel edge connecting component close to the side of the panel and a panel mid-connecting component located at the centerline of the panel; the panel surface reinforcement ribs are installed on the panel edge connecting component and the panel mid-connecting component; and connecting parts for connecting adjacent concrete rib beam single T-plates are provided on the panel edge connecting component.

[0008] Preferably, the docking assembly includes a mounting seat and a mounting bolt, the mounting seat is fixed to the panel, and the mounting seat is provided with a mounting hole for threaded installation of the mounting bolt.

[0009] Preferably, the panel is provided with a plurality of panel structural ribs; The panel structural ribs are arranged to extend in the panel width direction from a position close to the top surface of the panel to a position close to the bottom surface of the panel; or, the panel structural ribs are divided along the panel width direction into a first section close to the top surface of the panel, a second section close to the bottom surface or the middle position of the panel, and a connecting section connecting the first section and the second section.

[0010] Preferably, the rib beam is provided with at least: A steel cage, wherein the steel cage comprises top reinforcement, bottom reinforcement and stirrups; Prestressed tendons, the prestressed tendons are arranged between the bottom tendons and the top tendons along the beam length direction of the rib beam; The embedded sleeve is embedded in the end of the rib beam and located between the bottom reinforcement and the top reinforcement, and additional shear reinforcement is installed in the embedded sleeve.

[0011] Preferably, a plurality of shear keys are provided on the rib beam along the length direction of the beam, and the shear keys extend above the panel.

[0012] The technical effects produced by the above technical solution of the present invention come from one or more of the following combinations: This application can realize a large-span flat plate structure through the flexible application of the connecting components. After practice, at least two beam widths of 200 and 250 can be realized, and various combination structures of plate widths of 1500 / 1800 / 2100 / 2400 / 2700 can be realized. Therefore, the number of components hoisted can be reduced, and the hoisting efficiency can be improved; the number of rib beams can be reduced, thereby reducing the sense of architectural oppression caused by dense ribs and improving the beauty of the building; and different plate widths can be combined to achieve layout flexibility.

[0013] The rib beam is a complete beam structure. The internal steel cage, prestressed tendons and embedded sleeves improve the rib beam structure while forming a post-cast space on the frame beam. The reinforcements are staggered to achieve safety and convenience in installation.

[0014] Compared with the existing composite beam-slab, the additional shear reinforcement can be arranged in the middle of the rib beam, so that the additional shear reinforcement will not fall off due to pull-out as in the traditional technology, thereby improving the shear resistance.

[0015] Component standardization can realize component productization and save costs.

[0016] To achieve the above-mentioned second purpose, the present invention provides a concrete rib beam single T-plate group, characterized in that it comprises a plurality of concrete rib beam single T-plates; the connecting components between the concrete rib beam single T-plates adjacent to the side of the panel are connected through the connecting parts; the concrete rib beam single T-plates opposite to the end of the rib beam are erected on the main structure to form a post-casting space.

[0017] Preferably, the rib beam is provided with at least: A steel cage, wherein the steel cage comprises top reinforcement, bottom reinforcement and stirrups; Prestressed tendons, the prestressed tendons are arranged between the bottom tendons and the top tendons along the beam length direction of the rib beam; An embedded sleeve, which is embedded in the end of the rib beam and located between the bottom reinforcement and the top reinforcement, and an additional shear reinforcement is installed in the embedded sleeve; The bottom reinforcement, the top reinforcement and the embedded sleeve between the concrete rib beam single T-plates opposite to the ends of the rib beam are arranged in a staggered manner.

[0018] Preferably, the prestressed tendons are implemented as a non-reinforced structure.

[0019] The technical effects produced by the above technical solution of the present invention come from one or more of the following combinations: This application can realize a large-span flat plate structure through the flexible application of the connecting components. After practice, at least two beam widths of 200 and 250 can be realized, and various combination structures of plate widths of 1500 / 1800 / 2100 / 2400 / 2700 can be realized. Therefore, the number of components hoisted can be reduced, and the hoisting efficiency can be improved; the number of rib beams can be reduced, thereby reducing the sense of architectural oppression caused by dense ribs and improving the beauty of the building; and different plate widths can be combined to achieve layout flexibility.

[0020] Adjacent single T-plates are joined together by connecting components, which can achieve close jointing or form joints for post-casting.

[0021] The rib beam is a complete beam structure. The internal steel cage, prestressed tendons and embedded sleeves improve the rib beam structure while forming a post-cast space on the frame beam. The reinforcements are staggered to achieve safety and convenience in installation.

[0022] Compared with the existing composite beam-slab, the additional shear reinforcement can be arranged in the middle of the rib beam, so that the additional shear reinforcement will not fall off due to pull-out as in the traditional technology, thereby improving the shear resistance.

[0023] Component standardization can realize component productization and save costs.

[0024] To achieve the above second purpose, the present invention also provides a construction method of a concrete rib beam single T-plate group, which is characterized by comprising the following steps: Precast concrete ribbed single T-slab, with the panel and ribbed beam cast in one piece, a plurality of connecting components are respectively provided on the panel at least near the two sides, and panel surface reinforcement ribs are provided between the connecting components along the panel width direction; Install the concrete rib beam single T-plate group, hoist the concrete rib beam single T-plate to the main structure, remove the plate surface reinforcement ribs, and then connect the connecting components between the concrete rib beam single T-plates adjacent to the side of the panel through the connecting piece.

[0025] Preferably, when a single T-slab with a precast concrete rib beam is used, a plurality of docking components are defined as a board edge docking component close to the side of the panel and a board middle docking component located at the center line of the panel, and the board surface reinforcement rib is installed on the board edge docking component and the board middle docking component; When installing the concrete rib beam single T-plate group, the plate edge connecting components corresponding to the partial positions of the adjacent concrete rib beam single T-plates are connected through connecting parts, and then the plate surface reinforcement ribs are removed, and then the plate edge connecting components of the removed plate surface reinforcement ribs are connected to the connecting components of the adjacent concrete rib beam single T-plates through connecting parts.

[0026] The technical effects produced by the above technical solution of the present invention come from one or more of the following combinations: This application can realize a large-span flat plate structure through the flexible application of the connecting components. After practice, at least two beam widths of 200 and 250 can be realized, and various combination structures of plate widths of 1500 / 1800 / 2100 / 2400 / 2700 can be realized. Therefore, the number of components hoisted can be reduced, and the hoisting efficiency can be improved; the number of rib beams can be reduced, thereby reducing the sense of architectural oppression caused by dense ribs and improving the beauty of the building; and different plate widths can be combined to achieve layout flexibility.

[0027] To achieve the above three purposes, the present invention provides a composite beam-slab structure, characterized in that it includes a concrete rib beam single T-slab group, and a cast-in-place layer is cast on the concrete rib beam single T-slab group.

[0028] To achieve the above three purposes, the present invention also provides a construction method of a composite beam-slab structure, which is characterized by comprising the following steps: Precast concrete ribbed single T-slab, with the panel and ribbed beam cast in one piece, a plurality of connecting components are respectively provided on the panel at least near the two sides, and panel surface reinforcement ribs are provided between the connecting components along the panel width direction; Install the concrete rib beam single T-plate group, hoist the concrete rib beam single T-plate to the main structure, remove the plate surface reinforcement ribs, and connect the connecting components between the adjacent concrete rib beam single T-plates on the side of the panel through the connecting piece; Pour the cast-in-place layer on the concrete rib beam single T-slab group.

[0029] Preferably, the adjacent concrete rib beam single T-plates on the side of the panel are closely joined or post-cast joints are formed.

[0030] To achieve the above four purposes, the present invention provides an application of a concrete rib beam single T-plate, characterized in that the concrete rib beam single T-plate is applied to floor slabs, floor slabs and exterior wall panels. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] Figure 1 The structural schematic diagram of the single T-slab with concrete rib beam is expressed.

[0032] Figure 2 The steel structure layout diagram of the single T-slab with concrete rib beam is expressed.

[0033] Figure 3 The front view of the single T-slab with concrete rib beam is expressed.

[0034] Figure 4 The front view of the steel structure showing the single T-slab with concrete ribs.

[0035] Figure 5 A comparison diagram showing the locations of reinforcement bars at both ends of the rib beam in a single T-slab with concrete rib beams.

[0036] Figure 6 The structural side view of the rib beam in the concrete rib beam single T-slab is expressed.

[0037] Figure 7 The structural schematic diagram of the single T-plate group of concrete rib beams is expressed.

[0038] Figure 8 The structural schematic diagram of the composite beam-slab structure is expressed.

[0039] Among them: 1. Rib beam; 11. Steel cage; 111. Bottom reinforcement; 112. Top reinforcement; 113. Hoop reinforcement; 12. Prestressed reinforcement; 13. Embedded sleeve; 131. Additional shear reinforcement; 132. Embedded shear reinforcement; 14. Shear key; 2. Panel; 20. Joint; 21. Panel structural reinforcement; 211. First section; 212. Second section; 213. Connecting section; 3. Connecting assembly; 301. Mounting seat; 302. Mounting bolt; 31. Board edge connecting assembly; 32. Board middle connecting assembly; 33. Board surface reinforcement rib; 34. Connecting piece; 4. Cast-in-place layer; 41. Anti-cracking reinforcement; 5. Frame beam; 6. Temporary formwork. DETAILED DESCRIPTION

[0040] The following description is given to enable those skilled in the art to implement and use the invention and incorporate it into a specific application context. Various modifications, as well as various uses in different applications will be readily apparent to those skilled in the art, and the general principles defined herein are applicable to a wide range of embodiments. Thus, the present invention is not limited to the embodiments given herein, but should be granted the broadest scope consistent with the principles and novel features disclosed herein.

[0041] In the following detailed description, many specific details are set forth to provide a more thorough understanding of the present invention. However, it will be apparent to those skilled in the art that the practice of the present invention need not be limited to these specific details. In other words, known structures and devices are shown in block diagram form without detailed display to avoid obscuring the present invention.

[0042] The reader is reminded of all documents and literature filed simultaneously with this specification and open to public inspection, and the contents of all such documents and literature are incorporated herein by reference. Unless otherwise directly stated, all features disclosed in this specification (including any attached claims, abstracts and drawings) can be replaced by alternative features for achieving the same, equivalent or similar purposes. Therefore, unless otherwise explicitly stated, each feature disclosed is only an example of a group of equivalent or similar features.

[0043] Note that, where used, the symbols left, right, front, back, top, bottom, forward, reverse, clockwise and counterclockwise are used only for convenience and do not imply any specific fixed direction. In fact, they are used to reflect the relative position and / or direction between the various parts of the object. In addition, the terms "first" and "second" are used only for descriptive purposes and should not be understood as indicating or implying relative importance.

[0044] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0045] Note that, in the case of use, further, preferably, further and more preferably are simple beginnings for explaining another embodiment based on the previous embodiment, and the content of further, preferably, further or more preferably followed by the above embodiment is combined with the previous embodiment as a complete composition of another embodiment. Several further, preferably, further or more preferably settings followed by the same embodiment can be arbitrarily combined to form another embodiment.

[0046] The present invention is described in detail below in conjunction with the accompanying drawings and specific embodiments. Note that the aspects described below in conjunction with the accompanying drawings and specific embodiments are only exemplary and should not be construed as limiting the scope of protection of the present invention in any way.

[0047] Structural Example 1: Please combine Figure 1 to Figure 8 This embodiment provides a concrete rib beam single T-plate, comprising a rib beam 1 and a panel 2. The panel 2 is provided with a plurality of connecting components 3 at least near two sides, and the connecting components 3 are used in at least one of the following two structures: first, a board surface reinforcing rib 33 is provided between the connecting components 3 along the board width direction of the panel 2; second, a connecting piece 34 for connecting adjacent concrete rib beam single T-plates is provided on the connecting components 3.

[0048] First, please combine Figure 1 and Figure 2 In order to achieve the first and second structural purposes, the number of the connecting components 3 is multiple, and they are arranged at intervals along the length of the beam (or the length of the plate). There is no restriction on the size of the interval, which depends on the bending resistance of the panel 2 determined by the concrete performance and thickness.

[0049] For further information, please refer to Figure 3 and Figure 4 , multiple connection components 3 are defined as a board edge connection component 31 close to the side of the panel 2 and a board middle connection component 32 located at the center line of the panel 2; the board surface reinforcement rib 33 is installed on the board edge connection component 31 and the board middle connection component 32; the board edge connection component 31 is provided with a connection piece 34 for connecting adjacent concrete rib beam single T-slabs. The multiple connection components 3 are defined separately here for a more convenient description later. It should be noted that the board middle connection component 32 and the board edge connection component 31 have the same structure, but are located at different positions on the board.

[0050] For details, please refer to Figure 3 The connection assembly 3 includes a mounting seat 301 and a mounting bolt 302. The mounting seat 301 is fixed to the panel 2 (in the steel structure arrangement, the mounting seat 301 can be welded to the panel structural rib), and the mounting seat 301 is provided with a mounting hole for threaded installation of the mounting bolt 302. Preferably, the installation is a channel steel, one side plate of the channel steel is buried and fixed on the panel 2, and the other side plate is provided with a mounting hole for the mounting bolt 302 to install. It is worth mentioning that the selection of the mounting seat 301 in this embodiment is not limited to the channel steel structure, and other steel structures, such as I-beams, Z-shaped steels, etc. can also be used. The purpose is to provide a mounting seat 301 that can be firmly fixed in the panel 2, so as to provide the mounting bolt 302 to install the connection piece 34 or the plate surface reinforcement rib 33. Further, in this embodiment, the connection piece 34 and the plate surface reinforcement rib 33 can be implemented as steel pipes, which are installed on the mounting seat 301 through the holes of the mounting bolts 302. Suitable, the plate surface reinforcement rib 33 is implemented as a relatively long steel tube because it is in the same direction as the plate width span, and the connecting piece 34 is used for splicing adjacent concrete rib beam single T plates, so it is implemented as a relatively short steel tube; further, both the long steel tube and the short steel tube are implemented as square steel tubes.

[0051] Specifically, on the same straight line, a panel edge connection component 31 is respectively arranged at the side of the panel 2, and a panel middle connection component 32 is arranged at the middle position of the panel 2, so that the panel surface reinforcement ribs 33 are arranged on at least three connection components 3. And this is a group, and the spacing is arranged along the beam length (or panel length) direction, so that the panel surface rigidity can be improved and the bending resistance of the panel 2 during demoulding, transportation and hoisting can be increased.

[0052] For further information, see Figure 1 When the concrete rib beam single T-slab is used as the composite bottom plate of the floor, a plurality of shear keys 14 are provided on the rib beam 1 along the beam length direction, and the shear keys 14 extend above the panel 2. Specifically, the shear keys 14 are shear bars, which can be welded to the internal structural bars (reinforcement cage 11) of the rib beam 1.

[0053] The panel 2 and the rib beam 1 are integrally cast and formed, and a plurality of panel structural ribs 21 are provided in the panel 2. Specifically, the panel structural ribs 21 are arranged extending from a position close to the top surface of the panel 2 to a position close to the bottom surface of the panel 2 in the direction of the panel width; Alternatively, see Figure 4 The panel structural ribs 21 are divided into a first section 211 close to the top surface of the panel 2, a second section 212 close to the bottom surface or the middle of the panel 2, and a connecting section 213 connecting the first section 211 and the second section 212 along the width direction of the panel. This embodiment is the best choice. Compared with the prior art, the structural ribs in the panel 2 are all arranged at the upper part and are linear. In conjunction with the above-mentioned panel surface reinforcement ribs 33, placing the mounting seat 301 at the upper part of the panel 2 can increase the bending resistance of the lifting plate during demoulding, transportation and hoisting. The extension of the panel structural ribs 21 to the lower part of the plate can increase the bending resistance of the bottom of the plate during normal use after the cast-in-place layer 4 is cast.

[0054] Similar to panel 2, rib beam 1 also has structural ribs. Figure 5 , Figure 6 and Figure 8 At least a steel cage 11, prestressed tendons 12 and embedded sleeves 13 are arranged in the rib beam 1. Further, the steel cage 11 includes top tendons 112, bottom tendons 111 and stirrups 113; the prestressed tendons 12 are arranged between the bottom tendons 111 and the top tendons 112 along the beam length direction of the rib beam 1; the embedded sleeve 13 is embedded in the end of the rib beam 1 and is located between the bottom tendons 111 and the top tendons 112, and an additional shearing tendon 131 is installed in the embedded sleeve 13. Further, one end of the embedded sleeve 13 is embedded in the rib beam 1 through the embedded shearing tendons 132, and the other end is exposed to form an installation end for the additional shearing tendons 13, forming a three-section structure as a whole.

[0055] It should be noted that this embodiment is implemented in a scenario where a single T-plate of a concrete rib beam is arranged on a frame beam 5. Two single T-plates of concrete rib beams are hoisted on the frame beam 5, and the frame beam 5 can be implemented as a composite beam, that is, the single T-plate of the concrete rib beam is hoisted on the prefabricated part of the frame beam 5. A post-cast space is formed between the two, which is also the post-cast part of the frame beam 5. The rib beam of the single T-plate of the concrete rib beam forms a secondary beam through the post-cast space. Therefore, a threaded additional shear reinforcement can be screwed into the embedded sleeve 13 to form a shear effect. Compared with the prior art, the embedded sleeve 13 in the composite beam is randomly placed or set in the upper composite layer of the beam with the largest bending moment, so that the additional shear reinforcement at the maximum bending moment is tensile, and the anchoring of the additional shear reinforcement under tension and the concrete has the risk of slippage, which is unsafe for shear deviation. In this embodiment, the embedded sleeve 13 can be set at a position in the middle of the beam close to the rib beam 1, so that the position can be set in the middle of the beam or below the secondary beam.

[0056] Furthermore, in order to improve the rigidity of the post-cast part of the composite beam, the bottom reinforcements 111 and 111, the top reinforcements 112 and 112, and the additional shear reinforcements 131 and 131 can be staggered left and right, or up and down, relative to the rib beam 1 erected on the composite beam. Therefore, when prefabricating the concrete rib beam single T-slab, the positions of the structural reinforcements at both ends of the concrete rib beam single T-slab can be designed in two ways, that is, the structural reinforcements at both ends of the rib beam 1 can be designed with different reinforcement positions to meet this situation. For details, please refer to Figure 5 , Figure 5 This is a structural effect display diagram, which compares two different reinforcement methods at both ends of the rib beam 1. The red mark indicates the reinforcement position at one end of the rib beam 1, including the bottom reinforcement 111a, the top reinforcement 112a and the embedded sleeve 13a; in contrast, the bottom reinforcement 111b, the top reinforcement 112b and the embedded sleeve 13b indicate the reinforcement position at the other end of the rib beam 1.

[0057] Furthermore, the prestressed tendons 12 are intended to strengthen the rigidity of the rib beam 1 , and thus in this embodiment can be implemented as a non-reinforced structure, that is, the concrete rib beam single T-plate is cast and formed and then cut off at the end.

[0058] As a preferred implementation of this embodiment, the structural reinforcements arranged from bottom to top in the rib beam 1 are bottom reinforcement 111, prestressed reinforcement 12, additional shear reinforcement 131 and top reinforcement 112. Among them, the bottom reinforcement 111 and top reinforcement 112 are ordinary steel bars, which are exposed and avoid the bottom reinforcement 111 of the rib beam 1 at the relative position on both sides, up and down; the prestressed reinforcement 12 is not exposed, that is, it is cut off after tensioning; the additional short shear reinforcement passes through the embedded sleeve 13, is exposed and screwed into the installation after the hoisting plate, and avoids the bottom reinforcement 111 of the rib beam 1 at the relative position on both sides, up and down.

[0059] Beneficial effects of this embodiment: This application can realize a large-span flat plate structure through the flexible application of the connecting assembly 3. After practice, at least two beam widths (mm) of 200 and 250 can be realized, and multiple combination structures of plate widths (mm) of 1500 / 1800 / 2100 / 2400 / 2700 can be realized. Therefore, the number of components hoisted can be reduced, and the hoisting efficiency can be improved; the number of rib beams 1 can be reduced, thereby reducing the sense of architectural oppression caused by dense ribs and improving the beauty of the building; and different plate widths can be combined to achieve layout flexibility.

[0060] The rib beam 1 is a complete beam structure. The internal steel cage 11, prestressed tendons 12 and embedded sleeves 13 improve the structure of the rib beam 1 while forming a post-cast space on the frame beam 5. The various reinforcements are staggered to achieve safety and convenience in installation.

[0061] Compared with the existing composite beam-slab, the additional shear reinforcement 131 can be arranged in the middle of the rib beam 1, so that the additional shear reinforcement 131 will not fall off due to pull-out as in the traditional technology, thereby improving the shear resistance.

[0062] Component standardization can realize component productization and save costs.

[0063] Structural Example 2: Please refer to Figure 7 , Figure 8 Combined with Figure 1 to Figure 6 This embodiment provides a concrete rib beam single T-plate group, including multiple concrete rib beam single T-plates in Embodiment 1. Specifically, the connecting assembly 3 between the adjacent concrete rib beam single T-plates on the side of the panel 2 is connected by a connecting piece 34; the concrete rib beam single T-plates at the ends of the rib beam 1 are placed on the main structure to form a post-casting space.

[0064] Take the main structure as composite frame beam 5 as an example, please combine Figure 7 and Figure 8 A row of concrete rib beam single T-plates are set up on both sides of the frame beam 5, and each row of adjacent concrete rib beam single T-plates are connected by connecting pieces 34 and connecting components 3, and the connecting method is close connection or leaving a certain post-casting joint 20; Figure 8 It is a structural diagram showing a single T-slab of a concrete rib beam relatively overlapped on the frame beam 5.

[0065] The concrete rib beam single T-slab comprises a rib beam 1 and a panel 2. The panel 2 is provided with a plurality of connecting components 3 at least near both sides, and the connecting components 3 are used in at least one of the following two structures: first, a board surface reinforcing rib 33 is provided between the connecting components 3 along the board width direction of the panel 2; second, a connecting piece 34 for connecting adjacent concrete rib beam single T-slabs is provided on the connecting components 3.

[0066] First, please combine Figure 1 and Figure 2 In order to achieve the first and second structural purposes, the number of the connecting components 3 is multiple, and they are arranged at intervals along the length of the beam (or the length of the plate). There is no restriction on the size of the interval, which depends on the bending resistance of the panel 2 determined by the concrete performance and thickness.

[0067] For further information, please refer to Figure 3 and Figure 4, multiple connection components 3 are defined as a board edge connection component 31 close to the side of the panel 2 and a board middle connection component 32 located at the center line of the panel 2; the board surface reinforcement rib 33 is installed on the board edge connection component 31 and the board middle connection component 32; the board edge connection component 31 is provided with a connection piece 34 for connecting adjacent concrete rib beam single T-slabs. The multiple connection components 3 are defined separately here for a more convenient description later. It should be noted that the board middle connection component 32 and the board edge connection component 31 have the same structure, but are located at different positions on the board.

[0068] For details, please refer to Figure 3 The connection assembly 3 includes a mounting seat 301 and a mounting bolt 302. The mounting seat 301 is fixed to the panel 2 (in the steel structure arrangement, the mounting seat 301 can be welded to the panel structural rib), and the mounting seat 301 is provided with a mounting hole for threaded installation of the mounting bolt 302. Preferably, the installation is a channel steel, one side plate of the channel steel is buried and fixed on the panel 2, and the other side plate is provided with a mounting hole for the mounting bolt 302 to install. It is worth mentioning that the selection of the mounting seat 301 in this embodiment is not limited to the channel steel structure, and other steel structures, such as I-beams, Z-shaped steels, etc. can also be used. The purpose is to provide a mounting seat 301 that can be firmly fixed in the panel 2, so as to provide the mounting bolt 302 to install the connection piece 34 or the plate surface reinforcement rib 33. Further, in this embodiment, the connection piece 34 and the plate surface reinforcement rib 33 can be implemented as steel pipes, which are installed on the mounting seat 301 through the holes of the mounting bolts 302. Suitable, the plate surface reinforcement rib 33 is implemented as a relatively long steel tube because it is in the same direction as the plate width span, and the connecting piece 34 is used for splicing adjacent concrete rib beam single T plates, so it is implemented as a relatively short steel tube; further, both the long steel tube and the short steel tube are implemented as square steel tubes.

[0069] Specifically, on the same straight line, a panel edge connection component 31 is respectively arranged at the side of the panel 2, and a panel middle connection component 32 is arranged at the middle position of the panel 2, so that the panel surface reinforcement ribs 33 are arranged on at least three connection components 3. And this is a group, and the spacing is arranged along the beam length (or panel length) direction, so that the panel surface rigidity can be improved and the bending resistance of the panel 2 during demoulding, transportation and hoisting can be increased.

[0070] For further information, see Figure 1 When the concrete rib beam single T-slab is used as the composite bottom plate of the floor, a plurality of shear keys 14 are provided on the rib beam 1 along the beam length direction, and the shear keys 14 extend above the panel 2. Specifically, the shear keys 14 are shear bars, which can be welded to the internal structural bars (reinforcement cage 11) of the rib beam 1.

[0071] The panel 2 and the rib beam 1 are integrally cast and formed, and a plurality of panel structural ribs 21 are provided in the panel 2. Specifically, the panel structural ribs 21 are arranged extending from a position close to the top surface of the panel 2 to a position close to the bottom surface of the panel 2 in the direction of the panel width; Alternatively, see Figure 4 The panel structural ribs 21 are divided into a first section 211 close to the top surface of the panel 2, a second section 212 close to the bottom surface or the middle of the panel 2, and a connecting section 213 connecting the first section 211 and the second section 212 along the width direction of the panel. This embodiment is the best choice. Compared with the prior art, the structural ribs in the panel 2 are all arranged at the upper part and are linear. In conjunction with the above-mentioned panel surface reinforcement ribs 33, placing the mounting seat 301 at the upper part of the panel 2 can increase the bending resistance of the lifting plate during demoulding, transportation and hoisting. The extension of the panel structural ribs 21 to the lower part of the plate can increase the bending resistance of the bottom of the plate during normal use after the cast-in-place layer 4 is cast.

[0072] Similar to panel 2, rib beam 1 also has structural ribs. Figure 5 , Figure 6 and Figure 8 At least a steel cage 11, prestressed tendons 12 and embedded sleeves 13 are arranged in the rib beam 1. Further, the steel cage 11 includes top tendons 112, bottom tendons 111 and stirrups 113; the prestressed tendons 12 are arranged between the bottom tendons 111 and the top tendons 112 along the beam length direction of the rib beam 1; the embedded sleeve 13 is embedded in the end of the rib beam 1 and is located between the bottom tendons 111 and the top tendons 112, and an additional shearing tendon 131 is installed in the embedded sleeve 13. Further, one end of the embedded sleeve 13 is embedded in the rib beam 1 through the embedded shearing tendons 132, and the other end is exposed to form an installation end for the additional shearing tendons 13, forming a three-section structure as a whole.

[0073] It should be noted that this embodiment is implemented in a scenario where a single T-plate of a concrete rib beam is arranged on a frame beam 5. Two single T-plates of concrete rib beams are hoisted on the frame beam 5, and the frame beam 5 can be implemented as a composite beam, that is, the single T-plate of the concrete rib beam is hoisted on the prefabricated part of the frame beam 5. A post-cast space is formed between the two, which is also the post-cast part of the frame beam 5. The rib beam of the single T-plate of the concrete rib beam forms a secondary beam through the post-cast space. Therefore, a threaded additional shear reinforcement can be screwed into the embedded sleeve 13 to form a shear effect. Compared with the prior art, the embedded sleeve 13 in the composite beam is randomly placed or set in the upper composite layer of the beam with the largest bending moment, so that the additional shear reinforcement at the maximum bending moment is tensile, and the anchoring of the additional shear reinforcement under tension and the concrete has the risk of slippage, which is unsafe for shear deviation. In this embodiment, the embedded sleeve 13 can be set at a position in the middle of the beam close to the rib beam 1, so that the position can be set in the middle of the beam or below the secondary beam.

[0074] Furthermore, in order to improve the rigidity of the post-cast part of the composite beam, the bottom reinforcements 111 and 111, the top reinforcements 112 and 112, and the additional shear reinforcements 131 and 131 can be staggered left and right, or up and down, relative to the rib beam 1 erected on the composite beam. Therefore, when prefabricating the concrete rib beam single T-slab, the positions of the structural reinforcements at both ends of the concrete rib beam single T-slab can be designed in two ways, that is, the structural reinforcements at both ends of the rib beam 1 can be designed with different reinforcement positions to meet this situation. For details, please refer to Figure 5 , Figure 5 A structural effect display diagram compares two different reinforcement methods at both ends of the rib beam 1, wherein the red mark indicates the reinforcement position at one end of the rib beam 1, including the bottom reinforcement 111a, the top reinforcement 112a and the embedded sleeve 13a; in contrast, the bottom reinforcement 111b, the top reinforcement 112b and the embedded sleeve 13b indicate the reinforcement position at the other end of the rib beam 1.

[0075] Furthermore, the prestressed tendons 12 are intended to strengthen the rigidity of the rib beam 1 , and thus in this embodiment can be implemented as a non-reinforced structure, that is, the concrete rib beam single T-plate is cast and formed and then cut off at the end.

[0076] As a preferred implementation of this embodiment, the structural reinforcements arranged from bottom to top in the rib beam 1 are bottom reinforcement 111, prestressed reinforcement 12, additional shear reinforcement 131 and top reinforcement 112. Among them, the bottom reinforcement 111 and top reinforcement 112 are ordinary steel bars, which are exposed and avoid the bottom reinforcement 111 of the rib beam 1 at the relative position on both sides, up and down; the prestressed reinforcement 12 is not exposed, that is, it is cut off after tensioning; the additional short shear reinforcement passes through the embedded sleeve 13, is exposed and screwed into the installation after the hoisting plate, and avoids the bottom reinforcement 111 of the rib beam 1 at the relative position on both sides, up and down.

[0077] Beneficial effects of this embodiment: This application can realize a large-span flat plate structure through the flexible application of the connecting assembly 3. After practice, at least two beam widths (mm) of 200 and 250 can be realized, and multiple combination structures of plate widths (mm) of 1500 / 1800 / 2100 / 2400 / 2700 can be realized. Therefore, the number of components hoisted can be reduced, and the hoisting efficiency can be improved; the number of rib beams 1 can be reduced, thereby reducing the sense of architectural oppression caused by dense ribs and improving the beauty of the building; and different plate widths can be combined to achieve layout flexibility.

[0078] Adjacent single T-plates can be joined together by connecting components 3 to achieve close joining or to form joints 20 for post-casting.

[0079] The rib beam 1 is a complete beam structure. The internal steel cage 11, prestressed tendons 12 and embedded sleeves 13 improve the structure of the rib beam 1 while forming a post-cast space on the frame beam 5. The various reinforcements are staggered to achieve safety and convenience in installation.

[0080] Compared with the existing composite beam-slab, the additional shear reinforcement 131 can be arranged in the middle of the rib beam 1, so that the additional shear reinforcement 131 will not fall off due to pull-out as in the traditional technology, thereby improving the shear resistance.

[0081] Component standardization can realize component productization and save costs.

[0082] Structural Example 3: See also Figure 8 Combined with Figure 1 to Figure 7 This embodiment also provides a composite beam-slab structure, including the concrete rib beam single T-slab group of structural embodiment 2. The core thereof is to cast a cast-in-place layer 4 on the concrete rib beam single T-slab group to form a floor slab.

[0083] The concrete rib beam single T-slab group includes a plurality of concrete rib beam single T-slabs, and the concrete rib beam single T-slab includes a rib beam 1 and a panel 2. Specifically, the connecting assembly 3 between the adjacent concrete rib beam single T-slabs on the side of the panel 2 is connected by a connecting piece 34; the concrete rib beam single T-slabs opposite to the end of the rib beam 1 are erected on the main structure to form a post-casting space.

[0084] Taking the composite frame beam 5 as the main structure as an example, a row of concrete rib beam single T-plates are set on both sides of the frame beam 5, and each row of adjacent concrete rib beam single T-plates are spliced ​​and connected through connecting parts 34 and connecting components 3. The splicing method is close splicing or leaving a certain post-cast joint 20. A temporary formwork 6 is supported under the post-cast joint 20 to facilitate the pouring of the cast-in-place layer 4; a post-cast space is formed between the left and right opposite concrete rib beam single T-plates on the frame beam 5, and anti-cracking steel bars 41 are overlapped on the post-cast space.

[0085] Furthermore, the concrete rib beam single T-plate comprises a rib beam 1 and a panel 2. Among them, a plurality of connecting components 3 are respectively provided on the panel 2 at least near the two sides, and the connecting components 3 are used for at least one of the following two structures: first, a board surface reinforcing rib 33 is provided between the connecting components 3 along the board width direction of the panel 2; second, a connecting piece 34 for connecting adjacent concrete rib beam single T-plates is provided on the connecting component 3.

[0086] First, please combine Figure 1 and Figure 2 In order to achieve the first and second structural purposes, the number of the connecting components 3 is multiple, and they are arranged at intervals along the length of the beam (or the length of the plate). There is no restriction on the size of the interval, which depends on the bending resistance of the panel 2 determined by the concrete performance and thickness.

[0087] For further information, please refer to Figure 3 and Figure 4, multiple connection components 3 are defined as a board edge connection component 31 close to the side of the panel 2 and a board middle connection component 32 located at the center line of the panel 2; the board surface reinforcement rib 33 is installed on the board edge connection component 31 and the board middle connection component 32; the board edge connection component 31 is provided with a connection piece 34 for connecting adjacent concrete rib beam single T-slabs. The multiple connection components 3 are defined separately here for a more convenient description later. It should be noted that the board middle connection component 32 and the board edge connection component 31 have the same structure, but are located at different positions on the board.

[0088] For details, please refer to Figure 3 The connection assembly 3 includes a mounting seat 301 and a mounting bolt 302. The mounting seat 301 is fixed to the panel 2 (in the steel structure arrangement, the mounting seat 301 can be welded to the panel structural rib), and the mounting seat 301 is provided with a mounting hole for threaded installation of the mounting bolt 302. Preferably, the installation is a channel steel, one side plate of the channel steel is buried and fixed on the panel 2, and the other side plate is provided with a mounting hole for the mounting bolt 302 to install. It is worth mentioning that the selection of the mounting seat 301 in this embodiment is not limited to the channel steel structure, and other steel structures, such as I-beams, Z-shaped steels, etc. can also be used. The purpose is to provide a mounting seat 301 that can be firmly fixed in the panel 2, so as to provide the mounting bolt 302 to install the connection piece 34 or the plate surface reinforcement rib 33. Further, in this embodiment, the connection piece 34 and the plate surface reinforcement rib 33 can be implemented as steel pipes, which are installed on the mounting seat 301 through the holes of the mounting bolts 302. Suitable, the plate surface reinforcement rib 33 is implemented as a relatively long steel tube because it is in the same direction as the plate width span, and the connecting piece 34 is used for splicing adjacent concrete rib beam single T plates, so it is implemented as a relatively short steel tube; further, both the long steel tube and the short steel tube are implemented as square steel tubes.

[0089] Specifically, on the same straight line, a panel edge connection component 31 is respectively arranged at the side of the panel 2, and a panel middle connection component 32 is arranged at the middle position of the panel 2, so that the panel surface reinforcement ribs 33 are arranged on at least three connection components 3. And this is a group, and the spacing is arranged along the beam length (or panel length) direction, so that the panel surface rigidity can be improved and the bending resistance of the panel 2 during demoulding, transportation and hoisting can be increased.

[0090] For further information, see Figure 1When the concrete rib beam single T-slab is used as the composite bottom plate of the floor, a plurality of shear keys 14 are provided on the rib beam 1 along the beam length direction, and the shear keys 14 extend above the panel 2. Specifically, the shear keys 14 are shear bars, which can be welded to the internal structural bars (reinforcement cage 11) of the rib beam 1. After the concrete rib beam single T-slab group is installed, the mounting seat 301 on the board cooperates with the connecting piece 34 to become the shear member of the cast-in-place layer 4 on the one hand, and to facilitate the laying of the structural bars of the cast-in-place layer 4 on the other hand. The mounting seat 301 can be used as a horse stool for the structural bars of the cast-in-place layer 4.

[0091] The panel 2 and the rib beam 1 are integrally cast and formed, and a plurality of panel structural ribs 21 are provided in the panel 2. Specifically, the panel structural ribs 21 are arranged extending from a position close to the top surface of the panel 2 to a position close to the bottom surface of the panel 2 in the direction of the panel width; Alternatively, see Figure 4 The panel structural ribs 21 are divided into a first section 211 close to the top surface of the panel 2, a second section 212 close to the bottom surface or the middle of the panel 2, and a connecting section 213 connecting the first section 211 and the second section 212 along the width direction of the panel. This embodiment is the best choice. Compared with the prior art, the structural ribs in the panel 2 are all arranged at the upper part and are linear. In conjunction with the above-mentioned panel surface reinforcement ribs 33, placing the mounting seat 301 at the upper part of the panel 2 can increase the bending resistance of the lifting plate during demoulding, transportation and hoisting. The extension of the panel structural ribs 21 to the lower part of the plate can increase the bending resistance of the bottom of the plate during normal use after the cast-in-place layer 4 is cast.

[0092] Similar to panel 2, rib beam 1 also has structural ribs. Figure 5 , Figure 6 and Figure 8 At least a steel cage 11, prestressed tendons 12 and embedded sleeves 13 are arranged in the rib beam 1. Further, the steel cage 11 includes top tendons 112, bottom tendons 111 and stirrups 113; the prestressed tendons 12 are arranged between the bottom tendons 111 and the top tendons 112 along the beam length direction of the rib beam 1; the embedded sleeve 13 is embedded in the end of the rib beam 1 and is located between the bottom tendons 111 and the top tendons 112, and an additional shearing tendon 131 is installed in the embedded sleeve 13. Further, one end of the embedded sleeve 13 is embedded in the rib beam 1 through the embedded shearing tendons 132, and the other end is exposed to form an installation end for the additional shearing tendons 13, forming a three-section structure as a whole.

[0093] It should be noted that this embodiment is implemented in a scenario where a single T-plate of a concrete rib beam is arranged on a frame beam 5. Two single T-plates of concrete rib beams are hoisted on the frame beam 5, and the frame beam 5 can be implemented as a composite beam, that is, the single T-plate of the concrete rib beam is hoisted on the prefabricated part of the frame beam 5. A post-cast space is formed between the two, which is also the post-cast part of the frame beam 5. The rib beam of the single T-plate of the concrete rib beam forms a secondary beam through the post-cast space. Therefore, a threaded additional shear reinforcement can be screwed into the embedded sleeve 13 to form a shear effect. Compared with the prior art, the embedded sleeve 13 in the composite beam is randomly placed or set in the upper composite layer of the beam with the largest bending moment, so that the additional shear reinforcement at the maximum bending moment is tensile, and the anchoring of the additional shear reinforcement under tension and the concrete has the risk of slippage, which is unsafe for shear deviation. In this embodiment, the embedded sleeve 13 can be set at a position in the middle of the beam close to the rib beam 1, so that the position can be set in the middle of the beam or below the secondary beam.

[0094] Furthermore, in order to improve the rigidity of the post-cast part of the composite beam, the bottom reinforcements 111 and 111, the top reinforcements 112 and 112, and the additional shear reinforcements 131 and 131 can be staggered left and right, or up and down, relative to the rib beam 1 erected on the composite beam. Therefore, when prefabricating the concrete rib beam single T-slab, the positions of the structural reinforcements at both ends of the concrete rib beam single T-slab can be designed in two ways, that is, the structural reinforcements at both ends of the rib beam 1 can be designed with different reinforcement positions to meet this situation. For details, please refer to Figure 5 , Figure 5 This is a structural effect display diagram, which compares two different reinforcement methods at both ends of the rib beam 1. The red mark indicates the reinforcement position at one end of the rib beam 1, including the bottom reinforcement 111a, the top reinforcement 112a and the embedded sleeve 13a; in contrast, the bottom reinforcement 111b, the top reinforcement 112b and the embedded sleeve 13b indicate the reinforcement position at the other end of the rib beam 1.

[0095] Furthermore, the prestressed tendons 12 are intended to strengthen the rigidity of the rib beam 1 , and thus in this embodiment can be implemented as a non-reinforced structure, that is, the concrete rib beam single T-plate is cast and formed and then cut off at the end.

[0096] As a preferred implementation of this embodiment, the structural reinforcements arranged from bottom to top in the rib beam 1 are bottom reinforcement 111, prestressed reinforcement 12, additional shear reinforcement 131 and top reinforcement 112. Among them, the bottom reinforcement 111 and the top reinforcement 112 are ordinary steel bars, which are protruded and avoid the left and right sides of the bottom reinforcement 111 of the rib beam 1 at the relative position up and down; that is, the protrusion positions of the bottom reinforcement 111 at both ends of the rib beam 1 are mutually displaced (the two ends are the bottom reinforcement 111a and the top reinforcement 112b), so the two concrete rib beam single T plates at the relative position on the frame beam 5 are opposite to each other, so that the dislocation of the reinforcement is achieved. Similarly, the additional short shear reinforcement passes through the embedded sleeve 13, the reinforcement is protruded and screwed into the installation after the hoisting plate, and avoids the left and right sides of the bottom reinforcement 111 of the rib beam 1 at the relative position up and down; the prestressed reinforcement 12 is not protruded, that is, it is cut after tensioning.

[0097] Beneficial effects of this embodiment: Through the flexible application of the connecting component 3, the present application can realize a large-span flat plate structure as a support-free bottom plate of the composite floor, thereby reducing the number of components to be hoisted and improving the hoisting efficiency; reducing the number of rib beams 1, thereby reducing the sense of architectural oppression caused by dense ribs and improving the aesthetics of the building; and also realizing a combination of different plate widths to achieve flexibility in layout.

[0098] Adjacent single T-boards can be joined together through the connecting components 3 to achieve close joining, or to form joints 20 for post-casting, which has strong adaptability.

[0099] The rib beam 1 is a complete beam structure. The internal steel cage 11, prestressed tendons 12 and embedded sleeves 13 improve the structure of the rib beam 1 while forming a post-cast space on the frame beam 5. The various reinforcements are staggered to achieve safety and convenience in installation.

[0100] Compared with the existing composite beam-slab, the additional shear reinforcement 131 can be arranged in the middle of the rib beam 1, so that the additional shear reinforcement 131 will not fall off due to pull-out as in the traditional technology, thereby improving the shear resistance.

[0101] Component standardization can realize component productization and save costs.

[0102] Method Example 1: Please combine Figure 1 to Figure 8 , this embodiment provides a construction method of a concrete rib beam single T-plate group, which mainly includes two main steps.

[0103] S1: Precast concrete ribbed beam single T-slab.

[0104] Specifically, in the integrally cast panel 2 and the rib beam 1 , a plurality of connecting components 3 are respectively provided on the panel 2 at least near two side edges, and panel surface reinforcing ribs 33 are provided between the connecting components 3 along the panel width direction of the panel 2 .

[0105] Furthermore, the reinforcement of the concrete rib beam single T-slab is arranged in the T-shaped casting mold, including the reinforcement of the rib beam 1 and the reinforcement of the panel 2.

[0106] The panel structural ribs 21 are arranged to extend in the direction of the width of the panel, from a position close to the top surface of the panel 2 to a position close to the bottom surface of the panel 2; or, the panel structural ribs 21 are divided into a first section 211 close to the top surface of the panel 2, a second section 212 close to the bottom surface or the middle position of the panel 2, and a connecting section 213 connecting the first section 211 and the second section 212 along the width of the panel. This implementation is the best choice in this embodiment. Compared with the prior art, the structural ribs in the panel 2 are all arranged in a straight line at the upper part. In conjunction with the above-mentioned panel surface reinforcement ribs 33, placing the mounting seat 301 at the upper part of the panel 2 can increase the bending resistance of the lifting panel during demoulding, transportation and hoisting. The extension of the panel structural ribs 21 to the lower part of the panel can increase the bending resistance of the bottom of the panel during normal use after the cast-in-place layer 4 is cast.

[0107] Further, when the concrete rib beam single T-slab is used as the composite bottom plate of the floor, a plurality of shear keys 14 are provided on the rib beam 1 along the beam length direction, and the shear keys 14 extend above the panel 2. Specifically, the shear keys 14 are shear bars, which can be welded to the internal structural bars of the rib beam 1.

[0108] Similarly to the panel 2, the rib beam 1 is also provided with structural reinforcements. Specifically, at least a steel cage 11, prestressed reinforcements 12 and embedded sleeves 13 are arranged in the rib beam 1. Further, the steel cage 11 includes top reinforcements 112, bottom reinforcements 111 and stirrups 113; the prestressed reinforcements 12 are arranged between the bottom reinforcements 111 and the top reinforcements 112 along the beam length direction of the rib beam 1; the embedded sleeves 13 are embedded in the end of the rib beam 1 and are located between the bottom reinforcements 111 and the top reinforcements 112, and additional shear reinforcements 131 are installed in the embedded sleeves 13. Further, one end of the embedded sleeve 13 is embedded in the rib beam 1 through the embedded shear reinforcements 132, and the other end is exposed to form an installation end for the additional shear reinforcements 13, forming a three-section structure as a whole. Preferably, when laying reinforcements, the embedded sleeves 13 can be welded to the steel cage 11 (stirrups 113) and fixed, and the prestressed reinforcements 12 are tensioned by tensioning equipment.

[0109] It should be noted that this embodiment is implemented in a scenario where a single T-plate of a concrete rib beam is arranged on a frame beam 5. Two single T-plates of concrete rib beams are hoisted on the frame beam 5, and the frame beam 5 can be implemented as a composite beam, that is, the single T-plate of the concrete rib beam is hoisted on the prefabricated part of the frame beam 5. A post-cast space is formed between the two, which is also the post-cast part of the frame beam 5. The rib beam of the single T-plate of the concrete rib beam forms a secondary beam through the post-cast space. Therefore, a threaded additional shear reinforcement can be screwed into the embedded sleeve 13 to form a shear effect. Compared with the prior art, the embedded sleeve 13 in the composite beam is randomly placed or set in the upper composite layer of the beam with the largest bending moment, so that the additional shear reinforcement at the maximum bending moment is tensile, and the anchoring of the additional shear reinforcement under tension and the concrete has the risk of slippage, which is unsafe for shear deviation. In this embodiment, the embedded sleeve 13 can be set at a position in the middle of the beam close to the rib beam 1, so that the position can be set in the middle of the beam or below the secondary beam.

[0110] Furthermore, in order to improve the rigidity of the post-cast part of the composite beam, the bottom reinforcements 111 and 111, the top reinforcements 112 and 112, and the additional shear reinforcements 131 and 131 can be staggered left and right, or up and down, relative to the rib beam 1 erected on the composite beam. Therefore, when prefabricating the concrete rib beam single T-slab, the positions of the structural reinforcements at both ends of the concrete rib beam single T-slab can be designed in two ways, that is, the structural reinforcements at both ends of the rib beam 1 can be designed in different positions to meet this situation. For details, please refer to Figure 5 , Figure 5 A structural effect display diagram compares two different reinforcement methods at both ends of the rib beam 1, wherein the red mark indicates the reinforcement position at one end of the rib beam 1, including the bottom reinforcement 111a, the top reinforcement 112a and the embedded sleeve 13a; in contrast, the bottom reinforcement 111b, the top reinforcement 112b and the embedded sleeve 13b indicate the reinforcement position at the other end of the rib beam 1.

[0111] Furthermore, the prestressed tendons 12 are intended to strengthen the rigidity of the rib beam 1 , and thus in this embodiment can be implemented as a non-reinforced structure, that is, the concrete rib beam single T-plate is cast and formed and then cut off at the end.

[0112] As a preferred implementation of this embodiment, the structural reinforcements arranged from bottom to top in the rib beam 1 are bottom reinforcement 111, prestressed reinforcement 12, additional shear reinforcement 131 and top reinforcement 112. Among them, the bottom reinforcement 111 and top reinforcement 112 are ordinary steel bars, which are exposed and avoid the bottom reinforcement 111 of the rib beam 1 at the relative position on both sides, up and down; the prestressed reinforcement 12 is not exposed, that is, it is cut off after tensioning; the additional short shear reinforcement passes through the embedded sleeve 13, is exposed and screwed into the installation after the hoisting plate, and avoids the bottom reinforcement 111 of the rib beam 1 at the relative position on both sides, up and down.

[0113] S2: Install the concrete rib beam single T plate group.

[0114] Specifically, the concrete rib beam single T-plate is hoisted onto the main structure, and after the plate surface reinforcement ribs 33 are removed, the connecting components 3 are connected between the adjacent concrete rib beam single T-plates on the side of the panel 2 through the connecting pieces 34 .

[0115] Taking the composite frame beam 5 as the main structure, a row of concrete rib beam single T-plates are set on both sides of the frame beam 5, and each row of adjacent concrete rib beam single T-plates are connected by connecting pieces 34 and connecting components 3, and the connecting method is close connection or leaving a certain post-casting joint 20. Further, after the concrete rib beam single T-plate is hoisted in place, the board surface reinforcement ribs 33 can be removed, and the board edge connecting components 31 between adjacent concrete rib beam single T-plates are connected by connecting pieces 34.

[0116] The adjacent concrete rib beam single T-slabs can be closely joined or have a certain joint 20, and can be poured later on a temporary formwork (temporary formwork 6) (cast together with the floor slab).

[0117] Beneficial effects of this embodiment: In this embodiment, the concrete rib beam single T-plate can be mass-produced. Through practice, at least two beam widths (mm) of 200 and 250 and multiple combination structures of plate widths (mm) of 1500 / 1800 / 2100 / 2400 / 2700 can be realized; therefore, the large-span concrete rib beam single T-plate can reduce the number of hoisting times and the number of components, thereby improving construction efficiency.

[0118] After hoisting the concrete rib beam single T-slab, the slab surface reinforcement rib 33 can be removed, and the slab edge connection assembly 31 can be connected to the adjacent single T-slab to form an integral structure. The connection assembly 3 itself can also become a shear-resistant member of the cast-in-place layer 4, and can also be used as a reinforcement saddle for the structural reinforcement of the cast-in-place layer 4.

[0119] An anti-cracking steel bar 41 is arranged above the opposite concrete rib beam single T-slab to cross the post-casting space of the frame beam 5 to prevent the cast-in-place layer 4 from cracking.

[0120] Method Example 2: Please combine Figure 1 to Figure 8 This embodiment provides a construction method for a composite beam-slab structure, which mainly includes three steps: Step 1: Prefabricated concrete rib beam single T-slab.

[0121] Specifically, in the integrally cast panel 2 and the rib beam 1 , a plurality of connecting components 3 are respectively provided on the panel 2 at least near two side edges, and panel surface reinforcing ribs 33 are provided between the connecting components 3 along the panel width direction of the panel 2 .

[0122] Furthermore, the reinforcement of the concrete rib beam single T-slab is arranged in the T-shaped casting mold, including the reinforcement of the rib beam 1 and the reinforcement of the panel 2.

[0123] The panel structural ribs 21 are arranged to extend in the direction of the width of the panel, from a position close to the top surface of the panel 2 to a position close to the bottom surface of the panel 2; or, the panel structural ribs 21 are divided into a first section 211 close to the top surface of the panel 2, a second section 212 close to the bottom surface or the middle position of the panel 2, and a connecting section 213 connecting the first section 211 and the second section 212 along the width of the panel. This implementation is the best choice in this embodiment. Compared with the prior art, the structural ribs in the panel 2 are all arranged in a straight line at the upper part. In conjunction with the above-mentioned panel surface reinforcement ribs 33, placing the mounting seat 301 at the upper part of the panel 2 can increase the bending resistance of the lifting panel during demoulding, transportation and hoisting. The extension of the panel structural ribs 21 to the lower part of the panel can increase the bending resistance of the bottom of the panel during normal use after the cast-in-place layer 4 is cast.

[0124] Further, when the concrete rib beam single T-slab is used as the composite bottom plate of the floor, a plurality of shear keys 14 are provided on the rib beam 1 along the beam length direction, and the shear keys 14 extend above the panel 2. Specifically, the shear keys 14 are shear bars, which can be welded to the internal structural bars of the rib beam 1.

[0125] Similarly to the panel 2, the rib beam 1 is also provided with structural reinforcements. Specifically, at least a steel cage 11, prestressed reinforcements 12 and embedded sleeves 13 are arranged in the rib beam 1. Further, the steel cage 11 includes top reinforcements 112, bottom reinforcements 111 and stirrups 113; the prestressed reinforcements 12 are arranged between the bottom reinforcements 111 and the top reinforcements 112 along the beam length direction of the rib beam 1; the embedded sleeves 13 are embedded in the end of the rib beam 1 and are located between the bottom reinforcements 111 and the top reinforcements 112, and additional shear reinforcements 131 are installed in the embedded sleeves 13. Further, one end of the embedded sleeve 13 is embedded in the rib beam 1 through the embedded shear reinforcements 132, and the other end is exposed to form an installation end for the additional shear reinforcements 13, forming a three-section structure as a whole. Preferably, when laying reinforcements, the embedded sleeves 13 can be welded to the steel cage 11 (stirrups 113) and fixed, and the prestressed reinforcements 12 are tensioned by tensioning equipment.

[0126] It should be noted that this embodiment is implemented in a scenario where a single T-plate of a concrete rib beam is arranged on a frame beam 5. Two single T-plates of concrete rib beams are hoisted on the frame beam 5, and the frame beam 5 can be implemented as a composite beam, that is, the single T-plate of the concrete rib beam is hoisted on the prefabricated part of the frame beam 5. A post-cast space is formed between the two, which is also the post-cast part of the frame beam 5. The rib beam of the single T-plate of the concrete rib beam forms a secondary beam through the post-cast space. Therefore, a threaded additional shear reinforcement can be screwed into the embedded sleeve 13 to form a shear effect. Compared with the prior art, the embedded sleeve 13 in the composite beam is randomly placed or set in the upper composite layer of the beam with the largest bending moment, so that the additional shear reinforcement at the maximum bending moment is tensile, and the anchoring of the additional shear reinforcement under tension and the concrete has the risk of slippage, which is unsafe for shear deviation. In this embodiment, the embedded sleeve 13 can be set at a position in the middle of the beam close to the rib beam 1, so that the position can be set in the middle of the beam or below the secondary beam.

[0127] Furthermore, in order to improve the rigidity of the post-cast part of the composite beam, the bottom reinforcements 111 and 111, the top reinforcements 112 and 112, and the additional shear reinforcements 131 and 131 can be staggered left and right, or up and down, relative to the rib beam 1 erected on the composite beam. Therefore, when prefabricating the concrete rib beam single T-slab, the positions of the structural reinforcements at both ends of the concrete rib beam single T-slab can be designed in two ways, that is, the structural reinforcements at both ends of the rib beam 1 can be designed in different positions to meet this situation. For details, please refer to Figure 5 , Figure 5 A structural effect display diagram compares two different reinforcement methods at both ends of the rib beam 1, wherein the red mark indicates the reinforcement position at one end of the rib beam 1, including the bottom reinforcement 111a, the top reinforcement 112a and the embedded sleeve 13a; in contrast, the bottom reinforcement 111b, the top reinforcement 112b and the embedded sleeve 13b indicate the reinforcement position at the other end of the rib beam 1.

[0128] Furthermore, the prestressed tendons 12 are intended to strengthen the rigidity of the rib beam 1 , and thus in this embodiment can be implemented as a non-reinforced structure, that is, the concrete rib beam single T-plate is cast and formed and then cut off at the end.

[0129] As a preferred implementation of this embodiment, the structural reinforcements arranged from bottom to top in the rib beam 1 are bottom reinforcement 111, prestressed reinforcement 12, additional shear reinforcement 131 and top reinforcement 112. Among them, the bottom reinforcement 111 and top reinforcement 112 are ordinary steel bars, which are exposed and avoid the bottom reinforcement 111 of the rib beam 1 at the relative position on both sides, up and down; the prestressed reinforcement 12 is not exposed, that is, it is cut off after tensioning; the additional short shear reinforcement passes through the embedded sleeve 13, is exposed and screwed into the installation after the hoisting plate, and avoids the bottom reinforcement 111 of the rib beam 1 at the relative position on both sides, up and down.

[0130] Step 2: Install the concrete rib beam single T plate group.

[0131] Specifically, the concrete rib beam single T-plate is hoisted onto the main structure, and after the plate surface reinforcement ribs 33 are removed, the connecting components 3 are connected between the adjacent concrete rib beam single T-plates on the side of the panel 2 through the connecting pieces 34 .

[0132] Taking the composite frame beam 5 as the main structure, a row of concrete rib beam single T-plates are set on both sides of the frame beam 5, and each row of adjacent concrete rib beam single T-plates are connected by connecting pieces 34 and connecting components 3, and the connecting method is close connection or leaving a certain post-casting joint 20. Further, after the concrete rib beam single T-plate is hoisted in place, the board surface reinforcement ribs 33 can be removed, and the board edge connecting components 31 between adjacent concrete rib beam single T-plates are connected by connecting pieces 34.

[0133] The adjacent concrete rib beam single T-slabs can be closely joined or have a certain joint 20, and can be poured later on a temporary formwork (temporary formwork 6) (cast together with the floor slab).

[0134] Step 3: Pour cast-in-place layer 4.

[0135] Specifically, the cast-in-place layer 4 is cast on the concrete rib beam single T-plate group. It includes the reinforcement of the cast-in-place layer 4, laying the structural reinforcement (including longitudinal and transverse reinforcement) of the cast-in-place layer 4 on the panel 2, using the mounting seat 301 as a horse stool to form a protective layer between the panel 2.

[0136] It should be noted that when adjacent concrete rib beam single T-slabs form a certain joint 20, a temporary formwork 6 should be supported below the joint 20. When a cast-in-place portion of a composite frame beam 5 is formed between opposite concrete rib beam single T-slabs, it should be cast and filled together when the cast-in-place floor slab layer 4 is cast; and anti-cracking steel bars 41 should be set on the face plates 2 of the opposite concrete rib beam single T-slabs.

[0137] Beneficial effects of this embodiment: In this embodiment, the concrete rib beam single T-plate can be mass-produced. Through practice, at least two beam widths (mm) of 200 and 250 and multiple combination structures of plate widths (mm) of 1500 / 1800 / 2100 / 2400 / 2700 can be realized; therefore, the large-span concrete rib beam single T-plate can reduce the number of hoisting times and the number of components, thereby improving construction efficiency.

[0138] After hoisting the concrete rib beam single T-slab, the slab surface reinforcement rib 33 can be removed, and the slab edge connection assembly 31 can be connected to the adjacent single T-slab to form an integral structure. The connection assembly 3 itself can also become a shear-resistant member of the cast-in-place layer 4, and can also be used as a reinforcement saddle for the structural reinforcement of the cast-in-place layer 4.

[0139] An anti-cracking steel bar 41 is arranged above the opposite concrete rib beam single T-slab to cross the post-casting space of the frame beam 5 to prevent the cast-in-place layer 4 from cracking.

[0140] Application examples: This embodiment provides an application of a concrete rib beam single T-plate. Specifically, the concrete rib beam single T-plate is applied to floor slabs, floor slabs and exterior wall panels. The structure of the concrete rib beam single T-plate has been described in detail in Structural Embodiment 1, and will not be repeated here.

[0141] Specifically, a waterproof layer can be laid between the panels 2 to be used as a floor slab; a cast-in-place floor layer 4 can be poured on the panel 2 to form a composite floor slab; a single T-plate with a concrete rib beam can be vertically arranged between the frame columns to form an exterior wall panel of a single-layer assembly system, and an insulation layer can be arranged outside the panel 2.

[0142] Furthermore, the present invention is described in detail above in conjunction with the embodiments of the accompanying drawings, and a person skilled in the art can make various variations of the present invention according to the above description. Therefore, certain details in the embodiments should not constitute a limitation of the present invention, and the present invention shall be protected by the scope defined by the attached claims.

Claims

1. A concrete rib beam single T-slab, comprising a rib beam and a panel, characterized in that: The panel is provided with a plurality of docking components at least near two side edges, and the docking components are implemented as at least one of the following: Arrange panel surface reinforcement ribs between the connecting components along the panel width direction; A connecting piece for connecting adjacent concrete rib beam single T-plates is arranged on the connecting assembly.

2. The concrete rib beam single T-slab according to claim 1, characterized in that: A plurality of connection components are defined as a panel edge connection component close to the side of the panel and a panel mid-connection component located at the center line of the panel; the panel surface reinforcement ribs are installed on the panel edge connection components and the panel mid-connection components; and connection parts for connecting adjacent concrete rib beam single T-plates are arranged on the panel edge connection components.

3. The concrete rib beam single T-slab according to claim 1, characterized in that: The docking assembly includes a mounting seat and a mounting bolt. The mounting seat is fixed to the panel, and a mounting hole for threaded installation of the mounting bolt is provided on the mounting seat.

4. The concrete rib beam single T-slab according to claim 1, characterized in that: The panel is provided with a plurality of panel structural ribs; The panel structural ribs are arranged to extend in the panel width direction from a position close to the top surface of the panel to a position close to the bottom surface of the panel; or, the panel structural ribs are divided along the panel width direction into a first section close to the top surface of the panel, a second section close to the bottom surface or the middle position of the panel, and a connecting section connecting the first section and the second section.

5. The concrete rib beam single T-slab according to claim 1, characterized in that: The rib beam is provided with at least: A steel cage, wherein the steel cage comprises top reinforcement, bottom reinforcement and stirrups; Prestressed tendons, the prestressed tendons are arranged between the bottom tendons and the top tendons along the beam length direction of the rib beam; The embedded sleeve is embedded in the end of the rib beam and located between the bottom reinforcement and the top reinforcement, and additional shear reinforcement is installed in the embedded sleeve.

6. The concrete rib beam single T-slab according to claim 1, characterized in that: A plurality of shearing keys are arranged on the rib beam along the length direction of the beam, and the shearing keys extend above the panel.

7. Concrete rib beam single T plate group, characterized in that: It comprises a plurality of concrete rib beam single T-plates as described in claims 1 to 6; the connecting components between the concrete rib beam single T-plates adjacent to the side of the panel are connected through the connecting parts; the concrete rib beam single T-plates opposite to the ends of the rib beams are erected on the main structure to form a post-casting space.

8. The concrete rib beam single T-plate assembly according to claim 7, characterized in that: The rib beam is provided with at least: A steel cage, wherein the steel cage comprises top reinforcement, bottom reinforcement and stirrups; Prestressed tendons, the prestressed tendons are arranged between the bottom tendons and the top tendons along the beam length direction of the rib beam; An embedded sleeve, which is embedded in the end of the rib beam and located between the bottom reinforcement and the top reinforcement, and an additional shear reinforcement is installed in the embedded sleeve; The bottom reinforcement, the top reinforcement and the embedded sleeve between the concrete rib beam single T-plates opposite to the ends of the rib beam are arranged in a staggered manner.

9. The concrete rib beam single T-plate assembly according to claim 8, characterized in that: The prestressed tendons are implemented as a non-reinforced tendon structure.

10. A composite beam-slab structure, characterized in that: It comprises the concrete rib beam single T-slab group as described in any one of claims 7 to 9, and a cast-in-place layer is cast on the concrete rib beam single T-slab group.

11. The construction method of the concrete rib beam single T-slab group according to claim 7, characterized in that: The following steps are involved: Precast concrete ribbed single T-slab, with the panel and ribbed beam cast in one piece, a plurality of connecting components are respectively provided on the panel at least near the two sides, and panel surface reinforcement ribs are provided between the connecting components along the panel width direction; Install the concrete rib beam single T-plate group, hoist the concrete rib beam single T-plate to the main structure, remove the plate surface reinforcement ribs, and then connect the connecting components between the concrete rib beam single T-plates adjacent to the side of the panel through the connecting piece.

12. The construction method of the concrete rib beam single T-slab group according to claim 11, characterized in that: When a single T-slab with a precast concrete rib beam is used, a plurality of connection components are defined as a board edge connection component close to the side of the panel and a board middle connection component located at the center line of the panel, and the panel surface reinforcement rib is installed on the board edge connection component and the board middle connection component; When installing the concrete rib beam single T-plate group, the plate edge connecting components corresponding to the partial positions of the adjacent concrete rib beam single T-plates are connected through connecting parts, and then the plate surface reinforcement ribs are removed, and then the plate edge connecting components of the removed plate surface reinforcement ribs are connected to the connecting components of the adjacent concrete rib beam single T-plates through connecting parts.

13. The construction method of the composite beam-slab structure according to claim 10, characterized in that: The following steps are involved: Precast concrete ribbed single T-slab, with the panel and ribbed beam cast in one piece, a plurality of connecting components are respectively provided on the panel at least near the two sides, and panel surface reinforcement ribs are provided between the connecting components along the panel width direction; Install the concrete rib beam single T-plate group, hoist the concrete rib beam single T-plate to the main structure, remove the plate surface reinforcement ribs, and connect the connecting components between the adjacent concrete rib beam single T-plates on the side of the panel through the connecting piece; Pour the cast-in-place layer on the concrete rib beam single T-slab group.

14. The construction method of the composite beam-slab structure according to claim 13, characterized in that: The concrete rib beam single T-plates adjacent to the side of the panel are closely spliced, or post-cast joints are formed.

15. An application of the concrete rib beam single T-slab as claimed in claims 1 to 6, characterized in that: The concrete rib beam single T-slab is applied to floor slabs, floor slabs and exterior wall panels.

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