A method and product for connecting prefabricated T beams and prefabricated U beams

Abstract

The present invention belongs to the field of building node connection design, and specifically discloses a connection method and product of a prefabricated T-beam and a prefabricated U-beam. The method comprises making a prefabricated U-beam, making a prefabricated T-beam, hoisting the made prefabricated T-beam on the corbel of the prefabricated U-beam, pouring concrete between the end plate and the side plate and the two side plates until the concrete reaches the finished surface of the structure. The product comprises a prefabricated U-beam, a prefabricated T-beam evenly and symmetrically arranged on both sides of the prefabricated U-beam, and a support plate structure fixedly arranged on the prefabricated U-beam and the prefabricated T-beam, the prefabricated U-beam comprises a bottom plate, a corbel and a side plate, the prefabricated T-beam comprises a T-beam body and an end plate, and the side plate and the end plate and the two side plates are filled with concrete. The present invention organically combines the prefabricated T-beam and the prefabricated U-beam, two different types of beams. The prefabrication process can effectively shorten the production and construction period, and at the same time can effectively improve the overall quality and reduce unnecessary energy consumption.

Description

Technical Field

[0001] The invention belongs to the field of building node connection design, and more specifically, relates to a connection method and a product of a prefabricated T-beam and a prefabricated U-beam. Background Art

[0002] Prefabricated components are widely used in current projects, which have the characteristics of significantly shortening work, saving materials and high quality.

[0003] At present, common prefabricated components are usually interconnected between structures of the same type. The sleeve grouting method is often used to treat the connection between two prefabricated components. There are relatively few connection treatments between components of different cross-sectional sizes, or it is difficult to construct using technical methods. Summary of the invention

[0004] In view of the above defects or improvement needs of the prior art, the present invention provides a method and product for connecting prefabricated T beams and prefabricated U beams, wherein the characteristics of the prefabricated beams are combined, and the structures and specific settings of the key components such as prefabricated U beams, prefabricated T beams, embedded steel bars and support plate structures are studied and designed, so that the prefabricated T beams and prefabricated U beams, two different types of beams, are organically combined. The prefabricated process can effectively shorten the production and construction cycle, and at the same time, it can also effectively improve the overall quality and reduce unnecessary energy consumption. The design of the corbel on the prefabricated U beam and the design of the concrete end plate on the prefabricated T beam can effectively solve the practical problems of on-site later hoisting and on-site concrete pouring. Furthermore, both ends of each prefabricated T beam are connected to the prefabricated U beam, so that a plane frame constructed by the prefabricated T beam and the prefabricated U beam is formed. Since the prefabricated U beam and the prefabricated T beam are both prefabricated structures, the prefabricated process can effectively shorten the production and construction cycle, and at the same time, it can also effectively improve the overall quality and reduce unnecessary energy consumption.

[0005] To achieve the above object, according to one aspect of the present invention, a method for connecting a prefabricated T beam and a prefabricated U beam is provided, comprising the following steps:

[0006] S1 manufactures a prefabricated U-beam. During the manufacturing process, a first embedded steel bar, a second embedded steel bar and a fourth embedded steel bar are embedded, wherein the bottom end of the first embedded steel bar is embedded in the bottom plate and the side plate, and the hook portion at the top extends out of the top surface of the side plate to a specified height; the bottom end of the second embedded steel bar is embedded in the corbel of the prefabricated U-beam, and the hook portion at the top extends out of the top surface of the corbel to a specified height; one end of the fourth embedded steel bar is embedded in the side plate, and the other end passes through the inner wall of the side plate and extends upward to a specified height;

[0007] S2 manufactures a prefabricated T-beam. During the manufacturing process, a third embedded steel bar is embedded. One end of the third embedded steel bar is embedded in the beam body of the prefabricated T-beam, and the other end passes through the end plate of the prefabricated T-beam and extends outward by a specified length.

[0008] S3: hoisting the prefabricated T-beam produced in step S2 onto the corbel of the prefabricated U-beam produced in step S1, wherein the end plate of the prefabricated T-beam is parallel to the side plate, the third embedded steel bar passes through the second embedded steel bar, and the third embedded steel bar is arranged perpendicular to the second embedded steel bar;

[0009] S4 repeats step S3 until the prefabricated T beams are evenly and symmetrically arranged on the corbels of the prefabricated U beams;

[0010] S5 pours concrete between the end plate and the side plate and between the two side plates. After the concrete covers the precast T-beam, continue pouring concrete until the concrete reaches the finished surface of the structure to form a support plate structure on the precast U-beam and the precast T-beam. Stop pouring concrete and cure the concrete until it reaches the designed strength. At this time, the precast U-beam, precast T-beam and the support plate structure are organically connected together.

[0011] As a further preferred embodiment, in step S1, when making the inner mold of the prefabricated U-beam, it is also necessary to retain an oblique angle of 45° on the inner side of each side plate of the prefabricated U-beam.

[0012] As a further preferred embodiment, in step S1, after the prefabricated U-beam is manufactured, the second embedded steel bars are tied and installed according to the design requirements so that the second embedded steel bars form a continuous plane structure, and then the installation position of the prefabricated T-beam is located on the base plate.

[0013] As a further preferred embodiment, in step S2, when manufacturing the end plate of the prefabricated T-beam, a mold with concave and convex grooves is used to manufacture the end plate, so that the outer side surface of the end plate has concave and convex grooves.

[0014] As a further preference, in step S3, before hoisting the prefabricated T-beam, a rubber sheet needs to be installed on the corbel, and the installation position of the rubber sheet is adapted to the installation position of the end plate hoisted on the corbel, so that when the end plate is hoisted on the corbel, the bottom end of the end plate can fall on the rubber sheet.

[0015] According to another aspect of the present invention, there is also provided a product formed by connecting a prefabricated T beam and a prefabricated U beam, comprising a prefabricated U beam, prefabricated T beams evenly and symmetrically arranged on both sides of the prefabricated U beam, and a support plate structure fixedly arranged on the prefabricated U beam and the prefabricated T beam, wherein:

[0016] The prefabricated U-beam comprises a bottom plate, a corbel arranged at both ends of the bottom plate, and a side plate arranged at both ends of the bottom plate and perpendicular to the bottom plate, the prefabricated U-beam further comprises a first embedded steel bar, a second embedded steel bar and a fourth embedded steel bar, the bottom end of the first embedded steel bar is embedded in the bottom plate and the side plate, and the hook portion at the top extends out of the top surface of the side plate to a specified height, the bottom end of the second embedded steel bar is embedded in the corbel, and the hook portion at the top extends out of the top surface of the corbel to a specified height, one end of the fourth embedded steel bar is embedded in the side plate, and the other end passes through the inner wall of the side plate and extends upward to a specified height;

[0017] The prefabricated T-beam is fixedly hoisted on the corbel, and comprises a T-beam body and an end plate, wherein the T-beam body is vertically arranged with the end plate, and the end plate is arranged in parallel with the side plate, and the prefabricated T-beam further comprises a third embedded steel bar, one end of which is arranged inside the T-beam body, and the other end passes through the end plate and the second embedded steel bar, and the third embedded steel bar is vertically arranged with the second embedded steel bar,

[0018] The side plates, the end plates and the two side plates are filled with concrete.

[0019] As a further preference, a bevel is provided on the inner side wall of the connection end between the side plate and the bottom plate, and the bevel is 45°; a bevel is provided on the inner side wall of the connection end between the end plate and the T-beam body, and the bevel is 45°.

[0020] As a further preferred embodiment, binding steel bars are installed on the second embedded steel bars.

[0021] As a further preference, concave and convex grooves are provided on a side surface of the end plate facing the side plate.

[0022] As a further preferred feature, a rubber sheet is fixed between the end plate and the corbel.

[0023] In general, the above technical solution conceived by the present invention has the following technical advantages compared with the prior art:

[0024] 1. The present invention organically combines two different types of beams, prefabricated T-beams and prefabricated U-beams. The prefabrication process can effectively shorten the production and construction period, and at the same time, can effectively improve the overall quality and reduce unnecessary energy consumption. Designing corbels on prefabricated U-beams and concrete end plates on prefabricated T-beams can effectively solve the practical problems of later on-site hoisting and on-site concrete pouring. Furthermore, both ends of each prefabricated T-beam are connected to prefabricated U-beams. In this way, a plane frame constructed by prefabricated T-beams and prefabricated U-beams is formed. Since both prefabricated U-beams and prefabricated T-beams are prefabricated structures, the prefabrication process can effectively shorten the production and construction period, and at the same time, can effectively improve the overall quality and reduce unnecessary energy consumption.

[0025] 2. In the present invention, the bracket 7 of the precast U beam is the key to support the precast T beam 1, and should be fully cured to reach the design strength during precasting. The embedded steel bars provide the basis for the connection of the entire structure, the connection between the precast T beam and the precast U beam in the later stage, and the connection between the cast-in-place concrete layer after the entire precast T beam and the precast U beam. The on-site pouring of concrete allows the two precast concrete structures to be organically connected together, making the entire structure form a whole, firm and reliable.

[0026] 3. In the present invention, the design of the corbel on the precast concrete U-beam and the design of the concrete end plate on the precast T-beam can effectively solve the practical problems of on-site later hoisting and on-site concrete pouring. The present invention connects the nodes by setting different types of embedded steel bars, such as one end of the first embedded steel bar is embedded in the bottom plate and the side plate, and the other end extends to the top surface of the side plate until it extends into the support plate structure, so as to strengthen the fixed connection between the support plate structure and the precast U-beam. At the same time, a plurality of second embedded steel bars are embedded in the corbel, and the plurality of second embedded steel bars are arranged along the axial direction of the corbel. At the same time, the plurality of second embedded steel bars are tied and connected by tying steel bars, so that the plurality of second embedded steel bars are fixedly connected to form a plane structure. Furthermore, one end of the third embedded steel bar is buried inside the T-beam body, and the other end passes through the end plate and the second embedded steel bar at the same time. In this way, the third embedded steel bar and the second embedded steel bar form a frame structure that can transmit force. At the same time, after concrete is poured between the side plate and the end plate, the embedded steel bar provides important support for the overall connection of the entire structure. The on-site pouring of concrete organically connects the two precast concrete structures together, making the entire structure firm and reliable.

[0027] 4. In the present invention, before the prefabricated T-beam is hoisted, a rubber sheet is first installed at the connection surface of the corbel and the end plate, and then the prefabricated T-beam is hoisted on the corbel, wherein the bottom surface of the end plate just falls on the rubber sheet. The rubber sheet is a flexible material, and in order to protect the prefabricated T-beam end plate from damage, a certain displacement is allowed. The installation of the rubber sheet can effectively prevent damage to the prefabricated structure and improve the overall quality.

[0028] 5. In the present invention, a bevel is provided on the inner side wall of the connection end between the side plate and the bottom plate, and the bevel is 45°. The bevel is designed at 45°, which can effectively enhance the shear resistance of the prefabricated U beam. A bevel is provided on the inner side wall of the connection end between the end plate and the T beam body, and the bevel is 45°. The 45° design is adopted in the design of the top of the prefabricated T beam to enhance the shear resistance. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 It is a schematic diagram of a connection structure of a prefabricated T-beam and a prefabricated U-beam involved in an embodiment of the present invention;

[0030] Figure 2It is a schematic cross-sectional structure diagram of a connection structure of a prefabricated T beam and a prefabricated U beam;

[0031] Figure 3 yes Figure 2 Schematic diagram of the structure of the end plate involved.

[0032] In all the drawings, the same figure marks represent the same technical features, specifically: 1-prefabricated T-beam, 2-prefabricated U-beam, 3-end plate, 41-first embedded steel bar, 42-second embedded steel bar, 43-third embedded steel bar, 44-fourth embedded steel bar, 5-rubber sheet, 6-binding steel bar, 7-corbel, 8-side plate, 9-bottom plate, 10-support plate structure. DETAILED DESCRIPTION

[0033] In order to make the purpose, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention. In addition, the technical features involved in the various embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other.

[0034] The present invention is more practical for connecting different types of prefabricated components. The end plates and prefabricated components themselves are used as templates, and the corbels are designed as bearing points. The construction is relatively simple, and the difficulty of hoisting overweight beams is also solved. The beams with different interfaces are used to effectively play the force advantages of different types of beams, so as to achieve the purpose of optimizing design and saving costs. In the present invention, the prefabricated T beam is prefabricated with concrete and steel bars, and is also called prefabricated concrete T beam. The prefabricated U beam is prefabricated with concrete and steel bars, and is also called prefabricated concrete U beam.

[0035] like Figure 1 , Figure 2 as well as Figure 3 As shown, a method for connecting a prefabricated T beam and a prefabricated U beam provided in an embodiment of the present invention comprises the following steps:

[0036] Step 1: Make a prefabricated U-beam 2. During this manufacturing process, a first embedded steel bar 41, a second embedded steel bar 42 and a fourth embedded steel bar 44 are embedded. The bottom end of the first embedded steel bar 41 is embedded in the bottom plate 9 and the side plate 8, and the hook portion at the top extends out of the top surface of the side plate 8 to a specified height. The bottom end of the second embedded steel bar 42 is embedded in the corbel 7, and the hook portion at the top extends out of the top surface of the corbel 7 to a specified height. One end of the fourth embedded steel bar 44 is embedded in the side plate 8, and the other end passes through the inner wall and extends upward to a specified height. More specifically, the structure of the prefabricated U-beam 2 is as follows: Figure 2As shown, it is composed of side panels 8, bottom panels 9 and corbels 7. Prefabricated U-beams are prefabricated using specific molds. When making the prefabricated U-beam 2 in the prefabrication yard, the first embedded steel bars 41, the second embedded steel bars 42 and the fourth embedded steel bars 44 should be pre-installed to prepare for the subsequent on-site construction. At the same time, when manufacturing the inner mold of the prefabricated U-beam, a 45° bevel should be retained on the inner side of the side panels to enhance the shear resistance of the side panels. After the prefabricated U-beam 2 is installed on site, the binding steel bars 6 are installed on site by lifting equipment to form a whole with the second embedded steel bars 42. Note that an installation position is reserved for the third embedded steel bars 43 of the prefabricated T-beam 1. After the prefabricated U-beam 2 is installed on site and the binding steel bars 6 are installed, first locate the installation position of the prefabricated T-beam 1 on the prefabricated U-beam, and install the rubber sheet 5 on the corbel 7 of the prefabricated U-beam to prepare for receiving the prefabricated T-beam 1 later. More specifically, in the present invention, after the prefabricated U beam is prepared, it is necessary to locate the installation position of the prefabricated T beam 1 on the prefabricated U beam, so that when the prefabricated U beam is hoisted onto the load-bearing support, the prefabricated T beam can be directly hoisted and positioned according to the positioning position.

[0037] In this step, in order to prevent the prefabricated beams from wearing each other, a rubber sheet 5 is also installed on the upper surface of the corbel 7. That is, before the prefabricated T-beam is hoisted, the rubber sheet 5 is first installed at the connection surface of the corbel 7 and the end plate 3, and then the prefabricated T-beam is hoisted on the corbel 7, wherein the bottom surface of the end plate 3 just falls on the rubber sheet 5. The rubber sheet 5 is a flexible material, and in order to protect the prefabricated T-beam end plate 3 from damage, a certain displacement is allowed. The installation of the rubber sheet 5 can effectively prevent damage to the prefabricated structure and improve the overall quality. Figure 2 As shown, the bracket of the prefabricated U beam 2 is the key to supporting the prefabricated T beam. Placing the rubber sheet 5 on the bracket is an important component to effectively prevent the prefabricated structure from being damaged, and also provides a certain soft deformation for the prefabricated T beam. The embedded steel bars provide important support for the overall connection of the entire structure, and the on-site pouring of concrete makes the two prefabricated concrete structures organically connected together, making the entire structure firm and reliable.

[0038] Step 2: Prefabricated T-beam is made. During the manufacturing process, the third embedded steel bar 43 is embedded. One end of the third embedded steel bar 43 is embedded in the beam body of the prefabricated T-beam, and the other end passes through the end plate 3 of the prefabricated T-beam and extends outward by a specified length. When prefabricating the T-beam 1, the third embedded steel bar 43 is first tied and the required design length is reserved.

[0039] Step 3: Hoist the prefabricated T-beam on the corbel 7 of the prefabricated U-beam, wherein the end plate 3 of the prefabricated T-beam is parallel to the side plate 8, the third embedded steel bar 43 passes through the second embedded steel bar 42, and the third embedded steel bar 43 is arranged perpendicular to the second embedded steel bar 42. After the prefabricated T-beam 1 is produced in the prefabrication yard, it is hoisted on the corbel 7 of the prefabricated U-beam to ensure that the end plate 3 of the prefabricated T-beam is placed on the rubber sheet 5. After the prefabricated T-beam and the prefabricated U-beam are installed, the position steel bars reserved for the third embedded steel bar 43 of the prefabricated mixed T-beam are reinforced. The top of the prefabricated T-beam and the inside of the prefabricated U-beam are still a certain distance from the finished surface of the structure. All the empty spaces between them must be tied with steel bars, and concrete is poured together after the steel bars are tied. The corbel 7 of the prefabricated U-beam is the key to supporting the prefabricated T-beam 1, and it should be fully maintained during prefabrication to reach the design strength. The embedded steel bars provide the foundation for the connection of the entire structure, the connection between the precast T beams and precast U beams in the later stage, and the connection between the cast-in-place concrete layers after the precast T beams and precast U beams. The cast-in-place concrete makes the two precast concrete structures organically connected together, making the entire structure form a whole, firm and reliable.

[0040] Step 4: Repeat step 3 until the prefabricated T beams are evenly and symmetrically arranged on the brackets 7 of the prefabricated U beams. The prefabricated T beams are evenly and symmetrically arranged on both sides of the prefabricated U beams. At the same time, both ends of each prefabricated T beam are connected to the prefabricated U beams. In this way, a plane frame constructed by the prefabricated T beams and the prefabricated U beams is formed. Since the prefabricated U beams and the prefabricated T beams are both prefabricated structures, the prefabrication process can effectively shorten the production and construction period, and at the same time, it can effectively improve the overall quality and reduce unnecessary energy consumption.

[0041] Step five: pour concrete between the end plate 3 and the side plate 8. After the concrete is above the precast T-beam, continue pouring concrete to form a support plate structure on the precast U-beam and the precast T-beam. When the support plate structure reaches the specified design thickness, stop pouring concrete and cure the concrete until it reaches the design strength. At this time, the precast U-beam, precast T-beam and the support plate structure are organically connected together. This connection method effectively solves the stress condition of the precast T-beam 1 at the end, so that the load borne by the precast U-beam 2 is more evenly distributed on the entire corbel; at the same time, it serves as a template on the side of the precast T-beam for the later pouring of concrete. The third embedded steel bar 43 plays a key role in connecting the precast T-beam 1 and the precast U-beam 2. When tying the steel bars, the third embedded steel bar 43 should be buried inside the second embedded steel bar 42 set at the precast U-beam pre-corbel (such as Figure 2 as shown) to enhance the connection.

[0042] When the prefabricated T-beam of the present invention is manufactured, the prefabricated T-beam is composed of a prefabricated T-beam 1 beam body, a prefabricated T-beam end plate 3 and embedded steel bars 4. When designing the end plate 3, the end plate is designed to be concave and convex to enhance the connection with the concrete during the later casting and reduce the occurrence of other common concrete problems; at the same time, a 45° design is adopted when designing the top of the prefabricated T-beam to enhance the shear resistance. When designing the entire prefabricated T-beam body, it is designed according to a certain angle, and the cross-section is reduced while meeting the load-bearing requirements, thereby reducing the amount of concrete, making it more economical.

[0043] More specifically, when making prefabricated T-beams, square timbers of a specified shape are installed on the inner wall of the mold where the end plate is located, and then concrete is poured into the mold. The poured concrete is cured until it meets the design requirements, and then the mold is removed to obtain an end plate with concave and convex grooves.

[0044] According to another aspect of the invention, a product formed by connecting prefabricated T-beams and prefabricated U-beams is provided, comprising a prefabricated U-beam, prefabricated T-beams evenly and symmetrically arranged on both sides of the prefabricated U-beam, and a support plate structure fixed on the prefabricated U-beam and the prefabricated T-beam.

[0045] In the present invention, the prefabricated U-beam is directly arranged on a load-bearing seat, such as a load-bearing support, and the load-bearing support is arranged at intervals along the axial direction of the prefabricated U-beam. The prefabricated T-beams are evenly and symmetrically arranged on both sides of the prefabricated U-beam. At the same time, both ends of each prefabricated T-beam are connected to the prefabricated U-beam, in this way, a plane frame constructed by the prefabricated T-beam and the prefabricated U-beam is formed. Since the prefabricated U-beam and the prefabricated T-beam are both prefabricated structures, the prefabrication process can effectively shorten the production and construction period, and at the same time, it can also effectively improve the overall quality and reduce unnecessary energy consumption.

[0046] Specifically, Figure 2As shown, in the present invention, the prefabricated U-beam includes a bottom plate 9, a corbel 7 arranged at both ends of the bottom plate 9, and a side plate 8 arranged at both ends of the bottom plate 9 and perpendicular to the bottom plate 9. The prefabricated U-beam also includes a first embedded steel bar 41, a second embedded steel bar 42, and a fourth embedded steel bar 44. The bottom end of the first embedded steel bar 41 is embedded in the bottom plate 9 and the side plate 8, and the bent hook portion at the top extends out of the top surface of the side plate 8 to a specified height. The bottom end of the second embedded steel bar 42 is embedded in the corbel 7, and the bent hook portion at the top extends out of the top surface of the corbel 7 to a specified height. One end of the fourth embedded steel bar is embedded in the side plate 8, and the other end passes through the inner wall of the side plate 8 and extends vertically upward to the upper surface of the support plate structure 10. The prefabricated T-beam is fixedly hoisted on the corbel 7. The prefabricated T-beam includes a T-beam body and an end plate 3. The T-beam body is vertically arranged with the end plate 3. The end plate 3 is arranged in parallel with the side plate 8. The prefabricated T-beam also includes a third embedded steel bar 43. One end of the third embedded steel bar 43 is arranged inside the T-beam body, and the other end passes through the end plate 3 and the second embedded steel bar 42. The third embedded steel bar 43 is vertically arranged with the second embedded steel bar 42. In the present invention, the second embedded steel bar 42 is tied on site with the binding steel bar 6, so that the second embedded steel bar 42 forms a continuous surface structure. Concrete is poured between the side plate 8 and the end plate 3 and between the two side plates 8 of the prefabricated U-beam. The poured concrete is cast and formed integrally with the support plate structure. In the inventive structure, the corbel is designed on the prefabricated U-beam 2, and the concrete end plate is designed on the prefabricated T-beam 1, which can effectively solve the practical problems of later on-site hoisting and on-site concrete pouring. At the same time, the connection node of the present invention is provided with different types of embedded steel bars, such as a first embedded steel bar 41 with one end embedded in the bottom plate 9 and the side plate 8, and the other end extending to the top surface of the side plate 8 until it extends into the support plate structure 10, so as to strengthen the fixed connection between the support plate structure 10 and the prefabricated U beam. At the same time, a plurality of second embedded steel bars 42 are embedded in the corbel 7, and the plurality of second embedded steel bars 42 are arranged along the axial direction of the corbel 7. At the same time, the plurality of second embedded steel bars 42 are tied and connected by tying steel bars 6, so that the plurality of second embedded steel bars 42 are fixedly connected to form a plane structure. Furthermore, one end of the third embedded steel bar 43 is embedded in the T-beam body, and the other end passes through the end plate 3 and the second embedded steel bar 42. In this way, the third embedded steel bar 43 and the second embedded steel bar 42 form a frame structure that can transmit force. At the same time, after concrete is poured between the side plate 8 and the end plate 3, the embedded steel bars provide important support for the overall connection of the entire structure. The on-site pouring of concrete organically connects the two precast concrete structures together, making the entire structure firm and reliable.

[0047] In the present invention, a rubber sheet 5 is fixedly provided between the end plate 3 and the corbel 7. That is, before the prefabricated T-beam is hoisted, the rubber sheet 5 is first installed at the connection surface of the corbel 7 and the end plate 3, and then the prefabricated T-beam is hoisted on the corbel 7, wherein the bottom surface of the end plate 3 just falls on the rubber sheet 5. The rubber sheet 5 is a flexible material, and in order to protect the prefabricated T-beam end plate 3 from damage, a certain displacement is also allowed. The installation of the rubber sheet 5 can effectively prevent the prefabricated structure from being damaged and improve the overall quality.

[0048] As a preferred solution of the present invention, the third embedded steel bar 43 is an L-shaped structure, and the steel bar near one end of the side plate 8 is arranged parallel to the plane where the side plate 8 is located.

[0049] As a preferred embodiment of the present invention, the inner side wall of the connection end of the side plate 8 and the bottom plate 9 is also provided with an angle of 45°. The angle of 45° can effectively enhance the shear resistance of the prefabricated U beam. The inner side wall of the connection end of the end plate 3 and the T beam body is also provided with an angle of 45°. The top of the prefabricated T beam is designed to be 45° to enhance the shear resistance.

[0050] As a preferred solution of the present invention, concave and convex grooves are provided on one side of the end plate 3 facing the side plate 8 .

[0051] It will be easily understood by those skilled in the art that the above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A method for connecting a prefabricated T beam and a prefabricated U beam, characterized in that: The following steps are involved: S1 manufactures a prefabricated U-beam. During the manufacture, a first embedded steel bar (41), a second embedded steel bar (42) and a fourth embedded steel bar (44) are embedded, wherein the bottom end of the first embedded steel bar (41) is embedded in the bottom plate (9) and the side plate (8), and the hook portion at the top extends out of the top surface of the side plate (8) to a specified height; the bottom end of the second embedded steel bar (42) is embedded in the corbel (7) of the prefabricated U-beam, and the hook portion at the top extends out of the top surface of the corbel (7) to a specified height; one end of the fourth embedded steel bar (44) is embedded in the side plate (8), and the other end passes through the inner wall of the side plate (8) and extends upward to a specified height; S2 manufactures a prefabricated T-beam. During the manufacture process, a third embedded steel bar (43) is embedded. One end of the third embedded steel bar (43) is embedded in the beam body of the prefabricated T-beam, and the other end passes through the end plate (3) of the prefabricated T-beam and extends outwards by a specified length; S3: hoisting the prefabricated T-beam produced in step S2 onto the bracket (7) of the prefabricated U-beam produced in step S1, wherein the end plate (3) of the prefabricated T-beam is parallel to the side plate (8), the third embedded steel bar (43) passes through the second embedded steel bar (42), and the third embedded steel bar (43) is arranged perpendicular to the second embedded steel bar (42); S4 repeats step S3 until the prefabricated T beams are evenly and symmetrically arranged on the corbels (7) of the prefabricated U beams; S5: pouring concrete between the end plate (3) and the side plate (8) and the two side plates (8); after the concrete covers the precast T-beam, continuing to pour concrete until the concrete reaches the finished surface of the structure, so as to form a support plate structure on the precast U-beam and the precast T-beam; stopping pouring concrete, and curing the concrete until it reaches the designed strength; at this point, the precast U-beam, the precast T-beam and the support plate structure are organically connected together.

2. The method for connecting a prefabricated T beam and a prefabricated U beam according to claim 1, characterized in that: In step S1, when making the inner mold of the prefabricated U-beam, it is also necessary to retain an oblique angle of 45° on the inner side of the side plate (8) of the prefabricated U-beam.

3. The method for connecting a prefabricated T beam and a prefabricated U beam according to claim 1, characterized in that: In step S1, after the prefabricated U-beam is manufactured, the second embedded steel bars (42) are tied and installed with the tying steel bars (6) according to the design requirements, so that the second embedded steel bars (42) form a continuous plane structure, and then the installation position of the prefabricated T-beam is located on the bottom plate (9).

4. The method for connecting a prefabricated T beam and a prefabricated U beam according to claim 1, characterized in that: In step S2, when manufacturing the end plate (3) of the prefabricated T-beam, a mold with concave and convex tooth grooves is used to manufacture the end plate (3), so that the outer side surface of the end plate (3) has concave and convex tooth grooves.

5. A method for connecting a prefabricated T beam and a prefabricated U beam according to any one of claims 1 to 4, characterized in that: In step S3, before the prefabricated T-beam is hoisted, a rubber sheet is installed on the corbel (7), and the installation position of the rubber sheet is adapted to the installation position of the end plate (3) on the corbel (7), so that when the end plate (3) is hoisted on the corbel (7), the bottom end of the end plate (3) can fall on the rubber sheet.

6. A product formed by connecting prefabricated T beams and prefabricated U beams, characterized in that: It includes a prefabricated U-beam, prefabricated T-beams evenly and symmetrically arranged on both sides of the prefabricated U-beam, and a support plate structure fixed on the prefabricated U-beam and the prefabricated T-beam, wherein: The prefabricated U-beam comprises a bottom plate (9), a corbel (7) provided at both ends of the bottom plate (9), and a side plate (8) provided at both ends of the bottom plate (9) and arranged perpendicularly to the bottom plate (9), the prefabricated U-beam further comprising a first embedded steel bar (41), a second embedded steel bar (42), and a fourth embedded steel bar (44), the bottom end of the first embedded steel bar (41) being embedded in the bottom plate (9) and the side plate (8), and the hook portion at the top extending out of the top surface of the side plate (8) to a specified height, the bottom end of the second embedded steel bar (42) being embedded in the corbel (7), and the hook portion at the top extending out of the top surface of the corbel (7) to a specified height, and one end of the fourth embedded steel bar (44) being embedded in the side plate (8), and the other end passing through the inner wall of the side plate (8) and extending upward to a specified height; The prefabricated T-beam is fixedly hoisted on the corbel (7), the prefabricated T-beam comprising a T-beam body and an end plate (3), the T-beam body and the end plate (3) being arranged perpendicularly, the end plate (3) and the side plate (8) being arranged parallelly, the prefabricated T-beam further comprising a third embedded steel bar (43), one end of the third embedded steel bar (43) being arranged inside the T-beam body, the other end of the third embedded steel bar (43) passing through the end plate (3) and the second embedded steel bar (42), and the third embedded steel bar (43) being arranged perpendicularly to the second embedded steel bar (42), The side plates (8) and the end plates (3) as well as the two side plates (8) are filled with concrete; The second embedded steel bars (42) are provided with binding steel bars (6); The end plate (3) is provided with concave and convex tooth grooves on one side surface facing the side plate (8); A rubber sheet is also fixedly provided between the end plate (3) and the corbel (7).

7. The product according to claim 6, characterized in that The inner side wall of the connection end between the side plate (8) and the bottom plate (9) is also provided with an angle of 45°, and the inner side wall of the connection end between the end plate (3) and the T-beam body is also provided with an angle of 45°.

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