A type of prefabricated beam for prefabricated buildings

Abstract

This utility model relates to the field of building industrialization technology and provides a prefabricated beam for prefabricated buildings, including: a main beam body, and further including: multiple hoisting embedded parts, which are set on the top or bottom surface of the main beam body, and the multiple hoisting embedded parts are evenly arranged in a straight line. This utility model uses a main beam body prefabricated from high-strength concrete or steel-concrete composite materials, with connecting steel bars pre-embedded in the connecting ends for anchoring with the on-site poured joint concrete. A steel sleeve is pre-embedded inside the connecting ends, its outer diameter matching the pre-reserved connecting parts at the column end, enabling rapid insertion and positioning. Simultaneously, a pouring hole is provided on the surface of the connecting ends; after installation, high-strength non-shrink grout is injected through the pouring hole, making the steel bars and sleeve form an integral force-bearing structure. The steel sleeve plus the grouting sleeve, combined with the shear keyway on the surface, forms a composite connection, significantly improving the joint strength and ductility, and is simple to operate.

Description

Technical Field

[0001] This utility model relates to the field of building industrialization technology, and in particular to a prefabricated beam for prefabricated buildings. Background Technology

[0002] In modern prefabricated building systems, precast beams serve as key horizontal components connecting columns and floor slabs, and their structural form and connection methods directly affect the building's integrity, construction efficiency, and seismic performance.

[0003] However, in the existing technology, some precast beams have complex connections, and the cast-in-place connection requires a lot of formwork and steel reinforcement binding, with a lot of wet work on site and a long construction period. Secondly, when simple bolt or welding connections are used, the beam-column joints are prone to become weak links in the structure, affecting the overall load-bearing capacity and seismic performance. Therefore, it is necessary to solve these problems. Utility Model Content

[0004] The purpose of this utility model is to solve the problems existing in the prior art: some precast beams have complex connections, and the cast-in-place connection requires a lot of formwork and steel reinforcement binding, resulting in a lot of wet work on site and a long construction period. Furthermore, when simple bolt or welding connections are used, the beam-column joints are prone to become weak links in the structure, affecting the overall load-bearing capacity and seismic performance.

[0005] To achieve the above objectives, this utility model adopts the following technical solution: a prefabricated beam for assembled buildings, comprising: a main beam body, and further comprising: the prefabricated beam for assembled buildings further comprising:

[0006] Multiple hoisting embedded parts are set on the top or bottom surface of the main beam, and the multiple hoisting embedded parts are evenly arranged in a straight line;

[0007] A mounting assembly is disposed on the surface of the main beam, the mounting assembly further comprising:

[0008] The two connecting ends are fixedly mounted on the surfaces of opposite ends of the main beam.

[0009] A composite structure is disposed on the surface of the main beam, and the composite structure further includes:

[0010] The positioning tenon is fixedly installed on one side surface of the main beam.

[0011] Preferably, the combined structure further includes:

[0012] A positioning groove is formed on the surface of the main beam body on the side away from the positioning tenon;

[0013] Furthermore, the positioning groove is rotated in the same direction as the positioning tenon, which is the same size and shape.

[0014] The technical effect of adopting the above-mentioned further solution is that the positioning tenon and the positioning groove have the same shape, which is used to achieve quick centering and limiting with adjacent components during the installation process.

[0015] Preferably, the mounting components further include:

[0016] Two connecting steel bar groups are formed on the surfaces at the opposite ends of the two connecting steel bar groups, and the interior of the two connecting steel bar groups is movably embedded with an installation groove.

[0017] The technical effect of adopting the above-mentioned further solution is that the surface of the connecting steel bar group is provided with an installation groove for installing a waterproof sealing strip to prevent water seepage at the joint.

[0018] Preferably, the mounting components further include:

[0019] Two sets of sealing strips are disposed inside the two connecting ends;

[0020] The two sets of sealing strips include multiple longitudinal ribs and stirrups extending from the end faces.

[0021] The technical effect of adopting the above-mentioned further solution is that the sealing strip is used to form an integral anchor with the cast-in-place joint area concrete.

[0022] Preferably, the mounting components further include:

[0023] Two sets of shear keyways are formed on the bottom surfaces of the two connecting ends;

[0024] Furthermore, the two sets of shear-resistant keyways are distributed in a rectangular array.

[0025] The technical effect of adopting the above-mentioned further solution is that the shear-resistant keyway is used to enhance the shear resistance of the node area.

[0026] Preferably, the mounting components further include:

[0027] Two steel sleeves are pre-embedded inside the two connecting ends;

[0028] Furthermore, one end of each of the two steel sleeves extends beyond the beam end face.

[0029] The technical effect of adopting the above-mentioned further solution is that the steel sleeve is used to fit the steel bars or connectors extending from the column end.

[0030] Preferably, the mounting components further include:

[0031] Two casting holes are formed on the surfaces of the two connecting ends;

[0032] Furthermore, the two casting holes are located at the center of the steel sleeve on the inner wall of the connecting end.

[0033] The technical effect of adopting the above-mentioned further solution is that the pouring hole is used to inject high-strength grout, so as to realize the mechanical connection of the steel bars and the reliable transmission of force.

[0034] Preferably, the main beam body is provided with prestressed steel bars or pre-embedded pipeline channels inside, and the surface of the main beam body is provided with a thermal insulation layer and a decorative layer.

[0035] The technical effect of adopting the above-mentioned further solutions is that by setting steel bars or pre-embedded pipes inside the main beam, different functional requirements can be met, while the energy-saving performance can be improved by using a multi-layer structure.

[0036] Compared with the prior art, the advantages and positive effects of this utility model are as follows:

[0037] 1. In this utility model, the main beam is prefabricated from high-strength concrete or steel-concrete composite material, and is in the form of a long strip structure. It is used to bear the floor load and transfer it to the vertical components. The connecting end is pre-embedded with connecting steel bars, and the longitudinal bars extend a certain length from the end face for anchoring with the concrete of the joint poured on site. A steel sleeve is pre-embedded inside the connecting end, and its outer diameter matches the reserved connecting parts at the column end, which can realize quick insertion and positioning. At the same time, a pouring hole is provided on the surface of the connecting end. After installation, high-strength non-shrink grout is injected through the pouring hole, so that the steel bars and the sleeve form an integral force. With the addition of multiple shear keyways on the surface, which are staggered, the shear resistance of the interface is significantly improved. The steel sleeve and the grouting sleeve, together with the shear keyways on the surface, form a composite connection, which significantly improves the strength and ductility of the joint, and the operation is simple.

[0038] 2. In this utility model, multiple hoisting embedded parts are provided on the top of the main beam body, using D-ring or conical nut structure to ensure hoisting safety. Positioning tenons and positioning grooves are provided on the surface of the main beam body, which cooperate with the corresponding structure of the adjacent precast columns during hoisting to achieve millimeter-level alignment accuracy. After the connection is completed, sealant is filled at the joint and waterproof membrane is pasted on the outside to ensure the durability and waterproof performance of the joint area. Attached Figure Description

[0039] Figure 1 This utility model provides a schematic diagram of a partially unfolded structure of a prefabricated beam for prefabricated buildings;

[0040] Figure 2 This utility model provides a top view structural diagram of a prefabricated beam for prefabricated buildings;

[0041] Figure 3 This utility model provides a partial sectional view of a prefabricated beam for prefabricated buildings.

[0042] Figure 4 This utility model proposes a prefabricated beam for prefabricated buildings. Figure 1 Enlarged structural diagram at point A in the middle.

[0043] Legend:

[0044] 1. Main beam body; 101. Connection end; 1011. Connecting steel reinforcement group; 1012. Installation groove; 1013. Sealing strip; 1014. Shear keyway; 1015. Steel sleeve; 1016. Pouring hole; 102. Hoisting embedded part; 103. Positioning tenon; 104. Positioning groove. Detailed Implementation

[0045] To better understand the above-mentioned objectives, features, and advantages of this utility model, the present utility model will be further described below with reference to the accompanying drawings and embodiments. It should be noted that, unless otherwise specified, the embodiments and features described in these embodiments can be combined with each other.

[0046] Many specific details are set forth in the following description in order to provide a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Therefore, the present invention is not limited to the specific embodiments disclosed in the following specification.

[0047] Example 1, such as Figure 1-4 As shown, it includes: main beam 1, and also includes: the prefabricated beam of this prefabricated building also includes:

[0048] Multiple hoisting embedded parts 102 are set on the top or bottom surface of the main beam body 1, and the multiple hoisting embedded parts 102 are evenly arranged in a straight line.

[0049] Furthermore, each hoisting embedded part 102 is a high-strength D-ring or conical nut structure, embedded in the concrete, and firmly connected to the main beam steel reinforcement skeleton through anchor bars;

[0050] The mounting assembly is disposed on the surface of the main beam 1, and the mounting assembly also includes:

[0051] Two connecting ends 101 are fixedly mounted on the surfaces of opposite ends of the main beam 1;

[0052] A composite structure is disposed on the surface of the main beam 1. The composite structure also includes:

[0053] The positioning tenon 103 is fixedly set on the surface of one side of the main beam 1.

[0054] As examples, in this embodiment, the combined structure further includes:

[0055] The positioning groove 104 is formed on the surface of the main beam 1 away from the positioning tenon 103;

[0056] Furthermore, the positioning groove 104 is rotated in the same direction as the positioning tenon 103, with the same size and shape.

[0057] In this embodiment, the positioning groove 104 and the positioning tenon 103 are the same size, so as to achieve quick centering and limiting with adjacent components during the installation process.

[0058] Example 2, as Figure 1-4 As shown, the installation components also include:

[0059] Two connecting steel bar groups 1011 are formed on the surfaces of the two connecting ends 101 opposite each other, and the interior of the two connecting steel bar groups 1011 is movably embedded with an installation groove 1012.

[0060] As examples, in this embodiment, the installation components also include:

[0061] Two sets of sealing strips 1013 are disposed inside the two connecting ends 101;

[0062] Among them, the two sets of sealing strips 1013 include multiple longitudinal bars and stirrups extending from the end face.

[0063] As examples, in this embodiment, the installation components also include:

[0064] Two sets of shear keyways 1014 are formed on the bottom surface of the two connecting ends 101;

[0065] Furthermore, the two sets of shear keyways 1014 are arranged in a rectangular array.

[0066] As examples, in this embodiment, the installation components also include:

[0067] Two steel sleeves 1015 are pre-embedded inside the two connecting ends 101;

[0068] Furthermore, one end of each of the two steel sleeves 1015 extends out of the beam end face.

[0069] As examples, in this embodiment, the installation components also include:

[0070] Two casting holes 1016 are formed on the surfaces of the two connecting ends 101;

[0071] Furthermore, the two casting holes 1016 are located at the center of the steel sleeve 1015 on the inner wall of the connecting end 101.

[0072] In this embodiment, the steel sleeve 1015 and the grouting sleeve are combined with the shear keyway 1014 on the surface to form a composite connection, which significantly improves the strength and ductility of the node.

[0073] Example 3, as Figure 1-4As shown, the prefabricated beam of the prefabricated building also includes: prestressed steel bars or pre-embedded pipeline channels inside the main beam body 1, and an insulation layer and a finishing layer on the surface of the main beam body 1.

[0074] In this embodiment, after the connection is completed, sealant is filled at the joint and waterproof membrane is pasted on the outside to ensure the durability and waterproof performance of the joint area.

[0075] Working Principle: During use, the main beam 1 is prefabricated from high-strength concrete or steel-concrete composite material, forming a long strip structure to bear the floor load and transfer it to the vertical members. Connecting end 101 has pre-embedded connecting steel reinforcement groups 1011, with longitudinal bars extending a certain length from the end face for anchoring with the on-site poured joint concrete. A steel sleeve 1015 is pre-embedded inside the connecting end 101, its outer diameter matching the pre-reserved connector at the column end, enabling quick insertion and positioning. Simultaneously, the surface of the connecting end 101 is provided with pouring holes 1016. After installation, high-strength non-shrink grout is injected through the pouring holes 1016, making the steel reinforcement and sleeve form an integral load-bearing structure, combined with multiple surface-resistant... The shear keyways 1014 are staggered, significantly improving the shear resistance of the interface. The shear keyways 1014 on the surface are connected by a steel sleeve 1015 and a grouting sleeve, which significantly improves the strength and ductility of the joint and is easy to operate. In addition, multiple hoisting embedded parts 102 are provided on the top of the main beam 1, using D-ring or conical nut structure to ensure hoisting safety. The main beam 1 surface is provided with positioning tenons 103 and positioning grooves 104, which cooperate with the corresponding structure of the adjacent precast columns during hoisting to achieve millimeter-level alignment accuracy. After the connection is completed, the joint is filled with sealant and waterproof membrane is pasted on the outside to ensure the durability and waterproof performance of the joint area.

[0076] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model in any other way. Any person skilled in the art may make changes or modifications to the above-disclosed technical content to create equivalent embodiments for application in other fields. However, any simple modifications, equivalent changes, and modifications made to the above embodiments based on the technical essence of the present utility model without departing from the technical solution of the present utility model shall still fall within the protection scope of the technical solution of the present utility model.

Claims

1. A prefabricated beam for prefabricated buildings, comprising: The main beam (1) is characterized in that it further includes: the prefabricated beam of the assembled building also includes: Multiple hoisting embedded parts (102) are set on the top or bottom surface of the main beam body (1), and the multiple hoisting embedded parts (102) are evenly arranged in a straight line; Mounting components are disposed on the surface of the main beam (1), and the mounting components further include: Two connecting ends (101) are fixedly disposed on the surfaces of opposite ends of the main beam body (1); A composite structure is disposed on the surface of the main beam (1), and the composite structure further includes: The positioning tenon (103) is fixedly installed on one side surface of the main beam (1).

2. A prefabricated beam for prefabricated buildings according to claim 1, characterized in that: The combined structure further includes: A positioning groove (104) is formed on the side surface of the main beam (1) away from the positioning tenon (103); Furthermore, the positioning groove (104) is rotated in the same direction as the positioning tenon (103), which is the same size and shape.

3. A prefabricated beam for prefabricated buildings according to claim 1, characterized in that: The installation components also include: Two connecting steel bar groups (1011) are formed on the surfaces of the two connecting ends (101) opposite each other, and the interior of the two connecting steel bar groups (1011) is movably embedded with mounting grooves (1012).

4. A prefabricated beam for prefabricated buildings according to claim 3, characterized in that: The installation components also include: Two sets of sealing strips (1013) are disposed inside the two connecting ends (101); The two sets of sealing strips (1013) include multiple longitudinal bars and stirrups extending from the end faces.

5. A prefabricated beam for prefabricated buildings according to claim 4, characterized in that: The installation components also include: Two sets of shear keyways (1014) are formed on the bottom surface of the two connecting ends (101); Furthermore, the two sets of shear-resistant keyways (1014) are arranged in a rectangular array.

6. A prefabricated beam for prefabricated buildings according to claim 5, characterized in that: The installation components also include: Two steel sleeves (1015) are pre-embedded inside the two connecting ends (101); Furthermore, one end of each of the two steel sleeves (1015) extends out of the beam end face.

7. A prefabricated beam for prefabricated buildings according to claim 6, characterized in that: The installation components also include: Two casting holes (1016) are formed on the surfaces of the two connecting ends (101); Furthermore, the two casting holes (1016) are located at the center of the steel sleeve (1015) on the inner wall of the connecting end (101).

8. A prefabricated beam for prefabricated buildings according to claim 1, characterized in that: The prefabricated beam of the prefabricated building also includes: the main beam body (1) is provided with prestressed steel bars or pre-embedded pipeline channels inside, and the surface of the main beam body (1) is provided with a heat insulation layer and a decorative layer.

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