Fabricated building concrete precast beam

Abstract

The utility model discloses an assembly type building concrete precast beam which comprises a beam body, first positioning parts are arranged at the two ends of the beam body, the first positioning parts are used for positioning the ends of the beam body, a second positioning part is arranged on the span section of the beam body, and the second positioning part is used for positioning a strut beam. According to the utility model, the first positioning part and the second positioning part are arranged on the beam body, so that the precast beam can be quickly and accurately positioned on a construction site, the assembly time is shortened, and the construction efficiency is improved. And secondly, through positioning of the first positioning part and the second positioning part, the workload of field adjustment is reduced, the accuracy of connection between the beam body and other components is improved, tight connection between the components is ensured, and the overall stability and safety of a building structure are improved.

Description

Technical Field

[0001] The utility model relates to the technical field of precast beams, and more specifically, to a precast concrete beam for assembled buildings. Background Art

[0002] Precast concrete beams are manufactured in a standardized and modular manner in factories, realizing the large-scale production of building components, reducing wet operations at the construction site, and significantly shortening the construction period. The standardized production of precast concrete beams in factories ensures the dimensional accuracy and material properties of the components, thus effectively improving the overall quality of the building.

[0003] During the assembly process of precast beams, precise positioning and adjustment are required on-site. This not only requires construction workers to have a high technical level but also relies on advanced measurement and positioning tools such as 3D scanning technology and laser rangefinders to ensure the precise matching between components. However, due to the complexity and variability of the construction site environment, such as weather factors and site conditions, they may all have an adverse impact on the positioning and adjustment work. In addition, small deviations between different components may also lead to loose connections or a decline in structural performance, thereby affecting the overall efficiency and quality of the construction of assembled buildings.

[0004] The above deficiencies need to be improved. Summary of the Invention

[0005] In order to solve the problem that it is inconvenient to position and connect with other components during the assembly process of existing precast beams, the utility model provides a precast concrete beam for assembled buildings.

[0006] The technical solution of the utility model is as follows:

[0007] A precast concrete beam for assembled buildings includes a beam body. First positioning parts are arranged at both ends of the beam body, and the first positioning parts are used to position the ends of the beam body. Second positioning parts are arranged at the span of the beam body, and the second positioning parts are used to position supporting beams.

[0008] Furthermore, the beam body includes a steel reinforcement cage and concrete coated outside the steel reinforcement cage. The steel reinforcement cage includes stirrups and longitudinal bars passing through the stirrups. The distance between adjacent stirrups is less at the positions close to the first positioning part and the second positioning part than at other positions. A suspension bar is arranged at the second positioning part.

[0009] Furthermore, the first positioning part includes a connecting piece buried inside the beam body. A positioning piece is arranged at the bottom of the connecting end of the connecting piece, and the positioning piece is engaged with a positioning hole on the column body.

[0010] Further, the connecting piece and the positioning piece are made of steel. The connecting piece is provided with a connecting hole, the positioning piece is inserted into the connecting hole, the connecting piece and the positioning piece are welded together, and the connecting piece is welded to the steel reinforcement cage.

[0011] Further, the beam body is provided with a groove at the end, and the positioning piece is located in the groove.

[0012] Further, the second positioning portion includes a positioning groove, and the supporting beam is provided with a positioning block that engages with the positioning groove.

[0013] Further, a lifting ring is embedded in the beam body, and the lifting ring is in the shape of a "ji".

[0014] Further, there are two lifting rings, and the distances from the two lifting rings to the nearest end of the beam body are equal.

[0015] Further, a mounting member is provided on the side surface of the beam body, and the mounting member is used to connect the accessory structure.

[0016] Further, the mounting member is an anchor bolt or an anchor plate.

[0017] For the utility model according to the above solution, its beneficial effects are as follows. By providing the first positioning portion and the second positioning portion on the beam body, the precast beam can be quickly and accurately positioned at the construction site, shortening the assembly time and improving the construction efficiency. Secondly, through the positioning of the first positioning portion and the second positioning portion, the workload of on-site adjustment is reduced, the accuracy of the connection between the beam body and other components is improved, ensuring the tight connection between the components, and enhancing the overall stability and safety of the building structure. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model, the following will briefly introduce the drawings required for use in the embodiments or the description of the prior art. Obviously, the following drawings are only some embodiments of the present utility model, and for those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0019] Figure 1 It is a front view structural schematic diagram of the present utility model;

[0020] Figure 2 It is a top view structural schematic diagram of the present utility model;

[0021] Figure 3 It is an internal structural schematic diagram of the present utility model;

[0022] Figure 4 It is Figure 3 The enlarged view of the structure at A in

[0023] Figure 5 is a partial structural schematic diagram of the connection state of the present utility model;

[0024] Figure 6 is Figure 5 a cross-sectional view taken along line B-B in

[0025] Among them, each reference numeral in the figure: 1, beam body; 101, first positioning portion; 102, second positioning portion; 103, steel reinforcement cage; 104, longitudinal reinforcement; 105, stirrup; 106, suspension bar; 107, concrete; 108, connecting member; 109, positioning member; 110, connection hole; 111, groove; 2, lifting ring; 3, mounting member; 4, column body; 401, corbel. Specific embodiments

[0026] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present utility model clearer and more understandable, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present utility model and are not used to limit the present utility model.

[0027] It should be noted that when a component is referred to as "fixed" or "set" or "connected" to another component, it can be directly or indirectly located on that other component. The terms "upper", "lower", "left", "right", "front", "rear", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. indicate the orientation or position based on the orientation or position shown in the drawings, and are only for the convenience of description and cannot be understood as a limitation to the present technical solution. The terms "first", "second", etc. are only used for the purpose of convenient description and cannot be understood as indicating or implying relative importance or implicitly indicating the quantity of technical features. The meaning of "multiple" is two or more, unless otherwise clearly and specifically defined. The meaning of "several" is one or more, unless otherwise clearly and specifically defined.

[0028] As Figures 1 to 6 shown, in an embodiment of the present utility model, a precast concrete beam for an assembled building includes a beam body 1. First positioning portions 101 are provided at both ends of the beam body 1, and the first positioning portions 101 are used to position the ends of the beam body 1. Second positioning portions 102 are provided in the span section of the beam body 1, and the second positioning portions 102 are used to position the supporting beam.

[0029] During construction, the precast beam is lifted to a predetermined position by a hoisting device, and is preliminarily butted with the column body 4 quickly and accurately through the first positioning portions 101. The first positioning portions 101 align the ends of the beam body 1 with the column body 4, reducing the on-site adjustment time. Subsequently, for the beam body 1 that needs to connect the supporting beam, the second positioning portions 102 are used to position the supporting beam to ensure accurate positioning and connection between the supporting beam and the beam body 1.

[0030] In this embodiment, by providing the first positioning portion 101 and the second positioning portion 102 on the beam body 1, the rapid and accurate positioning of the precast beam at the construction site is achieved, the assembly time is shortened, and the construction efficiency is improved. Secondly, through the positioning of the first positioning portion 101 and the second positioning portion 102, the workload of on-site adjustment is reduced, the accuracy of the connection between the beam body 1 and other components is improved, the tight connection between the components is ensured, and the overall stability and safety of the building structure are enhanced.

[0031] As Figure 3 shown, in a preferred example, the beam body 1 includes a steel reinforcement cage 103 and concrete 107 wrapped outside the steel reinforcement cage 103. The steel reinforcement cage 103 includes stirrups 105 and longitudinal bars 104 passing through the stirrups 105. The spacing between adjacent stirrups 105 is smaller near the first positioning portion 101 and the second positioning portion 102 than at other places, and a suspension bar 106 is provided at the second positioning portion 102.

[0032] When manufacturing the precast beam, the main body of the steel reinforcement cage 103 is tied by the stirrups 105 and the longitudinal bars 104. Among them, in the areas near the first positioning portion 101 and the second positioning portion 102, the spacing of the stirrups 105 is smaller to enhance the structural strength of these key connection points. In addition, a suspension bar 106 is provided at the second positioning portion 102. Subsequently, concrete 107 is poured outside the steel reinforcement cage 103, and the compactness of the concrete 107 and the tight combination with the steel bars are ensured through processes such as vibration. And the concrete 107 does not cover the upper part of the steel reinforcement cage 103, which is convenient for tying the connecting bars between the beam and the column and between the beam and the beam.

[0033] In this embodiment, by reducing the spacing of the stirrups 105 near the first positioning portion 101 and the second positioning portion 102, the structural strength of the connection points is enhanced, so that the precast beam can be butted with the column body 4 or other precast beams more stably and accurately during assembly, and the potential safety hazards caused by insecure connection are reduced. Secondly, by providing the suspension bar 106 at the second positioning portion 102, the structural strength of the span section is improved, the load-bearing capacity of the precast beam is increased, and the overall stability and durability of the structure are enhanced.

[0034] As Figures 4 to 6 shown, in a preferred example, the first positioning portion 101 includes a connecting member 108 embedded inside the beam body 1. A positioning member 109 is provided at the bottom of the connecting end of the connecting member 108, and the positioning member 109 is engaged with the positioning hole on the column body 4. A corbel 401 is provided on the column body 4. The corbel 401 is made of steel, the positioning hole is provided on the corbel 401, and after the positioning member 109 is inserted into the positioning hole, the positioning member 109 and the corbel 401 are welded and connected.

[0035] The connecting member 108 and the positioning member 109 are made of steel. The connecting member 108 is provided with a connecting hole 110 , and the positioning member 109 is inserted into the connecting hole 110 . The connecting member 108 and the positioning member 109 are welded together, and the connecting member 108 and the steel cage 103 are welded together.

[0036] During the construction process, the connector 108 is made of a steel plate, which extends from a section of the steel cage 103 and is welded to the steel cage 103. Subsequently, a positioning member 109 is installed at the bottom of the connecting end of the connector 108, and the top of the positioning member 109 is inserted into the positioning hole. The top of the positioning member 109 is provided with a chamfer to reduce the area of its top and facilitate insertion into the positioning hole. The positioning member 109 is also made of steel, and the positioning member 109 and the connector 108 are connected by welding. When the beam body 1 is transported to the construction site and is ready to be docked with the column body 4, the positioning member 109 is positioned with the positioning hole on the corbel 401, and then the positioning member 109 on the beam body 1 is accurately inserted into the positioning hole of the corbel 401, and then the positioning member 109 is firmly connected to the corbel 401 by welding to ensure a stable docking between the beam body 1 and the column body 4.

[0037] In this embodiment, by burying the steel connector 108 in the beam body 1 and setting the positioning member 109 thereon to engage with the positioning hole on the column 4, high-precision docking between the beam body 1 and the column 4 is achieved, which effectively improves the installation accuracy and efficiency of the prefabricated building, reduces the adjustment workload in traditional construction, and speeds up the construction progress. Secondly, the welding connection between the positioning member 109 and the corbel 401 enhances the structural strength of the connection point between the beam body 1 and the column 4, making the entire connection structure more stable and reliable, and able to withstand greater loads. In addition, the welding connection between the connector 108 and the steel cage 103 also enhances the overall structural strength of the beam body 1, and improves the overall bearing capacity and seismic performance of the beam body 1.

[0038] like Figure 6 As shown, in a preferred embodiment, a groove 111 is provided at the end of the beam body 1 , and the positioning member 109 is located in the groove 111 .

[0039] The depth and size of the groove 111 must match the positioning piece 109. The positioning piece 109 can be hidden in the groove 111. On the one hand, it prevents the protruding positioning piece 109 from damaging or destroying other facilities during transportation to ensure safety. On the other hand, after assembly, there is a trimming margin, which is convenient for trimming the joint to be flush.

[0040] like Figure 1 and Figure 2 As shown, in a preferred embodiment, the second positioning portion 102 includes a positioning groove, and a positioning block engaged with the positioning groove is provided on the support beam.

[0041] For the beam body 1 with a supporting beam set on one side, a positioning groove is provided on one side thereof. For the beam body 1 with supporting beams set on both sides, positioning grooves are provided on both sides thereof.

[0042] In this embodiment, by providing a positioning groove on the beam body 1 and configuring positioning blocks on the supporting beams, high-precision docking between beams is achieved, the installation process is simplified, the accuracy and reliability of docking are improved, and potential safety hazards caused by insecure connection are reduced.

[0043] As Figure 1 and Figure 2 shown, in a preferred example, lifting rings 2 are embedded in the beam body 1, and the lifting rings 2 are in a "Ji" shape.

[0044] There are two lifting rings 2, and the distances from the two lifting rings 2 to the nearest end of the beam body 1 are equal.

[0045] During the manufacturing process of the beam body 1, steel bars are bent into a "Ji" shape to form the lifting rings 2, and then the lifting rings 2 are welded to the steel reinforcement cage 103. After pouring, the lifting rings 2 are stably connected to the beam body 1. When the beam body 1 is manufactured and transported to the construction site, it can be hoisted to the predetermined position through the lifting rings 2.

[0046] In this embodiment, the "Ji"-shaped lifting rings 2 can bear a large tensile force, enhancing the stability and safety of the beam body 1 during the hoisting process. At the same time, the equal distances from the two lifting rings 2 to the end of the beam body 1 make the hoisting process more stable and improve the safety of hoisting.

[0047] As Figure 1 and Figure 2 shown, in a preferred example, mounting parts 3 are provided on the side of the beam body 1, and the mounting parts 3 are used to connect accessory structures such as steel structures, foundations, guardrails, etc., playing a role of support and fixation.

[0048] The mounting parts 3 are anchor bolts or anchor plates.

[0049] During the prefabrication process of the beam body 1, the positions and quantities of the mounting parts 3 are determined according to the design drawings, anchor bolts or anchor plates are preset, and then the beam body 1 is poured. After pouring is completed, the mounting parts 3 are firmly connected to the beam body 1. After the beam body 1 is assembled, accessory structures such as steel structures, foundations, guardrails, etc. can be fixed to the mounting parts 3 by means of bolt connection or welding at the construction site.

[0050] In this embodiment, since the mounting member 3 has been accurately positioned and firmly fixed during the prefabrication stage of the beam body 1, there is no need to perform cumbersome positioning and installation work at the construction site, thus improving the construction efficiency. Secondly, the integrated structure of the mounting member 3 and the beam body 1 makes the connection firm, thereby improving the bearing capacity and seismic performance of the overall structure and enhancing the stability and safety of the structure. In addition, the mounting member 3 makes the installation of the accessory structure more flexible and convenient, and can meet the requirements of different architectural designs and functions.

[0051] The above are only the preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent replacements, and improvements made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims

1. A precast concrete beam for prefabricated buildings, characterized in that It includes a beam body, with first positioning parts arranged at both ends of the beam body. The first positioning parts are used to position the ends of the beam body. The first positioning parts include connecting parts embedded inside the beam body. A positioning part is arranged at the bottom of the connecting end of the connecting part, and the positioning part is engaged with a positioning hole on the column body. A second positioning part is arranged on the span of the beam body. The second positioning part is used to position a secondary beam. The second positioning part includes a positioning groove, and a positioning block engaged with the positioning groove is arranged on the secondary beam.

2. The precast concrete beam for prefabricated building according to claim 1, wherein The beam body includes a steel reinforcement cage and concrete coated outside the steel reinforcement cage. The steel reinforcement cage includes stirrups and longitudinal bars passing through the stirrups. The distance between adjacent stirrups is less at positions close to the first positioning part and the second positioning part than at other positions. A suspension bar is arranged at the second positioning part.

3. A precast concrete beam for prefabricated buildings according to claim 1, characterized in that, The connecting part and the positioning part are made of steel. A connecting hole is arranged on the connecting part, the positioning part is inserted into the connecting hole, the connecting part and the positioning part are connected by welding, and the connecting part and the steel reinforcement cage are connected by welding.

4. A precast concrete beam for prefabricated buildings according to claim 1, characterized in that, A groove is arranged at the end of the beam body, and the positioning part is located in the groove.

5. A precast concrete beam for prefabricated buildings according to claim 1, characterized in that, A lifting ring is embedded on the beam body, and the lifting ring is in a "Ji" shape.

6. A precast concrete beam for prefabricated buildings according to claim 5, characterized in that There are two lifting rings, and the distances from the two lifting rings to the nearest end of the beam body are equal.

7. A precast concrete beam for an assembled building according to claim 1, characterized in that, Mounting parts are arranged on the side of the beam body, and the mounting parts are used to connect accessory structures.

8. The precast concrete beam for prefabricated building according to claim 7, characterized in that, The mounting parts are anchor bolts or anchor plates.

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