A precast concrete hybrid girder framing member

Abstract

The utility model relates to the technical field of fabricated building structure discloses a concrete mixed beam frame prefabricated component, including concrete beam frame body, prefabricated column and the fixed assembly for locking both, the lateral wall of concrete beam frame body is equipped with connecting plate, the fixed assembly includes first fixed plate and second fixed plate who sets up oppositely, the connecting plate is contained between both, bolt is connected in second fixed plate after passing through first fixed plate to drive two board opposite movement clamping connecting plate, is equipped with limit block on first fixed plate, the recess of limit block joint is all seted up with on connecting plate and second fixed plate. The utility model realizes the quick dry -type connection of beam column through pure mechanical type fixed assembly, solves the problem that the low efficiency of wet operation connection, long construction period, the big problem of being influenced by environment in the prior art, has the beneficial effect that installation is convenient, connection is reliable, component light weight high -strength and function integration degree is high.

Description

Technical Field

[0001] This utility model relates to the field of prefabricated building structure technology, and in particular to a prefabricated concrete-mixed beam frame component. Background Technology

[0002] Prefabricated construction, as a modern construction method, involves prefabricating some or all of a building's components in a factory and then transporting them to the construction site for assembly. Due to its advantages such as high production efficiency, stable component quality, and fast on-site construction speed, it has been widely promoted and applied. In prefabricated building systems, the reliable and efficient connection of prefabricated beams and columns is the core element in ensuring structural safety and leveraging the advantages of prefabrication.

[0003] Currently, the common practice in connecting precast concrete beam-column joints is to rely on wet-work connection methods. For example, a cavity is reserved in the joint area, and after the beam-column components are installed, a second pour of high-strength grout or concrete is carried out to form an integral connection. While this method can ensure the integrity and reliability of the connection, its drawbacks are also quite obvious.

[0004] First, wet construction introduces a longer curing period. After grouting or pouring, components need to reach sufficient strength before subsequent processes can begin, significantly extending the on-site construction cycle and contradicting the initial goal of rapid construction in prefabricated buildings. Second, the quality of wet construction is greatly affected by the on-site environment, especially temperature and humidity. During winter or rainy seasons, it is difficult to guarantee the final quality of connection points. Furthermore, on-site mixing and pouring processes increase the complexity of construction and reliance on skilled workers.

[0005] Therefore, the existing connection methods for precast concrete beams generally suffer from core problems such as complex on-site construction procedures, long construction cycles, and significant environmental constraints, which have become key bottlenecks restricting the overall efficiency improvement of prefabricated buildings.

[0006] Therefore, this utility model proposes a precast concrete-mixed beam frame component to address the shortcomings of the prior art. Utility Model Content

[0007] In view of the problems in the existing technology where the connection of precast beams and columns in concrete hybrid beam precast components is mostly carried out by wet operation, resulting in complicated on-site construction procedures, long construction period, and connection quality that is greatly affected by the environment, this utility model aims to provide a precast concrete hybrid beam precast component with an improved structure that can effectively solve the above problems.

[0008] This utility model provides a precast concrete-mixed beam frame component, including a concrete beam frame body, a precast column, and a fixing component for locking the concrete beam frame body onto the precast column.

[0009] The fixing component includes a second fixing plate, a first fixing plate, bolts, and a limiting block formed on the first fixing plate.

[0010] Furthermore, the components are assembled in the following manner: an upwardly extending reinforcing bar is fixed to the top of the precast column, and a corresponding hole is provided at the bottom of the concrete beam frame body for inserting and engaging with the reinforcing bar; a connecting plate is fixedly connected to the side wall of the concrete beam frame body; a second fixing plate is fixedly connected to the top of the precast column, and the first fixing plate and the second fixing plate are arranged opposite to each other to jointly define a clamping space for accommodating the connecting plate; the shank of the bolt passes through the first fixing plate and is threaded into the second fixing plate; grooves are correspondingly provided on the connecting plate and the second fixing plate for engaging with the limiting block.

[0011] Preferably, the concrete beam frame body is a hollow structure with an integrally cast steel frame inside. This structural design effectively reduces the self-weight of the beam while ensuring load-bearing strength, making it convenient for transportation and hoisting.

[0012] Preferably, the connecting plate extends integrally from a portion of the steel frame and passes through the side wall of the concrete beam body. This integrated design ensures that the locking force applied by the fixing components can be directly and effectively transmitted to the load-bearing frame inside the beam body, enhancing the reliability of the connection.

[0013] Preferably, the interior of the concrete beam frame is also provided with prestressed steel strands along its length. By applying prestress, the tensile and crack resistance of the beam can be significantly improved, effectively offsetting the adverse effects of long-term loads and extending the service life of the structure.

[0014] Preferably, the inner wall of the precast column is fixedly connected with an insulation board, integrating the insulation function into the column during the factory prefabrication stage, reducing on-site construction procedures and improving the overall energy-saving effect of the building.

[0015] Preferably, the precast column has a reserved channel running through it along its axial direction, which provides a convenient passage for the subsequent laying of various pipelines such as water, electricity, heating and ventilation, avoiding secondary excavation of the main structure and protecting the structural integrity.

[0016] Preferably, the ends of the concrete beam frame are seated and supported on the top surface of the precast column, forming a clear and defined vertical load transfer path, which ensures the stability and safety of the structural force transmission.

[0017] Preferably, to achieve more precise bidirectional locking, the limiting block is specifically a strip-shaped block arranged in the horizontal direction, and the groove is a transverse groove adapted to the strip-shaped block. This combination of strip and groove structure can effectively resist both horizontal shearing and lateral slippage.

[0018] This utility model has the following beneficial effects: 1. This utility model, by setting a fixing assembly consisting of bolts, a first fixing plate, a second fixing plate and a limiting block, achieves dry connection of beams and columns through pure mechanical clamping and locking. It solves the problem that the existing technology of prefabricated beam and column connection mostly adopts wet operation or complex welding, resulting in long construction cycle, low efficiency and great influence from the environment. It achieves the technical effect of quick installation, high construction efficiency, reliable connection and no influence from the weather.

[0019] 2. This utility model solves the problems of excessive self-weight, difficult transportation and hoisting, and insufficient crack resistance of solid concrete components in the prior art by setting a hollow structure inside the concrete beam frame body and embedding a steel skeleton and prestressed steel strands. It achieves the technical effect of significantly reducing the weight of the components, facilitating construction, ensuring high strength and high tensile performance, and effectively extending the service life.

[0020] 3. This utility model solves the problems of secondary construction, complicated procedures, and potential damage to the main structure in the prior art for building insulation and pipeline laying by integrating an outer insulation board and an internal reserved channel on the precast column. It achieves the technical effects of high functional integration, simplified construction process, protection of structural integrity, and improvement of building energy efficiency and living comfort. Attached Figure Description

[0021] Figure 1 This is a three-dimensional structural diagram of a precast concrete-mixed beam frame component proposed in this utility model. Figure 2 This is a schematic diagram of the steel frame structure of a precast concrete-mixed beam frame component proposed in this utility model. Figure 3 This is a schematic diagram of the insulation board portion of a precast concrete hybrid beam frame component proposed in this utility model. Figure 4 This is a schematic diagram of the steel reinforcement structure of a precast concrete-mixed beam frame component proposed in this utility model. Figure 5 for Figure 4 Enlarged view of point A in the image.

[0022] Legend: 1. Concrete beam frame body; 2. Fixing components; 201. First fixing plate; 202. Bolt; 203. Connecting plate; 204. Limiting block; 205. Second fixing plate; 3. Precast column; 4. Steel frame; 5. Prestressed steel strands; 6. Insulation board; 7. Reserved duct; 8. Reinforcing steel. Detailed Implementation

[0023] Please refer to Figures 1 to 5 This utility model provides a precast concrete-mixed beam frame component, which aims to solve the problems of complex connection process, low construction efficiency, heavy components and single function in existing precast beam and column structures.

[0024] like Figure 1 and Figure 4 As shown, the precast concrete-concrete composite beam frame includes a precast column 3 and a concrete beam frame body 1 erected on top of the precast column 3. The precast column 3 provides vertical support, while the concrete beam frame body 1 serves as a horizontal load-bearing structure. To achieve a quick and stable connection between the two, a fixing component 2 is also provided. During installation, an upwardly extending steel bar 8 is fixed to the top of the precast column 3, and a corresponding hole is opened at the bottom of the concrete beam frame body 1 to engage with the steel bar 8. Initial positioning is achieved by inserting the steel bar 8 into the hole, and then the final clamping and locking is completed by the fixing component 2. Specifically, please refer to Figure 1 , Figure 2 , Figure 4 and Figure 5The fixing component 2, which serves as the core of the locking mechanism, has the following structure and operation: A connecting plate 203 is fixedly connected to the side wall of the concrete beam frame body 1. The fixing component 2 includes a second fixing plate 205, a first fixing plate 201, and a bolt 202. The second fixing plate 205 is fixedly connected to the top of the precast column 3. The first fixing plate 201 and the second fixing plate 205 are arranged opposite to each other, and they together define a clamping space for accommodating the connecting plate 203. The shank of the bolt 202 passes through the first fixing plate 201 and is threaded into the second fixing plate 205. This structure allows the first fixing plate 201 and the second fixing plate 205 to move towards each other when the bolt 202 is rotated, thereby securing the connecting plate 203 within the clamping space. The connecting plate 203 is clamped and fixed; to form a more reliable lock, a limiting block 204 is fixedly connected to the side of the first fixing plate 201 facing the connecting plate 203, and grooves that engage with the limiting block 204 are correspondingly opened on both the connecting plate 203 and the second fixing plate 205. When clamped, the limiting block 204 is embedded in the corresponding groove, forming a two-way mechanical lock; in a preferred embodiment, the limiting block 204 is a strip-shaped block arranged in the horizontal direction, and the groove is a transverse groove adapted to the strip-shaped block. Finally, the end of the concrete beam frame body 1 is seated and supported on the top surface of the precast column 3. Through the insertion and positioning of the reinforcing bar 8 and the clamping and locking of the fixing component 2, a stable and reliable beam-column joint is formed.

[0025] To achieve the goals of lightweight, high strength, and functional integration, both the concrete beam frame 1 and the precast column 3 in this embodiment adopt special composite structures. These structures are described in detail below: Please refer to the following carefully. Figure 2 and Figure 4 The interior of the concrete beam frame body 1 is not a solid structure, but is designed as a hollow structure. A steel frame 4 is integrally cast inside it. The steel frame 4 provides the main rigidity and strength support for the concrete beam frame body 1 and works together with the concrete material to bear the force. This design of combining the hollow structure with the steel frame 4 significantly reduces the overall weight of the concrete beam frame body 1. As a key component for connecting with the fixing component 2, the connecting plate 203 is preferably an integral extension of a part of the steel frame 4 and directly passes through the side wall of the concrete beam frame body 1, thereby ensuring the effective transmission of the connection force. In addition, to further enhance the tensile strength and durability of the concrete beam frame body 1, prestressed steel strands 5 are also inserted inside it along its length.

[0026] At the same time, please refer to Figure 3 The structure of the precast column 3 is also designed with integrated functions. Insulation board 6 is fixedly connected to its inner wall to undertake the thermal insulation function of the building. Inside the precast column 3, there is a reserved channel 7 that runs through it along its axis. The reserved channel 7 can be used as a channel for laying water, electricity, heating and ventilation pipelines, avoiding the excavation and damage to the main structure during later construction.

[0027] Based on the above embodiments, the present invention may further include the following preferred technical solutions: As a preferred embodiment, to enhance connection strength and structural integrity, please refer to... Figure 1 , Figure 2 and Figure 4 The connecting plate 203 extends integrally from a portion of the steel frame 4 and passes directly through the side wall of the concrete beam frame body 1. This integrated structure ensures that the locking force applied from the fixing component 2 can be directly and effectively transmitted to the internal steel frame 4.

[0028] As another preferred implementation, in order to form a clear vertical load transfer path, please refer to... Figure 1 The ends of the concrete beam frame 1 are seated and supported on the top surface of the precast column 3, ensuring that the weight of the upper structure can be stably transferred to the precast column 3 below.

[0029] As another preferred implementation method, to achieve more efficient and reliable bidirectional limiting, please refer to... Figure 5 The limiting block 204 is specifically configured as a strip-shaped block arranged in the horizontal direction, and the grooves on the connecting plate 203 and the second fixing plate 205 are correspondingly configured as transverse grooves adapted to the strip-shaped block. This combination of strip and groove is used for horizontal limiting.

[0030] The working principle of this new type of precast concrete hybrid beam frame component is as follows: When it is necessary to install the concrete beam frame body 1 and the precast column 3, the first step is to hoist and position it. The concrete beam frame body 1 is hoisted to the top of the symmetrically arranged precast column 3 using hoisting equipment. The position of the beam frame is adjusted so that the pre-set holes in the concrete beam frame body 1 are precisely aligned with the steel bars 8 fixed at the top of the precast column 3, and the steel bars 8 can be smoothly inserted into the holes, thus completing the initial positioning.

[0031] Subsequently, the concrete beam frame body 1 and the precast column 3 are stably connected by the fixing component 2. During operation, the bolt 202 inside the fixing component 2 is rotated, and the bolt 202 drives the first fixing plate 201 and the second fixing plate 205 to move towards each other, clamping and fixing the connecting plate 203 on the side of the concrete beam frame body 1. At the same time, the limiting block 204 on the first fixing plate 201 will be embedded in the corresponding grooves on the connecting plate 203 and the second fixing plate 205, effectively preventing the concrete beam frame body 1 from horizontally shaking during subsequent use.

[0032] In terms of load-bearing capacity, the steel frame 4 built into the concrete beam frame body 1 works in conjunction with the hollow structure of the concrete beam frame body 1 to significantly reduce the overall weight of the beam frame. At the same time, the supporting role of the steel frame 4 and the compressive strength of the concrete work together to ensure that the concrete beam frame body 1 has sufficient rigidity and strength to meet the load-bearing requirements of the building. In addition, the prestressed steel strands 5 pre-set inside the concrete beam frame body 1 can significantly enhance the tensile performance of the concrete beam frame body 1, effectively offset the tensile stress generated under long-term load, delay the generation and development of cracks, and extend the service life of the concrete beam frame body 1.

[0033] In terms of functional integration, the pre-reserved holes 7 inside the precast column 3 can serve as channels for built-in pipelines, facilitating the subsequent laying of water, electricity, heating and ventilation pipelines, avoiding the need to drill holes in the column later and damage the structure. At the same time, the insulation board 6 installed on the inner side of the precast column 3 can play a role in heat insulation, reducing building energy consumption and improving indoor living comfort.

Claims

1. A precast concrete beam frame component, comprising a concrete beam frame body (1) and a precast column (3), wherein the top of the precast column (3) is fixed with an upwardly extending steel bar (8), and the bottom of the concrete beam frame body (1) is provided with a hole for insertion and engagement with the steel bar (8). Its features are, It also includes a fixing component (2) for locking the concrete beam body (1) to the precast column (3); The side wall of the concrete beam frame body (1) is fixedly connected with a connecting plate (203). The fixing component (2) includes a second fixing plate (205), a first fixing plate (201), and bolts (202); The second fixing plate (205) is fixedly connected to the top of the precast column (3), and the first fixing plate (201) and the second fixing plate (205) are arranged opposite to each other to jointly define the clamping space for accommodating the connecting plate (203); The shank of the bolt (202) passes through the first fixing plate (201) and is screwed into the second fixing plate (205), so that when the bolt (202) is rotated, the first fixing plate (201) and the second fixing plate (205) move towards each other to clamp the connecting plate (203). A limiting block (204) is fixedly connected to the side of the first fixing plate (201) facing the connecting plate (203). The connecting plate (203) and the second fixing plate (205) are respectively provided with grooves that engage with the limiting block (204).

2. The precast concrete-mixed beam frame component according to claim 1, characterized in that, The concrete beam frame body (1) is a hollow structure, and a steel frame (4) is integrally cast inside it.

3. A precast concrete-mixed beam frame component according to claim 2, characterized in that, The connecting plate (203) extends integrally from a portion of the steel frame (4) and passes through the side wall of the concrete beam frame body (1).

4. A precast concrete-mixed beam frame component according to claim 1, characterized in that, The concrete beam frame body (1) is also provided with prestressed steel strands (5) running through its length.

5. A precast concrete-mixed beam frame component according to claim 1, characterized in that, The inner wall of the precast column (3) is fixedly connected with an insulation board (6).

6. A precast concrete-mixed beam frame component according to claim 1, characterized in that, The precast column (3) has a reserved channel (7) that runs through it along its axial direction.

7. A precast concrete-mixed beam frame component according to claim 1, characterized in that, The end of the concrete beam frame body (1) is seated and supported on the top surface of the precast column (3).

8. A precast concrete-mixed beam frame component according to claim 1, characterized in that, The limiting block (204) is a strip-shaped block arranged in the horizontal direction, and the groove is a transverse groove adapted to the strip-shaped block.

Images