A precast concrete component

Abstract

This utility model relates to the field of building engineering and composite structure technology, and discloses a precast concrete component, including a PEC column and a PEC hollow beam. The PEC column has a trapezoidal notch at its connection with the PEC hollow beam, and the PEC hollow beam has a trapezoidal protrusion at its connection with the PEC column. The trapezoidal protrusion is inserted into the trapezoidal notch. A reinforcing steel plate is installed inside the PEC column. The trapezoidal notch and the trapezoidal protrusion fit together at the connection between the PEC column and the PEC hollow beam, so that most of the force between the PEC column and the PEC hollow beam is transmitted through the trapezoidal notch and the trapezoidal protrusion, reducing the force acting on the external connector. At the same time, the reinforcing steel plate is installed inside the PEC column and the reinforcing steel plate is installed inside the PEC hollow beam, which can increase the strength of the PEC column and the PEC hollow beam at the trapezoidal notch and the trapezoidal protrusion, thereby avoiding the problem of deformation and breakage at the connection between the PEC column and the PEC hollow beam.

Description

Technical Field

[0001] This utility model relates to the field of building engineering and composite structure technology, specifically to a precast concrete component. Background Technology

[0002] Prefabricated structure is short for prefabricated concrete structure, which is a concrete structure made by assembling and connecting precast components as the main load-bearing components. Precast reinforced concrete structures are one of the important directions for the development of building structures in my country. They are conducive to the development of my country's building industrialization, improving production efficiency, saving energy, developing green and environmentally friendly buildings, and improving and ensuring the quality of building projects. Conventional precast concrete structures are often assembled in two ways. One method involves exposing the reinforcing bars at the joints of the precast concrete structures, using a reinforcing bar connecting sleeve to connect the reinforcing bars of the two components, then grouting the inside of the connecting sleeve, forming molds between the ends of adjacent components, tying stirrups, pouring concrete, and then curing and demolding the concrete. This process is complex, time-consuming, inefficient, and the quality is unstable and costly. Moreover, the connection devices for precast components have complex structures and low tensile strength. The other method involves using external connecting supports to connect two precast concrete structures. In this method, when connecting PEC hollow beams and PEC columns, the forces between the two precast concrete structures are mainly transmitted through the external connecting supports. The requirements for the external connecting supports are high, and the connection strength between the external connecting supports and the precast concrete structures is also highly demanding. Utility Model Content

[0003] The purpose of this utility model is to provide a precast concrete component to solve the problems mentioned in the background art.

[0004] To achieve the above objectives, this utility model provides the following technical solution: a precast concrete component comprising a PEC column and a PEC hollow beam. The PEC column has a trapezoidal notch at its connection with the PEC hollow beam, and the PEC hollow beam has a trapezoidal protrusion at its connection with the PEC column. The trapezoidal protrusion is inserted into the trapezoidal notch. A first reinforcing steel plate is provided inside the PEC column, the shape of which matches the trapezoidal notch on the PEC column. A second reinforcing steel plate is provided inside the PEC hollow beam, the shape of which matches the trapezoidal protrusion on the PEC hollow beam. The connection between the PEC column and the PEC hollow beam is reinforced by an external connector.

[0005] Furthermore, the external connectors are provided in two sets: one set connects the PEC column and the PEC hollow beam above the PEC hollow beam, and the other set connects the PEC column and the PEC hollow beam below the PEC hollow beam, and multiple external connectors are provided in the same set.

[0006] Furthermore, a first reinforcing steel frame is provided inside the PEC column, and the first reinforcing steel frame is fixedly connected to a first reinforcing steel plate. A second reinforcing steel frame is provided inside the PEC hollow beam, and the second reinforcing steel frame is fixedly connected to a second reinforcing steel plate.

[0007] Furthermore, the external connector includes an L-shaped steel plate and connecting bolts. One side of the L-shaped steel plate is attached to the PEC column, and the other side is attached to the PEC hollow beam. The L-shaped steel plate is fixedly connected to the PEC column and the PEC hollow beam by connecting bolts, and the connecting bolts are connected to the first reinforcing steel plate and the second reinforcing steel plate.

[0008] Furthermore, an integrally formed intermediate thickened body is provided at the junction of the two sides of the L-shaped steel plate.

[0009] Furthermore, an L-shaped shielding steel plate is installed at the junction of the PEC column and the PEC hollow beam. The L-shaped shielding steel plate passes through the L-shaped steel plate, and concrete is poured into the junction between the inner side of the L-shaped shielding steel plate and the PEC column and the PEC hollow beam.

[0010] Compared with the prior art, the beneficial effects of this utility model are:

[0011] At the connection between PEC columns and PEC hollow beams, trapezoidal notches and protrusions are used to interlock, so that most of the force between the PEC columns and PEC hollow beams is transmitted through the trapezoidal notches and protrusions, reducing the force acting on the external connectors. At the same time, reinforcing steel plates are set inside the PEC columns and PEC hollow beams, which can increase the strength of the PEC columns and PEC hollow beams at the trapezoidal notches and protrusions, thereby avoiding the problems of deformation and breakage at the connection between the PEC columns and PEC hollow beams.

[0012] Because the main supporting structural steel reinforcement cage one in the PEC column and the main supporting structural steel reinforcement cage two in the PEC hollow beam are fixedly connected to the reinforcing steel plate one and the reinforcing steel plate two respectively, the steel reinforcement cage one and the reinforcing steel plate one can be integrated into a whole, and the steel reinforcement cage two and the reinforcing steel plate two can be integrated into a whole, ensuring the overall strength of the PEC column and the PEC hollow beam. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the structure of this utility model;

[0014] Figure 2 This utility model Figure 1 A structural diagram of the right side view;

[0015] Figure 3 This utility model Figure 1 A structural schematic diagram of the front sectional view;

[0016] Figure 4 This is a structural schematic diagram of the reinforcing steel cage 1, reinforcing steel plate 1, reinforcing steel cage 2, and reinforcing steel plate 2 of this utility model.

[0017] In the diagram: 1. PEC column; 101. Trapezoidal notch; 102. Reinforcing steel cage one; 103. Reinforcing steel plate one; 2. PEC hollow beam; 201. Trapezoidal protrusion; 202. Reinforcing steel cage two; 203. Reinforcing steel plate two; 3. External connector; 301. L-shaped steel plate; 302. Connecting bolt; 303. Intermediate thickening body; 4. L-shaped shielding steel plate. Detailed Implementation

[0018] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0019] Please see Figures 1-4 This utility model provides a technical solution: a precast concrete assembly, including a PEC column 1 and a PEC hollow beam 2. The PEC column 1 has a trapezoidal notch 101 at its connection with the PEC hollow beam 2. The PEC hollow beam 2 has a trapezoidal protrusion 201 at its connection with the PEC column 1, the protrusion 201 being inserted into the notch 101. A reinforcing steel plate 103 is installed inside the PEC column 1, its shape matching the trapezoidal notch 101. A second reinforcing steel plate 203 is installed inside the PEC hollow beam 2, its shape matching the trapezoidal protrusion 201. The connection between the PEC hollow beam 2 and the PEC column 1 is reinforced by an external connector 3. At the connection between the PEC column 1 and the PEC hollow beam 2, trapezoidal notches 101 and trapezoidal protrusions 201 are fitted together, so that most of the force between the PEC column 1 and the PEC hollow beam 2 is transmitted through the trapezoidal notches 101 and trapezoidal protrusions 201, reducing the force acting on the external connector 3. At the same time, reinforcing steel plate 103 is installed in the PEC column 1 and reinforcing steel plate 203 is installed in the PEC hollow beam 2, which can increase the strength of the PEC column 1 and the PEC hollow beam 2 at the trapezoidal notches 101 and trapezoidal protrusions 201, thereby avoiding the problem of deformation and breakage at the connection between the PEC column 1 and the PEC hollow beam 2.

[0020] There are two sets of external connectors 3. One set connects the PEC column 1 and the PEC hollow beam 2 above the PEC hollow beam 2, and the other set connects the PEC column 1 and the PEC hollow beam 2 below the PEC hollow beam 2. There are multiple external connectors 3 in the same set. The two sets of external connectors 3 can improve the reinforcement strength of the connection between the PEC column 1 and the PEC hollow beam 2.

[0021] The PEC column 1 is equipped with a steel reinforcement cage 102, which is fixedly connected to the reinforcing steel plate 103. The PEC hollow beam 2 is equipped with a steel reinforcement cage 202, which is fixedly connected to the reinforcing steel plate 203. Because the main supporting structure steel reinforcement cage 102 in the PEC column 1 and the main supporting structure steel reinforcement cage 202 in the PEC hollow beam 2 are fixedly connected to the reinforcing steel plate 103 and the reinforcing steel plate 203 respectively, the steel reinforcement cage 102 and the reinforcing steel plate 103 can be integrated into a whole, and the steel reinforcement cage 202 and the reinforcing steel plate 203 can be integrated into a whole, ensuring the overall strength of the PEC column 1 and the PEC hollow beam 2.

[0022] The external connector 3 includes an L-shaped steel plate 301 and a connecting bolt 302. One side of the L-shaped steel plate 301 is attached to the PEC column 1, and the other side is attached to the PEC hollow beam 2. The L-shaped steel plate 301 is fixedly connected to the PEC column 1 and the PEC hollow beam 2 by the connecting bolt 302. The connecting bolt 302 is connected to the reinforcing steel plate 103 and the reinforcing steel plate 203. By attaching the side of the L-shaped steel plate 301 to the PEC column 1 and the PEC hollow beam 2, it is ensured that the connection between the PEC column 1 and the PEC hollow beam 2 is in a vertical state. When the angle of the PEC column 1 and the PEC hollow beam 2 changes, the L-shaped steel plate 301 can prevent this change. Since the connecting bolt 302 is connected to the reinforcing steel plate 103 and the reinforcing steel plate 203, there is no need to install additional internal threaded connectors on the PEC column 1 and the PEC hollow beam 2 to achieve sufficient connection strength.

[0023] An integrally formed intermediate thickened body 303 is provided at the junction of the two sides of the L-shaped steel plate 301. The intermediate thickened body 303 can increase the deformation resistance of the two sides of the L-shaped steel plate 301.

[0024] An L-shaped shielding steel plate 4 is installed at the junction of PEC column 1 and PEC hollow beam 2. The L-shaped shielding steel plate 4 passes through L-shaped steel plate 301, and concrete is poured at the junction of the inner side of L-shaped shielding steel plate 4 and PEC column 1 and PEC hollow beam 2. The L-shaped shielding steel plate 4 is set up to guide the concrete when pouring concrete.

[0025] Working principle: When in use, insert the trapezoidal protrusion 201 on the PEC hollow beam 2 into the trapezoidal notch 101 on the PEC column 1, and then use multiple L-shaped steel plates 301 to reinforce the connection between the PEC column 1 and the PEC hollow beam 2. After placing the L-shaped shielding steel plate 4 in place, pour concrete into the L-shaped shielding steel plate 4 until the concrete solidifies, thus completing the connection between the PEC column 1 and the PEC hollow beam 2.

[0026] Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

Claims

1. A precast concrete component comprising a PEC column (1) and a PEC hollow beam (2), characterized in that: The PEC column (1) has a trapezoidal notch (101) at the connection with the PEC hollow beam (2). The PEC hollow beam (2) has a trapezoidal protrusion (201) at the connection with the PEC column (1). The trapezoidal protrusion (201) is inserted into the trapezoidal notch (101). The PEC column (1) has a first reinforcing steel plate (103) inside. The shape of the first reinforcing steel plate (103) matches the trapezoidal notch (101) on the PEC column (1). The PEC hollow beam (2) has a second reinforcing steel plate (203) inside. The shape of the second reinforcing steel plate (203) matches the trapezoidal protrusion (201) on the PEC hollow beam (2). The connection between the PEC column (1) and the PEC hollow beam (2) is reinforced by an external connector (3).

2. The precast concrete component according to claim 1, characterized in that: The external connector (3) is provided in two sets. One set connects the PEC column (1) and the PEC hollow beam (2) above the PEC hollow beam (2), and the other set connects the PEC column (1) and the PEC hollow beam (2) below the PEC hollow beam (2). There are multiple external connectors (3) in the same set.

3. A precast concrete component according to claim 1, characterized in that: The PEC column (1) is provided with a steel reinforcement cage (102), which is fixedly connected to the reinforcing steel plate (103). The PEC hollow beam (2) is provided with a steel reinforcement cage (202), which is fixedly connected to the reinforcing steel plate (203).

4. A precast concrete component according to claim 1, characterized in that: The external connector (3) includes an L-shaped steel plate (301) and a connecting bolt (302). One side of the L-shaped steel plate (301) is attached to the PEC column (1), and the other side is attached to the PEC hollow beam (2). The L-shaped steel plate (301) is fixedly connected to the PEC column (1) and the PEC hollow beam (2) by the connecting bolt (302). The connecting bolt (302) is connected to the first reinforcing steel plate (103) and the second reinforcing steel plate (203).

5. A precast concrete component according to claim 4, characterized in that: An integrally formed intermediate thickened body (303) is provided at the junction of the two sides of the L-shaped steel plate (301).

6. A precast concrete component according to claim 1, characterized in that: An L-shaped shielding steel plate (4) is installed at the junction of the PEC column (1) and the PEC hollow beam (2). The L-shaped shielding steel plate (4) passes through the L-shaped steel plate (301), and concrete is poured at the junction of the inner side of the L-shaped shielding steel plate (4) and the PEC column (1) and the PEC hollow beam (2).

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