Lightning protection grounding structure for fabricated building
By using a lightning protection grounding structure with pre-embedded connecting plates and pre-embedded grounding conductors in prefabricated buildings, the problems of high connection difficulty and low construction efficiency of traditional lightning protection grounding methods are solved, achieving rapid connection and efficient construction, and ensuring the safety of current conduction during lightning strikes.
Patent Information
- Application Number
- CN202423019234.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-09
- Publication Date
- 2025-12-09
- Estimated Expiration
- 2034-12-09
AI Technical Summary
Traditional lightning protection grounding methods are difficult to connect in prefabricated building construction, affecting production and construction efficiency, lacking flexibility and adaptability, and difficult to integrate into the routine production of prefabricated components.
The lightning protection grounding structure adopts pre-embedded connecting plates and pre-embedded grounding conductors. By pre-embedding conductors in the upper precast columns and the lower cast-in-place columns to connect with the main reinforcement, the connecting plates are used to achieve rapid connection, which is suitable for the construction process of prefabricated buildings.
It reduces on-site construction difficulty, improves construction efficiency, shortens the construction period, ensures rapid current conduction during lightning strikes, and protects the safety of buildings and equipment.
Smart Images
Figure CN223651664U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the field of lightning protection technology for prefabricated buildings, and in particular relates to a lightning protection grounding structure for prefabricated buildings. Background Technology
[0002] With the promotion of prefabricated buildings, the application of lightning protection grounding for prefabricated columns is becoming increasingly widespread. However, traditional lightning protection grounding methods are difficult to connect during the construction of prefabricated buildings, and affect the production and construction efficiency of prefabricated components. They lack sufficient flexibility and adaptability when dealing with the fast construction pace and diverse structural forms of prefabricated buildings, and are difficult to integrate into the conventional production of existing prefabricated components.
[0003] Therefore, there is an urgent need for a lightning protection grounding structure that is easy to construct and can be easily integrated with existing prefabricated components. Utility Model Content
[0004] The purpose of this utility model is to overcome the shortcomings of the existing technology and provide a lightning protection grounding structure for prefabricated buildings. It can adapt to the construction process of prefabricated buildings, reduce the difficulty and workload of on-site construction, improve construction efficiency, and shorten the construction period, taking into account the different structural characteristics of the upper prefabricated columns and the lower cast-in-place columns in the on-site construction.
[0005] To achieve the above objectives, the technical solution adopted by this utility model is as follows: a lightning protection grounding structure for prefabricated buildings, comprising an upper prefabricated column and a lower cast-in-place column for constituting the prefabricated building, wherein both the upper prefabricated column and the lower cast-in-place column comprise a concrete matrix and a plurality of main reinforcing bars disposed within the concrete matrix; the lightning protection grounding structure comprises a connecting plate pre-embedded on the outside of the upper prefabricated column, a plurality of first pre-embedded grounding conductors pre-embedded inside the upper prefabricated column, and a plurality of second pre-embedded grounding conductors pre-embedded inside the lower cast-in-place column;
[0006] The connecting plate is exposed on the outer surface of the upper precast column, and the first embedded grounding conductor is connected to the connecting plate and the main reinforcement inside the upper precast column.
[0007] One section of the second embedded grounding conductor is connected to the main reinforcement bar in the lower cast-in-place column, and the other section of the second embedded grounding conductor protrudes from the concrete matrix of the lower cast-in-place column and can be connected to the connecting plate.
[0008] Optionally, the connecting plate is sunk to the outer surface of the concrete substrate, and the connecting plate and the concrete substrate form a groove with a depth greater than the outer diameter of the first and second pre-embedded grounding conductors, and the groove is provided with a slot opening facing the lower cast-in-place column.
[0009] Optionally, the first pre-embedded grounding conductor is connected to the connecting plate and is attached to the inner side of the concrete substrate, while the second pre-embedded grounding conductor is connected to the connecting plate and is located away from the outer side of the concrete substrate.
[0010] Optionally, the first embedded grounding conductor and the second embedded grounding conductor are welded to the main reinforcing bar and the connecting plate.
[0011] Optionally, the number of the first pre-embedded grounding conductor and the second pre-embedded grounding conductor is at least two.
[0012] Optionally, the length of the first and second pre-embedded grounding conductors welded to the main reinforcing bar is not less than five times the diameter of the first and second pre-embedded grounding conductors, and the length of the first and second pre-embedded grounding conductors welded to the connecting plate is not less than five times the diameter of the first and second pre-embedded grounding conductors.
[0013] Optionally, the groove can be filled with a layer of cement mortar flush with the concrete substrate.
[0014] Optionally, the first embedded grounding conductor and the second embedded grounding conductor are welded to the main reinforcing bar and the connecting plate on both sides.
[0015] Compared with existing technologies, the beneficial effects achieved by this utility model are as follows: During the production of the upper precast columns, a first embedded grounding conductor and a connecting plate connected to the main reinforcement are pre-embedded. A second embedded grounding conductor connected to the main reinforcement is pre-embedded in the lower cast-in-place columns. The first and second embedded grounding conductors are connected by a connecting plate exposed on the surface of the upper precast column. This allows the main reinforcement in both the upper and lower precast columns to quickly conduct lightning current when the building is subjected to lightning strikes, reducing the damage of lightning overvoltage to the building and its internal electrical equipment. The lightning protection grounding structure in this technical solution addresses the different structural characteristics of the upper precast columns and the lower cast-in-place columns in prefabricated buildings. It adapts well to the construction process of prefabricated buildings, reduces on-site construction difficulty and workload, improves construction efficiency, and shortens the construction period. Attached Figure Description
[0016] The present invention will be further described below with reference to the accompanying drawings and embodiments.
[0017] Figure 1 This is a schematic diagram of the lightning protection grounding structure in a preferred embodiment of the present invention;
[0018] Figure 2 This is a side view of the lightning protection grounding structure in a preferred embodiment of the present invention;
[0019] Among them, 1. upper precast column; 2. lower cast-in-place column; 3. main reinforcement; 4. connecting plate; 5. first embedded grounding conductor; 6. second embedded grounding conductor. Detailed Implementation
[0020] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments. These drawings are simplified schematic diagrams, which are only used to illustrate the basic structure of the present invention in a schematic manner, and therefore only show the components related to the present invention.
[0021] It should be noted that if directional indicators (such as up, down, bottom, top, etc.) are involved in this embodiment, these directional indicators are only used to explain the relative positional relationship and movement of the components in a specific posture. If the specific posture changes, the directional indicators will also change accordingly. The terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Therefore, features defined with "first" and "second" may explicitly or implicitly include one or more of that feature. Unless otherwise explicitly specified and limited, the terms "set," "connected," and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal connection of two components. For those skilled in the art, the specific meaning of the above terms in this utility model can be understood according to the specific circumstances.
[0022] like Figures 1-2 As shown, a lightning protection grounding structure for prefabricated buildings includes an upper precast column 1 and a lower cast-in-place column 2 constituting the prefabricated building. Both the upper precast column 1 and the lower cast-in-place column 2 include a concrete matrix and several main reinforcing bars 3 embedded within the concrete matrix. Based on the existing prefabricated structure of the upper precast column 1, the lightning protection grounding structure includes a connecting plate 4 embedded on the outside of the upper precast column 1, several first embedded grounding conductors 5 embedded inside the upper precast column 1, and several second embedded grounding conductors 6 embedded inside the lower cast-in-place column 2. This lightning protection grounding structure addresses the different structural characteristics of the upper precast column 1 in prefabricated buildings and the lower cast-in-place column 2 during on-site construction. It can well adapt to the construction process of prefabricated buildings, reduce on-site construction difficulty and workload, improve construction efficiency, and shorten the construction period. Specifically, the connecting plate 4 and the first embedded grounding conductors 5 are pre-embedded during the production process of the upper precast column 1, which is convenient to operate and allows for precise construction in a standardized factory production environment. As for the lower-level cast-in-place column 2, it is also relatively easy to pre-embed the second pre-embedded grounding conductor 6, which only needs to be positioned according to the structural requirements when pouring concrete.
[0023] Furthermore, the connecting plate 4 is exposed on the outer surface of the upper precast column 1. The first embedded grounding conductor 5 is connected to the connecting plate 4 and the main reinforcement 3 inside the upper precast column 1. One section of the second embedded grounding conductor 6 is connected to the main reinforcement 3 inside the lower cast-in-place column 2, and the other section of the second embedded grounding conductor 6 protrudes from the concrete matrix of the lower cast-in-place column 2 and can be connected to the connecting plate 4. The first embedded grounding conductor 5, the second embedded grounding conductor 6, and the connecting plate 4 are conductive. The first embedded grounding conductor 5 and the second embedded grounding conductor 6 are connected to the main reinforcement 3 inside the upper precast column 1 and the lower cast-in-place column 2. The main reinforcement 3 itself has good stability and conductivity in the column structure. The combination of the two allows the grounding system to make full use of the characteristics of the main reinforcement 3, ensuring that the building can quickly conduct lightning current when subjected to lightning strikes, reducing the damage of lightning overvoltage to the building and internal electrical equipment. Moreover, the connecting plate 4 is exposed on the surface of the upper precast column 1, which not only facilitates the production of the upper precast column 1, but also facilitates on-site construction and later maintenance personnel to inspect it.
[0024] Furthermore, to facilitate on-site operation by construction personnel, the second pre-embedded grounding wire is connected to the connecting plate 4, such as... Figure 2 As shown, the connecting plate 4 is recessed into the outer surface of the concrete substrate. The connecting plate 4 and the concrete substrate form a groove with a depth greater than the outer diameter of the first pre-embedded grounding conductor 5 and the second pre-embedded grounding conductor 6. The groove has an opening facing the lower cast-in-place column 2. The second pre-embedded grounding conductor 6 can extend into the groove through the opening and fit onto the connecting plate 4 without excessive bending. The groove can be filled with a cement mortar layer flush with the concrete substrate to protect the second pre-embedded grounding conductor and the connecting plate 4 from damage.
[0025] The above, such as Figure 2 As shown, the first embedded grounding conductor 5 is connected to the connecting plate 4 and is attached to the inner side of the concrete substrate, while the second embedded grounding conductor 6 is connected to the connecting plate 4 and is located away from the outer side of the concrete substrate, so as to prevent the first embedded grounding conductor 5 from affecting the connection between the second embedded grounding conductor 6 and the connecting plate 4.
[0026] In this technical solution, to ensure that the electrical connection between the first embedded grounding conductor 5 and the second embedded grounding conductor 6 meets the reliability requirements for lightning protection, such as Figure 1As shown, the number of the first embedded grounding conductor 5 and the second embedded grounding conductor 6 is at least two. Simultaneously, the first embedded grounding conductor 5 and the second embedded grounding conductor 6 are welded to the main reinforcement 3 and the connecting plate 4. Furthermore, the first embedded grounding conductor 5 and the second embedded grounding conductor 6 are welded to both sides of the main reinforcement 3 and the connecting plate 4. Specifically, in this technical solution, the first embedded grounding conductor 5 and the second embedded grounding conductor 6 are typically steel bars or flat iron. When steel bars are selected as conductors, the length of the first embedded grounding conductor 5 and the second embedded grounding conductor 6 welded to the main reinforcement 3 is not less than five times the diameter of the first embedded grounding conductor 5 and the second embedded grounding conductor 6, and the length of the first embedded grounding conductor 5 and the second embedded grounding conductor 6 welded to the connecting plate 4 is not less than five times the diameter of the first embedded grounding conductor 5 and the second embedded grounding conductor 6. When flat iron is selected as the conductor, the length of the first embedded grounding conductor 5 and the second embedded grounding conductor 6 welded to the main reinforcement 3 should not be less than twice the width of the first embedded grounding conductor 5 and the second embedded grounding conductor 6. The length of the first embedded grounding conductor 5 and the second embedded grounding conductor 6 welded to the connecting plate 4 should not be less than twice the width of the first embedded grounding conductor 5 and the second embedded grounding conductor 6. In this case, the three-sided welding method should be used for welding.
[0027] Working principle: During the production of the upper precast column 1, a first pre-embedded grounding conductor 5 and a connecting plate 4 connected to the main reinforcement 3 are pre-embedded. In the lower cast-in-place column 2, a second pre-embedded grounding conductor 6 connected to the main reinforcement 3 is pre-embedded. The first pre-embedded grounding conductor 5 and the second pre-embedded grounding conductor 6 are connected by the connecting plate 4 exposed on the surface of the upper precast column 1. This allows the main reinforcement 3 in the upper precast column 1 and the lower cast-in-place column 2 to quickly conduct lightning current when the building is subjected to lightning strikes, reducing the damage of lightning overvoltage to the building and internal electrical equipment.
[0028] Based on the preferred embodiments of this utility model described above, those skilled in the art can make various changes and modifications without departing from the technical concept of this utility model. The technical scope of this utility model is not limited to the contents of the specification, but must be determined according to the scope of the claims.
Claims
1. A lightning protection grounding structure for prefabricated buildings, comprising an upper precast column (1) and a lower cast-in-place column (2) constituting the prefabricated building, wherein both the upper precast column (1) and the lower cast-in-place column (2) comprise a concrete matrix and a plurality of main reinforcing bars (3) disposed within the concrete matrix, characterized in that: The lightning protection grounding structure includes a connecting plate (4) pre-embedded on the outside of the upper precast column (1), several first pre-embedded grounding conductors (5) pre-embedded inside the upper precast column (1), and several second pre-embedded grounding conductors (6) pre-embedded inside the lower cast-in-place column (2). The connecting plate (4) is exposed on the outer surface of the upper precast column (1), and the first pre-embedded grounding conductor (5) is connected to the connecting plate (4) and the main reinforcement (3) inside the upper precast column (1). One section of the second embedded grounding conductor (6) is connected to the main reinforcement (3) in the lower cast-in-place column (2), and the other section of the second embedded grounding conductor (6) protrudes from the concrete matrix of the lower cast-in-place column (2) and can be connected to the connecting plate (4).
2. The lightning protection grounding structure for prefabricated buildings according to claim 1, characterized in that: The connecting plate (4) is sunk to the outer surface of the concrete substrate. The connecting plate (4) and the concrete substrate form a groove with a depth greater than the outer diameter of the first pre-embedded grounding conductor (5) and the second pre-embedded grounding conductor (6). The groove is provided with a slot opening facing the lower cast-in-place column (2).
3. The lightning protection grounding structure for prefabricated buildings according to claim 1, characterized in that: The first pre-embedded grounding conductor (5) is connected to the connecting plate (4) and attached to the inner side of the concrete substrate, while the second pre-embedded grounding conductor (6) is connected to the connecting plate (4) and is located away from the outer side of the concrete substrate.
4. The lightning protection grounding structure for prefabricated buildings according to claim 1, characterized in that: The first pre-embedded grounding conductor (5) and the second pre-embedded grounding conductor (6) are welded to the main reinforcement (3) and the connecting plate (4).
5. The lightning protection grounding structure for prefabricated buildings according to claim 1, characterized in that: The number of the first pre-embedded grounding conductor (5) and the second pre-embedded grounding conductor (6) is at least two.
6. The lightning protection grounding structure for prefabricated buildings according to claim 1, characterized in that: The length of the first pre-embedded grounding conductor (5) and the second pre-embedded grounding conductor (6) welded to the main reinforcing bar (3) is not less than five times the diameter of the first pre-embedded grounding conductor (5) and the second pre-embedded grounding conductor (6). The length of the first pre-embedded grounding conductor (5) and the second pre-embedded grounding conductor (6) welded to the connecting plate (4) is not less than five times the diameter of the first pre-embedded grounding conductor (5) and the second pre-embedded grounding conductor (6).
7. The lightning protection grounding structure for prefabricated buildings according to claim 2, characterized in that: The groove can be filled with a layer of cement mortar flush with the concrete substrate.
8. The lightning protection grounding structure for prefabricated buildings according to claim 1, characterized in that: The first pre-embedded grounding conductor (5) and the second pre-embedded grounding conductor (6) are welded to the main reinforcement (3) and the connecting plate (4) on both sides.