Pre-embedded lightning protection device in fabricated building

Abstract

The utility model discloses a pre-embedded lightning protection device in an assembly type building, which comprises an upper prefabricated column and a lower prefabricated column which have the same structure and are in butt joint up and down, two main reinforcements are respectively arranged in the upper prefabricated column and the lower prefabricated column in a penetrating manner, galvanized steel plates positioned on one sides of the main reinforcements are respectively arranged at the tops and the bottoms of the main reinforcements, and the galvanized steel plates are connected with the upper prefabricated column and the lower prefabricated column. The connecting end of the galvanized steel sheet is welded with the main reinforcement, and the free end of the galvanized steel sheet deviates from the main reinforcement and is warped outwards and is not shorter than the end part of the main reinforcement; the ends of the upper prefabricated column and the lower prefabricated column are each provided with a notch used for exposing the free end of the galvanized steel plate, the free end of the galvanized steel plate at the bottom of the upper prefabricated column is connected with the free end of the galvanized steel plate at the top of the lower prefabricated column in a welded mode, and the notches are filled with mortar covering the galvanized steel plates which are connected in a welded mode. The main reinforcements in the upper prefabricated column and the lower prefabricated column can be well connected through the galvanized steel sheets, the function of a lightning protection downlead is achieved, the workload of a construction site is reduced, and the construction efficiency is improved.

Description

Technical Field

[0001] This utility model relates to the field of building lightning protection technology, specifically to a pre-embedded lightning protection device in prefabricated buildings. Background Technology

[0002] The lightning protection design of cast-in-place reinforced concrete structures usually uses the interconnected steel bars within the reinforced concrete structure as lightning protection grounding devices. However, in prefabricated concrete buildings, the production and assembly of prefabricated components cannot fully guarantee that the steel bars between the components form an electrical path.

[0003] In prefabricated concrete building structural systems, lateral connections between precast components are often achieved through on-site casting of post-cast strips or edge members, ensuring electrical continuity of the horizontal structural reinforcement between precast components. However, in prefabricated frame structures using precast columns, the upper and lower precast columns are connected by grouting sleeves, with the gaps filled with grout, resulting in a lack of continuous electrical path for the reinforcement within the precast columns. Therefore, as... Figure 1 As shown, if the main reinforcement bars inside the precast column are to be used as lightning protection down conductors 100, an additional connecting conductor 102 needs to be installed at the grouting sleeve 101 to electrically connect the main reinforcement bars inside the upper and lower columns.

[0004] The common practice now is to pre-embed a connecting plate 104 inside the precast column 103, and connect the main reinforcement bars inside the precast column 103 to the pre-embedded connecting plate 104 through an additional connecting conductor 102, and then cast it with concrete. After the upper and lower columns are connected on the construction site, the two pre-embedded connecting plates 104 are connected by laying an additional connecting conductor 105 on site, thereby forming a continuous electrical circuit.

[0005] The problem is:

[0006] ① The pre-embedded connecting plate 104 and the additional connecting conductor 102 are both pre-embedded in the precast column 103. They may break during the concrete pouring process and cannot be detected, causing safety hazards.

[0007] ②If the pre-embedded connecting plate 104 is not properly fixed, it is easy to be covered by concrete, which increases the difficulty of on-site construction;

[0008] ③ The on-site additional connecting conductor 105 is exposed, which affects the aesthetics and is easily damaged. Utility Model Content

[0009] The technical problem to be solved by this utility model is to provide a pre-embedded lightning protection device in prefabricated buildings, so as to solve the problems mentioned in the background art.

[0010] To solve the above-mentioned technical problems, the technical solution adopted by this utility model is as follows.

[0011] The pre-embedded lightning protection device in the fabricated building comprises an upper precast column and a lower precast column which are identical in structure and are butted together, and two main reinforcements are respectively arranged in the upper precast column and the lower precast column, wherein the top and bottom of the main reinforcement are respectively provided with a galvanized steel plate located on one side of the main reinforcement, the connecting end of the galvanized steel plate is welded to the main reinforcement, the free end of the galvanized steel plate is offset from the main reinforcement and is not shorter than the end of the main reinforcement, the end of the upper precast column and the end of the lower precast column are respectively provided with a notch for exposing the free end of the galvanized steel plate, the free end of the galvanized steel plate at the bottom of the upper precast column is welded to the free end of the galvanized steel plate at the top of the lower precast column, and the notch is filled with mortar covering the galvanized steel plate after welding.

[0012] Preferably, the device further comprises a special mold for isolating the free end of the galvanized steel plate outside during the pouring production process of the upper precast column and the lower precast column.

[0013] Preferably, the special mold comprises a mold base, a baffle for forming the notch is movably arranged on the mold base, and a groove for inserting the free end of the galvanized steel plate to isolate the free end of the galvanized steel plate outside is formed on the outer surface of the baffle away from the notch.

[0014] Preferably, the groove is processed with a slope corresponding to the free end of the galvanized steel plate to fit the free end of the galvanized steel plate.

[0015] Preferably, the bottom of the baffle is fixedly connected with a connecting piece, a threaded through hole is formed in the bottom of the connecting piece, and a bolt is connected in the threaded through hole; a plurality of threaded blind holes for connecting the bolt to realize the movable arrangement of the baffle on the mold base are formed on the mold base.

[0016] Thanks to the above technical scheme, the technical progress achieved by the utility model is as follows.

[0017] The galvanized steel plate can be used to connect the main reinforcements in the upper and lower precast columns, realize the function of lightning down conductor, reduce the workload of the construction site, and improve the construction efficiency.

[0018] ①The galvanized steel plate is used to form an electrical path, and the galvanized steel plate welded on the main reinforcement is not easy to fall off, thereby reducing hidden dangers;

[0019] ②There is no complex connection form, and the production process of the precast column is simplified;

[0020] ③After the connection is completed, the mortar is filled, there is no additional exposed wire, it is safer and more beautiful;

[0021] ④It can be regularly maintained, and the operation is simple. BRIEF DESCRIPTION OF DRAWINGS

[0022] Figure 1It is a schematic diagram of connecting existing prefabricated column interval down line;

[0023] Figure 2 It is a structural schematic diagram of the utility model;

[0024] Figure 3 It is a galvanized steel sheet and main reinforcement assembly schematic diagram of the utility model;

[0025] Figure 4 It is a special mold structure schematic diagram of the utility model;

[0026] Figure 5 It is a notched structure schematic diagram of the utility model.

[0027] 1. upper prefabricated column, 2. lower prefabricated column, 3. main reinforcement, 4. galvanized steel sheet, 5. slot, 6. special mold, 61. mold base, 62. connecting piece, 63. baffle, 64. groove, 65. slope, 66. threaded blind hole, 67. bolt, 100. lightning protection down lead, 101. grouting sleeve, 102. additional connecting conductor, 103. prefabricated column, 104. pre-buried connecting plate, 105. on-site additional connecting conductor. DETAILED DESCRIPTION

[0028] The utility model will be further explained in detail in combination with the drawings and specific embodiments.

[0029] A prefabricated building pre-buried lightning protection device, in combination Figures 2 to 3 As shown, it comprises upper prefabricated column 1 and lower prefabricated column 2, and the upper prefabricated column 1 and the lower prefabricated column 2 are identical in structure and are connected in an upper-lower manner, and meanwhile, two main reinforcements 3 are respectively arranged in the upper prefabricated column 1 and the lower prefabricated column 2.

[0030] The top and bottom of the main reinforcement 3 are respectively provided with a galvanized steel sheet 4, the galvanized steel sheet 4 is located on one side of the main reinforcement 3, and the connecting end of the galvanized steel sheet 4 is welded to the main reinforcement 3, so as to ensure that the galvanized steel sheet 4 is not easy to fall off and reduce hidden dangers; the free end of the galvanized steel sheet 4 is arranged to be outwardly inclined and is not shorter than the end of the main reinforcement 3. The end of the upper prefabricated column 1 and the lower prefabricated column 2 is respectively provided with a slot 5, the slot 5 is used for exposing the free end of the galvanized steel sheet 4, and the free end of the bottom galvanized steel sheet 4 of the upper prefabricated column 1 is welded to the free end of the top galvanized steel sheet 4 of the lower prefabricated column 2, so as to form an electrical path. The slot 5 is filled with mortar, so as to cover the galvanized steel sheet 4 after welding through the mortar, avoid the galvanized steel sheet 4 from being exposed, and ensure safety and beauty.

[0031] As Figure 4As shown, the device further comprises a special mold 6, which is arranged at both ends of the upper and lower precast columns 1 and 2 during the pouring production process of the upper and lower precast columns 1 and 2, and the free end of the galvanized steel plate 4 is isolated outside through the special mold 6, so as to ensure that the galvanized steel plate 4 is not covered by the concrete.

[0032] Specifically, the special mold 6 comprises a mold base 61, and a baffle 63 is movably arranged on the mold base 61, which is used to form the notch 5 during pouring. Figure 5 As shown, the groove 64 is machined with a slope 65, which is arranged in accordance with the free end of the galvanized steel plate 4, so as to be attached to the free end of the galvanized steel plate 4, and the groove 64 is used to insert the free end of the galvanized steel plate 4, so as to isolate the free end of the galvanized steel plate 4 outside.

[0033] The bottom of the baffle 63 is fixedly connected with a connecting piece 62, the bottom of the connecting piece 62 is provided with a threaded through hole, and the threaded through hole is connected with a bolt 67.

[0034] The upper and lower precast columns 1 and 2 of the utility model are not provided with complex connection forms during production, after the galvanized steel plate 4 is welded on the main reinforcement 3, the galvanized steel plate 4 is isolated outside during the pouring production process of the precast column by using the special mold 6, so as to ensure that the galvanized steel plate 4 is not covered by the concrete, and the production process is simplified.

[0035] In use, after the upper and lower precast columns 1 and 2 are installed, the galvanized steel plates 4 exposed outside the upper and lower precast columns 1 and 2 are welded and connected, the galvanized steel plates 4 are used to form an electrical path, the galvanized steel plates 4 welded on the main reinforcement 3 are not easy to fall off, and hidden dangers are reduced; after the connection is completed, the notch 5 is filled with filling mortar, there is no additional lead wire, and it is safer and more beautiful.

Claims

1. A lightning protection device embedded in a fabricated building, comprising an upper prefabricated column (1) and a lower prefabricated column (2) which are identical in structure and are butted together, two main reinforcement bars (3) are respectively arranged in the upper prefabricated column (1) and the lower prefabricated column (2), characterized in that: The top and bottom of the main reinforcement (3) are respectively provided with a galvanized steel plate (4) on one side of the main reinforcement (3), the connecting end of the galvanized steel plate (4) is welded to the main reinforcement (3), the free end of the galvanized steel plate (4) is offset from the outer side of the main reinforcement (3) and is not shorter than the end of the main reinforcement (3); the end of the upper precast column (1) and the lower precast column (2) is respectively provided with a notch (5) for exposing the free end of the galvanized steel plate (4), the free end of the bottom galvanized steel plate (4) of the upper precast column (1) is welded to the free end of the top galvanized steel plate (4) of the lower precast column (2), and the notch (5) is filled with mortar covering the galvanized steel plate (4) after welding.

2. The pre-embedded lightning protection device in a fabricated building according to claim 1, characterized in that: The device further comprises a special mold (6) for isolating the free end of the galvanized steel plate (4) outside during the pouring production process of the upper precast column (1) and the lower precast column (2).

3. The pre-embedded lightning protection device in a fabricated building according to claim 2, characterized in that: The special mold (6) comprises a mold base (61), and a baffle (63) for forming the notch (5) is movably arranged on the mold base (61), and a groove (64) for inserting the free end of the galvanized steel plate (4) to isolate the free end of the galvanized steel plate (4) outside is formed on the outer surface of the baffle (63) away from the notch (5).

4. The pre-embedded lightning protection device in a fabricated building according to claim 3, characterized in that: The groove (64) is machined with a slope (65) corresponding to the free end of the galvanized steel plate (4) to fit the free end of the galvanized steel plate (4).

5. The pre-embedded lightning protection device in a fabricated building according to claim 3, characterized in that: The bottom of the baffle (63) is fixedly connected with a connecting piece (62), a threaded hole is formed in the bottom of the connecting piece (62), a bolt (67) is connected in the threaded hole, and a plurality of threaded blind holes (66) are formed on the mold base (61) for connecting the bolt (67) to realize the movable arrangement of the baffle (63) on the mold base (61).

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