Grouting sleeve prefabricated column lightning protection grounding node device

Abstract

The invention provides a grouting sleeve prefabricated column lightning protection grounding node device, and relates to the field of building lightning protection construction. The grouting sleeve prefabricated column lightning protection grounding node device comprises a pre-buried galvanized grounding connecting plate, two first galvanized round steel bars and two second galvanized round steel bars, the pre-buried galvanized grounding connecting plate is installed on the flat ground in a pre-buried mode, and a plurality of grouting sleeves are installed at the upper end of the pre-buried galvanized grounding connecting plate in a rectangular arrangement mode. Upper prefabricated pile main reinforcements penetrate through the upper ends of the grouting sleeves, a plurality of lower prefabricated pile main reinforcements are installed in the flat ground in an embedded mode, and two pieces of first galvanized round steel are subjected to double-face pasting and welding 6D combination on the bottom positions of the upper prefabricated pile main reinforcements at the two diagonal positions of the multiple upper prefabricated pile main reinforcements. According to the invention, aiming at the variable cross-section condition of the interlayer prefabricated column, the position of the column angle rib is converted, and the lightning protection grounding node device also can form reliable electrical connection between the column angle ribs after position conversion.

Description

Technical Field

[0001] The invention relates to the field of building lightning protection construction, in particular to a grouting sleeve prefabricated column lightning protection grounding node device. Background Art

[0002] With the continuous development and improvement of prefabricated technology in recent years, more and more projects are constantly impacting and challenging higher assembly rates. Prefabricated components have also developed from horizontal components to horizontal components plus vertical enclosure components, and then to horizontal components plus vertical enclosure components plus vertical load-bearing components. However, with the continuous increase in components, the difficulty of construction increases accordingly. In some high-rise, high-assembly-rate projects, whether it is a shear wall structure or a frame shear wall structure, in order to achieve a higher assembly rate, the vertical load-bearing structure around the building must be deepened into prefabricated components, and only a small part of the cast-in-place structure is retained in the core tube area. In the lightning protection design drawings, the lightning protection down conductor is usually set at the four corners of the building and on the outer column reinforcement. Therefore, prefabricated buildings need to reserve lead wires and terminal boards on the prefabricated components where the lightning protection down conductor is designed. After the components are hoisted, the lead wires and terminal boards are welded to ensure the continuity and effectiveness of the lightning protection down conductor.

[0003] However, the upper and lower main reinforcements of the traditional grouting sleeve prefabricated column are connected by grouting sleeves, and there is a local grouting material connection at the connection position. Most of the practices are to set reserved steel bars in specific parts of the prefabricated components, and then weld the reserved steel bars after the installation is completed. This operation is relatively troublesome and has a high failure rate. Moreover, the existing sleeves that can play a role in lightning protection and grounding are mostly placed inside the sleeves for conducting electricity. In the specific assembly and construction process, the construction personnel cannot ensure that the conductive connectors can definitely connect the lower steel bars with the sleeve and other structures, and it is impossible to ensure that the two must form a stable conductive path. There are unknown hidden dangers, and thus a closed electrical path connection cannot be formed. Summary of the invention

[0004] (I) Technical solution

[0005] In order to solve the above technical problems, the present invention is implemented through the following technical solutions: a grouting sleeve prefabricated column lightning protection grounding node device, comprising a pre-buried galvanized grounding connection plate, two No. 1 galvanized round steels and two No. 2 galvanized round steels, the pre-buried galvanized grounding connection plate is pre-buried and installed on a flat ground, the upper end of the pre-buried galvanized grounding connection plate is arranged in a rectangular shape and a plurality of grouting sleeves are installed, the upper ends of the plurality of grouting sleeves are penetrated with upper prefabricated pile main bars, and the flat ground is pre-buried and installed with a plurality of grouting sleeves. The main reinforcement of the lower precast piles, the bottom positions of the upper precast pile main reinforcements at two diagonal positions among the multiple upper precast pile main reinforcements are respectively composed of two No. 1 galvanized round steels double-sided welded 6D combinations, the top positions of the lower precast pile main reinforcements at two diagonal positions among the multiple lower precast pile main reinforcements are respectively composed of two No. 2 galvanized round steels double-sided welded 60mm long combinations, the two No. 1 galvanized round steels and No. 2 galvanized round steels are located at one end of the embedded galvanized grounding connecting plate and are combined by double-sided welding 6D.

[0006] Preferably, the interior of the grouting sleeve is a cavity, the upper end of the grouting sleeve is provided with an upper opening for inserting the main reinforcement of the upper precast pile, a sealing rubber ring is provided at the upper opening, and the lower end of the grouting sleeve is provided with a lower opening for inserting the main reinforcement of the lower precast pile.

[0007] Preferably, two No. 1 galvanized round steels formed by double-sided 6D welding are fixedly arranged on the outer wall of the grouting sleeve, and one end of the No. 1 galvanized round steel is connected and fixed to the main reinforcement of the upper precast pile.

[0008] Preferably, the welding length between the No. 1 galvanized round steel and the main reinforcement of the upper precast pile is 60 mm, and the length of one end of the No. 1 galvanized round steel close to the main reinforcement of the upper precast pile is 100 mm. The welding length between the No. 2 galvanized round steel and the main reinforcement of the lower precast pile is 60 mm, and the length of one end of the No. 2 galvanized round steel close to the main reinforcement of the lower precast pile is 100 mm.

[0009] Preferably, the pre-embedded galvanized grounding connecting plate is a connecting plate with a length and width of 100mm*100mm and a thickness of 6mm. The length of one end of the No. 1 galvanized round steel and the No. 2 galvanized round steel close to the pre-embedded galvanized grounding connecting plate is 400mm and the length of the welding surface with the pre-embedded galvanized grounding connecting plate is 60mm.

[0010] Preferably, two embedded main bars are installed on one side of two lower precast pile main bars located at diagonal positions of the plurality of lower precast pile main bars inside the flat ground, and No. 2 galvanized round steel is welded to the outer walls of the two embedded main bars.

[0011] Preferably, the No. 1 galvanized round steel includes a straight steel edge, a slanted steel edge is arranged at the lower end of the straight steel edge, a straight edge is arranged at one end of the slanted steel edge away from the straight steel edge, and a reserved folded steel edge is arranged on the side of the straight edge away from the slanted steel edge.

[0012] Preferably, round steel openings are provided at the front and rear ends of one side of the upper end surface of the embedded galvanized grounding connection plate.

[0013] Working principle: At the bottom of the two diagonal main bars of the upper precast pile main bars, two No. 1 galvanized round steels are welded 6D on both sides, and then at the top of the two diagonal main bars at the corresponding positions of the lower precast pile main bars, two No. 2 galvanized round steels are welded 60mm in length on both sides, and finally, at the interlayer structural surface between the upper precast pile main bars and the lower precast pile main bars, the pre-buried galvanized grounding connection plate is used to weld the No. 1 galvanized round steel and the No. 2 galvanized round steel on both sides 6D, and finally a closed electrical connection is formed, which is in accordance with the electrical design specifications and meets the allowable range of the grounding resistance value.

[0014] (II) Beneficial effects

[0015] The present invention provides a grouting sleeve prefabricated column lightning protection grounding node device. It has the following beneficial effects:

[0016] The present invention provides a lightning protection grounding node device for a grouting sleeve prefabricated column, which solves the problem that the upper and lower main reinforcements of a traditional grouting sleeve prefabricated column are connected by grouting sleeves, and the connection position has a local grouting material connection, so that a closed electrical path connection cannot be formed; the present invention can form a reliable electrical connection between the interlayer sleeve main reinforcements through this lightning protection grounding node device, and meet the allowable range of grounding resistance. In view of the variable cross-section of the interlayer prefabricated column, the column corner reinforcement undergoes position conversion, and this lightning protection grounding node device can also form a reliable electrical connection between the column corner reinforcements after the position conversion. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a structural schematic diagram of a non-variable cross-section column for column lightning protection of the present invention;

[0018] Figure 2 It is a schematic diagram of a variable cross-section column for column lightning protection of the present invention;

[0019] Figure 3 It is a schematic structural diagram of No. 1 galvanized round steel and No. 2 galvanized round steel of the present invention;

[0020] Figure 4 It is a schematic diagram of the top structure of the present invention.

[0021] Among them, 1. Main reinforcement of upper precast pile; 2. No. 1 galvanized round steel; 3. Embedded galvanized grounding connection plate; 4. No. 2 galvanized round steel; 5. Grouting sleeve; 6. Flat ground; 7. Embedded main reinforcement; 8. Round steel opening; 201. Close to straight steel edge; 202. Reserved folded steel edge. DETAILED DESCRIPTION

[0022] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0023] Example:

[0024] like Figure 1-4 As shown, an embodiment of the present invention provides a grouting sleeve prefabricated column lightning protection grounding node device, including a pre-buried galvanized grounding connection plate 3, two No. 1 galvanized round steels 2 and two No. 2 galvanized round steels 4, the pre-buried galvanized grounding connection plate 3 is pre-buried and installed on a flat ground 6, and a plurality of grouting sleeves 5 are arranged in a rectangular shape on the upper end of the pre-buried galvanized grounding connection plate 3, and upper prefabricated pile main reinforcements 1 are penetrated at the upper ends of the plurality of grouting sleeves 5, and a plurality of lower prefabricated pile main reinforcements 9 are pre-buried and installed in the flat ground 6 The bottom positions of the upper precast pile main reinforcements 1 at two diagonal positions among the multiple upper precast pile main reinforcements 1 are respectively combined by double-sided welding of two No. 1 galvanized round steels 2 in 6D length, and the top positions of the lower precast pile main reinforcements 9 at two diagonal positions among the multiple lower precast pile main reinforcements 9 are respectively combined by double-sided welding of two No. 2 galvanized round steels 4 in 60mm length, and the two No. 1 galvanized round steels 2 and No. 2 galvanized round steels 4 are located at one end of the embedded galvanized grounding connecting plate 3 and are combined by double-sided welding of 6D.

[0025] Specifically: the welding length of No. 1 galvanized round steel 2 and the upper precast pile main reinforcement 1 is 60mm, the length of the end of No. 1 galvanized round steel 2 close to the upper precast pile main reinforcement 1 is 100mm, the welding length of No. 2 galvanized round steel 4 and the lower precast pile main reinforcement 9 is 60mm, the length of the end of No. 2 galvanized round steel 4 close to the lower precast pile main reinforcement 9 is 100mm; the embedded galvanized grounding connecting plate 3 is a connecting plate with a length and width of 100mm*100mm and a thickness of 6mm, the No. 1 galvanized round steel 2 and The length of the second galvanized round steel 4 near the embedded galvanized grounding connection plate 3 is 400mm and the length of the welding surface with the embedded galvanized grounding connection plate 3 is 60mm; the first galvanized round steel 2 includes a straight steel edge 201, an inclined steel edge is arranged at the lower end of the straight steel edge 201, and a straight edge is arranged at the end of the inclined steel edge away from the straight steel edge 201, and a reserved folded steel edge 202 is arranged on the side of the straight edge away from the inclined steel edge; round steel openings 8 are opened at the front and rear ends of one side of the upper end surface of the embedded galvanized grounding connection plate 3;

[0026] The installation steps of the lightning protection grounding node device include:

[0027] Step 1. During the reinforcement binding process of the lower precast pile main reinforcement 9, it is necessary to confirm in advance the two groups of upper precast pile main reinforcement 1 at the corresponding position of the upper layer. The double-sided welding length of each group of column corner main reinforcement and the 100mm bending section of two galvanized round steels should not be less than 60mm. It is necessary to ensure that the 400mm bending section of the galvanized round steel is exposed above the elevation of the upper structure and thrown out of the column cross section to ensure that the galvanized round steel is welded and connected at the adjacent position later.

[0028] Step 2. During the processing of the prefabricated column in the factory, confirm in advance the two column corner main reinforcements corresponding to the lower layer. Each set of column corner main reinforcements is double-sidedly welded to two 100mm bending sections of galvanized round steel with a length of not less than 60mm. Figure 4 As shown, it is necessary to ensure that the 400mm bending section of the galvanized round steel leaks out of the mold retaining edge at the bottom of the prefabricated column and is thrown out of the column section to ensure that the No. 1 galvanized round steel 2 and the No. 2 galvanized round steel 4 are welded and connected in adjacent positions later.

[0029] Step 3. After the lower precast pile main reinforcement 9 is poured, the upper precast pile main reinforcement 1 is hoisted, and the precast column seat grouting and sleeve grouting are all installed, the pre-buried galvanized grounding connection plate 3 is combined with the No. 1 galvanized round steel 2 and the No. 2 galvanized round steel 4 with a double-sided welding length of 60mm to finally form a closed electrical connection, such as Figure 1 shown.

[0030] Step 4. If the upper layer is a variable-section prefabricated column, it is necessary to select two groups of column corner main bars adjacent to the upper and lower main bars in advance as grounding main bars, and perform steps 1 and 2. When hoisting the upper prefabricated column, it is necessary to position the upper prefabricated pile main bar 1 of the No. 1 galvanized round steel 2 corresponding to the embedded main bar 7 of the No. 2 galvanized round steel 4 of the lower layer for installation. The prefabricated column seat grouting and sleeve grouting are all completed, and then the embedded galvanized grounding connecting plate 3 is combined with the No. 1 galvanized round steel 2 and the No. 2 galvanized round steel 4 with a double-sided welding length of 60mm to finally form a closed electrical connection, such as Figure 2 As shown;

[0031] Reference Figure 1-Figure 2 The interior of the grouting sleeve 5 is a cavity, the upper end of the grouting sleeve 5 is provided with an upper end opening for inserting the upper precast pile main reinforcement 1, a sealing rubber ring is provided at the upper end opening, the lower end of the grouting sleeve 5 is provided with a lower end opening for inserting the lower precast pile main reinforcement 9, two double-sided welded 6D combined No. 1 galvanized round steels 2 are fixedly arranged on the outer wall of the grouting sleeve 5, and one end of the No. 1 galvanized round steel 2 is connected and fixed to the upper precast pile main reinforcement 1;

[0032] Specifically, openings are provided at the upper and lower ends of the grouting sleeve 5 and the interior is set as a cavity, which can meet the requirements of inserting and installing the upper precast pile main reinforcement 1 and the lower precast pile main reinforcement 9, and complete the casting and fixing for use at the same time.

[0033] Reference Figure 2 Two pre-buried main bars 7 are installed on one side of two lower prefabricated pile main bars 9 located at diagonal positions of the plurality of lower prefabricated pile main bars 9 inside the flat ground 6, and the outer walls of the two pre-buried main bars 7 are welded with No. 2 galvanized round steel 4;

[0034] Specifically, when the upper layer is a prefabricated column with a variable cross-section, it is necessary to select two groups of column corner main bars in the upper layer adjacent to the embedded main bars 7 as grounding main bars in advance, and finally form a closed electrical connection according to the electrical design specifications and meet the allowable range of the grounding resistance value.

[0035] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A grouting sleeve prefabricated column lightning protection grounding node device, comprising a pre-buried galvanized grounding connection plate (3), two No. 1 galvanized round steels (2) and two No. 2 galvanized round steels (4), characterized in that: The embedded galvanized grounding connection plate (3) is embedded and installed on the flat ground (6). The upper end of the embedded galvanized grounding connection plate (3) is equipped with a plurality of grouting sleeves (5) arranged in a rectangular shape. The upper ends of the plurality of grouting sleeves (5) are all penetrated with upper precast pile main bars (1). The flat ground (6) is embedded and installed with a plurality of lower precast pile main bars (9). The bottom positions of the upper precast pile main bars (1) at two diagonal positions of the plurality of upper precast pile main bars (1) are respectively combined by double-sided welding of two No. 1 galvanized round steels (2) with a length of 60 mm. The top positions of the lower precast pile main bars (9) at two diagonal positions of the plurality of lower precast pile main bars (9) are respectively combined by double-sided welding of two No. 2 galvanized round steels (4) with a length of 60 mm. The two No. 1 galvanized round steels (2) and the No. 2 galvanized round steels (4) are located at one end of the embedded galvanized grounding connection plate (3) and are combined by double-sided welding of 6D.

2. A grouting sleeve prefabricated column lightning protection grounding node device according to claim 1, characterized in that: The interior of the grouting sleeve (5) is a hollow cavity. The upper end of the grouting sleeve (5) is provided with an upper end opening for inserting the upper precast pile main reinforcement (1). A sealing rubber ring is provided at the upper end opening. The lower end of the grouting sleeve (5) is provided with a lower end opening for inserting the lower precast pile main reinforcement (9).

3. A grouting sleeve prefabricated column lightning protection grounding node device according to claim 1, characterized in that: The two No. 1 galvanized round steels (2) formed by double-sided 6D welding are fixedly arranged on the outer wall of the grouting sleeve (5), and one end of the No. 1 galvanized round steel (2) is connected and fixed to the upper prefabricated pile main reinforcement (1).

4. A grouting sleeve prefabricated column lightning protection grounding node device according to claim 1, characterized in that: The welding length between the No. 1 galvanized round steel (2) and the upper precast pile main reinforcement (1) is 60 mm, and the length of one end of the No. 1 galvanized round steel (2) close to the upper precast pile main reinforcement (1) is 100 mm. The welding length between the No. 2 galvanized round steel (4) and the lower precast pile main reinforcement (9) is 60 mm, and the length of one end of the No. 2 galvanized round steel (4) close to the lower precast pile main reinforcement (9) is 100 mm.

5. A grouting sleeve prefabricated column lightning protection grounding node device according to claim 1, characterized in that: The embedded galvanized grounding connection plate (3) is a connection plate with a length and width of 100mm*100mm and a thickness of 6mm. The length of one end of the No. 1 galvanized round steel (2) and the No. 2 galvanized round steel (4) close to the embedded galvanized grounding connection plate (3) is 400mm, and the length of the welding surface with the embedded galvanized grounding connection plate (3) is 60mm.

6. A grouting sleeve prefabricated column lightning protection grounding node device according to claim 1, characterized in that: Two pre-buried main reinforcements (7) are installed on one side of two lower precast pile main reinforcements (9) located at diagonal positions of the plurality of lower precast pile main reinforcements (9) inside the flat ground (6), and No. 2 galvanized round steel (4) is welded to the outer walls of the two pre-buried main reinforcements (7).

7. A grouting sleeve prefabricated column lightning protection grounding node device according to claim 1, characterized in that: The No. 1 galvanized round steel (2) comprises a close-fitting straight steel edge (201), a slanted steel edge is arranged at the lower end of the close-fitting straight steel edge (201), and a straight edge is arranged at one end of the slanted steel edge away from the close-fitting straight steel edge (201), and a reserved folded steel edge (202) is arranged on the side of the straight edge away from the slanted steel edge.

8. The grouting sleeve prefabricated column lightning protection grounding node device according to claim 1, characterized in that: Round steel openings (8) are provided at the front and rear ends of one side of the upper end surface of the pre-buried galvanized grounding connection plate (3).

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