Anti-seismic support downlead and downlead connecting structure

Abstract

An anti-seismic support downlead comprises a piece of galvanized round steel (1) and two pieces of galvanized flat steel (2), the middle section of the galvanized round steel (1) is bent into a stretchable spring shape, and the two pieces of galvanized flat steel (2) are welded to the top end and the bottom end of the galvanized round steel (1) respectively. The anti-seismic support downlead connecting structure comprises an anti-seismic support downlead, galvanized flat steel (2) on the upper portion of the anti-seismic support downlead is welded and fixed to an upper column pier connecting lead (31), and galvanized flat steel (2) on the lower portion of the anti-seismic support downlead is welded and fixed to a lower column pier connecting lead (51). Compared with a conventional downlead method, the vertical downlead line is disconnected at the anti-seismic support, and the flat steel is led out from the upper column pier and the lower column pier and is reserved on the surface of the column, so that the downlead is effectively prevented from being damaged by amplitude caused by an earthquake.

Description

Technical Field

[0001] The utility model belongs to the field of building engineering construction, and in particular provides a seismic support down conductor and a down conductor connection structure. Background Art

[0002] When making lightning protection grounding down conductors, the main reinforcement of the building's columns is often used as the vertical down conductor. However, in buildings with earthquake resistance requirements, earthquake-resistant supports are set in the middle of the columns, which cuts off the continuity of the down conductor. Therefore, it is necessary to connect the upper and lower column piers with galvanized flat iron or round steel at the support. Ordinary galvanized flat iron or round steel has strong rigidity and cannot effectively resist the displacement in all directions of the horizontal plane caused by earthquakes. Therefore, it is our need to develop a new method for connecting down conductors with earthquake-resistant supports.

[0003] The use of a new method for connecting down conductors for seismic isolation bearings solves the problem of making lightning protection grounding down conductors at the seismic isolation bearings in the construction industry, filling the gap in the industry. However, there are also some problems in the production and installation of special down conductors on site: first, it is difficult to make stretchable spring-shaped galvanized round steel. There is no available machine for the spring shape in the middle of the round steel, which needs to be bent manually. The φ12mm round steel has a high strength and is difficult to bend into shape. The distance between the spring coils is difficult to control manually. Second, the height of the seismic isolation layer is low, the construction space is small, and it is difficult for workers to construct. Third, the mezzanine space is relatively closed, the air circulation is poor, and the smoke generated by welding operations cannot be quickly discharged. Utility Model Content

[0004] The utility model aims to provide a seismic bearing down conductor and a down conductor connection structure to solve the problems existing in the background technology.

[0005] The technical solution of the utility model is as follows:

[0006] A seismic bearing down conductor comprises a galvanized round steel 1 and two galvanized flat steels 2. The middle section of the galvanized round steel 1 is bent into a stretchable spring shape. The two galvanized flat steels 2 are welded to the top and bottom ends of the galvanized round steel 1 respectively.

[0007] A seismic bearing downlead connection structure includes a seismic bearing downlead, an upper column pier 3, an upper column pier connecting lead 31, a seismic bearing 4, a lower column pier 5 and a lower column pier connecting lead 51; the upper column pier connecting lead 31 is pre-buried in the upper column pier 3 and extends downward, the lower column pier connecting lead 51 is pre-buried in the lower column pier 5 and extends upward, and the seismic bearing 4 is installed between the upper column pier 3 and the lower column pier 5 by bolts; wherein: the upper galvanized flat steel 2 of the seismic bearing downlead is welded and fixed to the upper column pier connecting lead 31, and the lower galvanized flat steel 2 is welded and fixed to the lower column pier connecting lead 51.

[0008] Preferably, the specification of the galvanized round steel 1 is galvanized round steel; the length of the galvanized round steel 1 between the two galvanized flat steels 2 is 460mm.

[0009] Preferably, the specification of the galvanized flat steel 2 is 200 mm in length*40 mm in width*4 mm in thickness.

[0010] The beneficial effects of the utility model are:

[0011] Compared with the conventional down conductor method, the utility model disconnects the vertical down conductor line at the anti-seismic support position and leads out flat steel from the upper and lower column piers and leaves it on the column surface, effectively preventing the damage to the down conductor caused by the amplitude of the earthquake.

[0012] Compared with conventional down conductors, the connection of the upper and lower reserved flat steels of the utility model uses a stretchable spring-shaped galvanized round steel 1, which can resist displacement from all directions of the horizontal plane during an earthquake and ensure the integrity of the down conductor.

[0013] From the force analysis, the utility model can resist the forces in all directions on the horizontal plane caused by earthquakes.

[0014] From the perspective of construction technology, the utility model can ensure the integrity of the lightning protection grounding system while taking into account the earthquake resistance requirements. The production of the stretchable spring-shaped galvanized round steel 1 solves the problem that the lightning protection grounding down conductor cannot be connected at the earthquake-resistant support, and provides a precedent for similar projects.

[0015] From the perspective of economic benefits, the utility model uses conventional materials, the required parts are completely homemade, and the installation is simple, which saves the project special parts processing fees, material costs, and labor costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a front structural schematic diagram of the seismic support down conductor of the utility model;

[0017] Figure 2 It is a side structural schematic diagram of the seismic support down conductor of the utility model;

[0018] Figure 3 It is a front structural schematic diagram of the seismic support down conductor connection structure of the utility model;

[0019] Figure 4 It is a side structural schematic diagram of the seismic support down conductor connection structure of the utility model;

[0020] Figure 5 It is a three-dimensional structural schematic diagram of the seismic support down conductor connection structure of the utility model.

[0021] Serial numbers in the figure: galvanized round steel 1, galvanized flat steel 2, upper column pier 3, upper column pier connecting lead 31, seismic bearing 4, lower column pier 5 and lower column pier connecting lead 51. DETAILED DESCRIPTION

[0022] Example 1

[0023] A seismic bearing down conductor comprises a galvanized round steel 1 and two galvanized flat steels 2. The middle section of the galvanized round steel 1 is bent into a stretchable spring shape. The two galvanized flat steels 2 are welded to the top and bottom ends of the galvanized round steel 1 respectively.

[0024] Preferably, the specification of the galvanized round steel 1 is galvanized round steel; the length of the galvanized round steel 1 between the two galvanized flat steels 2 is 460mm.

[0025] Preferably, the specification of the galvanized flat steel 2 is 200 mm in length*40 mm in width*4 mm in thickness.

[0026] A method for making a seismic bearing down conductor:

[0027] It includes two 40×4 galvanized flat steels 2, φ12 stretchable spring-shaped galvanized round steel 1, anti-corrosion paint, and silver powder paint. Two pre-buried 40×4 galvanized flat steels 2 are connected to the main bars of the upper and lower columns and extend out of the column surface, respectively bent toward the seismic support. The bent galvanized flat steels 2 are parallel to the column surface and 2 cm away from the column surface. The specific size can be slightly adjusted according to the on-site construction conditions.

[0028] The two galvanized flat steels 2 are connected in the middle with a φ12 stretchable spring-shaped galvanized round steel 1. The stretchable spring-shaped galvanized round steel 1 is made of a homemade galvanized round steel 1 bending tool. The production process ensures that the spring coil layer is regular and without deformation. There are 5 coils in the middle section, each coil has a diameter of 100mm, and the coil interval is 50mm. The round steel spring-shaped section is 260mm long in total, and the vertical sections of galvanized round steel 1 extending on both sides of the spring are 265mm long. The vertical sections of galvanized round steel 1 are overlapped and welded with the reserved galvanized flat steel 2. The welding length should be greater than 6DD, which is the diameter of the φ12 round steel. The actual welding length is 100mm.

[0029] Example 2

[0030] A seismic bearing downlead connection structure includes a seismic bearing downlead, an upper column pier 3, an upper column pier connecting lead 31, a seismic bearing 4, a lower column pier 5 and a lower column pier connecting lead 51; the upper column pier connecting lead 31 is pre-buried in the upper column pier 3 and extends downward, the lower column pier connecting lead 51 is pre-buried in the lower column pier 5 and extends upward, and the seismic bearing 4 is installed between the upper column pier 3 and the lower column pier 5 by bolts; wherein: the upper galvanized flat steel 2 of the seismic bearing downlead is welded and fixed to the upper column pier connecting lead 31, and the lower galvanized flat steel 2 is welded and fixed to the lower column pier connecting lead 51.

[0031] The center of the middle spring section of the stretchable spring-shaped galvanized round steel 1 is flush with the center of the seismic bearing. In the absence of an earthquake, the spring-shaped down conductor remains vertical; in the earthquake state, the upper and lower piers form a horizontal plane deviation while pulling the galvanized stretchable spring-shaped galvanized round steel 1; after the earthquake, the stretchable spring-shaped galvanized round steel 1 returns to its original state.

[0032] The reserved galvanized flat steel 2 is welded from the main reinforcement of the upper and lower piers, and the part extending out of the column surface is bent upward and downward respectively, close to the column surface, and 20mm away from the column surface.

[0033] The length of the welding part is 100mm, and double-sided welding is used. After welding, anti-corrosion paint is applied first and then silver powder paint.

[0034] During the construction of a seismic support down conductor connection structure, if the air circulation in the seismic isolation interlayer is poor, ventilation measures must be taken, and construction can only be carried out after air inspection. The verticality of the tensile spring-shaped galvanized round steel 1 should be strictly controlled, and the skewed and inclined galvanized flat steel 2 should be corrected in advance to ensure that the upper and lower galvanized flat steels 2 are aligned in the vertical direction. Strictly control the welding quality, and the welding length must reach 100mm. After installation, clean the welding slag from the welding parts, perform anti-corrosion treatment, and spray silver powder paint.

[0035] In summary, Example 1 and Example 2:

[0036] Conventional down conductor grounding methods cannot be used in traditional seismic bearings. The down conductor grounding method of the utility model must meet the displacement in all directions of the horizontal plane caused by earthquakes. The prefabricated stretchable spring-shaped galvanized round steel 1 can ensure the stability of the functional properties of the down conductor during an earthquake, and can effectively resist the displacement of the down conductor in all directions in the horizontal plane during an earthquake.

[0037] Compared with the conventional grounding down conductor method, the utility model method requires that the galvanized flat steel 2 is led out from the main reinforcement of the upper column pier, connected to the prefabricated tensile spring-shaped galvanized round steel 1, and then introduced into the lower column pier through the galvanized flat iron.

[0038] The utility model replaces the original method of using vertical main reinforcement of columns to lead down the down conductor at special locations, thereby increasing the seismic resistance of the down conductor.

[0039] The above embodiments are only for illustrating the technical concept and features of the utility model, and their purpose is to enable people familiar with the technology to understand the content of the utility model and implement it accordingly, and they cannot be used to limit the protection scope of the utility model. Any equivalent changes or modifications made according to the spirit of the utility model should be included in the protection scope of the utility model.

[0040] The above detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention but merely represents selected embodiments of the present invention.

Claims

1. A seismic bearing down conductor, characterized in that: It comprises a galvanized round steel (1) and two galvanized flat steels (2), wherein the middle section of the galvanized round steel (1) is bent into a stretchable spring shape, and the two galvanized flat steels (2) are respectively welded to the top and bottom ends of the galvanized round steel (1).

2. The seismic bearing down conductor according to claim 1, characterized in that: The specifications of the galvanized round steel (1) are The length of the galvanized round steel (1) between the two galvanized flat steels (2) is 460 mm.

3. The seismic bearing down conductor according to claim 1, characterized in that: The specification of the galvanized flat steel (2) is 200 mm in length*40 mm in width*4 mm in thickness.

4. A seismic bearing down conductor connection structure, characterized in that: It comprises the seismic bearing down conductor as described in any one of claims 1 to 3, and also comprises an upper column pier (3), an upper column pier connecting lead (31), a seismic bearing (4), a lower column pier (5) and a lower column pier connecting lead (51); the upper column pier connecting lead (31) is pre-buried in the upper column pier (3) and extends downward, the lower column pier connecting lead (51) is pre-buried in the lower column pier (5) and extends upward, and the seismic bearing (4) is installed between the upper column pier (3) and the lower column pier (5) by bolts; wherein: the upper galvanized flat steel (2) of the seismic bearing down conductor is welded and fixed to the upper column pier connecting lead (31), and the lower galvanized flat steel (2) is welded and fixed to the lower column pier connecting lead (51).

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