Hard connection lightning protection construction method for shock insulation

Abstract

This invention provides a rigid connection lightning protection construction method for seismic isolation, belonging to the field of building construction technology. The method includes the following steps: welding a pre-reserved lightning protection flat steel bar inside the upper concrete structure of the seismic isolation layer to a 20mm diameter round steel bar; marking the lower concrete floor slab according to measured length values; welding a 500mm diameter circular steel plate to the lightning protection flat steel bar inside the lower concrete structure at the marked points; welding and fixing a 50mm diameter circular steel plate along its upper end face to install the lower lightning protection round steel bar; installing and fixing the top of the lower lightning protection round steel bar to the upper lightning protection round steel bar using a high-strength spring and steel sleeve; and fixing a spare current shunt component to the upper and lower sides of the lightning protection connection assembly. This invention allows the lightning protection connection to be displaced, and the connection is firm, ensuring the reliability of the lightning protection connection during seismic displacement.

Description

Technical Field

[0001] This invention belongs to the field of building construction technology, and specifically relates to a method for constructing a rigid connection lightning protection system for seismic isolation. Background Technology

[0002] Lightning can impact the environment by causing fires, explosions, and other hazards. For example, in hazardous locations such as petrochemical plants, lightning strikes can trigger explosions, seriously endangering the environment and human safety. Proper lightning protection grounding can effectively prevent such incidents and protect the environment.

[0003] Currently, major hospitals and public building projects have vigorously promoted the design type of seismic isolation buildings. In seismic isolation buildings, the upper and lower floors are connected and fixed by seismic isolation bearings, and the upper structure will displace during an earthquake. This has a great impact on the lightning protection process, which requires a continuous connection from top to bottom. Therefore, a construction method is needed that can make corresponding movements to accommodate the displacement of the structure and ensure the continuity of the lightning protection connection from beginning to end. Summary of the Invention

[0004] When floors in a seismically isolated building are connected by seismic isolation bearings and experience displacement due to an earthquake, how can the reliability and effectiveness of the lightning protection connection be guaranteed? To address this, a rigid connection lightning protection construction method for seismic isolation is provided. This method allows the lightning protection connection to also be displaced, and the connection remains firm, ensuring the reliability of the lightning protection connection during seismic displacement.

[0005] This invention is implemented as follows:

[0006] This invention provides a method for constructing a rigid connection lightning protection system for seismic isolation, comprising the following steps:

[0007] S01: Weld the pre-reserved lightning protection flat steel inside the upper concrete structure of the building's seismic isolation layer to a 20mm diameter round steel to obtain the upper lightning protection round steel.

[0008] S02: Measure the distance between the upper lightning protection round steel and the upper concrete structure of the building's seismic isolation layer to obtain the length value;

[0009] S03: Mark the lower concrete structural floor slab according to the measured length values ​​to obtain the marked points;

[0010] S04: At the marked point, a circular steel plate with a diameter of 500mm is welded and fixed to the lightning protection flat steel inside the lower concrete structure to obtain the lower lightning protection steel plate.

[0011] S05: Place a 50mm diameter circular steel plate along the axis of the lower lightning protection steel plate;

[0012] S06: Weld and fix the lower lightning protection round steel plate along the upper end face of the 50mm diameter circular steel plate;

[0013] S07: The top of the lower lightning protection round steel is installed and fixed to the upper lightning protection round steel through a high-strength spring and a steel sleeve to obtain the lightning protection connection assembly;

[0014] S08: Securely install the spare current shunt assembly on the upper and lower sides of the lightning protection connection assembly.

[0015] Based on the above technical solution, the rigid connection lightning protection construction method for seismic isolation of the present invention can be further improved as follows:

[0016] The specific steps for welding the pre-reserved lightning protection flat steel inside the upper concrete structure of the building's seismic isolation layer to a 20mm diameter round steel to obtain the upper lightning protection round steel are as follows:

[0017] The lightning protection flat steel reserved inside the upper concrete structure is bent with a hand hammer so that the bending angle is not less than 90°. A 20mm diameter round steel is fixed on the clamp so that the upper end of the 20mm diameter round steel is aligned with the bottom end of the bent part of the lightning protection flat steel reserved inside the upper concrete structure. The two ends are welded and fixed by an arc welding machine to obtain the upper lightning protection round steel.

[0018] The specific steps for measuring the distance between the upper lightning protection round steel and the upper concrete structure of the building's seismic isolation layer to obtain the length value are as follows:

[0019] The outer centerline of the upper concrete structure of the seismic isolation layer is set as the measurement benchmark. A laser measuring instrument is used to measure the distance between the bottom centerline of the upper lightning protection round steel and the benchmark point that extends vertically downward from the outer centerline of the upper concrete structure of the seismic isolation layer at the same level. The flatness of the welds at both ends is measured. The deviation value of the straight section shall not be greater than 0.003. The length value displayed on the laser measuring instrument is read.

[0020] The specific steps for marking the lower concrete floor slab based on the measured length to obtain the marked points are as follows:

[0021] Based on the measured length values, lines are drawn on the lower concrete structural floor slab, and the intersection of the drawn line length with the center axis of the upper end face of the lower concrete structural floor slab is marked to obtain the marked points.

[0022] The specific steps for fixing the 500mm diameter circular steel plate to the lightning protection flat steel inside the lower concrete structure by welding at the marked points to obtain the lower lightning protection steel plate are as follows:

[0023] A 500mm diameter, 5mm thick steel plate is placed at the marked point, with the axis of the steel plate aligned with the marked point on the upper surface of the lower concrete structure. The steel plate is then welded and fixed to the upper surface of the lower concrete structure using an arc welding machine to obtain the lower lightning protection steel plate.

[0024] The specific steps for welding and fixing the lower lightning protection round steel sheet, which has a diameter of 50mm, upward along the axial position of the upper end face, are as follows:

[0025] Place a circular steel plate with a diameter of 50mm and a thickness of 3mm on top of the lower lightning protection steel plate, aligning the axis of the circular steel plate with the axis of the lower lightning protection steel plate.

[0026] The specific steps for welding and fixing the lower lightning protection round steel plate along the upper end face of the 50mm diameter circular steel plate are as follows:

[0027] The lower lightning protection round steel is clamped and positioned using a fixing frame, so that the central axis of the bottom end face of the lower lightning protection round steel coincides with the central axis of the 50mm diameter circular steel plate. The two ends in contact are welded and fixed using an arc welding machine. Check whether the weld is flat, full, and without obvious pores or undercut.

[0028] The specific steps for installing and fixing the top of the lower lightning protection round steel to the upper lightning protection round steel using a high-strength spring and a steel sleeve to obtain the lightning protection connection assembly are as follows:

[0029] The high-strength spring is clamped and fixed by a fixing bracket, so that the vertical midpoint of the high-strength spring is aligned with the central axis of the lower lightning protection round steel. The bottom end of the high-strength spring is welded and fixed to the top end of the lower lightning protection round steel using an arc welding machine. The steel sleeve is then fitted onto the high-strength spring. Finally, the top end of the high-strength spring is welded and fixed to the bottom end of the upper lightning protection round steel to form a lightning protection connection assembly.

[0030] The specific steps for fixing and installing the spare current shunt assembly on the upper and lower sides of the lightning protection connection assembly are as follows:

[0031] The upper end of the standby shunt component is welded and fixed to one side of the upper lightning protection round steel of the lightning protection connection component, and the lower end of the standby shunt component is welded and fixed to the lower lightning protection steel plate of the lightning protection connection component, so that the standby shunt component is fixedly installed on one side of the lightning protection connection component.

[0032] Furthermore, the backup shunt assembly includes a housing, inside which a fixing block is provided, and a spring sheet is fixedly fastened to the fixing block. The spring sheet is rotatably disposed inside the housing along a fixing post. The housing has a first outlet and a second outlet. A flexible lightning protection strip is disposed inside the fixing post. The flexible lightning protection strip is folded in half and disposed inside the housing. The folded end of the flexible lightning protection strip is fixedly connected to the fixing block. The middle section of the flexible lightning protection strip is coiled inside the fixing post and fits against the spring sheet. The two ends of the flexible lightning protection strip extend from the first outlet and the second outlet, respectively.

[0033] Compared with existing technologies, the beneficial effects of the rigid connection lightning protection construction method for seismic isolation provided by this invention are as follows: After the upper and lower main structures in the seismic isolation layer are displaced due to an earthquake, the upper and lower lightning protection round steels can be moved simultaneously through the connection of steel sleeves. The high-strength spring provides sufficient pre-tightening force to ensure that the circular steel plate with a diameter of 50mm and a thickness of 5mm in the lower layer and the circular steel plate with a diameter of 500mm and a thickness of 5mm in the 5th layer always maintain a tight connection. When the earthquake causes excessive displacement of the upper and lower structures in the seismic isolation layer of the building, causing the high-strength spring on the lightning protection connection component to break, the flexible lightning protection strip is subjected to traction force. At this time, the spring plate drives the flexible lightning protection strip to slide outward inside the fixed column, ensuring the lightning protection grounding of the seismic isolation layer of the building is conductive, quickly dispersing the lightning current to the ground, reducing the impact area, avoiding damage to the building by lightning strikes, and thus protecting the personnel and equipment inside the building. Attached Figure Description

[0034] To more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the description of the embodiments of the present invention will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0035] Figure 1 A construction flowchart for a rigid connection lightning protection method for seismic isolation;

[0036] Figure 2 This is a schematic diagram of the construction structure for a rigid connection lightning protection method for seismic isolation.

[0037] Figure 3 This is a schematic diagram illustrating the construction effect of a rigid connection lightning protection method for seismic isolation.

[0038] Figure 4 This is an internal schematic diagram of a backup shunt component for a rigid connection lightning protection construction method for seismic isolation.

[0039] The attached diagram lists the components represented by each number as follows:

[0040] 01. Steel bushing; 02. High-strength spring; 10. Spare shunt assembly; 11. Housing; 12. Spring plate; 13. Fixing block; 14. Flexible lightning protection strip; 15. Fixing post; 16. First outlet; 17. Second outlet. Detailed Implementation

[0041] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0042] Therefore, the following detailed description of the embodiments of the invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the invention without inventive effort are within the scope of protection of the invention.

[0043] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0044] In the description of this invention, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," and "counterclockwise," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0045] Furthermore, 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 technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this invention, "a plurality of" means two or more, unless otherwise explicitly specified.

[0046] like Figure 1The diagram shown is a construction flowchart of a rigid connection lightning protection construction method for seismic isolation provided by the present invention, including the following steps:

[0047] S01: Weld the pre-reserved lightning protection flat steel inside the upper concrete structure of the building's seismic isolation layer to a 20mm diameter round steel to obtain the upper lightning protection round steel.

[0048] S02: Measure the distance between the upper lightning protection round steel and the upper concrete structure of the building's seismic isolation layer to obtain the length value;

[0049] S03: Mark the lower concrete structural floor slab according to the measured length values ​​to obtain the marked points;

[0050] S04: At the marked point, a circular steel plate with a diameter of 500mm is welded and fixed to the lightning protection flat steel inside the lower concrete structure to obtain the lower lightning protection steel plate.

[0051] S05: Place a 50mm diameter circular steel plate along the axis of the lower lightning protection steel plate;

[0052] S06: Weld and fix the lower lightning protection round steel plate along the upper end face of the 50mm diameter circular steel plate;

[0053] S07: The top of the lower lightning protection round steel is installed and fixed to the upper lightning protection round steel through a high-strength spring 02 and a steel sleeve 01 to obtain a lightning protection connection assembly;

[0054] S08: Fix the spare current shunt assembly 10 on the upper and lower sides of the lightning protection connection assembly.

[0055] In the above technical solution, the specific steps for welding the pre-reserved lightning protection flat steel inside the upper concrete structure of the building's seismic isolation layer to a 20mm diameter round steel to obtain the upper lightning protection round steel are as follows:

[0056] The lightning protection flat steel reserved inside the upper concrete structure is bent with a hand hammer so that the bending angle is not less than 90°. A 20mm diameter round steel is fixed on the clamp so that the upper end of the 20mm diameter round steel is aligned with the bottom end of the bent part of the lightning protection flat steel reserved inside the upper concrete structure. The two ends are welded and fixed by an arc welding machine to obtain the upper lightning protection round steel.

[0057] It should be noted that an arc welding machine is a general-purpose device that can be used for welding flat steel and round steel. It can use different types of welding wire and electrodes. Before welding, the lightning protection flat steel and round steel need to be inspected to confirm that they meet the quality requirements. The welding surface should be cleaned to remove rust and debris. After confirming that the welding surface is free of impurities, E6013 welding rods should be selected. The current, voltage, and speed of the arc welding machine should be adjusted according to the thickness of the welding material before welding. After welding, the weld should be inspected to ensure that the weld quality meets the requirements. Magnetic particle, penetrant, or ultrasonic methods can be used to inspect the weld surface. If the welding quality is found to be unsatisfactory, re-welding should be performed in a timely manner.

[0058] like Figure 2 As shown in Figure 3, the specific steps for measuring the distance between the upper lightning protection round steel and the upper concrete structure of the building's seismic isolation layer to obtain the length value are as follows:

[0059] The outer centerline of the upper concrete structure of the seismic isolation layer is set as the measurement benchmark. A laser measuring instrument is used to measure the distance between the bottom centerline of the upper lightning protection round steel and the benchmark point that extends vertically downward from the outer centerline of the upper concrete structure of the seismic isolation layer at the same level. The flatness of the welds at both ends is measured. The deviation value of the straight section shall not be greater than 0.003. The length value displayed on the laser measuring instrument is read.

[0060] It should be noted that a laser measuring instrument is an instrument that calculates distance by measuring the propagation time of light and using the speed of light; it is a non-contact ranging technology that can be used in various application fields, such as construction, surveying, and industrial manufacturing. The laser used in a laser measuring instrument emits a laser pulse that bounces off a reflective surface. The laser measuring instrument receives the time delay of the reflected signal and then calculates the distance by measuring the light propagation time and the speed of light; the accuracy of laser measuring instruments is typically very high, reaching fractions of a millimeter. Laser measuring instruments are used to measure the distance between the upper lightning protection round steel and the upper concrete structure of the building's seismic isolation layer.

[0061] In the above technical solution, the specific steps for marking the lower concrete structural floor slab based on the measured length values ​​to obtain the marked points are as follows:

[0062] Based on the measured length values, lines are drawn on the lower concrete structural floor slab, and the intersection of the drawn line length with the center axis of the upper end face of the lower concrete structural floor slab is marked to obtain the marked points.

[0063] In the above technical solution, the specific steps for fixing the 500mm diameter circular steel plate to the lightning protection flat steel inside the lower concrete structure at the marked points to obtain the lower lightning protection steel plate are as follows:

[0064] A 500mm diameter, 5mm thick steel plate is placed at the marked point, with the axis of the steel plate aligned with the marked point on the upper surface of the lower concrete structure. The steel plate is then welded and fixed to the upper surface of the lower concrete structure using an arc welding machine to obtain the lower lightning protection steel plate.

[0065] It should be noted that the lightning protection flat steel inside the lower concrete structure protrudes upwards onto the upper surface of the lower concrete structure.

[0066] In the above technical solution, the specific steps for welding and fixing the lower lightning protection round steel plate with a diameter of 50mm upward along the axial position of the upper end face are as follows:

[0067] Place a circular steel plate with a diameter of 50mm and a thickness of 3mm on top of the lower lightning protection steel plate, aligning the axis of the circular steel plate with the axis of the lower lightning protection steel plate.

[0068] In the above technical solution, the specific steps for welding and fixing the lower lightning protection round steel plate along its upper surface are as follows:

[0069] The lower lightning protection round steel is clamped and positioned using a fixing frame, so that the central axis of the bottom end face of the lower lightning protection round steel coincides with the central axis of the 50mm diameter circular steel plate. The two ends in contact are welded and fixed using an arc welding machine. Check whether the weld is flat, full, and without obvious pores or undercut.

[0070] In the above technical solution, the specific steps for installing and fixing the top of the lower lightning protection round steel to the upper lightning protection round steel using a high-strength spring 02 and a steel sleeve 01 to obtain the lightning protection connection assembly are as follows:

[0071] The high-strength spring 02 is clamped and fixed by the fixing bracket, so that the vertical midpoint of the high-strength spring 02 is aligned with the central axis of the lower lightning protection round steel. The bottom end of the high-strength spring 02 is welded and fixed to the top end of the lower lightning protection round steel using an arc welding machine. The steel sleeve 01 is sleeved on the high-strength spring 02. Then, the top end of the high-strength spring 02 is welded and fixed to the bottom end of the upper lightning protection round steel to form a lightning protection connection assembly.

[0072] It should be noted that after the upper and lower main structures in the seismic isolation layer are displaced due to an earthquake, the upper and lower lightning protection round steels are connected by steel sleeve 01 to ensure that they can move simultaneously. The high-strength spring 02 provides sufficient pre-tightening force to ensure that the circular steel plate with a diameter of 50mm and a thickness of 5mm in the lower layer and the circular steel plate with a diameter of 500mm and a thickness of 5mm in the 5th layer always maintain a tight connection.

[0073] In the above technical solution, the specific steps for fixing and installing the spare current shunt component 10 on the upper and lower sides of the lightning protection connection component are as follows:

[0074] The upper end of the spare shunt assembly 10 is welded and fixed to one side of the upper lightning protection round steel of the lightning protection connection assembly, and the lower end of the spare shunt assembly 10 is welded and fixed to the lower lightning protection steel plate of the lightning protection connection assembly, so that the spare shunt assembly 10 is fixedly installed on one side of the lightning protection connection assembly.

[0075] It should be noted that if the high-strength spring 02 on the lightning protection connection component breaks due to an earthquake, the building can be grounded through the backup shunt component 10.

[0076] It should be noted that the resistance of the backup shunt component 10 should be greater than the resistivity of the lower lightning protection round steel. When the lightning protection connection component is intact, grounding due to lightning strike current will not cause a return short circuit.

[0077] Furthermore, in the above technical solution, the backup shunt assembly 10 includes a housing 11, a fixing block 13 is provided inside the housing 11, a spring sheet 12 is fixedly attached to the fixing block 13, the spring sheet 12 is rotatably disposed inside the housing 11 along the fixing post 15, the housing 11 has a first outlet 16 and a second outlet 17, a flexible lightning protection strip 14 is provided inside the fixing post 15, the flexible lightning protection strip 14 is folded in half and disposed inside the housing 11, the folded end of the flexible lightning protection strip 14 is fixedly connected to the fixing block 13, the middle section of the flexible lightning protection strip 14 is coiled inside the fixing post 15 and fits the spring sheet 12, and the two ends of the flexible lightning protection strip 14 extend out from the first outlet 16 and the second outlet 17 respectively.

[0078] It should be noted that the first outlet 16 is located at the upper end of the shell 11, and the second outlet 17 is located at the lower end of the shell 11. One end of the flexible lightning protection strip 14 extends through the first outlet 16 and is welded and fixed to the upper layer of lightning protection round steel. The other end of the flexible lightning protection strip 14 extends through the second outlet 17 and is welded and fixed to the lower layer of lightning protection steel plate. When an earthquake causes excessive displacement of the upper and lower structures in the seismic isolation layer of the building, resulting in the breakage of the high-strength spring 02 on the lightning protection connection component, the flexible lightning protection strip 14 is subjected to traction force. At this time, the spring plate 12 drives the flexible lightning protection strip 14 to slide outward inside the fixed column 15, ensuring the lightning protection grounding of the seismic isolation layer of the building is connected, quickly dispersing the lightning current to the ground, reducing the impact area, and avoiding damage to the building by lightning strikes, thereby protecting the personnel and equipment inside the building.

[0079] The above description is merely a specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in the present invention should be included within the scope of protection of the present invention. Therefore, the scope of protection of the present invention should be determined by the scope of the claims.

Claims

1. A method for constructing a rigid connection lightning protection system for seismic isolation, characterized in that, Includes the following steps: S01: Weld the pre-reserved lightning protection flat steel inside the upper concrete structure of the building's seismic isolation layer to a 20mm diameter round steel to obtain the upper lightning protection round steel. S02: Measure the distance between the upper lightning protection round steel and the upper concrete structure of the building's seismic isolation layer to obtain the length value; S03: Mark the lower concrete structural floor slab according to the measured length values ​​to obtain the marked points; S04: At the marked point, a circular steel plate with a diameter of 500mm is welded and fixed to the lightning protection flat steel inside the lower concrete structure to obtain the lower lightning protection steel plate. S05: Place a 50mm diameter circular steel plate along the axis of the lower lightning protection steel plate; S06: Weld and fix the lower lightning protection round steel plate along the upper end face of the 50mm diameter circular steel plate; S07: The top of the lower lightning protection round steel is installed and fixed to the upper lightning protection round steel through a high-strength spring and a steel sleeve to obtain the lightning protection connection assembly; S08: Securely install the spare current shunt assembly on the upper and lower sides of the lightning protection connection assembly. The specific steps are as follows: The upper end of the standby shunt assembly is welded and fixed to one side of the upper lightning protection round steel of the lightning protection connection assembly, and the lower end of the standby shunt assembly is welded and fixed to the lower lightning protection steel plate of the lightning protection connection assembly, so that the standby shunt assembly is fixedly installed on one side of the lightning protection connection assembly; wherein, the resistance of the standby shunt assembly is greater than the resistivity of the lower lightning protection round steel; the standby shunt assembly includes a housing, and a fixing block is provided inside the housing. A spring sheet is fixedly clamped on the fixing block. The spring sheet is rotatably disposed inside the housing along the fixing column. The housing has a first outlet and a second outlet. A flexible lightning protection strip is disposed inside the fixing column. The flexible lightning protection strip is folded in half and disposed inside the housing. The folded end of the flexible lightning protection strip is fixedly connected to the fixing block. The middle section of the flexible lightning protection strip is coiled inside the fixing column and fits the spring sheet. The two ends of the flexible lightning protection strip extend from the first outlet and the second outlet, respectively.

2. The method for constructing a rigid connection lightning protection system for seismic isolation according to claim 1, characterized in that, The specific steps for welding the pre-reserved lightning protection flat steel inside the upper concrete structure of the building's seismic isolation layer to a 20mm diameter round steel to obtain the upper lightning protection round steel are as follows: The lightning protection flat steel reserved inside the upper concrete structure is bent with a hand hammer so that the bending angle is not less than 90°. A 20mm diameter round steel is fixed on the clamp so that the upper end of the 20mm diameter round steel is aligned with the bottom end of the bent part of the lightning protection flat steel reserved inside the upper concrete structure. The two ends are welded and fixed by an arc welding machine to obtain the upper lightning protection round steel.

3. The method for constructing a rigid connection lightning protection system for seismic isolation according to claim 1, characterized in that, The specific steps for measuring the distance between the upper lightning protection round steel and the upper concrete structure of the building's seismic isolation layer to obtain the length value are as follows: The outer centerline of the upper concrete structure of the seismic isolation layer is set as the measurement benchmark. A laser measuring instrument is used to measure the distance between the bottom centerline of the upper lightning protection round steel and the benchmark point that extends vertically downward from the outer centerline of the upper concrete structure of the seismic isolation layer at the same level. The flatness of the welds at both ends is measured. The deviation value of the straight section shall not be greater than 0.

003. The length value displayed on the laser measuring instrument is read.

4. The method for constructing a rigid connection lightning protection system for seismic isolation according to claim 1, characterized in that, The specific steps for marking the lower concrete floor slab based on the measured length values ​​to obtain the marked points are as follows: Based on the measured length values, lines are drawn on the lower concrete structural floor slab, and the intersection of the drawn line length with the center axis of the upper end face of the lower concrete structural floor slab is marked to obtain the marked points.

5. The method for constructing a rigid connection lightning protection system for seismic isolation according to claim 1, characterized in that, The specific steps for fixing the 500mm diameter circular steel plate to the lightning protection flat steel inside the lower concrete structure by welding at the marked points to obtain the lower lightning protection steel plate are as follows: A 500mm diameter, 5mm thick steel plate is placed at the marked point, with the axis of the steel plate aligned with the marked point on the upper surface of the lower concrete structure. The steel plate is then welded and fixed to the upper surface of the lower concrete structure using an arc welding machine to obtain the lower lightning protection steel plate.

6. The method for constructing a rigid connection lightning protection system for seismic isolation according to claim 1, characterized in that, The specific steps for welding and fixing the lower lightning protection round steel sheet, which has a diameter of 50mm, upward along the axial position of the upper end face, are as follows: Place a circular steel plate with a diameter of 50mm and a thickness of 3mm on top of the lower lightning protection steel plate, aligning the axis of the circular steel plate with the axis of the lower lightning protection steel plate.

7. The method for constructing a rigid connection lightning protection system for seismic isolation according to claim 1, characterized in that, The specific steps for welding and fixing the 50mm diameter circular steel plate along its upper end face to install the lower lightning protection circular steel are as follows: The lower lightning protection round steel is clamped and positioned using a fixing frame, so that the central axis of the bottom end face of the lower lightning protection round steel coincides with the central axis of the 50mm diameter circular steel plate. The two ends in contact are welded and fixed using an arc welding machine. Check whether the weld is flat, full, and without obvious pores or undercut.

8. The method for constructing a rigid connection lightning protection system for seismic isolation according to claim 1, characterized in that, The specific steps for installing and fixing the top of the lower lightning protection round steel to the upper lightning protection round steel using a high-strength spring and a steel sleeve to obtain the lightning protection connection assembly are as follows: The high-strength spring is clamped and fixed by a fixing bracket, so that the vertical midpoint of the high-strength spring is aligned with the central axis of the lower lightning protection round steel. The bottom end of the high-strength spring is welded and fixed to the top end of the lower lightning protection round steel using an arc welding machine. The steel sleeve is then fitted onto the high-strength spring. Finally, the top end of the high-strength spring is welded and fixed to the bottom end of the upper lightning protection round steel to form a lightning protection connection assembly.

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