CN117477304A - Construction method of lightning protection grounding structure of high-rise building - Google Patents
Construction method of lightning protection grounding structure of high-rise building Download PDFInfo
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- CN117477304A CN117477304A CN202311291379.1A CN202311291379A CN117477304A CN 117477304 A CN117477304 A CN 117477304A CN 202311291379 A CN202311291379 A CN 202311291379A CN 117477304 A CN117477304 A CN 117477304A
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- 238000010276 construction Methods 0.000 title claims abstract description 30
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 73
- 239000010959 steel Substances 0.000 claims abstract description 73
- 238000003466 welding Methods 0.000 claims abstract description 63
- 239000004020 conductor Substances 0.000 claims abstract description 11
- 238000009434 installation Methods 0.000 claims abstract description 7
- 230000002787 reinforcement Effects 0.000 claims description 29
- 230000002265 prevention Effects 0.000 claims description 24
- 239000011248 coating agent Substances 0.000 claims description 9
- 238000000576 coating method Methods 0.000 claims description 9
- 239000002184 metal Substances 0.000 claims description 8
- 238000000034 method Methods 0.000 claims description 7
- 238000005246 galvanizing Methods 0.000 claims description 6
- 238000005259 measurement Methods 0.000 claims description 4
- 239000010426 asphalt Substances 0.000 claims description 3
- 238000005536 corrosion prevention Methods 0.000 claims description 3
- 238000004519 manufacturing process Methods 0.000 claims description 3
- 239000000463 material Substances 0.000 claims description 3
- 239000003973 paint Substances 0.000 claims description 3
- 210000003205 muscle Anatomy 0.000 description 6
- 230000006378 damage Effects 0.000 description 4
- 230000006978 adaptation Effects 0.000 description 3
- 229910001294 Reinforcing steel Inorganic materials 0.000 description 2
- 230000003014 reinforcing effect Effects 0.000 description 2
- 208000025274 Lightning injury Diseases 0.000 description 1
- 208000027418 Wounds and injury Diseases 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000009435 building construction Methods 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 208000014674 injury Diseases 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Classifications
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
- H01R43/00—Apparatus or processes specially adapted for manufacturing, assembling, maintaining, or repairing of line connectors or current collectors or for joining electric conductors
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04D—ROOF COVERINGS; SKY-LIGHTS; GUTTERS; ROOF-WORKING TOOLS
- E04D13/00—Special arrangements or devices in connection with roof coverings; Protection against birds; Roof drainage ; Sky-lights
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
- H01R4/00—Electrically-conductive connections between two or more conductive members in direct contact, i.e. touching one another; Means for effecting or maintaining such contact; Electrically-conductive connections having two or more spaced connecting locations for conductors and using contact members penetrating insulation
- H01R4/58—Electrically-conductive connections between two or more conductive members in direct contact, i.e. touching one another; Means for effecting or maintaining such contact; Electrically-conductive connections having two or more spaced connecting locations for conductors and using contact members penetrating insulation characterised by the form or material of the contacting members
- H01R4/66—Connections with the terrestrial mass, e.g. earth plate, earth pin
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01T—SPARK GAPS; OVERVOLTAGE ARRESTERS USING SPARK GAPS; SPARKING PLUGS; CORONA DEVICES; GENERATING IONS TO BE INTRODUCED INTO NON-ENCLOSED GASES
- H01T19/00—Devices providing for corona discharge
- H01T19/04—Devices providing for corona discharge having pointed electrodes
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02G—INSTALLATION OF ELECTRIC CABLES OR LINES, OR OF COMBINED OPTICAL AND ELECTRIC CABLES OR LINES
- H02G13/00—Installations of lightning conductors; Fastening thereof to supporting structure
- H02G13/40—Connection to earth
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02G—INSTALLATION OF ELECTRIC CABLES OR LINES, OR OF COMBINED OPTICAL AND ELECTRIC CABLES OR LINES
- H02G13/00—Installations of lightning conductors; Fastening thereof to supporting structure
- H02G13/80—Discharge by conduction or dissipation, e.g. rods, arresters, spark gaps
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- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Physics & Mathematics (AREA)
- Plasma & Fusion (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Buildings Adapted To Withstand Abnormal External Influences (AREA)
- Elimination Of Static Electricity (AREA)
Abstract
The invention provides a construction method of a high-rise building lightning-protection grounding structure, which belongs to the technical field of building lightning-protection grounding, and comprises the following steps: marking lightning-proof down-lead point positions according to a design drawing, and constructing a lightning-proof grounding assembly; carrying out construction of a down lead in a building; constructing a lightning protection and lightning connection assembly on a roof; pre-buried installation auxiliary support frame; equipotential connection is carried out on the exposed conductor part inside the building; constructing a lightning protection side impact assembly, and communicating the lightning protection side impact assembly with a lightning protection grounding assembly; the lightning protection grounding assembly comprises pile foundation steel bars and foundation ground beam steel bars, wherein the pile foundation steel bars and the two main steel bars of the foundation ground beam steel bars are welded and fixed through welding steel bars, and the length of the welding steel bars is six times the length of the self diameter; the invention can provide lightning-protection grounding protection for high-rise buildings in severe weather and has low construction difficulty.
Description
Technical Field
The invention belongs to the technical field of lightning protection and grounding of buildings, and particularly relates to a construction method of a lightning protection and grounding structure of a high-rise building.
Background
Since modern buildings are typically relatively tall and exposed to the atmosphere, they are susceptible to lightning in lightning weather and the like; if lightning hits a building, the building is damaged when no lightning protection measures are taken on the building, fire disaster is caused, casualties are even caused, and electric power and telecommunication equipment in the building are damaged. And because the high-rise building is more prone to lightning stroke, and the high-rise building is usually an office or teaching building, a large number of electric equipment is stored in the high-rise building, and once the high-rise building is struck by lightning, the loss of a large number of electronic equipment and network systems is serious, so that whether the lightning protection system is reliable or not is extremely important.
Among them, lightning rods are common lightning grounding facilities that conduct lightning charges to the ground, usually by mounting a sharp tip on top of a building. The lightning rod is selected and arranged according to the height of the building, the surrounding environment, the lightning frequency and other factors.
The grounding device is a generic term for a grounding body and a grounding wire, and the grounding device is used for guiding lightning current into the ground, so that the protection of a lightning protection system is largely related to the lightning protection.
The existing lightning protection grounding structure is extremely easy to damage when suffering severe weather, such as strong typhoon weather, typhoon doped thunderstorm rain, so that the lightning protection structure is damaged, and the problem that lightning protection cannot be carried out in the later stage of a building is solved.
Disclosure of Invention
In view of the above, the invention provides a construction method of a lightning-protection grounding structure of a high-rise building, which can provide lightning-protection grounding protection for the high-rise building in severe weather and has low construction difficulty.
The invention is realized in the following way:
the invention provides a lightning protection grounding construction method for a high-rise building, which comprises the following steps:
s10: marking lightning-proof down-lead point positions according to a design drawing, and constructing a lightning-proof grounding assembly;
s20: carrying out construction of a down lead in a building;
s30: constructing a lightning protection and lightning connection assembly on a roof;
s40: pre-buried installation auxiliary support frame;
s50: equipotential connection is carried out on the exposed conductor part inside the building;
s60: and constructing a lightning protection side impact assembly, and communicating the lightning protection side impact assembly with a lightning protection grounding assembly.
On the basis of the technical scheme, the lightning protection grounding construction method of the high-rise building can be improved as follows:
the lightning protection down conductor point positions are marked according to a design drawing, and the specific steps of constructing the lightning protection grounding assembly comprise:
according to the lightning protection down-lead point position marked by the construction design drawing, according to the field measurement marks, lightning protection grounding components are built at the bottom end of each lightning protection down-lead point position by welding pile foundation reinforcements and foundation ground beam reinforcements, two main reinforcements of the foundation reinforcements corresponding to two pile foundation reinforcements are welded during welding, phi 12 reinforcements are adopted as welding materials for double-sided welding, the welding length is 6 times of the diameter of the reinforcements, the welding is full and free, the welding is marked by yellow paint after the welding is finished, the welding joint is treated, and after the coating at the welding joint is knocked out, the asphalt is brushed for corrosion prevention.
Further, the concrete steps of constructing the lightning protection and lightning connection assembly on the roof comprise:
the manufacturing method comprises the steps of installing phi 12 hot dip galvanized round steel on a parapet wall of a building roof as a lightning receiving belt, and welding and fixing the lightning receiving belt and a pre-buried hot dip galvanized flat steel bracket; the method comprises the steps of (1) applying a lightning receiving net on a roof, wherein the lightning receiving net is also made of phi 12 hot dip galvanized round steel, welding the round steel into a grid of not more than 10m & lt 10m & gt, and welding and connecting two ends of all metal pipelines, brackets and equipment shells exposed out of the roof with a lightning receiving belt by adopting 25 x 4 hot dip galvanized flat steel; the steel gas diffusing pipe erected in the building is grounded and connected with the roof lightning receiving strip, the lightning receiving rod is installed through the connecting support, the length of the lightning receiving rod needle is 2m, two groups of lightning rod down-lead wires are welded and fixed at two ends of the bottom of the lightning receiving rod, and the two groups of lightning rod down-lead wires are respectively welded and communicated with the roof lightning receiving strip through the lightning rod down-lead wires.
Further, the concrete steps of the pre-buried installation auxiliary support frame comprise:
the insulating ring is sleeved outside the lightning rod, a steel plate buried in advance at the top of the roof is fixedly connected with the embedded end bolt at the bottom of the auxiliary support, the fixed height is measured and marked through the horizontal measuring instrument, the plurality of auxiliary supports are kept in a horizontal state on the same height plane, the mould is fixed according to the position of the auxiliary support, concrete is filled into the mould, after the concrete is thoroughly dried, the auxiliary support and the insulating ring are fixedly installed through the bolt corresponding to the fixing groove on the auxiliary support and the connecting disc on the insulating ring, and the lightning rod is in wind resistance and inclination prevention.
Further, the specific step of equipotential bonding of the exposed conductor part inside the building comprises the following steps:
the exposed conductive parts of the building electrical device are connected in an equipotential way and are independently grounded, and an independent grounded equipotential grounding point is connected with an outdoor grounding electrode in a way of adopting an external connecting plate to apply a grounding wire; the antistatic equipotential and equipotential grounding points are welded and connected with the electric ribs in the near column by the concealed grounding wires through the external connecting plates, the connection process requires to adopt phi 12 steel bars for bridging, the bridging length is not less than 6 times of the diameter, double-sided welding is performed, welding seams are full and have no omission, and the coating is removed in time after the welding is completed.
Further, the specific steps of constructing the lightning protection side impact assembly and communicating the lightning protection side impact assembly with the lightning protection grounding assembly include:
the side impact prevention support is fixedly arranged outside the building through expansion bolts, the side impact prevention belt is welded and fixed on the side impact prevention support, the side impact prevention belt is also made of phi 12 hot dip galvanized round steel, more than six layers of the building are provided with the side impact prevention belt, a group of side impact prevention belts are arranged at each interval, and one end of the side impact prevention belt is welded and communicated with the roof lightning receiving belt through welding external power-guiding ribs.
Further, the lightning protection grounding assembly comprises pile foundation steel bars and foundation ground beam steel bars, wherein the pile foundation steel bars and the two main steel bars of the foundation ground beam steel bars are welded and fixed through welding steel bars, and the length of the welding steel bars is six times of the length of the self diameter.
Further, lightning protection receives the flashing component including receiving the flashing tape, receiving the flashing net and receiving the flashing rod, it is fixed welded with hot-galvanize band steel support to connect the flashing tape, the interval between the hot-galvanize band steel support is 0.5m, hot-galvanize band steel support top 0.3m department is provided with first turning, first turning top is provided with the dead lever, the dead lever be used for with it welds the fixed to connect the flashing tape, it is the net structure that many phi 12 hot-galvanize round steel welds the makeup to meet the flashing net, it is fixed with roof top through pre-buried clamp to meet the bottom of flashing net, the tip that meets the flashing net all buries with the parapet inside electric muscle welded fastening, hot-galvanize band steel support pre-buried sets up parapet top, hot-galvanize band steel support's bottom with electric muscle welded intercommunication, electric muscle's bottom and two logical long reinforcing bars overlap joint weld in the building.
Further, the lightning rod comprises a lightning rod and a supporting base, the top of the lightning rod comprises a needle tip and a fixed end, the needle tip and the fixed end are detachably connected through a fixed anchor bolt through a fixed hole, a slot is formed in the fixed end, a plug block matched with the slot is arranged at the bottom of the needle tip, the bottom of the needle tip is tightly attached to the top of the fixed end, two lightning rod down-lead wires are welded and fixed at the two ends of the bottom of the lightning rod through a lightning rod support, and the two lightning rod down-lead wires are welded and connected with the lightning rod through the lightning rod down-lead wires.
Further, the outer end of lightning rod is through a plurality of auxiliary stay of insulating cover fixed connection, the bottom that auxiliary propped is pre-buried end, the top that auxiliary propped is provided with the fixed slot, the bottom outer end of insulating cover be provided with the connection pad of fixed slot size looks adaptation, the fixed slot with the connection pad is used for connecting fixedly auxiliary stay with auxiliary stay, the inner wall of insulating cover is provided with insulating coating, the internal diameter of insulating cover with meet the coarsest section size looks adaptation of flash rod.
Compared with the prior art, the construction method of the lightning protection grounding structure of the high-rise building has the beneficial effects that: through setting up the lightning pole at the roofing, connect the flashing tape and connect the flashing net for guide thunder and lightning charge, receive and disperse the impact of thunder and lightning, through connecting down lead and through down lead and lightning grounding subassembly intercommunication, can lead to the earth with the thunder and lightning that receives, avoid causing the damage to high-rise building, through exposing conductor part in the building equipotential connection and grounding alone, can effectively protect the security of the inside electrical equipment of building, through the auxiliary stay of lightning pole external mounting, can strengthen the wind resistance of lightning pole, avoid the structure to suffer the destruction, through the outside side-strike area of preventing of building construction, can effectively prevent side-strike thunder to cause the injury to the building.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings that are needed in the description of the embodiments of the present invention will be briefly described below, it being obvious that the drawings in the following description are only some embodiments of the present invention, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a flow chart of a method of construction of a lightning grounding structure for a high-rise building;
FIG. 2 is a schematic view of a lightning grounding structure of a high-rise building;
FIG. 3 is a schematic view of a lightning grounding assembly of a high-rise building lightning grounding structure;
FIG. 4 is a schematic view of a lightning grounding structure lightning receiving strip of a high-rise building;
in the drawings, the list of components represented by the various numbers is as follows:
10. pile foundation reinforcing steel bars; 11. a foundation ground beam steel bar; 12. welding reinforcing steel bars; 13. a lightning receiving belt; 14. a lightning receiving network; 15. a lightning receiving rod; 16. a hot dip galvanized flat steel bracket; 17. an electric rib; 18. a lightning rod; 19. a support base; 20. a needle tip; 21. a fixed end; 22. an insulating sleeve; 23. and (5) auxiliary support.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention more apparent, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention.
As shown in FIG. 1, the embodiment of the invention provides a lightning protection grounding construction method for a high-rise building, which comprises the following steps:
s10: marking lightning-proof down-lead point positions according to a design drawing, and constructing a lightning-proof grounding assembly;
s20: carrying out construction of a down lead in a building;
s30: constructing a lightning protection and lightning connection assembly on a roof;
s40: pre-buried installation auxiliary support frame;
s50: equipotential connection is carried out on the exposed conductor part inside the building;
s60: and constructing a lightning protection side impact assembly, and communicating the lightning protection side impact assembly with a lightning protection grounding assembly.
In the above technical scheme, the specific steps of constructing the lightning grounding assembly according to the design drawing marking the lightning down conductor point positions include:
according to the lightning protection down-lead point position marked by the construction design drawing, according to the field measurement marks, lightning protection grounding components are built at the bottom end of each lightning protection down-lead point position by welding pile foundation reinforcements and foundation ground beam reinforcements, two main reinforcements of the foundation reinforcements corresponding to two pile foundation reinforcements are welded during welding, phi 12 reinforcements are adopted as welding materials for double-sided welding, the welding length is 6 times of the diameter of the reinforcements, the welding is full and free, the welding is marked by yellow paint after the welding is finished, the welding joint is treated, and after the coating at the welding joint is knocked out, the asphalt is brushed for corrosion prevention.
The construction method for the down conductor in the building comprises the following specific steps of:
welding two main ribs with the diameter of more than 16 or four main ribs with the diameter of more than 12 in the building steel bar column to be used as a down lead, wherein the upper end of the down lead is welded with an electric rib at the bottom of a roof lightning-protection belt, and the lower end of the down lead is welded with a lightning-protection grounding assembly; four grounding steel plates are arranged at four corners of a building, and the grounding steel plates are required to be kept 0.5m high with an outdoor terrace for grounding resistance measurement and external grounding electrode guiding.
Further, in the above technical solution, the specific steps of constructing the lightning protection and lightning connection assembly on the roof include:
the manufacturing method comprises the steps of installing phi 12 hot dip galvanized round steel on a parapet wall of a building roof as a lightning receiving belt, and welding and fixing the lightning receiving belt and a pre-buried hot dip galvanized flat steel bracket; the method comprises the steps of (1) applying a lightning receiving net on a roof, wherein the lightning receiving net is also made of phi 12 hot dip galvanized round steel, welding the round steel into a grid of not more than 10m & lt 10m & gt, and welding and connecting two ends of all metal pipelines, brackets and equipment shells exposed out of the roof with a lightning receiving belt by adopting 25 x 4 hot dip galvanized flat steel; the steel gas diffusing pipe erected in the building is grounded and connected with the roof lightning receiving strip, the lightning receiving rod is installed through the connecting support, the length of the lightning receiving rod needle is 2m, two groups of lightning rod down-lead wires are welded and fixed at two ends of the bottom of the lightning receiving rod, and the two groups of lightning rod down-lead wires are respectively welded and communicated with the roof lightning receiving strip through the lightning rod down-lead wires.
The bottom of the lightning receiving net is welded with the lightning receiving net support, and both ends of the hot galvanizing round steel on the lightning receiving net are welded and communicated with the lightning receiving belt.
Further, in the above technical solution, the specific step of equipotential bonding of the exposed conductor part inside the building includes:
the exposed conductive parts of the building electrical device are connected in an equipotential way and are independently grounded, and an independent grounded equipotential grounding point is connected with an outdoor grounding electrode in a way of adopting an external connecting plate to apply a grounding wire; the antistatic equipotential and equipotential grounding points are welded and connected with the electric ribs in the near column by the concealed grounding wires through the external connecting plates, the connection process requires to adopt phi 12 steel bars for bridging, the bridging length is not less than 6 times of the diameter, double-sided welding is performed, welding seams are full and have no omission, and the coating is removed in time after the welding is completed.
Wherein, building electrical equipment exposes the part and includes: PE bus bars and shells of distribution boxes, cable bridges, metal trunking, gas and water main pipes, main branch pipes, metal brackets, metal wallboard and other building metal members and metal handrails with permission of conditions.
Further, in the above technical scheme, the specific steps of constructing the lightning protection side impact assembly and communicating the lightning protection side impact assembly with the lightning protection grounding assembly include:
the side impact prevention support is fixedly arranged outside the building through expansion bolts, the side impact prevention belt is welded and fixed on the side impact prevention support, the side impact prevention belt is also made of phi 12 hot dip galvanized round steel, more than six layers of the building are provided with the side impact prevention belt, a group of side impact prevention belts are arranged at each interval, and one end of the side impact prevention belt is welded and communicated with the roof lightning receiving belt through welding external power-guiding ribs.
As shown in fig. 2 to 4, the lightning protection grounding assembly comprises pile foundation reinforcement 10 and foundation ground beam reinforcement 11, wherein the pile foundation reinforcement 10 and two main reinforcements of the foundation ground beam reinforcement 11 are welded and fixed through welding reinforcement 12, and the length of the welding reinforcement 12 is six times the length of the diameter of the welding reinforcement.
Further, in the above technical scheme, the concrete steps of pre-burying the installation auxiliary support frame include:
the insulating ring is sleeved outside the lightning rod, a steel plate buried in advance at the top of the roof is fixedly connected with the embedded end bolt at the bottom of the auxiliary support, the fixed height is measured and marked through the horizontal measuring instrument, the plurality of auxiliary supports are kept in a horizontal state on the same height plane, the mould is fixed according to the position of the auxiliary support, concrete is filled into the mould, after the concrete is thoroughly dried, the auxiliary support and the insulating ring are fixedly installed through the bolt corresponding to the fixing groove on the auxiliary support and the connecting disc on the insulating ring, and the lightning rod is in wind resistance and inclination prevention.
Further, in the above technical scheme, lightning protection receiving assembly includes receiving the flashing tape 13, receiving the flashing net 14 and receiving the flashing rod 15, it is fixed welded with hot-galvanize band steel support 16 to receive the flashing tape 13, interval between the hot-galvanize band steel support 16 is 0.5m, hot-galvanize band steel support 16 top 0.3m department is provided with first turning, first turning top is provided with the dead lever, the dead lever is used for with receiving the flashing tape 13 welded fastening, it is the net structure that many phi 12 hot-galvanize round steel welded splice become to receive the flashing net 14, the bottom of receiving the flashing net 14 passes through pre-buried clamp and roof top fixed connection, the tip of receiving the flashing net 14 all with the internal electric muscle 17 welded fastening of buries of parapet, hot-galvanize band steel support 16 pre-buried setting is on parapet top, the bottom and the electric muscle 17 welded intercommunication of hot-galvanize band steel support 16, the bottom and two logical long reinforcing bars overlap joint welded in the building are led to the electric muscle 17.
Further, in the above technical scheme, the lightning rod 15 includes lightning rod 18 and support base 19, the top of lightning rod 18 includes needle point 20 and stiff end 21, pass fixed anchor bolt through the fixed orifices between needle point 20 and the stiff end 21 and dismantle the connection, the inside slot that is provided with of stiff end 21, the bottom of needle point 20 is provided with the inserted block with slot looks adaptation, the bottom of needle point 20 closely laminates with the top of stiff end 21, two lightning rod downlead of lightning rod support welded fastening are passed through at the bottom both ends of lightning rod 18, pass through lightning rod downlead and connect the flash zone 13 welded connection.
Further, in the above technical scheme, the outer end of the lightning rod 18 is fixedly connected with a plurality of auxiliary supports 23 through an insulating sleeve 22, the bottom ends of the auxiliary supports 23 are embedded ends, the top of the auxiliary supports 23 are provided with fixing grooves, the outer end of the bottom of the insulating sleeve 22 is provided with a connecting disc matched with the size of the fixing grooves, the fixing grooves and the connecting disc are used for connecting and fixing the auxiliary supports 23 and the auxiliary supports 23, the inner wall of the insulating sleeve 22 is provided with an insulating coating, and the inner diameter of the insulating sleeve 22 is matched with the size of the thickest section of the lightning rod 15.
Claims (10)
1. The lightning protection grounding construction method for the high-rise building is characterized by comprising the following steps of:
s10: marking lightning-proof down-lead point positions according to a design drawing, and constructing a lightning-proof grounding assembly;
s20: carrying out construction of a down lead in a building;
s30: constructing a lightning protection and lightning connection assembly on a roof;
s40: pre-buried installation auxiliary support frame;
s50: equipotential connection is carried out on the exposed conductor part inside the building;
s60: and constructing a lightning protection side impact assembly, and communicating the lightning protection side impact assembly with a lightning protection grounding assembly.
2. The lightning-protection grounding construction method of the high-rise building according to claim 1, wherein the specific steps of constructing the lightning-protection grounding assembly according to the design drawing marking the lightning-protection down-lead point position include:
according to the lightning protection down-lead point position marked by the construction design drawing, according to the field measurement marks, lightning protection grounding components are built at the bottom end of each lightning protection down-lead point position by welding pile foundation reinforcements and foundation ground beam reinforcements, two main reinforcements of the foundation reinforcements corresponding to two pile foundation reinforcements are welded during welding, phi 12 reinforcements are adopted as welding materials for double-sided welding, the welding length is 6 times of the diameter of the reinforcements, the welding is full and free, the welding is marked by yellow paint after the welding is finished, the welding joint is treated, and after the coating at the welding joint is knocked out, the asphalt is brushed for corrosion prevention.
3. The lightning protection and grounding construction method for the high-rise building according to claim 2, wherein the concrete steps of constructing the lightning protection and lightning connection assembly on the roof comprise:
the manufacturing method comprises the steps of installing phi 12 hot dip galvanized round steel on a parapet wall of a building roof as a lightning receiving belt, and welding and fixing the lightning receiving belt and a pre-buried hot dip galvanized flat steel bracket; the method comprises the steps of (1) applying a lightning receiving net on a roof, wherein the lightning receiving net is also made of phi 12 hot dip galvanized round steel, welding the round steel into a grid of not more than 10m & lt 10m & gt, and welding and connecting two ends of all metal pipelines, brackets and equipment shells exposed out of the roof with a lightning receiving belt by adopting 25 x 4 hot dip galvanized flat steel; the steel gas diffusing pipe erected in the building is grounded and connected with the roof lightning receiving strip, the lightning receiving rod is installed through the connecting support, the length of the lightning receiving rod needle is 2m, two groups of lightning rod down-lead wires are welded and fixed at two ends of the bottom of the lightning receiving rod, and the two groups of lightning rod down-lead wires are respectively welded and communicated with the roof lightning receiving strip through the lightning rod down-lead wires.
4. The lightning protection and grounding construction method for a high-rise building according to claim 3, wherein the concrete steps of pre-burying the installation auxiliary supporting frame comprise:
the insulating ring is sleeved outside the lightning rod, a steel plate buried in advance at the top of the roof is fixedly connected with the embedded end bolt at the bottom of the auxiliary support, the fixed height is measured and marked through the horizontal measuring instrument, the plurality of auxiliary supports are kept in a horizontal state on the same height plane, the mould is fixed according to the position of the auxiliary support, concrete is filled into the mould, after the concrete is thoroughly dried, the auxiliary support and the insulating ring are fixedly installed through the bolt corresponding to the fixing groove on the auxiliary support and the connecting disc on the insulating ring, and the lightning rod is in wind resistance and inclination prevention.
5. The lightning protection and grounding construction method for high-rise buildings according to claim 4, wherein the specific step of equipotential bonding of the exposed conductor parts inside the building comprises the following steps:
the exposed conductive parts of the building electrical device are connected in an equipotential way and are independently grounded, and an independent grounded equipotential grounding point is connected with an outdoor grounding electrode in a way of adopting an external connecting plate to apply a grounding wire; the antistatic equipotential and equipotential grounding points are welded and connected with the electric ribs in the near column by the concealed grounding wires through the external connecting plates, the connection process requires to adopt phi 12 steel bars for bridging, the bridging length is not less than 6 times of the diameter, double-sided welding is performed, welding seams are full and have no omission, and the coating is removed in time after the welding is completed.
6. The lightning protection grounding construction method of the high-rise building according to claim 5, wherein the specific step of constructing a lightning protection side impact assembly and communicating the lightning protection side impact assembly with the lightning protection grounding assembly comprises the following steps:
the side impact prevention support is fixedly arranged outside the building through expansion bolts, the side impact prevention belt is welded and fixed on the side impact prevention support, the side impact prevention belt is also made of phi 12 hot dip galvanized round steel, more than six layers of the building are provided with the side impact prevention belt, a group of side impact prevention belts are arranged at each interval, and one end of the side impact prevention belt is welded and communicated with the roof lightning receiving belt through welding external power-guiding ribs.
7. The lightning-protection grounding construction method for the high-rise building according to claim 6, wherein the lightning-protection grounding component comprises pile foundation steel bars (10) and foundation ground beam steel bars (11), the pile foundation steel bars (10) and two main steel bars of the foundation ground beam steel bars (11) are welded and fixed through welding steel bars (12), and the length of the welding steel bars (12) is six times the length of the self diameter.
8. The lightning protection grounding construction method of the high-rise building according to claim 7, wherein the lightning protection lightning connection assembly comprises a lightning connection belt (13), a lightning connection net (14) and a lightning connection rod (15), the lightning connection belt (13) and a hot galvanizing flat steel support (16) are fixedly welded, the space between the hot galvanizing flat steel supports (16) is 0.5m, a first corner is arranged at the position of 0.3m at the top of the hot galvanizing flat steel support (16), a fixing rod is arranged at the top of the first corner, the fixing rod is used for being fixedly welded with the lightning connection belt (13), the lightning connection net (14) is of a grid structure formed by welding a plurality of phi 12 hot galvanizing round steels, the bottom end of the lightning connection net (14) is fixedly connected with the top of a roof through an embedded clamp, the end of the lightning connection net (14) is fixedly welded with an electrical rib (17) embedded in a parapet wall, the hot galvanizing flat steel support (16) is embedded in the top of the parapet wall, the bottom of the flat steel support (16) is fixedly arranged at the top of the parapet wall, and the bottom of the electrical flat steel support (17) is in lap joint with the two electrical ribs (17).
9. The lightning protection grounding construction method of the high-rise building according to claim 8, wherein the lightning rod (15) comprises a lightning rod (18) and a supporting base (19), the top of the lightning rod (18) comprises a needle tip (20) and a fixed end (21), the needle tip (20) and the fixed end (21) are detachably connected through a fixed anchor bolt through a fixed hole, a slot is formed in the fixed end (21), an inserting block matched with the slot is formed in the bottom of the needle tip (20), the bottom end of the needle tip (20) is tightly attached to the top end of the fixed end (21), two lightning rod downleads are welded and fixed at two ends of the bottom of the lightning rod (18) through a lightning rod bracket, and the two lightning rod downleads are welded and connected with the lightning rod (13) through the lightning rod downleads.
10. The lightning protection grounding construction method of the high-rise building according to claim 9, wherein the outer end of the lightning rod (18) is fixedly connected with a plurality of auxiliary supports (23) through an insulating sleeve (22), the bottom end of each auxiliary support (23) is a pre-buried end, a fixing groove is formed in the top of each auxiliary support (23), a connecting disc matched with the fixing groove in size is arranged at the outer end of the bottom of each insulating sleeve (22), the fixing groove and the connecting disc are used for connecting and fixing the auxiliary supports (23) and the auxiliary supports (23), an insulating coating is arranged on the inner wall of each insulating sleeve (22), and the inner diameter of each insulating sleeve (22) is matched with the thickest section of the corresponding lightning rod (15).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311291379.1A CN117477304A (en) | 2023-10-08 | 2023-10-08 | Construction method of lightning protection grounding structure of high-rise building |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311291379.1A CN117477304A (en) | 2023-10-08 | 2023-10-08 | Construction method of lightning protection grounding structure of high-rise building |
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| Publication Number | Publication Date |
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| CN117477304A true CN117477304A (en) | 2024-01-30 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202311291379.1A Pending CN117477304A (en) | 2023-10-08 | 2023-10-08 | Construction method of lightning protection grounding structure of high-rise building |
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| Country | Link |
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| CN (1) | CN117477304A (en) |
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- 2023-10-08 CN CN202311291379.1A patent/CN117477304A/en active Pending
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