街道的广告牌为什么这么土
⓵What should you pay attention to when designing and making outdoor billboards
Hello! Hong Hai will explain to you the four major aspects that need to be paid attention to during the production and design process of outdoor billboards: First: the production of outdoor billboards should be consistent with the architectural design requirements of the overall layout of the building and the design of the building facade. The construction drawings should be consistent with Tight coordination of design;
Twenty years is the design life of large high-post outdoor billboards, and other types of outdoor billboards are designed for ten years. The load for setting up outdoor billboards should be stipulated in GB50009-2001. The basic wind pre ssure should be 0.45kN
/
m2, and the height coefficient, wind vibration coefficient, shape coefficient, etc. should be considered; for earthquake-prone areas, the combination of earthquake effects and other loads should also be considered . The steel structure used in outdoor billboards should comply with the relevant provisions of GB50017 and "Technical Specifications for Steel Structures of Outdoor Billboards" CECS 148-2003, and the torsional strength check calculation of the steel structure connecting parts should be considered. Second: The basic structure design of outdoor floor-standing billboards Hong Hai recommends that the following requirements should be met:
① Outdoor floor-standing billboards should be based on the soil conditions and structural foundation requirements of the construction site. And the ground foundation strength should be calculated reasonably. If necessary, the stability of the ground foundation against sliding should be calculated. The area of the bottom of the foundation away from the foundation shall not exceed 1/4 of the area of the foundation;
②Based on a rigid foundation, the usual eccentric load should comply with the "Building Foundation Design Code" GB50007 for the design of outdoor floor-standing billboards;< br/>③When the foundation is lower than the groundwater level, the buoyancy effect of groundwater on the foundation and casing should be considered, and ensure that the groundwater is not corrosive to the foundation, and corresponding anti-corrosion treatments should be carried out;
④When the foundation stratum When the soft soil layer is relatively thick, the upper load is large and concentrated, and the shallow foundation cannot meet the bearing capacity and deformation requirements of the outdoor floor-standing billboard steel structure foundation. A caisson or pile foundation can be used. The pile foundation uses pre fabricated reinforced concrete piles, cast-in-place concrete piles or steel pipe piles. This type of pile foundation should be determined after compre hensive analysis based on geological conditions, structure type, load size, construction conditions and the environment of the construction site. The calculation of the pile foundation is carried out in accordance with the "Design Code for Building Foundation Foundation" standard of GB50007.
Third: The design of the bracket base of outdoor rooftop billboards should meet the following requirements:
① Outdoor rooftop billboards should not be connected with friction expansion bolts. It is necessary to use good chemical anchors, planting bars and self-wall anchors, which must have pre cise technical parameters and quality assurance systems;
② The layout of the bracket base of the outdoor rooftop billboard should match the layout of the roof column network Properly, it should be able to directly bear the load-bearing pre ssure, tension and shear force of the billboard structure;
③The base of the outdoor Honghai roof billboard bracket can be welded and connected with bolts, anchors, top beams and embedded parts in the column, and can Effectively and reliably spre ad the load from the base of the advertising signage bracket to the bearing capacity of the substructure;
④The embedded depth of concrete bolts or anchor bolts should reach 30 to 40D (d is the diameter of the bolt); installation of anchor bolts Should meet the technical requirements of the product used. When the embedding depth is not enough, welding with beam and column steel bars should be used, and at the same time, sufficient thickness of the concrete protective layer must be ensured.
Fourth: The lightning protection and grounding design of Honghai outdoor billboards should meet the following requirements:
① Outdoor billboards should take corresponding lightning protection measures based on the environment they are in, including pre venting lightning and lightning attack.
② Outdoor billboard lightning protection facilities (including access equipment, shunts, grounding equipment, overvoltage protection equipment and other connecting conductors) should be designed according to the lightning protection environment and the environment in which they are located. The lightning protection design must pre vent direct lightning and lightning attack measures;
③ When installing outdoor billboards on the roof of a building or on an exterior wall, the lightning protection facilities can be consistent with the design of the building's lightning protection grounding system. Combination;
④ When installed on the roof of a multi-story residential building, outdoor billboards should be welded to a steel structure frame, metal plate and residential building lightning protection system, and ensure that the grounding resistance is not greater than 4Ω. Otherwise, additional protection is required. Lightning grounding system;
⑤The grounding system of outdoor billboards should form an equipotential connection;
⑥Outdoor billboard steel structure frames, metal plates, etc. can be used as connecting air terminal equipment and offline lightning protection equipment , but must be connected by multi-point welding with the down conductors of the floor and wall lightning protection systems;
⑦In independent outdoor billboards, in addition to being installed inside and outside protected lightning protection belts and lightning protection nets, steel frames, metal plates, steel Columns should be effectively grounded. Grounding wires can be shared or laid separately; building lightning protection grounding and other lightning protection grounding equipment, including various types of metal pipes, should be connected to the same lightning protection grounding facility;
⑧Outdoor billboards It should be a low-voltage power supply. Generally, a three-phase five-wire system should be used for power supply. Grounding and electricity safety must be ensured and implemented in accordance with the regulations of JGJ/T16.
Hope it can help you~
Twenty years is the design life of large high-post outdoor billboards, and other types of outdoor billboards are designed for ten years. The load for setting up outdoor billboards should be stipulated in GB50009-2001. The basic wind pre ssure should be 0.45kN
/
m2, and the height coefficient, wind vibration coefficient, shape coefficient, etc. should be considered; for earthquake-prone areas, the combination of earthquake effects and other loads should also be considered . The steel structure used in outdoor billboards should comply with the relevant provisions of GB50017 and "Technical Specifications for Steel Structures of Outdoor Billboards" CECS 148-2003, and the torsional strength check calculation of the steel structure connecting parts should be considered. Second: The basic structure design of outdoor floor-standing billboards Hong Hai recommends that the following requirements should be met:
① Outdoor floor-standing billboards should be based on the soil conditions and structural foundation requirements of the construction site. And the ground foundation strength should be calculated reasonably. If necessary, the stability of the ground foundation against sliding should be calculated. The area of the bottom of the foundation away from the foundation shall not exceed 1/4 of the area of the foundation;
②Based on a rigid foundation, the usual eccentric load should comply with the "Building Foundation Design Code" GB50007 for the design of outdoor floor-standing billboards;< br/>③When the foundation is lower than the groundwater level, the buoyancy effect of groundwater on the foundation and casing should be considered, and ensure that the groundwater is not corrosive to the foundation, and corresponding anti-corrosion treatments should be carried out;
④When the foundation stratum When the soft soil layer is relatively thick, the upper load is large and concentrated, and the shallow foundation cannot meet the bearing capacity and deformation requirements of the outdoor floor-standing billboard steel structure foundation. A caisson or pile foundation can be used. The pile foundation uses pre fabricated reinforced concrete piles, cast-in-place concrete piles or steel pipe piles. This type of pile foundation should be determined after compre hensive analysis based on geological conditions, structure type, load size, construction conditions and the environment of the construction site. The calculation of the pile foundation is carried out in accordance with the "Design Code for Building Foundation Foundation" standard of GB50007.
Third: The design of the bracket base of outdoor rooftop billboards should meet the following requirements:
① Outdoor rooftop billboards should not be connected with friction expansion bolts. It is necessary to use good chemical anchors, planting bars and self-wall anchors, which must have pre cise technical parameters and quality assurance systems;
② The layout of the bracket base of the outdoor rooftop billboard should match the layout of the roof column network Properly, it should be able to directly bear the load-bearing pre ssure, tension and shear force of the billboard structure;
③The base of the outdoor Honghai roof billboard bracket can be welded and connected with bolts, anchors, top beams and embedded parts in the column, and can Effectively and reliably spre ad the load from the base of the advertising signage bracket to the bearing capacity of the substructure;
④The embedded depth of concrete bolts or anchor bolts should reach 30 to 40D (d is the diameter of the bolt); installation of anchor bolts Should meet the technical requirements of the product used. When the embedding depth is not enough, welding with beam and column steel bars should be used, and at the same time, sufficient thickness of the concrete protective layer must be ensured.
Fourth: The lightning protection and grounding design of Honghai outdoor billboards should meet the following requirements:
① Outdoor billboards should take corresponding lightning protection measures based on the environment they are in, including pre venting lightning and lightning attack.
② Outdoor billboard lightning protection facilities (including access equipment, shunts, grounding equipment, overvoltage protection equipment and other connecting conductors) should be designed according to the lightning protection environment and the environment in which they are located. The lightning protection design must pre vent direct lightning and lightning attack measures;
③ When installing outdoor billboards on the roof of a building or on an exterior wall, the lightning protection facilities can be consistent with the design of the building's lightning protection grounding system. Combination;
④ When installed on the roof of a multi-story residential building, outdoor billboards should be welded to a steel structure frame, metal plate and residential building lightning protection system, and ensure that the grounding resistance is not greater than 4Ω. Otherwise, additional protection is required. Lightning grounding system;
⑤The grounding system of outdoor billboards should form an equipotential connection;
⑥Outdoor billboard steel structure frames, metal plates, etc. can be used as connecting air terminal equipment and offline lightning protection equipment , but must be connected by multi-point welding with the down conductors of the floor and wall lightning protection systems;
⑦In independent outdoor billboards, in addition to being installed inside and outside protected lightning protection belts and lightning protection nets, steel frames, metal plates, steel Columns should be effectively grounded. Grounding wires can be shared or laid separately; building lightning protection grounding and other lightning protection grounding equipment, including various types of metal pipes, should be connected to the same lightning protection grounding facility;
⑧Outdoor billboards It should be a low-voltage power supply. Generally, a three-phase five-wire system should be used for power supply. Grounding and electricity safety must be ensured and implemented in accordance with the regulations of JGJ/T16.
Hope it can help you~