Changsha cityOutdoor advertisingCardsQuality securityTesting of reports * news flashes
The billboards are one of the many forms in our country:
It has a visual appearance, and the rods have a clear and reasonable stress and are therefore widely applied. In particular, with the development of our economy, more and more highways have been built and three billboards, the main view of the highway, have received increasing attention. This paper is based on an example of the testing of three billboards on a highway in zhejiang ningbo. Ii. The billboard base profile book is a billboard with three billboards for an interlocking area of the zhejiang ningbo highway, with a three-sided triangle of equal length, all 18 m, with a top plate height of +16. 000 m, a top plate height of +22. 000 m, a billboard pole of 1,400 x 14 welding under 6. 000 m, a 1400 x 12 welding tube over 6. 000 m, and a main subject pole of 150 x 100 x 5 rectangular tubes, 100 x 5 tubes, 100 x 7 tubes, 70 x 4 tubes, four forms of q235b steel, all of which are made from the main building pillars of the billboard, such as the poles used for the billboard, etc. The structure of the billboards is shown in the figure below. This billboard is designed to have a reasonable useful life of 20 years, with an earthquake protected at 6 degrees and structural security phase ii. First, the billboard security check of outdoor advertising facilities, as a vehicle for advertising, with their unique location, has played an active role in the quality of the enterprise's products, its social image, its cultural content, etc., and has become increasingly popular with advertisers, resulting in rapid growth in the number of outdoor advertising facilities, increasing diversity of structures and increasing safety concerns. Because of the special nature of the structure and location of outdoor advertising facilities, which impose high demands on their own quality, and because of historical reasons and insufficient attention paid to the safety of advertising facilities by the owners of outdoor advertising facilities, there are numerous security risks to the structure of most outdoor advertising facilities. As an advertising medium, outdoor advertising facilities, with their unique location, play a positive role in the quality of the enterprise's products, its social image and its cultural content. Owing to the special nature of the structure and location of outdoor advertising facilities, high quality requirements are imposed on them, and there are incidents of damage and property damage to surrounding persons due to damage and collapse of outdoor advertising facilities in bad circumstances。
1. Indicators such as the level, strength, etc. Of the base of the billboard. 2. Billboards to detect overall structural assembly and weld quality. 3. Mine avoidance, insulation, anti-corruption performance indicators for billboard tests. 4. The design, approval, installation, verification of documentary information such as billboard tests. 5. Impact on the surrounding environment upon completion of billboard tests***. Vii. What are the security screening units for outdoor billboards — the main elements of on-site testing:Steel structureThe main elements of the spot test for billboards include material detection, connection testing, size and deviation detection, defects, injury and deformation detection, structural testing and coating thickness testing. For the mechanical performance of steel, the general field sampling process is conducted in a test, and the tensile strength of existing steel structures can also be tested using surface hardness non-destructive methods. For connection detection, including weld links, weld nails, bolt connections, high-strength bolt connection detection, etc. The quality of welds is detected using ultrasound or magnetic powder methods; the connection of common bolts, anchors, nails is detected by observation or hammering; and the connection of high strength bolts is detected by observation and common wrench. For the detection of defects, injuries and deformations, the quality of steel is tested using observation or penetration methods. (b) the shape of the components can be detected by observation and size. For the tectonic test, the length and width ratio of the poles should be accounted for by their physical dimensions, together with the supporting system for the verification or evaluation of the structure with the design drawings or the corresponding design specifications, to support the connection of the system. For coating thickness detection, the surface quality of coating is observed by weight, magnifier; the thickness of coatings is determined by coating thickness, thin coatings of fire protection coatings; and the thickness of coatings of fire protection coatings is determined by needles and steel meters。
The engineer described the outer billboard steel structure as being subject to the following security tests: a wall billboard stand, a wall billboard stand should be attached to the wall of the house or building, should be determined, or should be calculated that the wall of the house or building could reliably withstand the transmission of the billboard stand and should have the necessary security reserves. Wall-based billboard stands can be welded, bolted or anchored to a pillar or beam on the wall
The pre-burial is connected. Qualified chemical anchors, bands and self-wall anchors are available
Connectivity, the use of friction-type swelling anchor links, the roof billboard substations, and the roof billboard substations should be coordinated with the roof column grid and should be able to bear the pressure, pull and shear directly from the billboard structure. Roofboard billboards may be linked by welding, bolts or anchors to pre-filled parts of the roof beam or column. Down
Quality security check for the changsha city billboard, security check for the changsha city outdoor billboard
Shenzhen construction quality testing centre limited certified
Unified social credit code
440301103600 700
Date of establishment
19 may 2005
Statutory representation
Yu hongbin
