How to formulate the maintenance and management scheme of outdoor advertising

Strengthen the management of outdoor advertising in various places.

In order to reduce and fundamentally eliminate the harm of outdoor advertising, a lot of outdoor advertising management measures have been introduced in various places. In the upcoming outdoor advertising plan, Xi 'an stipulates that the advertising height on the roof of buildings in urban areas should not be higher than 6 meters; Banners and cloth curtains are strictly prohibited from hanging on the facade of the building; The height of all shop plaques shall not exceed1.5m; The billboard on the wall of the construction site should be set in the wall, and its height should be below 6 meters above the wall.

The Measures for the Administration of Outdoor Advertising in Xiamen Special Economic Zone, which came into effect in July 1 year, also clearly stipulates that outdoor advertising publishers who fail to maintain or update outdoor advertising facilities in time and cause personal and property damage to others shall bear civil liability according to law.

Facing the arrival of flood season, some cities have strengthened the safety management of outdoor billboards. Recently, the Shanghai Flood Control and Taiwan Prevention Headquarters conducted a special safety inspection on outdoor billboards in urban areas, dismantled ultra-high and large advertising facilities with potential safety hazards, and stipulated that advertising and non-advertising facilities should not be set up in high-rise buildings over 60 meters in the future; At present, the outdoor advertising facilities of high-rise buildings over 60 meters will not be extended after the expiration, and all of them will be demolished; At the same time, the city appearance and environmental sanitation department will revise relevant norms and administer according to law.

In an urgent notice issued in early July, Nanjing Housing Authority asked all advertising business units and related units in Nanjing to do a good job in the safety management of outdoor advertisements and signboards to prevent damage caused by typhoons and rainstorms. Units that have not taken preventive measures or caused adverse consequences due to the failure to implement preventive measures will be investigated for relevant leadership responsibilities.

On July 14, Zhengzhou Municipal Bureau held a special meeting to strengthen the early warning mechanism of outdoor advertising. The Urban Council issued a notice to more than 80 advertising companies and advertising units, demanding a comprehensive safety inspection of large-scale outdoor advertisements to completely eliminate hidden dangers.

Reinforcement and maintenance methods of outdoor advertising

It can be seen that the safety of outdoor advertising has risen to a social problem. In order to fundamentally solve the harm of "outdoor killer", in addition to strengthening management, regular inspection and nip in the bud, outdoor advertising construction departments should also strictly control the quality in the construction process and pay attention to the daily maintenance and reinforcement of billboards.

Billboards are mostly steel structures. As early as one year ago, in July, 2003, China Engineering Construction Standardization Association issued Technical Specification for Steel Structures of Outdoor Advertising Facilities (CECS 148: 2003. Hereinafter referred to as the "Regulations"), the setting and maintenance of outdoor advertising are specified and explained in detail. According to the Regulations, there are two reasons why outdoor billboards become killers: one is the unstable foundation of billboards, and the other is the aging and brittle crack of rigid structures. This paper discusses the reinforcement and rectification of foundation and the reinforcement and maintenance of steel structure in detail, and now introduces the relevant contents to you for reference by relevant construction units.

Causes of foundation instability and methods of reinforcement and rectification

Usually, the load supporting outdoor billboards is called foundation, and floor-standing billboards are based on soil or rock mass, which can be divided into artificial foundation and natural foundation. Building billboards and wall billboards are based on roof structure and wall structure. For outdoor billboards, foundation setting is very important, which is directly related to the normal use of outdoor billboards. Common billboard foundation engineering accidents are mostly caused by the following reasons: insufficient foundation bearing capacity leads to foundation instability; The foundation soil is too soft, and the foundation inclines after long-term load; The change of surrounding geological environment leads to the expansion or contraction of foundation soil; The wall billboard support is loose and damaged; Uneven settlement of building billboards caused by external factors (including strong wind and brutal construction, etc.). ).

The occurrence of foundation engineering accidents is mainly caused by improper investigation, design, construction or changes in the use environment. After the foundation is unstable, the outdoor billboard foundation should be reinforced and rectified in time. Before the implementation plan is determined, the following investigations should be done: (1) Find out the soil and hydrological conditions in the area where the foundation is located; (2) Consult the original data to understand the basic form, stress state and design bearing capacity of the billboard; (3) Investigate the quality of building materials used in billboard construction, the weather conditions during construction and the construction quality of the whole billboard; (4) Investigate the changes of the surrounding environment during the use of billboards, such as the construction of municipal facilities, the commencement of nearby buildings, the fluctuation of groundwater level, the changes of ground drainage system, etc.

If the crux of the unstable foundation of outdoor billboards is made clear, effective reinforcement and rectification measures can be formulated on this basis.

At present, there are several ways to strengthen the foundation of outdoor billboards:

(1) foundation expansion method: by setting concrete enclosure or reinforced concrete enclosure, the area of the foundation at the bottom of the billboard is increased, and the uneven settlement of the foundation caused by the small foundation area and insufficient bearing capacity of the billboard is changed.

(2) Pit underpinning method: directly dig a pit under the underpinning foundation, and then pour concrete.

(3) Pile underpinning method: static pressure columns, driven piles, cast-in-place piles and other piles are arranged at the lower part or both sides of the billboard foundation to reinforce the foundation.

(4) Grouting underpinning method: chemical grout is evenly injected into the foundation, and the original loose soil or cracks are cemented and solidified by these grout, so as to improve the bearing capacity of the foundation and achieve the purpose of waterproofing and seepage prevention.

Correction is to use artificial means to make the inclined foundation tilt reversely, so as to correct the inclination of outdoor billboards. Commonly used outdoor billboard foundation rectification methods are as follows:

(1) forced landing rectification method: one side of outdoor billboard foundation adopts settlement prevention measures, and the other side adopts forced landing measures. The methods of forced landing include: loading steel ingots or stones, building cantilever beams, digging out soil, and injecting water to correct deviation.

(2) Jack-up rectification method: in the position where the foundation of the inclined billboard has a large settlement, the jack-up amount of each part of the billboard is adjusted to make it rotate along a certain point or straight line in the whole plane, so as to achieve the purpose of restoring the original position.

Maintenance and reinforcement of rigid frame

Because the strength of steel is higher than other common engineering materials, the main supporting structure of outdoor billboards usually adopts steel. However, in the open air environment, due to temperature, humidity, harmful substances and other factors, steel is prone to oxidative corrosion, and serious corrosion will greatly reduce the bearing capacity of steel members; Rigid materials have good toughness, but they are also prone to embrittlement and fracture under long-term load or low temperature. In addition, in the design and construction process of outdoor billboards, there are defects in local or even overall stability; Or in the process of use, maintenance and modification, the overall imbalance is caused by bolt looseness, overload, external impact and other reasons; In addition, the main structure of outdoor billboards is constructed with inferior steel; Regardless of its bearing capacity, welding other steel plates on billboards at will will have serious consequences.

During the routine maintenance of the rigid frame, the following points should be noted:

Strict selection of materials. When selecting steel, the chemical composition and mechanical properties of steel used in steel structure should be tested, and the appearance of steel should be inspected. Materials with cracks, rust spots, scars and other defects should be scrapped.

Careful construction. In the process of billboard construction, it is necessary to avoid damaging the appearance of the steel used, and it is strictly forbidden to punch and weld the key stress parts.

Regular testing. After the billboard is put into use, its safety should be checked regularly, and the damaged and aging parts should be replaced in time. If the main components are seriously aged or damaged, reinforcement measures should be considered.

Pay attention to anti-corrosion. The most commonly used anti-corrosion measures for steel are: painting on the surface of steel, or spraying metal protective layer on the surface of components; Different metal contacts can also cause corrosion. If different metal materials are used in the structure, the contact surface should be insulated. In addition, attention should also be paid to the placement of materials in the design to avoid the corrosion of materials caused by water accumulated on the steel uphill.

When the outdoor billboard steel structure has design defects or is damaged by external forces, which affects its firmness, it should be reinforced in time. There are many ways to strengthen steel structures, which can be summarized as follows:

Enlarge the stress section. This method is widely used in the reinforcement of billboard support and connecting steel plates, which can improve the bearing capacity of the components, but it will also increase the weight and cost of the billboard itself and has limitations in use.

Externally prestressed tie rods or struts. This method can improve the bearing capacity and crack resistance of members. Because this method changes the stress distribution of the original whole structure, detailed mechanical calculation should be done when it is implemented.

Add a fulcrum or bracket. This method can reduce the bearing span of members, reduce the internal stress load of rigid structures, and slow down the aging and deformation of materials. More suitable for the expansion of billboards.

Supplementary fulcrum. The stability and safety factor of the whole billboard structure can be enhanced by increasing the supporting bottom plate and supplementing the number of chemical expansion bolts or planting bars.

Grouting method to repair cracks. They are repaired by injecting chemical slurry into structural cracks using pressure conveying equipment. The injected chemical slurry can repair concrete cracks, prevent rust and strengthen, and improve the overall durability of components. It is usually used for the reinforcement between the billboard foundation and the connecting steel plate.

Bonding method. This is a reinforcement method of sticking steel plates outside the members. It has the advantages of simple operation, short construction period, small occupied space and almost unchanged component shape. It is usually used to bear and strengthen the support of billboards in buildings.

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External advertising management

First, the scope of outdoor advertising registration

Outdoor advertising registration shall be handled under the following circumstances:

(a) the use of public buildings and their own space to set up street signs, neon lights, electronic display boards (screens), light boxes, windows and other advertisements.

(two) the use of transportation (including all kinds of floating objects on the water and flying objects in the air) to set up, draw and post advertisements.

(three) set up, hang or post advertisements in other forms outdoors.

Two, apply for outdoor advertising registration should have the conditions.

(1) Obtaining the business qualification consistent with the application project according to law.

(two) have the corresponding ownership of outdoor advertising media.

(three) the location and form of advertising are within the scope permitted by the state and meet the requirements of the outdoor advertising planning of the local people's government.

(four) outdoor advertising media are generally not allowed to publish all kinds of non-advertising information, if there are special needs, it should comply with the relevant provisions of the state.

Three, apply for outdoor advertising registration documents should be submitted.

(1) business license (valid copy)

(2) Advertising Business License (valid copy)

(3) Advertising contracts

(4) Site use agreement

(five) if the laws and regulations require the approval of the relevant government departments, the approval documents of the relevant departments shall be submitted.

(six) to apply for the release of non-advertising information, it shall submit the approval document for the release of non-advertising information.

Four, outdoor advertising registration procedures

(1) Apply to the administrative department for industry and commerce with jurisdiction at the place where the advertisement is published, and fill in the Application Form for Outdoor Advertisement Registration (the application shall be filed 30 days before the advertisement is published).

(2) Submit the Application Form for Outdoor Advertising Registration and submit the relevant documents required for registration.

(3) The administrative department for industry and commerce shall accept the application after the supporting documents are complete, make a decision of approval or disapproval within 7 days, and notify the applicant in writing.

(four) if it meets the requirements after examination, the registration authority shall issue the Outdoor Advertising Registration Certificate (the style is attached) and establish the outdoor advertising registration file.

Five, apply for outdoor advertising change registration procedures

(a) the need to change the registration.

Article 9 of the Regulations on the Administration of Outdoor Advertising Registration stipulates that if it has been approved, but it is necessary to extend the time or change other registered items, it shall apply to the original registration authority for change of registration.

(2) Procedures for handling change registration

1. The applicant applies for and fills in the Application Form for Outdoor Advertising Change Registration (the format is attached);

2. Submit the application form for the change of outdoor advertising registration, the application report on the matters that need to be changed, the original registration certificate and relevant supporting documents;

3. The registration authority shall, within 7 days, make a decision to approve or disapprove the change of registration, and notify the applicant in writing.

Six, for outdoor advertising cancellation registration procedures.

(1) Cancellation of registration of outdoor advertisements

If the outdoor advertisement is not released within 3 months after registration, it shall apply to the original registration authority for cancellation of registration.

(2) Procedures for cancellation of registration

L, the applicant to apply for and fill in the "outdoor advertising cancellation registration application form";

2. Submit the application form for cancellation of outdoor advertising registration, the original registration certificate and relevant supporting documents to the original registration authority;

3, the registration authority for cancellation of registration.

Seven, individual industrial and commercial households, individual urban and rural residents posted all kinds of poster advertising registration.

Registration of posters and advertisements posted by individual industrial and commercial households and individual urban and rural residents shall be handled by the applicant at the agency of the local administrative department for industry and commerce.