Analysis and design of LED display support structure

The supporting structure of LED display screen is divided into three types: floor-standing type, wall-mounted type and roof-top type. Each type of supporting structure system has different stress and strain characteristics. By comparing the three supporting structure systems through finite element analysis, the optimization scheme of the corresponding supporting structure is obtained. The results show that the cantilever column of the floor-standing support system should adopt a circular cross-section, the wall-mounted horizontal support system should adopt a combined truss, and the roof-type support structure should adopt a space truss system. The key nodes of the supporting structure are optimized and designed, and the stress state of the nodes is optimized by setting shear keys or cross-shaped stiffening ribs and other structural measures to improve the safety performance of the supporting structure.

With the development of multimedia technology, LED electronic display screens are widely used in commercial displays, producing good advertising effects. The well-designed display screen support structure can also become a beautiful landscape in urban buildings. The structural type design is usually carried out according to the construction site and building requirements in combination with the viewing distance requirements of the display screen and the characteristics of the investment region. LED display screens are usually set up in independent floor-standing forms or ancillary buildings. For the support structures of different display screen forms, their force characteristics should be accurately analyzed to select the corresponding structural form. This article will classify and summarize the support structures of LED electronic display screens, and propose the scope of application of various support structure schemes, design difficulties, and corresponding optimization design schemes and construction measures.

Floor-standing support structure

Floor-standing LED electronic display screens are mostly set up in city squares or important traffic intersections. Analysis of the stress characteristics of the support structure of the floor-standing display screen shows that the support structure should adopt a spatial steel truss structure. Four steel columns are set on the foundation to form a spatial lattice column. The upper screen body adopts a multi-layer horizontal spatial truss structure, which can meet the structural stress requirements and the setting of the maintenance channel.

Wall-mounted support structure

The urban construction density is high, and only a few areas can meet the construction conditions of floor-standing display screens. However, LED electronic display screens have the advantages of playing dynamic picture advertisements, and a large number of LED display screens need to be built in the prosperous commercial areas of the city. The solution to this contradiction is to build display screens attached to existing buildings. According to the construction conditions, renovation conditions and building height of the building, the support structure of the LED display screen attached to the building is usually divided into a wall-mounted display screen support structure and a roof-mounted display screen support structure.

Roof support structure

In actual use, wall-mounted LED electronic display screens occupy a large building facade, which will affect the building’s lighting. Therefore, wall-mounted electronic display screens are only suitable for large commercial buildings such as shopping malls. LED electronic display screens installed in office buildings and residential buildings with moderate building height can only be designed on the top of the building. In this case, the display screen support structure system should be classified as a roof display screen support structure. An LED display roof support structure is a critical component designed to hold and stabilize LED displays mounted on rooftops. These structures ensure the safety and optimal performance of the LED displays, providing secure support against various environmental conditions. This description outlines the key features, materials, design considerations, and installation process of an LED display roof support structure.

Loading

LED electronic display screens, whether floor-standing, wall-mounted or roof-mounted, need to calculate permanent loads, live loads, wind loads, snow loads, ice loads, earthquake loads and other loads. The permanent load needs to be included in the screen’s deadweight load, and the live load needs to consider the maintenance load involved in the screen maintenance. The load combination coefficient should meet the requirements of the specification.

The self-vibration period of wall-mounted or roof-mounted display screens should be analyzed as a whole in combination with the main structure. Under normal circumstances, the self-vibration period of the main structure can be used for calculation, and the impact of high vibration mode on the roof-mounted support structure should be analyzed. The calculation of wind loads should be designed and analyzed according to the enclosure structure, and large-scale support structures should be deeply analyzed according to the specific structural form. The calculation of earthquake loads should comprehensively consider bidirectional horizontal earthquakes and vertical earthquakes. For wall-mounted support structures, the impact analysis of vertical earthquakes under rare earthquakes should be paid special attention.

In addition, the electronic display screen is equipped with an electronic display unit. Long-term lighting and operation of other equipment will bring too much heat, and heat dissipation problems are prone to occur inside. There are a large number of power lines arranged inside the support structure, and problems such as line aging are also prone to fire. The display screen support structure should have sufficient resistance when such unexpected actions occur to avoid continuous collapse and damage. The design of key component support nodes needs to be strengthened to improve safety reserves.

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