When the LED display screen is installed, there is a special support structure. Only by using the special support structure can the LED display screen be more solid. The LED display support structure is divided into three types: floor type, wall-mounted type and roof type. The stress and strain characteristics of each type of support structure system are different. YONGS LED display screen will introduce the roof support structure to you today.
The roof-type support structure needs to be designed in combination with the original structural layout of the roof. It is very important to make full use of the original main structural system to bear the load to optimize the roof-type support structure system. Usually, various structural forms such as plane truss, space truss or grid structure can be used in combination with building modeling. The structural scheme is flexible and changeable, and finite element analysis software can be used for modeling analysis and calculation. According to the characteristics of light steel on the roof, attention should be paid to the particularity of the natural vibration period and the whiplash effect. It is advisable to establish an integral model of the roof-type support structure and the building for finite element analysis, and to study the stress-strain characteristics of the support structure.
The roof-type support structure belongs to the space structure system, and there are many types of connection methods between it and the main structure, which need to be determined according to the actual top of the main structure. The mechanical performance of different structure types is very different. Only by using the finite element method to analyze the mechanical state of the overall spatial structure can a practical design scheme be obtained.
Combined with the grid structure formed by the shear wall protruding from the main structure of the actual project and the supporting points arranged on the top of the lower column, the steel columns and the transverse steel beams supported on the shear wall are 90 mmx90 mmx5 mm, and the transverse secondary steel beams are combined double The angle steel is 2xL40 x4, and the sloping web bar adopts the combined double angle steel 2xL30 x3. The total mass of steel used is 13 900 kg, the stress at the root of the column member is 600 xi maximum, and its value is 133 N/mm2, the stress of the other members is not greater than N/mm2, and the maximum deformation in the plane is 3.08 mm, which meets the deformation requirements (6) . The space truss structure system is adopted, and the components are all made of square steel pipes. The column and transverse steel beam support members are 100 mm100 mm5 mm, the secondary steel beams are 80 mm80 mm5 m, the diagonal web bars are 60 mm60 mm4 mm, the maximum stress value is 135 N/mm2, and the maximum deformation is 135 N/mm2. The value is 3.08 mm, and the total mass of the steel is 14100 kg.
Comparing the two structure types, it can be seen that the stress and strain of the grid structure system with the same weight and the space truss structure system are similar, and the effects of the two structure systems are similar. Considering factors such as construction difficulty and maintenance convenience, the roof-type support structure should be in the form of a space truss.
