Numerical Simulation Of The Wind Load And Analysis Of Wind Vibration Of Latticed Dome

In recent years,because of their various forms and good mechanical behavior, long-span spatial structures had a field that developed very fast.With the use of new lightweight materials,structural design and technique of computer simulation,the development of space for long-span structure will provide a favorable environment conditions.At present,long-span structure are widely used in exhibition halls,theaters, hangars,terminals,stadiums,warehouses,dry coal shed,industrial plants and other buildings.Latticed dome are light weight,large flexibility,small damp,it is very sensitive to wind load,in some cases,wind load may be referred to as the structural design control loads,so the response of latticed dome to wind-induced vibration analysis has become particularly important.Based on the linear filtering method,the time and space correlative wind speed time-history simulation program for spatial structures is composed by Matlab.Spectrum analysis of simulated wind speed time-history records show the program is very suitable for time and space correlative wind speed time-history simulation.Based on stationary random vibration theory,obtained under fluctuating wind random single-layer latticed dome structure dynamic response characteristics and the mean displacement response,the discussed the bearing type,damping ratio,structural stiffness,geomorphology types of vector spherical single-layer latticed dome structure of the impact of wind-induced response.According to the definition of the Node displacement wind-induced coefficient,analysis the above-mentioned parameters node displacement values of wind-induced vibration coefficient,and use the regression analysis method obtained the wind-induced vibration coefficient formula of single-layer latticed dome structure for wind-resistant design of these structures provide a reference.