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Stadium cantilevered awning is a large span roof cantilevered structures , and also a large span roof cantilevered structures of the main carrier of the development of technology applications , as a novel structure , not only has a large span roof light quality , flexibility large, self - oscillation frequency and low, and because of the cantilevered structure , resulting when it is under wind load , the roof , the lower surface are subject to the force of the wind , the actual force the upper and lower surfaces wind pressure forces the typical wind sensitive structures . In this paper, of Wuhai Olympic Center Stadium for the research background , were only single the west canopy roof , the single the East pick canopy and at the same time two canopy roof conditions rigid model wind tunnel tests , based on experimental data , a two-position opposition , similar to the span , highly varied , and structural shapes and representative at the grandstand mutual interference effects between the canopy from the average wind load pressure coefficient, fluctuating wind pressure coefficients , frequency spectrum , the canopy roof suction the root of the variance , structural dynamic response aspects , expand research and in-depth analysis of the system of mutual interference effects between the two canopy roof . The the two canopy roof ANSYS finite element model were established , based on the wind pressure time of measurement points , construct non unsteady aerodynamics , get each measuring point under pressure in the actual wind farm , this data is loaded in the ANSYS finite element model , using time history analysis method the canopy roof wind induced response of calculation , further analysis of the canopy roof interference effects of wind-induced response . Based on modal analysis , based on the measuring point wind loads , constructing the generalized force spectrum , the use of stationary random excitation Linear system random vibration mode superposition method power calculation procedures SFSP , the preparation of the frequency domain . In the preparation of the program , consider the modal coupling term and the force spectrum cross items of impact and application of this procedure to analyze the canopy roof in pulsating displacement wind caused loud interference effects , and calculated with the time history analysis results carried out a comparative . The results show that the results are in good agreement with the pulse of canopy roof displacement response analysis with time-domain method , canopy stadium frequency domain method to consider the impact of the higher modes .
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