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本文应用ANSYS有限元软件建立某大型直流电压发生器塔架结构的有限元分析模型,分别计算结构在正弦共振调幅五波、正弦共振三波、Taft地震波、El-Centro地震波和云南澜沧地震波5种地震动激励下的响应,以及结构在10m/s和35m/s两种风荷载工况下的响应。并按规范要求将上面两种计算结果与结构自身重力进行组合,计算结构在地震与风的共同作用下的安全系数。计算结果表明,对于该结构体系,地震作用要远大于风的作用,而在5种地震波中,正弦共振三波五波产生的地震反应要大于其它3种实测地震波产生的反应。
In this paper, ANSYS finite element software is used to establish the finite element analysis model of a tower structure of a large DC voltage generator. Five types of structures including sinusoidal resonance amplitude modulation five-wave, sine wave three-wave, Taft wave, El-Centro wave and Yunnan Lancang wave are calculated respectively. Response under earthquake excitation and the response of the structure under two wind loads of 10m / s and 35m / s. According to the specification, the above two calculation results are combined with the gravity of the structure itself to calculate the safety factor of the structure under the joint action of the earthquake and the wind. The results show that for the structural system, the seismic action is far greater than that of the wind. In the five kinds of seismic waves, the three-wave and five-wave sine responses have more seismic responses than the other three kinds of measured seismic waves.