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鉴于目前的井架设计规范仅有指导性原则和经验计算公式,没有针对地震工况下的井架结构动力学特性参数等分析研究,笔者利用ANSYS有限元分析软件,对井架进行相关的模态和谱响应分析,得出井架的固有频率、振型以及时间响应曲线,该结果为井架动力学特性分析、抗震设计和优化设计提供了理论依据。
In view of the fact that the current derrick design code only has the guiding principle and the empirical formula, there is no analysis and research on the dynamic characteristic parameters of the derrick under seismic conditions. The author uses ANSYS finite element analysis software to conduct the related modal and spectrum In response to the analysis, the derrick’s natural frequency, mode shape and time response curve are obtained. The results provide a theoretical basis for derrick dynamic characteristics analysis, seismic design and optimization design.