【摘要】 研究预应力蛋形消化池与其内部流体相互耦合作用下的地震响应分析问题。通过ANSYS程序建立了计算流固耦合体系的有限元模型,分析比较了耦合效应对结构动力特性的影响,给出了结构的自振频率、模态、地震响应加速度、位移以及池体的应力。与国内首次模拟地震振动台试验结果进行了比较,两者符合良好,表明该有限元计算模型是合理的,可以应用于类似特种结构。更多还原

【Abstract】 A study on the interaction between the prestressed egg-shaped digester and liquid is performed in the paper. Through the computer program ANSYS, seismic evaluation of the digester is performed using a 3D finite-element model that includes the effect of fluid-solid interaction. The influence of coupling interaction on dynamic characteristic is analyzed. Natural frequencies, mode shapes, static response and dynamic response including the response acceleration, response displacement and response stress were calculated. Comparisons of calculated responses and those of shaking table tests for the first time in China show reasonably good agreement. It demonstrates that this finite-element model is reasonable and can be applied to the engineering design.更多还原