基于ADINA的重力坝地震响应分析
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摘要
针对云南阿海重力坝,利用大型有限元软件ADINA分别基于流固耦合理论和Westergaard附加质量方法建立了动力数值分析模型,并进行了自振特性和地震响应计算。结果表明,两种模型的自振频率较接近,附加质量模型的地震响应大于流固耦合模型。在重力坝抗震研究中,利用ADINA的流固耦合模型考虑水体的影响更接近实际工程。
With an aim at a gravity dam in Yunnan,a seismic numerical analysis model by use of ADINA soft ware is established on the basis of the dynamic fluid-structure coupling theory and the additional mass method,and the self-vibration frequency and the seismic response of the dam structure are analysed.The results indicate that self-vibration frequencies of two models are approximately the same and the seismic response with additional mass is larger than corresponding result with the fluid-structure coupling.Therefore,in the gravity dam seismic research the method using fluid-structure coupling and considering effect of water is more adaptive to practical project.
With an aim at a gravity dam in Yunnan,a seismic numerical analysis model by use of ADINA soft ware is established on the basis of the dynamic fluid-structure coupling theory and the additional mass method,and the self-vibration frequency and the seismic response of the dam structure are analysed.The results indicate that self-vibration frequencies of two models are approximately the same and the seismic response with additional mass is larger than corresponding result with the fluid-structure coupling.Therefore,in the gravity dam seismic research the method using fluid-structure coupling and considering effect of water is more adaptive to practical project.
引文
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