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采用三维非线性有效应力地震反应分析及安全评价的方法,分析了德泽面板堆石坝在正常蓄水位和地震共同作用下的动力响应,包括加速度响应、应力响应和位移响应,进而分析了坝体的抗震安全性;采用动力时程线法和动力等效值法分析了面板及下游坝坡在地震作用下的边坡抗滑稳定性;在动力反应成果分析的基础上,针对性地提出了相应的大坝抗震措施.研究结果表明:德泽面板堆石坝在设计地震作用下整体是稳定的,但在强震作用下有局部损坏,可修复使用,采用相应抗震措施可减轻震害,确保大坝的整体安全.地震响应分析成果及相应的抗震措施对类似工程具有重要的参考价值.
The dynamic response of the Deze concrete face rockfill dam under normal water level and earthquakes is analyzed by three-dimensional non-linear effective stress seismic response analysis and safety evaluation method, including acceleration response, stress response and displacement response, and then analyzed The seismic safety of the dam body is analyzed. The dynamic time-history method and dynamic equivalent method are used to analyze the stability of the slope against sliding on the face plate and downstream dam under earthquake action. Based on the analysis of the dynamic response results, The corresponding dam anti-seismic measures are put forward.The results show that the Deze concrete face rockfill dam is stable under the designed seismic action, but is partially damaged by strong earthquakes and can be repaired, and the corresponding seismic measures can be used to reduce the earthquake And ensure the overall safety of the dam.The results of seismic response analysis and corresponding seismic measures have important reference value for similar projects.