目前，一批200～300m级高面板堆石坝正在建设或拟建在我国西部强震区域，这些高坝在地震作用下的安全问题极为重要。因此，深入开展高面板堆石坝地震响应分析理论以及抗震安全评价方法研究，对保障大坝的抗震安全具有重要意义。本项目拟联合理论分析、基础试验、数值模拟、数学统计和概率分析等手段，开展基于随机场理论的高面板堆石坝地震响应分析方法及性能安全评价研究。构建地震动和材料参数随机场生成方法；发展高效、简便的概率分析方法；联合先进的数值分析方法，开发随机场-数值分析-概率分析耦合的计算程序；开展基于随机场理论的高面板堆石坝地震响应分析和概率分析，揭示随机场效应对大坝动力响应的影响规律，阐明不同地震强度下各性能指标之间、破坏程度与破坏概率之间的耦联关系，进而形成基于性能的抗震安全评价框架。本项目的研究将为建立更加合理可靠的高面板堆石坝抗震设计方法提供理论支撑和科学依据。

At present, numerous 200~300m high concrete faced rockfill dams (CFRDs) are under construction or are to be built in the western China where strong earthquake may happen. The safety of these high dams subjected to earthquake excitation is very important. Therefore, in order to ensure the seismic safety of these dams, it is of great significance to study the theory of seismic response analysis and the method of seismic safety evaluation of high CFRDs in depth. This project combines theoretical analysis, basic experiment, numerical simulation, mathematical statistics and probabilistic analysis to carry out the research of seismic response analysis method and performance safety evaluation of high CFRDs based on random field theory. The generating methods of random field based on ground motion and material parameters are constructed, and an efficient and simple probabilistic analysis method is developed. Then, the coupled program of random field-numerical analysis-probability analysis is developed by combining the advanced numerical analysis method. Finally, the seismic response analysis and probability analysis of high CFRDs based on random field theory are performed. The influence of random field on the dynamic response of dams is revealed. In addition, the coupling relationship between different performance indexes, between failure degree and failure probability under different earthquake intensities, is clarified. Further, a framework of performance-based seismic safety evaluation is formed. The research of this project will provide theoretical support and scientific basis for establishing a more reasonable and reliable seismic design method of high CFRDs.