【摘要】 地震残余变形是评价土石坝抗震安全性能的重要指标,作为土石坝筑坝材料的粗粒土的残余变形特性又是抗震安全评价的基础。本文在国内外有关研究进展进行分析和评述的基础上,考察了诸如密度、颗粒级配、固结应力状态、动荷载幅值和排水条件等因素对土石料残余变形特性的影响,指出土的应力历史、颗粒级配、几何形状及母岩强度以及排水条件等影响因素研究资料还很缺乏,还有待开展研究;对目前几个应用较为广泛的残余变形模型以及存在问题进行了分析,并提出了进一步改进的建议。更多还原

【Abstract】 The earthquake residual deformation is an important index to evaluating the seismic safety perfor-mance of earth-rock dams. According to the researches in the field, the influence of the main factorswhich plays an important role in the residual deformation characteristics of earth-rock materials was ana-lyzed in this paper,such as density,particle gradation,consolidation stress state,dynamic load amplitudeand drainage condition. It is pointed out that there is shortage of the researches of soil stress history,parti-cle gradation,geometrical shape,rock strength and drainage condition,and it is necessary to do further re-search. The problems of residual deformation models have been analyzed and some suggestions. have beenput forward.更多还原