摘要
研究面板堆石坝堆石体的蠕变变形对于维持大坝安全稳定运行有重要意义。为寻找最理想的堆石体蠕变模型并确定其模型参数,结合五座面板堆石坝工程实例,对三种常用堆石体蠕变模型进行了原型验算和比较。结果表明,指数模型计算的蠕变量最接近实际情况。最后分析了指数模型的参数确定方法,得到较为合理的结果,可为其他堆石坝的沉降量估算提供参考。
The study of the rockfill creep deformation has important significance for the safety and stability operation of the CFRDs. In order to find the most ideal model and determine the model parameters for rockfill creep, taking five CFRDs as examples, three kinds of commonly rockfill creep model were compared based on the prototype. The results show that the creep deformation calculated by the index model was closest to the actual situation. Finally, the determina- tion method of index model parameters was analyzed, and a reasonable result was gained, which can provide reference for settlement estimation of other rockfill dams.
出处
《水电能源科学》
北大核心
2015年第7期92-93,203,共3页
Water Resources and Power
基金
国家自然科学基金项目(51179024
51379029)
关键词
面板坝
堆石蠕变
数学模型
原型验证
CFRD
rockfill creep
mathematical model
prototype verification
