混凝土面板堆石坝自振周期的简化公式

A Simplified Formula of the Natural Period of CFRD

针对用原有的计算堆石坝自振周期经验公式与实测值有一定差别的问题，以混凝土面板堆石坝（ＣｏｎｃｒｅｔｅＦａｃｅｄＲｏｃｋｆｉｌｌＤａｍｓ，以下简称为ＣＦＲＤ）为研究对象，考虑坝高、堆石材料性质、面板和边坡坡比等对ＣＦＲＤ自振周期的影响，结合已建的ＣＦＲＤ堆石材料动力特性，提出了ＣＦＲＤ自振周期简化公式。这一公式对ＣＦＲＤ，尤其是ＣＦＲＤ高坝的抗震设计和地震反应分析具有实用价值。

The natural periods of rockfill dams calculated by empirical formula deviate from the measured values.In this paper,a simplified formula of natural period of concrete faced rockfill dams (they are abbreviated toCFRD as follows) is presented by using the finite element method to calculate the natural period of CFRDon account of the influence of dam height,property of material,face plate and side slope. This formula is ofpractical value to aseismic design and earthquake response analysis of CFRD,especially to those of highCFRD.