期刊论文

Xia, Dongzhou(16400386@qq.com)

中文

中南大学学报(自然科学版)

1672-7207

2015

46

9

3481-3487

10.11817/j.issn.1672-7207.2015.09.043

国家自然科学基金资助项目（51378083,51408060）； 湖南省自然科学基金资助项目（13JJ3071）~~；

本校为第一且通讯机构

运用Davidenkov地基模型,选取合理的模型参数实现对土体非线性性质的有限元模拟,并考虑土体边界条件、土体与坝体间接触界面状态非线性、地基土辐射阻尼以及坝体与土体耦合阻尼比等因素,对土-堆石坝动力相互作用(SRDI)体系动力特性进行ANSYS有限元模拟与分析。研究结果表明:软土地基对地震作用的放大效应会导致土体加速度和位移幅值随深度减小而变大,土与坝体的材料阻尼以及土与坝体接触界面间的阻尼效应减小坝体的动力反应,改善土-堆石坝体系的整体抗震性能,可为堆石坝工程的设计与实践提供参考。

Based on Davidenkov soil model with proper parameters, the simulation of soil nonlinearity was realized by finite element method. The dynamic property of soil-rockfill dam-dynamic-interaction(SRDI) system was studied by ANSYS finite element method, and some problems such as the boundary condition of soil, state nonlinearity of contact boundary between soil and dam, radiation damping of soil, and the coupling damping ratio of soil and dam were considered. The results show that acceleration and displacement of soil increase sharply with the decre...