岩土工程学报2012，Vol.34Issue(9)：1590-1597,8.
河谷地形对高土石坝动力反应特性影响的分析
Effect of valley topography on dynamic response properties of high earth-rockfill dams
摘要
Abstract
Three-dimensional nonlinear dynamic elasto-plastic analysis method is employed to study the seismic response characteristics of a high earth-rockfill dam in a narrow valley. The distribution rules of shear strain and permanent displacement are given with different topographies of valley. The results show that the dynamic response of the dam exhibits strong spatial three-dimensional effect of valley topography and that the shear strain and displacement of the dam has significant effects. For the symmetrical valley, the distribution of shear strain is extending out in an oval shape, and the maximum value appears at the crest of the core wail. When the shape factor of the ratio （L/H） is smaller, the constraint to the dam is stronger, and the displacement increases more obviously. Under the same ratio, the settlement of dam crest under a wider valley is larger than that under a gentler slope. The results are valuable for the design of high earth-rockfill dams with a narrow valley in meizoseismal areas.关键词
高土石坝/河谷形状/永久变形/剪应变Key words
high earth-rockfill dam/valley topography/permanent deformation/shear strain分类
建筑与水利引用本文复制引用
朱亚林,孔宪京,邹德高,朱寿义..河谷地形对高土石坝动力反应特性影响的分析[J].岩土工程学报,2012,34(9):1590-1597,8.基金项目
国家自然科学基金重大研究计划项目（90815024）：国家自然科学基金面上项目（51179043）：合肥工业大学发展基金项目（2010HGZ0014）：中央高校基本科研业务费专项资金项目 （）
