...
  • 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Structure and Infrastructure Engineering >Seismic behaviour of roller compacted concrete dams under different base treatments
【24h】

Seismic behaviour of roller compacted concrete dams under different base treatments

机译：不同碱处理下滚筒压实混凝土坝的地震行为

获取原文
获取原文并翻译 | 示例
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

The effect of base roughness on the seismic behaviour of roller compacted concrete gravity dams were investigated by pseudo-dynamically testing two 1/75 scaled specimens with smooth and rough base treatments. Both specimens were tested under the effect of three different hazard level earthquakes and also a pushover experiment was conducted to obtain the capacity curve of each specimen. The smooth base specimen exhibited significant sliding under the effect of the maximum credible earthquake motion. In contrast, the rough base specimen had no base sliding response even during the pushover experiment, whereas large body cracks reaching almost the downstream toe of the specimen was the main reason for the loss of lateral strength. The numerical simulation of these two experiments were also conducted by using the sliding response analysis and the finite element method. The base sliding response of the smooth-base specimen was simulated successfully by considering a variable friction coefficient. The finite element results for the rough-base specimen was also promising as far as the base shear and tip displacement estimations were considered. However, the crack propagation estimates were inconclusive due to the severe diffusion of the cracks.
机译：通过伪动态测试具有光滑粗糙基础处理的伪动态测试辊压实混凝土重力坝的基础粗糙度对辊压缩混凝土重力坝的地震行为的影响。在三种不同的危险水平地震的作用下测试了两个样本，并且还进行了推进实验以获得每个样本的容量曲线。平滑基地标本在最大可信地震运动的效果下表现出显着的滑动。相比之下，即使在Pushover实验期间，粗糙的基础样本也没有基部滑动响应，而达到样本的下游脚趾的大体裂纹是横向强度丧失的主要原因。还通过使用滑动响应分析和有限元法进行这两个实验的数值模拟。通过考虑可变摩擦系数成功地模拟了光滑基本样本的基础滑动响应。只要考虑基础剪切和尖端位移估计，粗基标本的有限元结果也很有希望。然而，由于裂缝的严重扩散，裂纹传播估计是不确定的。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号