...
  • 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Soil Dynamics and Earthquake Engineering >Karlsruhe fine sand under monotonic and cyclic loads: Modelling and validation
【24h】

Karlsruhe fine sand under monotonic and cyclic loads: Modelling and validation

机译：卡尔斯鲁厄细砂在单调和循环载荷下的建模与验证

获取原文
获取原文并翻译 | 示例
   

获取外文期刊封面封底 >>

       
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

In this study, a large amount of stress-dilatancy data of Karlsruhe fine sand were examined at first, where it was found that the stress-dilatancy behaviour of Karlsruhe fine sand depended on its void ratio and pressure. To capture such state-dependent stress-dilatancy behaviour, the fractional-order dilatancy equation and Li and Dafalias [1]' s dilatancy equation, were adopted and compared. In addition, a kinematic loading surface characterising the loading/unloading directions was proposed, where the current loading surface moved kinematically within the maximum loading surface. Three hardening moduli were defined for virgin loading, unloading and reloading, respectively. Further validation against a series of monotonic and cyclic test results of Karlsruhe fine sand revealed that: models based on these two dilatancy equations can simulate the drained and undrained behaviour of Karlsruhe fine sand under monotonic and cyclic loads. The unloading-induced contractive response and reloading-induced dilative response during drained loading, as well as the butterfly-shaped liquefaction response under undrained loading can be reasonably reproduced. Li and Dafalias [1]' s dilatancy equation had a relatively better match of the stress-dilatancy data.
机译：在这项研究中，首先检查了卡尔斯鲁厄细砂的大量应力-膨胀率数据，发现卡尔斯鲁厄细砂的应力-膨胀行为取决于其空隙率和压力。为了捕获这种状态相关的应力-剪胀行为，采用了分数阶剪胀方程以及Li和Dafalias [1]的剪胀方程，并进行了比较。另外，提出了表征加载/卸载方向的运动学加载表面，其中当前加载表面在最大加载表面内运动运动。分别为原始加载，卸载和重新加载定义了三个硬化模量。通过一系列卡尔斯鲁厄细砂的单调和循环试验结果的进一步验证表明：基于这两个膨胀方程的模型可以模拟卡尔斯鲁厄细砂在单调和循环载荷下的排水和不排水行为。可以合理地再现排水载荷下的卸载引起的收缩响应和重载荷诱导的膨胀响应，以及不排水载荷下的蝴蝶状液化响应。 Li和Dafalias [1]的膨胀率方程与应力-膨胀率数据具有相对较好的匹配。

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