...
  • 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Bulletin of Earthquake Engineering >Seismic response of poro-elastic seabed and composite breakwater under strong earthquake loading
【24h】

Seismic response of poro-elastic seabed and composite breakwater under strong earthquake loading

机译：强地震作用下孔隙弹性海床和复合防波堤的地震响应

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 marine structures in offshore area, such as composite breakwater, are generally vulnerable to the strong seismic wave propagating through their seabed foundation. There are a lot of failure examples during the strong earthquake events in the world in the past 20 years. However, attention given to the seismic response of marine structures under strong seismic wave is limited. In this study, taking the dynamic Biot’s equation “u − p” as the governing equation for porous seabed foundation, the seismic response of a composite breakwater and its porous seabed foundation under the seismic wave recorded in the Japan 311 off the pacific coast of Tohoku earthquake (M L = 9.0) is investigated using a FEM numerical model. The numerical results indicate that the seismic response of composite breakwater is very strong in the earthquake process. The amplification of the input seismic wave occurs both in seabed foundation and composite breakwater; and this amplification is positively related to the buried depth of points. The horizontal seismic response is much strong than the vertical seismic response. The seismic wave induced excess pore pressure and effective stresses in seabed foundation vibrates; the vibration amplitude is also positively related to the buried depth of points. Under strong seismic loading, the surface region of seabed foundation could liquefy. The parametric study shows that the young’s modulus of seabed foundation has significant effect on the seismic response of composite breakwater.
机译：近海区域的海洋结构，例如复合防波堤，通常容易受到通过其海床基础传播的强烈地震波的影响。在过去的20年中，世界上发生的强烈地震事件中有很多失败的例子。但是，对强地震波作用下海洋结构的地震响应的关注是有限的。在这项研究中，以动态毕奥特方程“ u-p”作为多孔海底基础的控制方程，在日本东北太平洋沿岸的日本311记录的地震波作用下，复合防波堤及其多孔海底基础的地震响应使用FEM数值模型研究了地震（M L = 9.0）。数值结果表明，复合防波堤在地震过程中的地震响应非常强。输入地震波的放大作用发生在海床基础和复合防波堤中。并且这种放大与点的掩埋深度正相关。水平地震响应比垂直地震响应强得多。地震波在海底基础振动中产生了过大的孔隙压力和有效应力。振动幅度也与点的埋深成正比。在强地震作用下，海床基础的表面区域可能会液化。参数研究表明，海底地基的杨氏模量对复合防波堤的地震响应具有重要影响。

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