...
  • 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Earthquake Engineering & Structural Dynamics >Numerical simulation of reinforcement strengthening for high-arch dams to resist strong earthquakes
【24h】

Numerical simulation of reinforcement strengthening for high-arch dams to resist strong earthquakes

机译：高拱坝抗震加固的数值模拟

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

This paper focuses on analyzing the nonlinear seismic response of high-arch dams with cantilever reinforcement strengthening. A modified embedded-steel model is presented to evaluate the effects of the strengthening measure on alleviating the extension and opening of cracks under strong earthquakes. By stiffening reinforced steel, this model can easily consider the steel-concrete interaction for lightly reinforced concrete (RC) members without the need of dividing them into RC and plain concrete zones. The new tensile constitutive relations of reinforced steel are derived from the load-deformation relationship of RC members in direct tension. This model has been implemented in the finite element code and its applicability is verified by two numerical simulations for RC tests. Subsequently, numerical analyses for a 210-m high-arch dam (Dagangshan arch dam) are conducted with and without the presence of cantilever reinforcement. Numerical results show that reinforcement strengthening can reduce the nonlinear response of the arch dam, e.g. joint opening and crest displacement, and limit the extension and opening width of concrete cracks.
机译：本文重点分析悬臂加固加固高拱坝的非线性地震反应。提出了一种改进的嵌入式钢模型，以评估加强措施对减轻强地震作用下裂纹扩展和开裂的影响。通过加固钢筋，该模型可以轻松地考虑轻型钢筋混凝土构件的钢筋混凝土相互作用，而无需将其分为钢筋混凝土和普通混凝土区域。钢筋的新的拉伸本构关系是从钢筋混凝土构件在直接拉伸中的荷载-变形关系得出的。该模型已在有限元代码中实现，并且通过两个用于RC测试的数值模拟验证了其适用性。随后，对有无悬臂加固的210米高拱坝（大港山拱坝）进行了数值分析。数值结果表明，加强加固可以减少拱坝的非线性响应，例如接头的开度和波峰位移，并限制了混凝土裂缝的延伸和开度。

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