...
  • 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Earthquake Engineering & Structural Dynamics >Modelling of R/C members accounting for shear failure localisation: Hysteretic shear model
【24h】

Modelling of R/C members accounting for shear failure localisation: Hysteretic shear model

机译：考虑剪切破坏位置的R / C构件模型：滞后剪切模型

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

Reinforced concrete (R/C) frame buildings designed according to older seismic codes represent a large part of the existing building stock worldwide. Their structural elements are often vulnerable to shear or flexure-shear failure, which can eventually lead to loss of axial load resistance of vertical elements and initiate vertical progressive collapse of a building. In this study, a hysteretic model capturing the local shear response of shear-deficient R/C elements is described in detail, with emphasis on post-peak behaviour; it differs from existing models in that it considers the localisation of shear strains after the onset of shear failure in a critical length defined by the diagonal failure planes. Additionally, an effort is made to improve the state of the art in post-peak shear response modelling, by compiling the largest database of experimental results for shear and flexure-shear critical R/C columns cycled well beyond the onset of shear failure and/or up to the onset of axial failure, and developing empirical relationships for the key parameters defining the local backbone post-peak shear response of such elements. The implementation of the derived local hysteretic shear model in a computationally efficient beam-column finite element model with distributed shear flexibility, which accounts for all deformation types, will be presented in a companion paper.
机译：根据较早的地震法规设计的钢筋混凝土（R / C）框架建筑物在全球范围内占现有建筑物的很大一部分。它们的结构元件通常容易受到剪切或挠曲-剪切破坏，最终可能导致垂直元件的轴向载荷损失，并引发建筑物的垂直渐进倒塌。在这项研究中，详细描述了滞后模型，该模型捕获了剪切不足的R / C元素的局部剪切响应，并着重于峰后行为。它与现有模型的不同之处在于，它考虑了在剪切破坏发生后在由对角破坏平面定义的临界长度内的剪切应变的局部化。此外，通过汇编最大周期的剪切和弯曲剪切临界R / C柱的实验结果的最大数据库，努力改善峰后剪切响应建模的最新技术，该循环远远超过了剪切破坏和/或直至轴向破坏的开始，并为确定这些元素的局部骨干峰后剪切响应的关键参数建立经验关系。伴随文件中将介绍在计算有效的，具有分布剪切弹性的梁-柱有限元模型中导出的局部滞后剪切模型的实现方式，该模型考虑了所有变形类型。

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