• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Earthquake Engineering & Structural Dynamics >A regularized fiber element model for reinforced concrete shear walls
【24h】

A regularized fiber element model for reinforced concrete shear walls

机译：钢筋混凝土剪力墙的正则化纤维单元模型

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 shear walls are used because they provide high lateral stiffness and resistance to extreme seismic loads. However, with the increase in building height, these walls have become slenderer and hence responsible of carrying larger axial and shear loads. Because 2D/ 3D finite element inelastic models for walls are still complex and computationally demanding, simplified but accurate and efficient fiber element models are necessary to quickly assess the expected seismic performance of these buildings. A classic fiber element model is modified herein to produce objective results under particular loading conditions of the walls, that is, high axial loads, low axial loads, and nearly constant bending moment. To make it more widely applicable, a shear model based on the modified compression field theory was added to this fiber element. Consequently, this paper shows the formulation of the proposed element and its validation with different experimental results of cyclic tests reported in the literature. It was found that in order to get objective responses in the element, the regularization techniques based on fracture energy had to be modified, and nonlinearities because of buckling and fracture of steel bars, concrete crushing, and strain penetration effects were needed to replicate the experimental cyclic behavior. Thus, even under the assumption of plane sections, which makes the element simple and computationally efficient, the proposed element was able to reproduce the experimental data, and therefore, it can be used to estimate the seismic performance of walls in reinforced concrete buildings. Copyright (C) 2016 John Wiley & Sons, Ltd.
机译：之所以使用钢筋混凝土剪力墙，是因为它们具有较高的侧向刚度并能抵抗极端的地震载荷。然而，随着建筑物高度的增加，这些壁变得更细长，因此承担更大的轴向和剪切载荷。由于墙的2D / 3D有限元非弹性模型仍然很复杂且计算要求很高，因此必须使用简化但准确有效的纤维元模型来快速评估这些建筑物的预期抗震性能。本文中对经典纤维元件模型进行了修改，以在壁的特定载荷条件下产生客观结果，即高轴向载荷，低轴向载荷和几乎恒定的弯曲力矩。为了使其更广泛地适用，在此纤维元件上添加了基于改进压缩场理论的剪切模型。因此，本文显示了提出的元素的配方及其在文献中报道的循环试验的不同实验结果中的验证。发现为了获得单元中的客观响应，必须修改基于断裂能的正则化技术，并且由于钢筋的屈曲和断裂，混凝土压碎和应变渗透效应需要非线性，以复制实验循环行为。因此，即使在平面截面的假设下（这使得该单元简单且计算效率高），所提出的单元也能够再现实验数据，因此，可用于估计钢筋混凝土建筑物中墙体的抗震性能。版权所有（C）2016 John Wiley＆Sons，Ltd.

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