...
  • 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 seismic upgrading method for steel arch bridges using buckling-restrained braces
【24h】

A seismic upgrading method for steel arch bridges using buckling-restrained braces

机译：屈曲约束支撑的钢拱桥抗震升级方法

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

In this study the employment of buckling-restrained braces (BRBs) as energy dissipation dampers is attempted for seismic performance upgrading of steel arch bridges and the effectiveness of BRBs to protect structures against strong earthquakes is numerically studied. With buckling restrained, BRB members can provide stable energy dissipation capacity and thus damage of the whole structure under major earthquakes can be mitigated. Cyclic behaviour of such members is addressed with a numerical simulation model, and a strength design method for BRBs is proposed. BRBs are then placed at certain locations on the example steel arch bridge to replace some normal members with two schemes, and the effect of the two installation schemes of BRBs for seismic upgrading is investigated by non-linear time-history analyses under various ground motions representing major earthquake events. Compared with the seismic behaviour of the original structure without BRBs, satisfactory seismic performance is seen in the upgraded models, which clarifies the effectiveness of the proposed upgrading method and it can serve as an efficient solution for earthquake-resistant new designs and retrofit of existing steel arch bridges.
机译：在这项研究中，尝试使用屈曲约束支撑（BRB）作为消能阻尼器来提高钢拱桥的抗震性能，并数值研究了BRB防止结构遭受强震的有效性。通过抑制屈曲，BRB构件可以提供稳定的能量消散能力，从而可以减轻大地震对整个结构的破坏。通过数值模拟解决了此类构件的循环行为问题，并提出了一种抗剪强度的设计方法。然后将BRB放置在示例钢拱桥上的某些位置，用两种方案替换某些法向构件，并通过非线性时程分析在代表不同地面运动的情况下研究了两种BRB安装方案对地震升级的影响重大地震事件。与不带BRB的原始结构的抗震性能相比，在升级后的模型中可以看到令人满意的抗震性能，这说明了所提出的升级方法的有效性，并且可以作为抗震新设计和现有钢的改造的有效解决方案拱桥。

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