...
  • 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Bulletin of earthquake engineering >Optimal design of isolation devices for mid-rise steel moment frames using performance based methodology
【24h】

Optimal design of isolation devices for mid-rise steel moment frames using performance based methodology

机译：基于性能的方法学中升钢时刻帧的隔离装置的最优设计

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 develops and applies the performance-based analysis and design methodology to assess the seismic vulnerability of mid-rise steel moment frame structures and to optimally design the isolation devices to reduce the direct losses due to earthquake damages. An isolated steel moment frame, originally tested in the 2011 E-Defense blind prediction contest, is selected and modeled in detail. The numerical model and the predicted seismic responses of the structure are validated against the full-scale shaking table test results. Subsequently, the fragility functions are derived for the structure when subject to near-fault ground motions exhibiting distinctive acceleration or velocity pulses and far-field motions with less impulsive characteristics. To quantify the system level damage states of the building, the concept of total loss ratio (TLR) is applied as the performance index to account for the direct loss due to structural, non-structural and isolation components in relation to the total repair cost of the original structure. The TLR considers the failure probability (as defined by fragility functions), the damage percentage and related cost for each damage state. Finally, among various isolation designs, the optimal configuration is derived for cases with the minimum TLR. It is shown that the optimal design can reduce the TLR up to 90% of that of the un-isolated structure and it also outperforms the adopted design in the test program. The study demonstrates a systematic way of achieving the optimal isolation design with considerations of uncertainties in earthquake inputs and the combined structural and non-structural damages.
机译：本文开发和应用基于性能的分析和设计方法，以评估中升钢矩框架结构的地震脆弱性，并最佳地设计隔离装置，以降低由于地震损坏而降低直接损失。选择并详细建模最初在2011年电子防御盲预测竞赛中进行的孤立的钢矩框架。该结构的数值模型和预测的地震反应针对满量程振动表测试结果验证。随后，当受到具有较小脉冲特性的特殊加速度或速度脉冲和远场运动的近故障接地运动时，导出脆弱功能。为了量化建筑物的系统级损害状态，总损失比（TLR）的概念被应用为性能指数，以考虑由于结构，非结构和隔离组件有关的总修复成本而导致的直接损失原始结构。 TLR考虑失败概率（如脆弱函数定义），每个损坏状态的损伤百分比和相关成本。最后，在各种隔离设计中，对于具有最小TLR的情况来导出最佳配置。结果表明，最佳设计可以将TLR降低到未分离的结构的TLR，并且它还优于测试程序中采用的设计。该研究表明，通过考虑地震投入的不确定性和组合结构和非结构损坏，实现了实现最佳隔离设计的系统方法。

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