...
首页> 外文期刊>Steel & Composite Structures: An International Journal >Demands and distribution of hysteretic energy in moment resistant self-centering steel frames
【24h】

Demands and distribution of hysteretic energy in moment resistant self-centering steel frames

机译:耐力矩自定心钢框架中滞回能量的需求和分布

获取原文
获取原文并翻译 | 示例
   

获取外文期刊封面封底 >>

       

摘要

Post-tensioned (PT) steel moment resisting frames (MRFs) with semi-rigid connections (SRC) can be used to control the hysteretic energy demands and to reduce the maximum inter-story drift (gamma). In this study the seismic behavior of steel MRFs with PT connections is estimated by incremental nonlinear dynamic analysis in terms of dissipated hysteretic energy (E-H) demands. For this aim, five PT steel MRFs are subjected to 30 long duration earthquake ground motions recorded on soft soil sites. To assess the energy dissipated in the frames with PT connections, a new expression is proposed for the hysteretic behavior of semi-rigid connections validated by experimental tests. The performance was estimated not only for the global E-H demands in the steel frames; but also for, the distribution and demands of hysteretic energy in beams, columns and connections considering several levels of deformation. The results show that E-H varies with gamma, and that most of E-H is dissipated by the connections. It is observed in all the cases a log-normal distribution of E-H through the building height. The largest demand of E-H occurs between 0.25 and 0.5 of the height. Finally, an equation is proposed to calculate the distribution of E-H in terms of the normalized height of the stories (h/H) and the inter-story drift.
机译:具有半刚性连接(SRC)的后张紧(PT)钢制抗力矩框架(MRF)可用于控制滞后能量需求并减少最大层间漂移(γ)。在这项研究中,通过耗散磁滞能量(E-H)需求,通过增量非线性动力学分析,估算了具有PT连接的MRF钢MRF的抗震性能。为此,对五个PT钢MRF进行了30次长时间记录在软土地上的地震地面运动。为了评估具有PT连接的框架中耗散的能量,针对通过实验测试验证的半刚性连接的滞后行为,提出了一个新表达式。不仅针对全球钢框架中的E-H需求评估了性能,而且还评估了性能。而且还考虑了多个变形水平,梁,柱和连接中的滞回能量的分布和要求。结果表明,E-H随伽玛值而变化,并且大多数E-H被连接消散。在所有情况下都可以观察到E-H在整个建筑物高度上的对数正态分布。 E-H的最大需求发生在高度的0.25至0.5之间。最后,提出了一个方程,根据层的归一化高度(h / H)和层间漂移来计算E-H的分布。

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