首页> 外文OA文献 >Reviewing the uncertainties in seismic experimentation following the unexpected performance of RC structures in the 2010-2011 Canterbury earthquakes
【2h】

Reviewing the uncertainties in seismic experimentation following the unexpected performance of RC structures in the 2010-2011 Canterbury earthquakes

机译:回顾2010-2011年坎特伯雷地震中RC结构的意外性能后的地震实验不确定性

代理获取
本网站仅为用户提供外文OA文献查询和代理获取服务,本网站没有原文。下单后我们将采用程序或人工为您竭诚获取高质量的原文,但由于OA文献来源多样且变更频繁,仍可能出现获取不到、文献不完整或与标题不符等情况,如果获取不到我们将提供退款服务。请知悉。

摘要

The performance of conventionally designed reinforced concrete (RC) structures during the 2011 Christchurch earthquake has demonstrated that there is greater uncertainty in the seismic performance of RC components than previously understood. RC frame and wall structures in the Christchurch central business district were observed to form undesirable cracks patterns in the plastic hinge region while yield penetration either side of cracks, and into development zones, were less than theoretical predictions. The implications of this unexpected behaviour: (i) significantly less available ductility; (ii) less hysteretic energy dissipation; and (iii) the localization of peak reinforcement strains, results in considerable doubt for the residual capacity of RC structures. The significance of these consequences has prompted a review of potential sources of uncertainty in seismic experimentation with the intention to improve the current confidence level for newly designed conventional RC structures. This paper attempts to revisit the principles of RC mechanics, in particular, to consider the influence of loading history, concrete tensile strength, and reinforcement ratio on the performance of ‘real’ RC structures compared to experimental test specimens.
机译:传统设计的钢筋混凝土(RC)结构在2011年克赖斯特彻奇地震中的性能表明,RC组件的抗震性能比以前理解的不确定性更大。观察到克赖斯特彻奇中央商务区的RC框架和墙结构在塑料铰链区域形成了不良的裂纹图案,而裂纹两侧的屈服渗透率和进入开发区的渗透率均小于理论预测。这种意外行为的含义:(i)延展性大大降低; (ii)减少滞后能量耗散; (iii)峰值钢筋应变的局部化,使得人们对钢筋混凝土结构的剩余承载力产生了极大的怀疑。这些后果的重要性促使人们回顾了地震实验中潜在的不确定性来源,以期提高新设计的常规RC结构的当前置信度。本文尝试重新研究RC力学原理,尤其是要考虑荷载历史,混凝土抗拉强度和配筋率对“真实” RC结构性能的影响(与实验试样相比)。

著录项

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