• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>International Journal of Disaster Risk Science >Life-Cycle and Seismic Fragility Assessment of Code-Conforming Reinforced Concrete and Steel Structures in Bucharest, Romania
【24h】

Life-Cycle and Seismic Fragility Assessment of Code-Conforming Reinforced Concrete and Steel Structures in Bucharest, Romania

机译：罗马尼亚布加勒斯特符合规范的钢筋混凝土和钢结构的生命周期和地震易损性评估

获取原文
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

In this article, the fragility of reinforced concrete and steel structures in Bucharest, a city of high seismic hazard, designed using the recent building codes in Romania, is assessed. A total of 24 reinforced concrete and steel structures with heights varying from five stories to 13 stories were analyzed. Their seismic fragility was evaluated using two procedures from the literature. In the first procedure (SPO2FRAG), the fragility was derived based on the pushover curves using the SPO2IDA algorithm, while in the second procedure (FRACAS), the fragility was derived from nonlinear time-history analyses. The analyzed structures were designed for three levels of peak ground accelerations, corresponding to mean return periods of 100, 225, and 475?years. Subsequently, the damage assessment of the analyzed structures was performed using ground motions generated from a Monte-Carlo simulated earthquake catalogue for the Vrancea intermediate-depth seismic source. The damage degrees that were estimated using the SPO2FRAG approach are higher than those estimated using the FRACAS approach. The life-cycle analysis of the structures shows that a further increase of the design peak ground acceleration for Bucharest is feasible from an economic point of view using the SPO2FRAG results. However, based on the FRACAS results, the opposite conclusion can be drawn. Finally, generic lognormal fragility functions are proposed as a function of building height and structural system.
机译：在本文中，评估了布加勒斯特这座钢筋混凝土和钢结构的易碎性，布加勒斯特是一个高地震危险性城市，它使用罗马尼亚最近的建筑规范进行设计。共分析了24个钢筋混凝土和钢结构，高度从5层到13层不等。使用文献中的两种方法评估了它们的地震脆性。在第一个过程（SPO2FRAG）中，使用SPO2IDA算法基于推算曲线得出脆弱性，而在第二个过程（FRACAS）中，从非线性时间历史分析得出脆弱性。所分析的结构设计为针对三个峰值地面加速度水平，分别对应于100、225和475？年的平均回报期。随后，使用从蒙特卡洛模拟地震目录中生成的Vrancea中深度地震震源的地震动来进行分析结构的损伤评估。使用SPO2FRAG方法估计的损坏程度高于使用FRACAS方法估计的损坏程度。结构的生命周期分析表明，从经济角度考虑，使用SPO2FRAG结果可以进一步提高布加勒斯特的设计峰值地面加速度。但是，基于FRACAS结果，可以得出相反的结论。最后，提出了对数正态易损性函数作为建筑物高度和结构系统的函数。

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