...
  • 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Bulletin of earthquake engineering >Seismic fragility curves for greek bridges: Methodology and case studies
【24h】

Seismic fragility curves for greek bridges: Methodology and case studies

机译：希腊桥梁的地震易损性曲线：方法论和案例研究

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 study focusses on the estimation of seismic fragility curves for all common bridge types found in modern greek motorways. At first a classification scheme is developed in order to classify the existing bridges into a sufficient number of classes. A total of 11 representative bridge classes resulted, based on the type of piers, deck, and pier-to-deck connection. Then an analytical methodology for deriving fragility curves is proposed and applied to the representative bridge models. This procedure is based on pushover analysis of the entire bridge and definition of damage states in terms of parameters of the bridge pushover curves. The procedure differentiates the way of defining damage according to the seismic energy dissipation mechanism in each bridge, i.e. bridges with yielding piers of the column type and bridges with bearings (with or without seismic links) and non-yielding piers of the wall type. The activation of the abutment-backfill system due to closure of the gap between the deck and the abutments is also taken into account. The derived fragility curves are subjected to a first calibration against empirical curves based on damage data from the US and Japan.
机译：这项研究的重点是估算现代希腊高速公路上所有常见桥梁类型的地震脆性曲线。首先，开发一种分类方案，以将现有桥梁分类为足够数量的类别。根据桥墩，桥面和桥墩之间的连接类型，总共得出11种代表性桥梁等级。然后提出了一种推导脆性曲线的分析方法，并将其应用于代表性的桥梁模型。该过程基于整个桥梁的推覆分析和根据桥梁推覆曲线的参数定义损坏状态。该程序根据每座桥梁的地震能量消散机制来区分定义破坏的方式，即具有屈服墩柱型的桥和具有支座（有或没有地震环）的桥和无屈服墙型墩的桥。还考虑了由于平台和桥台之间的缝隙闭合而导致的桥台回填系统的激活。根据来自美国和日本的破坏数据，对得出的脆性曲线进行针对经验曲线的首次校准。

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