• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文会议>Australian Conference on the Mechanics of Structures and Materials >Simplified fatigue assessment for earthquake losses: Cycle counting and fragility analysis to quantify damage
【24h】

Simplified fatigue assessment for earthquake losses: Cycle counting and fragility analysis to quantify damage

机译：用于地震损失的简化疲劳评估：循环计数和脆弱分析量化损伤

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

摘要

The Canterbury Earthquakes have brought the concept of low-cycle fatigue demands on structures to the forefront of post-event structure assessment. Methods are required to rapidly assess the proportion of a structure's fatigue life that has been consumed by an earthquake and aftershock sequence to determine restoration requirements. First, the structural fatigue capacity is assessed for a nonlinear ductile structure response. Second, time-history analysis and cycle counting methods are used to determine the cumulative low cycle fatigue demand imposed upon a structure by the 2010-2011 Canterbury Earthquake Sequence for the Christchurch CBD. Results are presented as fatigue demand spectra. The effect of the fatigue demand is then assessed for a typical highway bridge that has been designed to New Zealand code provisions. Results show the Canterbury earthquake and aftershock sequence consumed some 50% of the total fatigue life for the bridge piers if the bridge was located within the Christchurch CBD. As low cycle fatigue damage is irreparable, a rebuild of the substructures of the bridge is deemed be necessary to restore the structure to a new condition.
机译：坎特伯雷地震已经带来了对事件后结构评估的最前沿的低周期疲劳需求的概念。方法需要快速评估结构疲劳寿命的比例，这些疲劳寿命已被地震和余震序列消耗以确定恢复要求。首先，对非线性延性结构响应评估结构疲劳能力。其次，时间历史分析和循环计数方法用于确定2010-2011 Canterbury地震序列对基督城CBD的结构施加的累积低周期疲劳需求。结果呈现为疲劳需求光谱。然后对典型的公路桥进行疲劳需求的影响，该典型的公路桥梁被设计为新西兰代码规定。结果表明，如果桥梁位于Christchurch CBD内，坎特伯雷地震和余震序列消耗了桥梁码头的大约50％的疲劳寿命。随着低循环疲劳损坏是无法弥补的，认为桥的子结构的重建是必要的，以将结构恢复到新条件。

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