• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Bulletin of earthquake engineering >Characteristics and displacement capacity of reinforced concrete walls in damaged buildings during 2010 Chile earthquake
【24h】

Characteristics and displacement capacity of reinforced concrete walls in damaged buildings during 2010 Chile earthquake

机译：2010年智利地震期间受损建筑物中钢筋混凝土墙的特征和位移能力

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

About 2 % of reinforced concrete (RC) buildings taller than nine stories suffered important structural damage during 2010 Chile earthquake. The typical structural configuration of residential buildings is characterized by a large number of RC structural walls which provides high lateral stiffness and strength. The first objective of this paper is to obtain global geometric and design parameters of RC structural walls in damaged buildings and correlate their values with the observed damage. The second objective is to compare the roof displacement capacity with the roof displacement demand in critical walls, and hence, try to explain the observed damage. The wall parameters were obtained from five representative damaged structural wall buildings; these are: wall thickness, aspect ratio, axial load, reinforcement ratios, and the ratio between horizontal reinforcement spacing and the vertical bar diameter. The roof displacement capacity is obtained using a plastic hinge approach, and the ACI 318-08 approach, since both methods are proposed in the current Chilean seismic code. The displacement demand is estimated from ground motions recorded in the vicinity of the buildings. It is found that values of wall parameters correlate well with the observed damage. The structural walls were subjected to relatively high axial loads, and some walls included a large amount of vertical reinforcement to provide the required strength, but had inadequate transverse reinforcement thus compromising ductility. Findings from this research suggest that the plastic hinge approach is inadequate to estimate the roof displacement capacity and lacks correlation with the observed damage. Moreover, the use of the ACI 318-08 approach to estimate the roof displacement capacity is also inadequate, but leads to better predictions of wall displacement capacity. As shown by the results of response history analysis, the failure of walls was triggered by high axial loads rather than flexural deformation.
机译：在2010年智利地震中，高出9层的钢筋混凝土（RC）建筑物中约有2％遭受了重要的结构性破坏。住宅建筑的典型结构构造的特点是，大量的RC结构墙提供了较高的侧向刚度和强度。本文的首要目标是获得受损建筑物中钢筋混凝土结构墙的整体几何和设计参数，并将其值与观测到的损坏相关联。第二个目标是将屋顶的位移能力与关键墙体的屋顶位移需求进行比较，从而尝试解释观察到的破坏。墙参数是从五座代表性的受损结构墙建筑中获得的;它们是：壁厚，纵横比，轴向载荷，钢筋比率以及水平钢筋间距与垂直钢筋直径之间的比率。屋顶位移能力是使用塑料铰链方法和ACI 318-08方法获得的，因为这两种方法都是在当前的智利地震法规中提出的。位移需求是根据建筑物附近记录的地震动估算的。发现壁参数的值与所观察到的损伤良好相关。结构墙承受了较高的轴向载荷，有些墙包含大量的垂直钢筋以提供所需的强度，但横向钢筋不足，从而影响了延展性。这项研究的结果表明，塑料铰链方法不足以估算屋顶的位移能力，并且与观测到的破坏缺乏相关性。此外，使用ACI 318-08方法来估计屋顶位移能力也是不够的，但是可以更好地预测墙壁位移能力。如响应历史分析结果所示，墙的破坏是由高轴向载荷而不是弯曲变形引起的。

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