...
  • 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Earthquake Engineering & Structural Dynamics >Out-of-plane shaking table tests of full-scale historic adobe corner walls retrofitted with timber elements
【24h】

Out-of-plane shaking table tests of full-scale historic adobe corner walls retrofitted with timber elements

机译：用木材元素改装的全规模历史型Adobe角墙壁外平面震动台测试

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

Historic adobe structures pose a high seismic risk mainly because of the poor out-of-plane bending response of their walls that may produce fatalities and significant economic, cultural, and heritage losses. In this paper, we propose a retrofitting technique that increases the wall strength for both in-plane and out-of-plane directions. This technique consists of vertical and horizontal timber elements symmetrically installed on each face of the wall to form a confining wood frame, supplemented with vertical tensors that pre-compress the wall. This study evaluates the performance of this retrofitting technique with a two-set experimental program on full-scale historic adobe walls. On the first set, four specimens were subjected to a static overturning test with boundary conditions representing the confinement effect at both ends by orthogonal walls. On the second set, three full-scale specimens, one unretrofitted and two retrofitted, were subjected to four ground motion records on a shaking table to assess the out-of-plane dynamic behavior of typical corner walls. The unretrofitted specimen collapsed during the second motion (peak ground acceleration [PGA] = 0.39 g), while both retrofitted walls survived all four motions (maximum PGA of 0.75 g) proving the high effectiveness of the proposed retrofitting. The addition of base anchors as a variation of the retrofitting technique significantly reduced the rocking effects and the residual drifts of the system, thus improving its overall seismic performance. Further research is needed to develop guidelines for seismic retrofit of heritage buildings including multistory full-scale tests of specimens with various types of openings and retrofitting strategies that minimize their architectural impact.
机译：历史悠久的Adobe结构主要是由于它们的墙壁的差，可能产生死亡和显着的经济，文化和遗产损失的差的平面弯曲响应。在本文中，我们提出了一种改造的技术，其增加了平面内和平面方向的壁强度。该技术由垂直和水平木材元件组成，对称地安装在墙壁的每张面上，以形成一个限制的木框架，补充有预先压缩墙壁的垂直张量。本研究评估了在全规模历史墙壁上用双面实验计划进行了这种改造技术的性能。在第一组上，对四个标本进行静态倾覆试验，边界条件表示通过正交壁两端的限制效果。在第二组上，三个全刻度标本，一个未经凹陷和两个改装，在振动台上进行四个地面运动记录，以评估典型的角壁的平面外动态行为。在第二次运动期间（峰接口[PGA] = 0.39g）坍塌的未经诱导的标本，而两个改装壁在所有四个动作（最大PGA为0.75g）的情况下，证明了所提出的改装的高效性。作为改造技术的变化的基础锚点的加入显着降低了摇摆效应和系统的残余漂移，从而提高了其整体地震性能。需要进一步的研究来制定遗产建筑物的地震改造指南，包括具有各种类型的样品的多元全规模测试，并改造最小化其建筑撞击的策略。

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