...
  • 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Materials and structures >Experimental pull-out tests and design indications for strength anchors installed in masonry walls
【24h】

Experimental pull-out tests and design indications for strength anchors installed in masonry walls

机译：安装在砌体墙壁中的实验拉出试验和设计适应症

获取原文
获取原文并翻译 | 示例
   

获取外文期刊封面封底 >>

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

摘要

This study deals with the identification of the mechanical behavior of chemical anchors embedded in masonry walls. 108 pull-out tests are carried out in five types of masonry walls built with clay brick or vertically perforated units with cement mortar. Different parameters are taken into account: embedment depths, masonry type, anchor position (injection either in brick units or in mortar joints). The axial load capacity and the failure mode are observed for each test. The results are examined by means of elastic and plastic models assessing the efficiency of anchors installed in headers, stretchers or mortar joints. The anchors injected in mortar joints are shown to have much greater pull-out capacity than that found for anchors in bricks. Passing from 90 to 160 mm of embedment depth, a minimum increase by 40% of pull-out strength is observed. The most common failure modes are the sliding failure, which occurs for short anchors or weak masonry, and mixed sliding/cone failure, for long anchors or strong masonry. An analytical model is proposed to design anchors in order to avoid or at least to limit brittle masonry failures and to identify the field of application of uniform stress models.
机译：本研究涉及嵌入砌体墙壁中化学锚的力学行为的识别。 108拉出试验是用粘土砖或带有水泥砂浆的垂直穿孔单元建造的五种类型的砌体墙壁进行。考虑到不同的参数：嵌入深度，砌体类型，锚定位置（注射在砖单元或砂浆接头中）。每个测试都观察到轴向载荷能力和故障模式。通过弹性和塑料模型来检查结果，评估在标头，担架或砂浆接头中安装的锚点的效率。喷射在砂浆接头中的锚固件被示出比砖中的锚点的拉出能力更大。通过90至160毫米的嵌入深度，观察到最小增加40％的拉出强度。最常见的故障模式是滑动失败，其发生短锚或弱砌体，以及混合滑动/锥形故障，用于长锚或强砌体。提出了一个分析模型来设计锚，以避免或至少限制脆性砌体故障，并识别均匀应力模型的应用领域。

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