...
  • 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Canadian Geotechnical Journal >Field and theoretical analysis of response of axially loaded grouted drilled shafts in extra-thick fine sand
【24h】

Field and theoretical analysis of response of axially loaded grouted drilled shafts in extra-thick fine sand

机译：粗砂中轴向装甲钻井轴响应的场景与理论分析

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

Research on post-grouted drilled shafts has focused primarily on post-grouted tips. Here, four full-scale shaft load tests were conducted to investigate the behaviors and performance of combined tip-and-side grouted superlong and large-diameter drilled shafts in extra-thick fine sand layers. The enhanced mechanism of the combined grouted drilled shafts is analyzed, and a rational approach for analyzing their load-displacement response is presented. The side and base resistance of the combined grouted drilled shafts exhibited significant strengthening, substantially increasing the bearing capacity and effectively controlling settlement. Under the ultimate load, >60% of the shaft head displacement was caused by shaft compression; a relatively small load proportion was carried by the shaft base. The superlong and large-diameter drilled shaft can be treated as a friction shaft, and the combined tip-and-side grouting cannot change the bearing characteristics. The hyperbolic model describes the relationship between the side resistance and relative shaft-soil displacement and captures the base resistance-displacement response. The proposed approach is verified with a case history, and the bearing behaviors of a large-diameter drilled shaft under an extra-thick fine sand layer are analyzed. These results clarify the bearing characteristics of combined grouted shafts and can help guide the design of post-grouted shafts.
机译：灌浆后钻井轴的研究主要集中在灌浆后的尖端上。这里，进行了四个全尺度轴载荷测试，以研究超厚的细砂层中组合的尖端灌浆超龙和大直径钻井的行为和性能。分析了组合的灌浆轴的增强机构，并提出了一种用于分析其负载 - 位移响应的合理方法。组合灌浆钻轴的侧面和底电阻表现出显着的强化，基本上增加承载力和有效地控制沉降。在极限载荷下，> 60％的轴头位移是由轴压缩引起的;轴基座承载了相对小的负载比例。超延伸和大直径钻孔轴可以作为摩擦轴处理，并且组合的尖端和侧灌浆不能改变轴承特性。双曲模型描述了侧电阻和相对轴 - 土位移之间的关系，并捕获了基本电阻 - 位移响应。通过壳体历史验证所提出的方法，分析了大直径钻井轴的轴承行为在额外厚的细砂层下进行。这些结果阐明了组合灌浆轴的轴承特性，可以帮助指导灌浆后灌浆的设计。

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