• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文会议>Geotechnical frontiers >Field Measurement of Noise and Ground Surface Vibration during Pile Jetting and Grouting
【24h】

Field Measurement of Noise and Ground Surface Vibration during Pile Jetting and Grouting

机译：桩和注浆过程中噪声和地面振动的现场测量

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

摘要

Noise and vibration are critical issues associated with pile driving operations in an urban environment. Alternative foundations such as drilled shafts and augercast piles alleviate much of the operational noise and vibration. However, the cast-in place installation process may raise concerns in quality control if not adequately monitored. Post grouting the drilled shaft base has been widely used to mobilize a larger portion of the tip resistance prior to construction of the superstructure, thereby controlling the axial displacement during the service. In response to the operational challenges in urban environments, the Florida Department of Transportation and the University of Florida have recently developed a new generation of deep foundation, namely "Jetted and Grouted Precast Pile". The process consists of pressurized water jetting a concrete pile instead of a hammer-driven installation, and subsequent side and tip grouting the pile, which significantly improve skin and tip resistance, respectively, as well as lateral and torsional stiffness. Several studies have been focused on such increase in axial and torsional resistance by grouting techniques. However, there has been little field data available to support quantifiable noise and vibration reduction by jetting and grouting processes. This paper presents field measurements of noise and ground surface vibration during full-scale installation of jetted and grouted piles. Comparison of measured data to recommended noise and vibration limits suggests that jetting and grouting techniques are a viable solution for urban geo-infrastructure development.
机译：噪声和振动是与城市环境中打桩作业相关的关键问题。诸如钻孔竖井和螺旋桩之类的替代地基可减轻许多运行噪音和振动。但是，如果未适当监控，则嵌入式安装过程可能会引起质量控制方面的担忧。钻孔后的井筒底部灌浆已被广泛用于在建造上部结构之前动员大部分的端部阻力，从而在维修过程中控制轴向位移。为了应对城市环境中的运营挑战，佛罗里达州交通运输部和佛罗里达大学最近开发了新一代的深层基础，即“喷射和灌浆预制桩”。该过程包括用高压水喷射混凝土桩而不是用锤子驱动的装置，以及随后对桩的侧面和末端进行灌浆，这分别显着改善了蒙皮和末端的抵抗力，以及横向和扭转刚度。通过灌浆技术已经将一些研究集中在轴向和扭转阻力的增加上。但是，几乎没有现场数据可用于通过喷射和注浆工艺来支持可量化的噪音和减振。本文介绍了在实地安装喷射桩和灌浆桩的过程中，噪声和地面振动的现场测量结果。将测量数据与建议的噪声和振动极限进行比较表明，喷射和灌浆技术是城市地质基础设施发展的可行解决方案。

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