| 深基坑支护桩布里渊光时域分布式监测方法研究 |
| |
| 引用本文： | 索文斌,程刚,卢毅,孙义杰,施斌.深基坑支护桩布里渊光时域分布式监测方法研究[J].高校地质学报,2016,22(4):724. |
| |
| 作者姓名： | 索文斌 程刚 卢毅 孙义杰 施斌 |
| |
| 摘 要： | 支护桩是深基坑支护结构中的关键组成部分,其支护效果直接影响到深基坑的稳定性,因此对支护桩应力应变状态的监测十分重要。该文选择了一种能够单端测量的分布式光纤感测技术—布里渊光时域反射计(简称BOTDR),将其应用于深基坑支护桩的变形监测,介绍了这一技术的基本原理、需解决的关键问题及实施技术路线,并结合南京某深基坑工程,验证了这一技术方法的监测效果。结果表明,基于BOTDR的监测方法可以对深基坑支护桩进行全分布式监测,方法可行,结果准确,为深基坑支护桩监测提供了一种新的技术手段。
|
| 关 键 词： | 支护桩 分布式光纤感测技术 深基坑 BOTDR 监测方法 |
Study on Distributed Monitoring Method of Deep Foundation Pit Retaining Pile Based on the Brillouin Optical Time Domain Technology |
| |
| SUO Wenbin,CHENG Gang,LU Yi,SUN Yijie,SHI Bin.Study on Distributed Monitoring Method of Deep Foundation Pit Retaining Pile Based on the Brillouin Optical Time Domain Technology[J].Geological Journal of China Universities,2016,22(4):724. |
| |
| Authors: | SUO Wenbin CHENG Gang LU Yi SUN Yijie SHI Bin |
| |
| Abstract: | Retaining pile is a key part of bracing and retaining structures which directly affect the stability of deep foundation pit.
Therefore, it is important to monitor the strain and stress state of a retaining pile. In this paper, the single-ended detecting distributed optical fiber sensing technology based on the Brillouin Optical Time-Domain Reflectometer (BOTDR) was used for monitoring the deformation of a PHC type retaining pile in a deep foundation pit. The monitoring method was described and its effectiveness was well verified in a deep foundation pit in Nanjing. The results indicate that the BOTDR-based method is feasible to make a fully-distributed monitoring of the retaining pile in the deep foundation pit. It is expected to be a novel way for monitoring deep foundation pit. |
| |
| Keywords: | Retaining pile distributed fiber optical sensing (DFOS) deep foundation pit BOTDR monitoring method |
| 本文献已被 CNKI 等数据库收录！ |
| 点击此处可从《高校地质学报》浏览原始摘要信息 |
| 点击此处可从《高校地质学报》下载免费的PDF全文 |
|
