Language:

Monitoring and correction of the stress in an anchor bolt based on Pulse Pre‐Pumped Brillouin Optical Time Domain Analysis

Energy science & engineering, 2020-06, Vol.8 (6), p.2011-2023 [Peer Reviewed Journal]

2020 The Authors. published by the Society of Chemical Industry and John Wiley & Sons Ltd. ;2020. This work is published under http://creativecommons.org/licenses/by/4.0/ (the “License”). Notwithstanding the ProQuest Terms and Conditions, you may use this content in accordance with the terms of the License. ;ISSN: 2050-0505 ;EISSN: 2050-0505 ;DOI: 10.1002/ese3.644

Full text available

Citations Cited by

Actions
1. Add to My Research
2. Remove from My Research
3. E-mail
4. Print
5. Permalink
6. Citation
7. EasyBib
8. EndNote
9. RefWorks
10. Delicious
11. Export RIS
12. Export BibTeX

Title:
Monitoring and correction of the stress in an anchor bolt based on Pulse Pre‐Pumped Brillouin Optical Time Domain Analysis
Author: Liu, Qi ; Chai, Jing ; Chen, Shaojie ; Zhang, Dingding ; Yuan, Qiang ; Wang, Shuai
Subjects: Anchor bolts ; Anchoring ; axial force ; Axial forces ; Axial stress ; bolt ; Bond strength ; Civil engineering ; Coal mining ; Concrete ; Embedding ; Emergency preparedness ; Emergency warning programs ; Friction ; Grooves ; Humidity ; Laboratories ; Light ; Load distribution ; Monitoring ; Optical fibers ; PPP‐BOTDA technology ; pullout test ; Resins ; Rock masses ; Rocks ; Sensors ; Shear stress ; Strain gauges ; Stress concentration ; Stress distribution ; Technology assessment ; Tensile stress ; Tension tests ; Time domain analysis ; Underground construction ; Values
Is Part Of: Energy science & engineering, 2020-06, Vol.8 (6), p.2011-2023
Description: Bolt is an important connection in underground construction and monitoring its stress characteristics is essential to evaluate the effectiveness of bolt. The strain information collected along a rock bolt reveals the long‐term movement characteristics of rock mass, which greatly helps toward disaster prevention and risk warning. Grooving on the surface of a bolt and embedding an optical fiber is one of the main methods for monitoring the anchorage performance and stress distribution around the bolt in underground engineering. In this study, Pulse Pre‐Pumped Brillouin Optical Time Domain Analysis (PPP‐BOTDA) technology is used to evaluate the stress, axial force, and shear stress distribution of the bolt under tensile load for different types (grooved and nongrooved) of bolts embedded in concrete with resin as anchoring agent. The results show that the PPP‐BOTDA sensor can be used to monitor the stress state of the bolt embedded in concrete with resin as anchoring agent when the bolt is subjected to a tensile force. However, the apparent stress value measured in this way is not the actual stress value of the bolt, but is an increased value caused due to the groove. The closer to the exposed end of the bolt, the greater is the deviation between the apparent stress value and the actual stress value of the bolt. Based on the monitoring results from this experimental study, a stress reduction calculation method is proposed, which can change the measured value into the actual stress of the bolt. The PPP‐BOTDA sensor can be used to monitor the stress state of the bolt embedded in concrete with resin as anchoring agent when the bolt is subjected to a tensile force. However, the apparent stress value measured in this way is not the actual stress value of the bolt, but is an increased value caused due to the groove.
Publisher: London: John Wiley & Sons, Inc
Language: English
Identifier: ISSN: 2050-0505
EISSN: 2050-0505
DOI: 10.1002/ese3.644
Source: Wiley Blackwell Open Access Collection
ROAD
ProQuest Central
DOAJ Directory of Open Access Journals

Back to results list


INSPIRE LIBRARY - TON DUC THANG UNIVERSITY	(84-028) 37 755 057	Feedback
19 Nguyen Huu Tho St. Dist.7, HCM	thuvien@tdtu.edu.vn	Feedback

Monitoring and correction of the stress in an anchor bolt based on Pulse Pre‐Pumped Brillouin Optical Time Domain Analysis

Searching Remote Databases, Please Wait