NDLI: Life cycle detection of prestress in large prestressed reinforcement structures

Content Provider	Springer Nature Link
Author	Jin, Xiu mei Du, Yan liang Sun, Bao chen
Copyright Year	2005
Abstract	To monitor the stress state of prestressed reinforcement in large reinforcement prestressed structure, two sensing structures, namely the direct spiral-winding structure and sawtooth modulated structure, were designed based on the ordinary communication optical fiber. The sensing theories were analyzed, and the experimental studies were also carried out. The quasi-distributed sensing system based on optical time domain reflective technology was established. The detection wavelength and spatial resolution were analyzed, and the estimation formula of maximal number of sensing point was also given. The results show that the system can realize the quasi-distributed test of measurand with single fiber, which helps to simplify the in-out wires. Moreover it can take on the important task of long-term and continuous monitoring of prestress, which helps to realize the life cycle detection of prestress, and play an important role in the estimating of bridge health state.
Starting Page	90
Ending Page	94
Page Count	5
File Format	PDF
ISSN	10059784
Journal	Journal of Central South University of Technology
Volume Number	12
Issue Number	2
e-ISSN	19930666
Language	English
Publisher	Central South University of Technology
Publisher Date	2005-01-01
Publisher Place	Changsha
Access Restriction	Subscribed
Subject Keyword	life cycle detection smart structure prestress optical fiber quasi-distribution Engineering Metallic Materials
Content Type	Text
Resource Type	Article
Subject	Mechanics of Materials Materials Science Mechanical Engineering

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