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Indexed by:期刊论文

Date of Publication:2016-10-01

Journal:APPLIED OPTICS

Included Journals:SCIE、EI、Scopus

Volume:55

Issue:28

Page Number:7917-7921

ISSN No.:1559-128X

Abstract:Ground settlement (GS) is one of the causes that destroy the durability of reinforced concrete structures. It could lead to a deterioration in the structural basement and increase the risk of collapse. The methods used for GS monitoring were mostly electronic-based sensors for reading the changes in resistance, resonant frequencies, etc. These sensors often bear low accuracy in the long term. Our published work demonstrated that a fiber-optic low-coherent interferometer configured in a Michelson interferometer was designed as a GS sensor, and a micro-meter resolution in the room environment was approached. However, the designed GS sensor, which in principle is based on a hydraulic connecting vessel, has to suffer from a tilt degeneration problem due to a strictly vertical requirement in practical installment. Here, we made a design for the GS sensor based on its robust tilt performance. The experimental tests show that the sensor can work well within a +/- 5 degrees tilt. This could meet the requirements in most designed GS sensor installment applications. (C) 2016 Optical Society of America