Abstract
Key Word: settlement joint, 2 dimensional deformations, long gauge FBG sensor, Macro strain Abstract: In this paper, to monitoring the 2-D deformation of building's settlement joint, based on the testing Macro-strain of long gauge FBG strain sensing technology, the calculating method for the 2-D deformation is derived. One kind of accurate real time monitoring method is proposed, and its reliability and accuracy are verified in Lab. Furthermore, the proposed method has been successfully applied in monitoring the settlement joint of a concrete reservoir during underneath pass construction of shield tunnel in Wuxi subway.
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