@article{ref1,
title="Study on finite element model updating in highway bridge static loading test using spatially-distributed optical fiber sensors",
journal="Sensors (Basel)",
year="2017",
author="Wu, Bitao and Lu, Huaxi and Chen, Bo and Gao, Zhicheng",
volume="17",
number="7",
pages="s17071657-s17071657",
abstract="A finite model updating method that combines dynamic-static long-gauge strain responses is proposed for highway bridge static loading tests. For this method, the objective function consisting of static long-gauge stains and the first order modal macro-strain parameter (frequency) is established, wherein the local bending stiffness, density and boundary conditions of the structures are selected as the design variables. The relationship between the macro-strain and local element stiffness was studied first. It is revealed that the macro-strain is inversely proportional to the local stiffness covered by the long-gauge strain sensor. This corresponding relation is important for the modification of the local stiffness based on the macro-strain. The local and global parameters can be simultaneously updated. Then, a series of numerical simulation and experiments were conducted to verify the effectiveness of the proposed method. The results show that the static deformation, macro-strain and macro-strain modal can be predicted well by using the proposed updating model.<p /> <p>Language: en</p>",
language="en",
issn="1424-8220",
doi="10.3390/s17071657",
url="http://dx.doi.org/10.3390/s17071657"
}