TY  - JOUR
PY  - 2017//
TI  - Study on finite element model updating in highway bridge static loading test using spatially-distributed optical fiber sensors
JO  - Sensors (Basel)
A1  - Wu, Bitao
A1  - Lu, Huaxi
A1  - Chen, Bo
A1  - Gao, Zhicheng
SP  - s17071657
EP  - s17071657
VL  - 17
IS  - 7
N2  - 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>
LA  - en
SN  - 1424-8220
UR  - http://dx.doi.org/10.3390/s17071657
ID  - ref1
ER  -