A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Deflection distribution estimation of tied‐arch bridges using long‐gauge strain measurements
Deflection, as a critical indicator for structural performance evaluation, is difficult to be measured accurately for long‐span bridges, though various deformation sensors and devices have been developed. In this paper, a new scheme using long‐gauge fiber optic sensors for estimating the deflection distribution of tied‐arch bridges is proposed. First, the complex strain state of the tied‐arch bridge is investigated, in which a cubic function describing the axial strain distribution of the tie beam is obtained. Second, the bending strain is separated from the measured long‐gauge strain which is a combination of axial and bending components by a sensor layout scheme. Finally, the separated bending strain is utilized to estimate the deflection distribution of the tied‐arch bridge through an improved conjugate beam method. Numerical and experimental examples are studied to illustrate the effectiveness of the proposed method for deflection estimation of tied‐arch bridges in static and dynamic loading cases.
Deflection distribution estimation of tied‐arch bridges using long‐gauge strain measurements
Deflection, as a critical indicator for structural performance evaluation, is difficult to be measured accurately for long‐span bridges, though various deformation sensors and devices have been developed. In this paper, a new scheme using long‐gauge fiber optic sensors for estimating the deflection distribution of tied‐arch bridges is proposed. First, the complex strain state of the tied‐arch bridge is investigated, in which a cubic function describing the axial strain distribution of the tie beam is obtained. Second, the bending strain is separated from the measured long‐gauge strain which is a combination of axial and bending components by a sensor layout scheme. Finally, the separated bending strain is utilized to estimate the deflection distribution of the tied‐arch bridge through an improved conjugate beam method. Numerical and experimental examples are studied to illustrate the effectiveness of the proposed method for deflection estimation of tied‐arch bridges in static and dynamic loading cases.
Deflection distribution estimation of tied‐arch bridges using long‐gauge strain measurements
Zhang, Qingqing (author) / Zhang, Jian (author) / Duan, Wenhui (author) / Wu, Zhishen (author)
2018-03-01
14 pages
Article (Journal)
Electronic Resource
English
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