Conception and development of an optical methodology applied to long-distance measurement of suspension bridges dynamic displacement

2013 Joint IMEKO (International Measurement Confederation) TC1-TC7-TC13 Symposium: Measurement Across Physical and Behavioural Sciences

Martins, L. Lages^1 ; Rebordão, J.M.^2 ; Ribeiro, A Silva^1

National Laboratory for Civil Engineering (LNEC), Lisbon, Portugal^1

Laboratory of Optics, Lasers and Systems (LOLS), Lisbon, Portugal^2

关键词: Calculation algorithms;    Dynamic displacements;    Long distance measurement;    Optical measurement systems;    Real time;    Simulator tools;    Structural monitoring;    Three-dimensional displacements;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/459/1/012055/pdf
DOI  :  10.1088/1742-6596/459/1/012055

来源: IOP

【 摘 要 】

This paper describes the conception and development of an optical system applied to suspension bridge structural monitoring, aiming real-time and long-distance measurement of dynamical three-dimensional displacement, namely, in the central section of the main span. The main innovative issues related to this optical approach are described and a comparison with other optical and non-optical measurement systems is performed. Moreover, a computational simulator tool developed for the optical system design and validation of the implemented image processing and calculation algorithms is also presented.