TY - GEN
T1 - SHM of Vibrating Stay-Cables by Microwave Remote Sensing
AU - Cabboi, Alessandro
AU - Gentile, Carmelo
AU - Zonno, Giacomo
N1 - Accepted author manuscript
PY - 2021
Y1 - 2021
N2 - A radar equipment was used to measure the deflection response of bridge stay-cables induced by ambient and traffic excitation. After a concise description of the radar equipment and a summary of advantages and potential issues of the microwave technology, the paper focuses on the experimental tests performed on all stay-cables of the curved cable-stayed bridge erected in the commercial harbor of Porto Marghera, Venice, Italy. The bridge consists of an inclined concrete tower, single-plane cables and a composite deck; the curved deck has a centerline length of 231 m, with two different side spans and 9 cables supporting each side span. Three series of ambient vibration tests were performed (on July 2010, April 2011 and October 2019) on the two arrays of cables of the bridge by using conventional accelerometers and microwave interferometer. The availability of simultaneously collected radar and accelerometer data (which are usually regarded as reference data in dynamic tests) allowed to investigate the accuracy of the radar technique (in terms of natural frequencies and tensile force estimated from natural frequencies) and the errors/uncertainties in radar results. Furthermore, the tests allowed to verify the repeatability of radar survey, with SHM purposes.
AB - A radar equipment was used to measure the deflection response of bridge stay-cables induced by ambient and traffic excitation. After a concise description of the radar equipment and a summary of advantages and potential issues of the microwave technology, the paper focuses on the experimental tests performed on all stay-cables of the curved cable-stayed bridge erected in the commercial harbor of Porto Marghera, Venice, Italy. The bridge consists of an inclined concrete tower, single-plane cables and a composite deck; the curved deck has a centerline length of 231 m, with two different side spans and 9 cables supporting each side span. Three series of ambient vibration tests were performed (on July 2010, April 2011 and October 2019) on the two arrays of cables of the bridge by using conventional accelerometers and microwave interferometer. The availability of simultaneously collected radar and accelerometer data (which are usually regarded as reference data in dynamic tests) allowed to investigate the accuracy of the radar technique (in terms of natural frequencies and tensile force estimated from natural frequencies) and the errors/uncertainties in radar results. Furthermore, the tests allowed to verify the repeatability of radar survey, with SHM purposes.
KW - Dynamic testing
KW - Microwave remote sensing
KW - Radar
KW - Stay-cable
KW - Structural Health Monitoring
UR - http://www.scopus.com/inward/record.url?scp=85102300464&partnerID=8YFLogxK
U2 - 10.1007/978-3-030-64908-1_26
DO - 10.1007/978-3-030-64908-1_26
M3 - Conference contribution
AN - SCOPUS:85102300464
SN - 9783030649074
T3 - Lecture Notes in Civil Engineering
SP - 276
EP - 285
BT - European Workshop on Structural Health Monitoring - Special Collection of 2020 Papers - Volume 2
A2 - Rizzo, Piervincenzo
A2 - Milazzo, Alberto
PB - Springer
CY - Cham
T2 - 10th European Workshop on Structural Health Monitoring, EWSHM 2020
Y2 - 1 July 2022 through 1 July 2022
ER -