Stay cable time-varying cable force identification method based on cable-beam transmissibility function

Stay cable time-varying cable force identification method based on cable-beam transmissibility function

The invention belongs to the technical field of bridge structure health inspection and monitoring data analysis, and provides a stay cable time-varying cable force identification method based on a cable-beam transmissibility function. The method comprises the following steps: establishing a stay cab...

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Hauptverfasser: ZHANG SONGHAN, LUO LANYING, DU YANLIANG, ITINWA
Format: Patent
Sprache:chi ; eng
Schlagworte:
CALCULATING
COMPUTING
COUNTING
ELECTRIC DIGITAL DATA PROCESSING
PHYSICS
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creator ZHANG SONGHAN
LUO LANYING
DU YANLIANG
ITINWA
description The invention belongs to the technical field of bridge structure health inspection and monitoring data analysis, and provides a stay cable time-varying cable force identification method based on a cable-beam transmissibility function. The method comprises the following steps: establishing a stay cable theoretical model under boundary disturbance to obtain a cable-beam transmissibility function; measuring a cable-beam vibration response excited by a random vehicle in a bridge operation state, or reconstructing a beam end response of each inhaul cable based on a limited measurement point response of a main beam of the existing monitoring system; processing cable-beam response by adopting a Hanning window sliding along with time and discrete time Fourier transform, calculating a cable-beam transmissibility function under each time window, and identifying each order of time-varying frequency by using a peak pickup method; and the time-varying cable force and the bending rigidity of the inhaul cable are estimated
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subjects CALCULATING
COMPUTING
COUNTING
ELECTRIC DIGITAL DATA PROCESSING
PHYSICS
title Stay cable time-varying cable force identification method based on cable-beam transmissibility function
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