Deformation features extraction for a cable-tower anchorage zone Based on wavelet multi-scale

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Journal of Vibration and Shock ›› 2012, Vol. 31 ›› Issue (8) : 102-106.

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Deformation features extraction for a cable-tower anchorage zone Based on wavelet multi-scale

ZHANG Ning-ning1,2, CHEN Zhi-jian2

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Abstract

High-frequency monitoring data of cable-tower anchorage zone for Sutong Bridge shows that in the various noises leading to data distortion, topping structures such as cable tower is obviously affected by temperature and backward-sunflower phenomena is brought. In order to find out deformation of cable-tower caused by temperature and accurately evaluate the safety of cable-tower, combining real time meteorological date and construction schedule and adopting wavelet multi-scale denoising method by time scale, departure extent of cable tower brought by temperature is separated step by step. And deformation features of cable-tower anchorage zone brought by construction condition are extracted. Reliable calculation and analysis basis for the mechanic behavior of the anchorage zone and construction control. It has a good future in the field of engineering application for topping structure.

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cable-tower anchorage zone / temperature / deformation / wavelet multi-scale denoising

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ZHANG Ning-ning;CHEN Zhi-jian. Deformation features extraction for a cable-tower anchorage zone Based on wavelet multi-scale[J]. Journal of Vibration and Shock, 2012, 31(8): 102-106