基于小波多尺度的索塔锚固区变形特征提取

PDF(2839 KB)

振动与冲击 ›› 2012, Vol. 31 ›› Issue (8) : 102-106.

论文

基于小波多尺度的索塔锚固区变形特征提取

张宁宁1,2，陈志坚2

作者信息 +

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

ZHANG Ning-ning1,2, CHEN Zhi-jian2

Author information +

文章历史 +

摘要

苏通大桥索塔锚固区高频度的监测数据显示，在造成数据失真的各种噪声中，温度对类似索塔的高耸构筑物的影响尤其明显，会使其产生“背日葵”现象，为了查清温度导致的索塔变形情况，准确评估索塔的安全性，结合实时的气象资料和工况，分时段的采用小波多尺度去噪方法逐层分离出温度产生的索塔偏离度，提取出因实际工况产生的索塔锚固区变形特征。为锚固区传力机理以及施工控制提供了可靠的计算分析依据，对高耸构筑物受力分析具有很好的工程应用前景。

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.

导出引用

张宁宁;陈志坚. 基于小波多尺度的索塔锚固区变形特征提取[J]. 振动与冲击, 2012, 31(8): 102-106

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