苏通大桥锚固区应力数据的分层去噪处理  

Wavelet layered de-noising process of stress data of anchorage zone for Sutong Bridge

作　　者：张宁宁[1] 陈志坚[1] 戚闪坡[2] 边磊[3] 

机构地区：[1]河海大学地球科学与工程学院,江苏南京210098 [2]中南电力设计院,湖北武汉430071 [3]山东电力工程咨询院有限公司,山东济南250013

出　　处：《河海大学学报（自然科学版）》2011年第4期450-453,共4页Journal of Hohai University(Natural Sciences)

基　　金："十一五"国家科技支撑计划(2006BAG04B05);国家重点基础研究发展计划(973计划)(2002CB412707)

摘　　要：比较苏通大桥锚固区应力监测数据与气象资料后发现,气温对锚固区应力的影响显著.为了给锚固区传力机制分析提供准确的应力数据,结合同步气象观测资料,根据不同时段各噪声强度的差异,采用基于时段尺度的小波分层去噪方法逐级分离出气温对锚固区应力的不同影响.分析结果表明,该方法可基本消除气温对锚固区应力的影响,对类似索塔锚固区的高耸构筑物受力分析具有很好的工程应用效果.Comparing the stress monitoring data of the anchorage zone for Sutong Bridge with the meteorological date,it is found that the stress in the anchorage zone is obviously influenced by temperature.In order to provide accurate and reliable stress data for the analysis of force transfer mechanics,according to the difference of noise intensity at different times and the synchronous meteorological data,the different influences of temperature on the stress in the anchorage zone were separated step by step using the method of wavelet layered de-noising based on the time scale.The results show that the method can eliminate the influence of temperature on the stress in the anchorage zone,and has a good application in the force analysis of topping structures in the cable-tower anchorage zone.

关 键 词：苏通大桥 锚固区 应力 气温 时段尺度 小波分层去噪 

分 类 号：TU196[建筑科学—建筑理论] TU398