CAJ | 학술논문

高层结构受气象、地基沉陷等外界因素影响,会产生一系列的振动变形；为研究其振动特性,保障结构安全,须对其进行变形监测。利用GPS对高层结构进行变形监测时,得到的变形信号往往包含大量的无用信息,为准确把握结构体的变形信息,可以用提升小波变换的方法对信号进行处理。以皖北矿区某副井提升台为研究对象,将监测点设于振动台上,利用天宝R10对监测点进行监测试验,对得到的振动变形信号进行提升小波变换以初步降噪,然后对降噪后的信号进行小波分解。结果表明,GPS监测获取的振动信号中包含大量噪声,通过提升小波变换处理及小波分解之后,将噪声与振动信息分离开来,提取出了有效的结构振动信息,这对于实践中的GPS数据处理及形变信息提取工作具有着重要的参考价值。
고층결구수기상、지기침함등외계인소영향,회산생일계렬적진동변형；위연구기진동특성,보장결구안전,수대기진행변형감측。이용GPS대고층결구진행변형감측시,득도적변형신호왕왕포함대량적무용신식,위준학파악결구체적변형신식,가이용제승소파변환적방법대신호진행처리。이환북광구모부정제승태위연구대상,장감측점설우진동태상,이용천보R10대감측점진행감측시험,대득도적진동변형신호진행제승소파변환이초보강조,연후대강조후적신호진행소파분해。결과표명,GPS감측획취적진동신호중포함대량조성,통과제승소파변환처리급소파분해지후,장조성여진동신식분리개래,제취출료유효적결구진동신식,저대우실천중적GPS수거처리급형변신식제취공작구유착중요적삼고개치。
Influenced by outside factors such as meteorology and subsidence,high-level structure always produce a series of vibration deformation,so deformation monitoring should be performed to study its vibration characters and ensure its safety. In the process of deformation monitoring,the deformation signal often contains a lot of useless information with the technology of GPS. In order to get useful vibration deformation information,lifting wavelet analysis in signal processing has been considered. Taking a auxiliary shaft elevator platform of Wanbei mining area as an example, monitoring stations positioning on the vibration table,monitoring tests with Trimble R10 for plane point had been made,and lifting wavelet analysis had been operated on the vibration deformation signal,and then wavelet decomposition had been made to achieve useful information. Results showed that the vibration signal obtained by GPS monitoring contained a lot of noise. With the technology of lifting wavelet analysis and de-composition,noise was separated from the effective structural vibration information. It has important reference value for the practice of GPS data processing and the work of deformation information extraction.