基于結(jié)構(gòu)響應(yīng)測量的結(jié)構(gòu)參數(shù)估計

基于結(jié)構(gòu)響應(yīng)測量的結(jié)構(gòu)參數(shù)估計
摘要：對由GPS系統(tǒng)在線監(jiān)測獲取的結(jié)構(gòu)響應(yīng)數(shù)據(jù)，進(jìn)行了分析計算，給出了結(jié)構(gòu)響應(yīng)的空間分布及與空間位移分布相關(guān)聯(lián)的譜分布，初步分析了結(jié)構(gòu)響應(yīng)的空間分布及譜分布所隱含的結(jié)構(gòu)性能特征及結(jié)構(gòu)性能變化的可能趨勢。研究表明，結(jié)構(gòu)響應(yīng)的統(tǒng)計分析及譜分析是揭示隱含的結(jié)構(gòu)動力性能特征的可行方法，可以作為估計結(jié)構(gòu)性能差異的指標(biāo)之一。

關(guān)鍵詞：結(jié)構(gòu)響應(yīng)，時間序列，統(tǒng)計分析，譜分析

Estimation of structural parameters based structural response measured by Global Positioning System
Abstract
For data of all 12 monitoring station sites obtained during field data acquisition by the real-time kinematic Global Positioning System (RTK GPS) in structural health monitoring (SHM) system of the Nanpu Bridge in Shanghai, volume of statistical computations have been finished. The spatial distributions and related spectrum estimations for some monitoring station sites are present. The characteristics of structural performance and tendency of difference of structural performance that implied by the coordinate time series of response have been analyzed. The research indicated that statistical and spectrum analysis of response is a feasible method that may reveal the characters of structural response and statistical characters of structural response may be considered as index for estimation of difference of structural performance.
Key words: Response of structures, Time series, Statistical analysis, Spectrum analysis