基于結構響應測量的結構參數估計
摘要：對由GPS系統在線監測獲取的結構響應數據，進行了分析計算，給出了結構響應的空間分布及與空間位移分布相關聯的譜分布，初步分析了結構響應的空間分布及譜分布所隱含的結構性能特征及結構性能變化的可能趨勢。研究表明，結構響應的統計分析及譜分析是揭示隱含的結構動力性能特征的可行方法，可以作為估計結構性能差異的指標之一。

關鍵詞：結構響應，時間序列，統計分析，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