Sie befinden Sich nicht im Netzwerk der Universität Paderborn. Der Zugriff auf elektronische Ressourcen ist gegebenenfalls nur via VPN oder Shibboleth (DFN-AAI) möglich. mehr Informationen...
Analysis on Deflection Characteristics of Steel Cable-Stayed Bridge
Ist Teil von
Transactions of Nanjing University of Aeronautics & Astronautics, 2018-10 (5), p.890
Ort / Verlag
Nanjing: Nanjing University of Aeronautics and Astronautics
Erscheinungsjahr
2018
Link zum Volltext
Quelle
Alma/SFX Local Collection
Beschreibungen/Notizen
Various kinds of deflection characteristics on the steel cable-stayed bridge (Nanjing No. 3 Yangtze River Bridge) are investigated by different mathematical statistical methods. Firstly, via Pearson correlation coefficient calculation, it shows good consistency between the adjacent measuring point of side span or middle span. Secondly, taking mid-span deflection as an example, the correlation analysis of deflection and temperature is conducted. They are synchronous via cross correlation coefficient calculation but not completely linear and a"hysteresis loop"phenomenon of three stages is formed. The fitting result on the monitoring data at day time is consistent with the numerical value through the application of unit temperature difference between the cable and girder and the positive temperature gradient of girder in the finite element model. And the temperature effect is considerable. Vehicle loads effect is obtained from wavelet analysis. The extracted curve can indirectly reflect the change of traffic loads. Finally, the structural damage is analyzed through the trend fusion on the deflection, cable force and visual inspection from 2006 to 2015. Relevant conclusions can provide a basis for management departments to carry out special detection.