Title :
Nonstationary seismic response of highway bridges supported on columns
Author :
Fu, Gongkang ; Lall, Jyotirmay
Author_Institution :
Structures Res. Transp. Res. & Dev. Bureau, New York State Dept. of Transp., Albany, NY, USA
Abstract :
The seismic displacement of a bridge superstructure relative to its substructure (columns) is studied, including uncertainty of the seismic input. The earthquake excitation is modeled as white noise filtered by the Clough-Penzien (1975) filter, in cascade with modulation accounting for seismic intensity nonstationarity. An analytical solution is obtained for the statistics of the relative displacement and its derivatives. These may be used to develop probabilistic seismic response spectra for design
Keywords :
civil engineering; design engineering; geophysical signal processing; modulation; seismology; statistics; white noise; Clough-Penzien filter; analytical solution; bridge substructure; bridge superstructure; column supports; design; earthquake excitation; highway bridges; modulation; nonstationary seismic response; probabilistic seismic response spectra; relative displacement statistics; seismic displacement; seismic input uncertainty; seismic intensity nonstationarity; white noise; Bridges; Damping; Earthquakes; Hazards; Intensity modulation; Road transportation; Statistical analysis; Structural beams; Uncertainty; White noise;
Conference_Titel :
Uncertainty Modeling and Analysis, 1995, and Annual Conference of the North American Fuzzy Information Processing Society. Proceedings of ISUMA - NAFIPS '95., Third International Symposium on
Conference_Location :
College Park, MD
Print_ISBN :
0-8186-7126-2
DOI :
10.1109/ISUMA.1995.527737
