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

fYear

1995

Firstpage

449

Lastpage

454

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;

fLanguage

English

Publisher

ieee

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

Type

conf

DOI

10.1109/ISUMA.1995.527737

Filename

527737