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Interpretation of Painter Street Overcrossing Records to Define Input Motions to the Bridge Superstructure

by K. Romstad and B. Maroney

Romstad, K. and B. Maroney (1990). Interpretation of Painter Street Overcrossing Records to Define Input Motions to the Bridge Superstructure. SMIP 1990 Seminar on Seismological and Engineering Implications of Recent Strong-Motion Data, p. 5-1 - 5-10.

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Abstract

This paper discusses portions of a study utilizing the strong motion data obtained from twenty sensors on and near the Painter Street Overcrossing in Rio Dell, California. Particular attention is paid to the influence abutment behavior has on measured response in the three directions of motion of the bridge superstructure. Previous studies have shown that transverse modes of vibration predicted by ambient testing may not reflect behavior during seismic events. The study also focuses on the influence of direction of input boundary motions to be used in analytical models to predict bridge response.