Seismic Response of RC Bridge Piers Considering Soil-Pile Interaction
Takeshi Maki, Hiroshi Mutsuyoshi and Anawat Chotesuwan
Appears on pages(s):
substructure pseudo-dynamic test; RC bridge pier; pile foundation; seismic response; seismic strengthening; soil-structure interaction; earthquake
After the Kobe earthquake in 1995 in Japan, many reinforced concrete (RC) bridge piers have been strengthened using various techniques, such as steel jacketing and concrete jacketing. It is anticipated that, when the next strong earthquake comes, foundations will possibly be damaged because of the enhanced capacity of the pier. In this paper, the seismic response of reinforced concrete (RC) bridge piers and foundations were evaluated using the substructure pseudo-dynamic (S-PSD) testing method for cases in which strengthening was provided to the pier and foundation. The S-PSD testing method for bridge pier-foundations was first developed. Based on the developed method, damage in a
foundation that supported a strengthened pier was investigated through a pier specimen loading. In addition, the response of a strengthened bridge pier with a strengthened foundation was also examined through a foundation specimen loading. The possibility of foundation damage due to pier strengthening
and the effectiveness of foundation strengthening were finally confirmed.