Evaluation of seismic displacements of quay walls |
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| Authors: | Sung-Ryul Kim In-Sung Jang Choong-Ki Chung Myoung-Mo Kim |
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| Institution: | aDepartment of Civil Engineering, Dong-A University, 840 Hadan2-dong, Saha-gu, Busan 604-714, South Korea;bKorea Ocean Research and Development Institute, Sa2-dong, Sanglok-gu, Ansan-si, Kyoungi-do 426-744, South Korea;cSchool of Civil, Urban and Geosystem Engineering, Seoul National University, San 56-1, Shinlim-dong, Gwanak-gu, Seoul 151-742, South Korea |
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| Abstract: | A new simplified dynamic analysis method is proposed to predict the seismic sliding displacement of quay walls by considering the variation of wall thrust, which is influenced by the excess pore pressure developed in backfill during earthquakes. The method uses the Newmark sliding block concept and the variable yield acceleration, which varies according to the wall thrust, to calculate the quay wall displacement.A series of 1 g shaking table tests were executed to verify the applicability of the proposed method, and a parametric study was performed. The shaking table tests verified that the proposed method properly predicts the wall displacement, and the parametric study showed that the evaluation of a realistic wall displacement is as important as the analysis of liquefaction potential for judging the stability of quay walls. |
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| Keywords: | Earthquakes Newmark sliding block method Seismic design Shake table tests Quay walls |
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