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9-2Šª
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1994”N
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1495-1500•Å
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PROCEEDINGS OF THE JAPAN EARTHQUAKE ENGINEERING SYMPOSIUM
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Keizo UGAI, Tetsuo MATSUDA, Shingo GOSE
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ANALYSIS OF SEISMIC EARTH PRESSURE ACTING ON CANTILEVER-TYPE ABUTMENT
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The interactive seismic earth pressure acting on a cantilever-type abutment is analyzed based on the dynamic elasto-plastic FEM. The backfill of tbe abutment and the soil below its base are assummed as dry sands. The conclusions are as follows. (1) The maximum dynamic earth pressure acting on the abutment can be predicted by the sum of the initial static earth pressure and the one due to the equivalent inertia force acting on the soil mass above the hee1 of the abutment. (2) The el astic assumption for the soil produces unrealistic negative earth pressure on the abutment and earth pressure distributions different from the elasto-plastic one.
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