| 摘要 |
PROBLEM TO BE SOLVED: To reduce horizontal force during an earthquake acting on an existing pile supporting a footing by preventing excessive displacement of the foundation footing of an existing or newly established structure in horizontal force action during the earthquake. SOLUTION: An aseismic reinforcement structure of a pile foundation structure provided on the outer periphery of the footing 3 of the pile foundation structure 1 comprises: a buffer layer 20 provided so as to surround the circumference of the footing 3, absorbing a part of horizontal displacement transmitted from the pile foundation structure 1 in the horizontal force action during the earthquake, and filled with a filler 21 deformed as a lump-like body; and a horizontal displacement suppression structure receiving displacement of the upper side lump-like body from a receiving slide face generated in the buffer layer 20 to be displaced rigidly and bearing the horizontal force during the earthquake. COPYRIGHT: (C)2005,JPO&NCIPI
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