SEISMIC ISOLATION STRUCTURE OF REVETMENT EARTH RETAINING SECTION IN PILE PIER: Fid-Bau Portal

SEISMIC ISOLATION STRUCTURE OF REVETMENT EARTH RETAINING SECTION IN PILE PIER

YOSHITAKE HIDEKI

To provide a seismic isolation structure of a revetment earth retaining section in a pile pier capable of efficiently absorbing the horizontal displacement difference between the pile pier and the revetment when a large earthquake occurs.SOLUTION: In a seismic isolation structure of a revetment earth retaining section facing a pile pier, the revetment earth retaining section has a structural part that is prone to collapse due to horizontal pushing forces, but is easy to repair after collapse. When a large earthquake occurs, if the pile pier and the revetment earth retaining section collide due to the horizontal displacement difference between the pile pier and the revetment, the seismic isolation structure of the revetment earth retaining section in the pile pier is characterized in that the horizontal displacement difference is absorbed by the collapse of the structural part.SELECTED DRAWING: Figure 1

【課題】大地震が発生した際に、杭式桟橋と護岸との水平方向変位差を効率的に吸収することができる、杭式桟橋における護岸土留部の免震構造を提供する。【解決手段】杭式桟橋に臨む護岸土留部の免震構造であって、護岸土留部は、水平方向押力によって崩壊し易いが崩壊後の修復が容易な構造部位を有しており、大地震が発生した際に、杭式桟橋と護岸との水平方向変位差によって、杭式桟橋と護岸土留部が衝突すると、前記構造部位が崩壊することによって、前記水平方向変位差を吸収するようになっていることを特徴とする杭式桟橋における護岸土留部の免震構造。【選択図】図１

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