| Title |
Ground-Structure Seismic Interaction-Induced Rocking Behavior and the Uplift Behavior of Underground Hollow Structure |
| DOI |
https://doi.org/10.12652/Ksce.2012.32.3C.085 |
| Keywords |
원심모형실험;지반-지하 중공구조물 상호작용;액상화;부상량;rocking현상 centrifuge study;ground-underground hollow structure interaction;liquefaction;uplift displacement;rocking behavior |
| Abstract |
This paper described a centrifuge study in order to investigate ground-underground hollow structure interaction-induced rocking behavior in liquefied ground. Uplift of the underground hollow structures is initiated due to liquefaction in sandy grounds when the ground is exposed to a strong shaking during earthquakes because the apparent unit weight of these structures is smaller than that of the liquefied soil. In order to evaluate the dynamic behavior of the underground hollow structure and the effects of original subsoil during the uplifting, model tests were performed by changing the relative density of the original subsoil and installing an acrylic box as a trench. The results of the present study show that rocking behavior of the underground hollow structure due to shear deformation of the surrounding subsoil or lateral movement from the original subsoil contributed to large magnitude of the uplift due to strong shaking. |