埼玉県春日部市における超軟弱粘土の動土質工学的性質

概要

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An earthquake causes serious damage to civil engineering structures, which cannot be avoided unfortunately in Japan. In 1923, Kanto earthquake caused extensive damage to Misato and Kasukabe districts, which are located in a central part of Nakagawa lowland in Kanto alluvial plain. Recently, it was reported that the seismic intensity in Nakagawa lowland was beyond 6.5, in particular, 7 in Kasukabe It was also found that the ultra soft clay exists in underground clayey soils in Nakagawa lowland. That is, the soil behaves like liquid when it is remolded. Furthermore, the shear wave velocities in PS logging tests are nearly constant in the ultra soft clayey soils, irrespective of the water content and the depth. In order to study dynamic properties of the ultra soft alluvial clayey soil, the shear wave velocities were measured in a triaxial chamber equipped with the so-called bender element. Cyclic un-drained triaxial tests were carried out to investigate the dynamic properties
埼玉大学総合研究機構地域共同研究センター産学連携推進部門の論文