Dynamic Shear Characteristics of Aso Kuroboku

阿蘇火山灰土の動的セン断特性について

Dynamic Shear Characteristics of Aso Kuroboku

Creators Ohara Sukeo

Creators Yamamoto Tetsuro

In order to clarify the property of static and dynamic strengths, and shear modulus of Aso Kuroboku, the folllowing experiments are performed. The dynamic triaxial tests were carried out by the method decreasing a confining pressure during cyclic dynamic loading. Shear modulus in a very low confined stress, such as no surface load is placed on a sample, was measured using a shaking box (Fig. 5) fixed on a shaking table. From the above experiments, it is found that the angle of dynamic shearing resistant of Kuroboku is nearly half of that in the case of static. Furthermore, it seems shear modulus in a range of very low confined stress can be extrapolated from the results of simple shear tests.

[ISSN]0372-7661

[NCID]AN00244228