A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Experimental interpretation of seismically induced instability of mountain slopes
This paper addresses the earthquake‐induced landslide and the post‐earthquake slope instability. After gigantic earthquakes in Taiwan, Pakistan and China have been suffering many slope disasters and there are many reasons for such long‐term aftereffects. Namely, the induced surface cracks can bring in rain water and affect the slope stability. On the other hand, the present study is interested in material deterioration caused by cyclic shear stress and attempted to demonstrate the relationship between the intensity of cyclic shear and the decrease of material strength. The unconfined compression tests were conducted on artificial rock samples to reveal that the post‐cyclic peak stress and strain follows a unique curve and that the strength decreases in accordance with the magnitude of cyclically induced strain. It is further interesting that a similar deterioration occurs after creep deformation, accounting for the material weakening and many slope failures along fault zones where long‐term static loading induces creep deformation. This finding is in line with what is called process zone.
Experimental interpretation of seismically induced instability of mountain slopes
This paper addresses the earthquake‐induced landslide and the post‐earthquake slope instability. After gigantic earthquakes in Taiwan, Pakistan and China have been suffering many slope disasters and there are many reasons for such long‐term aftereffects. Namely, the induced surface cracks can bring in rain water and affect the slope stability. On the other hand, the present study is interested in material deterioration caused by cyclic shear stress and attempted to demonstrate the relationship between the intensity of cyclic shear and the decrease of material strength. The unconfined compression tests were conducted on artificial rock samples to reveal that the post‐cyclic peak stress and strain follows a unique curve and that the strength decreases in accordance with the magnitude of cyclically induced strain. It is further interesting that a similar deterioration occurs after creep deformation, accounting for the material weakening and many slope failures along fault zones where long‐term static loading induces creep deformation. This finding is in line with what is called process zone.
Experimental interpretation of seismically induced instability of mountain slopes
TOWHATA, Ikuo (author) / GUNJI, Keigo (author)
ce/papers ; 2 ; 255-260
2018-06-01
6 pages
Article (Journal)
Electronic Resource
English
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