A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Triggering of liquefaction flow slides in coastal soil deposits
Abstract Liquefaction flow slides have been observed in coastal soil deposits throughout the world. The causes of many of these slides have never been well understood. The materials involved in and circumstances surrounding eight reported liquefaction flow slides are reviewed and compared. Many of these slides have occurred in very similar materials shortly following small to moderate drawdowns of the adjacent water level. Liquefaction susceptibility of sands may be evaluated by steady state methods. Recent research indicates that liquefaction of loose sands similar to those typically involved in these slides may be triggered by very small changes in stress conditions if the sand is initially in equilibrium under high shear stresses. The triggering of liquefaction may lead to flow sliding if the unbalanced driving stresses exceed the steady state strength of the liquefied soil. Elasticity methods are used to estimate the initial stress conditions in a gentle, infinite slope, and the effect of unloading due to drawdown. It is shown that liquefaction flow slides in coastal soil deposits may be initiated by small to moderate drawdowns consistent with those observed in actual slides.
Triggering of liquefaction flow slides in coastal soil deposits
Abstract Liquefaction flow slides have been observed in coastal soil deposits throughout the world. The causes of many of these slides have never been well understood. The materials involved in and circumstances surrounding eight reported liquefaction flow slides are reviewed and compared. Many of these slides have occurred in very similar materials shortly following small to moderate drawdowns of the adjacent water level. Liquefaction susceptibility of sands may be evaluated by steady state methods. Recent research indicates that liquefaction of loose sands similar to those typically involved in these slides may be triggered by very small changes in stress conditions if the sand is initially in equilibrium under high shear stresses. The triggering of liquefaction may lead to flow sliding if the unbalanced driving stresses exceed the steady state strength of the liquefied soil. Elasticity methods are used to estimate the initial stress conditions in a gentle, infinite slope, and the effect of unloading due to drawdown. It is shown that liquefaction flow slides in coastal soil deposits may be initiated by small to moderate drawdowns consistent with those observed in actual slides.
Triggering of liquefaction flow slides in coastal soil deposits
Kramer, S.L. (author)
Engineering Geology ; 26 ; 17-31
1987-10-19
15 pages
Article (Journal)
Electronic Resource
English
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