A Comparative Study on Maximum Shear Strain Distribution in a Layered Viscoelastic Medium

Year 2018, Volume: 8 Issue: 3, 1571 - 1578, 10.07.2018

Kaveh Dehghanıan Mustafa Tolga Yılmaz

Abstract

Abstract - For practical calculations, the ovaling and racking deformations on buried structures are estimated by estimating the

maximum shear strain (γmax) in imperforated ground using vertically incident shear waves (Vs). The relationship between maximum

shear strain (max )and depth in a uniformly elastic half-space is a function of shear-wave velocity in the uniform medium and

acceleration history in free field. In this study, the relationship between the distribution of max in elastic half space and in layered

medium is examined by supposing that the travel time of shear waves from the free boundary to a depth of interest in a layered

medium is equal to d/Vs. Different variety of strong ground motion time histories and three Vs profiles are used for analyses. The

effect of nonlinear material response to shearing was investigated by using the method of equivalent linearization.

Keywords

Shear strain, underground structures, ovaling, racking, free field

References

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