Abstract
There is a large number of underground tunnels of various shapes located in seismic zones that need to be protected from seismic impacts. The paper considers the effect of harmonic surface waves on a cylindrical inclusion of various shapes located in a viscoelastic half-plane. The main purpose of the study is to determine the stress-strain state of the obstacle when exposed to harmonic waves. The problem is solved by the finite element method. It was found that the maximum stress concentration is allowed at long waves, and the stress concentration with increasing depth and wavelength approaches the static value of stress. The reliability of the obtained research results is confirmed by good agreement with theoretical and experimental results obtained by other authors.
Highlights
IntroductionThe arching effect has hardly been experimentally studied
In the dynamic case, the arching effect has hardly been experimentally studied
A number of experimental studies were carried out in order to assess the distribution and effects of arches, it was found out that the pressure acting on the length of the rate does not depend on the structure of the stress distribution in the soil layer located above its surface at a distance of two or three of its width, the results of one of the experiments are the vertical component of pressure, v depth Z = H without the effect of strength was vh
Summary
The arching effect has hardly been experimentally studied. A number of experimental studies were carried out in order to assess the distribution and effects of arches, it was found out that the pressure acting on the length of the rate does not depend on the structure of the stress distribution in the soil layer located above its surface at a distance of two or three of its width, the results of one of the experiments are the vertical component of pressure, v depth Z = H without the effect of strength (i.e., hydrostatic load) was vh. As can be seen from the figure, for a soil layer with a thickness of Z < 0.4(Zb > 2s) on the stress distribution diagram, there is no decrease in the vertical component due to the absence of a durable effect.
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