Stress-Strain State of a Shallow Tunnel Supported by a Three-Layer Shell Affected by Transport Loads

2022

Closed access Metadata (CSL-JSON)
DOI 10.3103/s0025654422070032
Data confidence 70 medium
How this score is calculated

It is built from checkable properties of the record itself: whether the article has a DOI, how many independent sources confirmed its data, whether the required fields are filled in, and how recent the latest confirmation is. Disagreement between sources and a missing identifier lower it. A value of 80 or above means the record was published without further checking; 60 to 79 means it is published at reduced confidence, with a manual check advisable. A record verified by an editor by hand is never pushed below 90 by a recalculation. This scores our data about the article, not the article itself.

Abstract

Abstract The problem of the effect of a load moving at a constant velocity over a three-layer circular cylindrical shell in an elastic half-space is solved. The dynamic equations of the elasticity theory in the Lamé potentials are used to describe the motion of the half-space and the inner layer of the shell. Oscillations of the outer layers of the shell are described based on the classical equations of the theory of thin shells. The solution has been obtained for the case when the velocity of the load is less than the velocity of the Rayleigh wave and the critical velocities of the latter. Based on the solution of the problem, the stress-strain state is studied for a shallow tunnel reinforced with the use of a three-layer steel-concrete lining affected by a symmetric or asymmetric normal load originating from the intratunnel transport uniformly moving along its tray.