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Doboku Gakkai Ronbunshu
This paper aims to analyze the stability of elliptic tunnel generally, to make clear the relations between stability and various physical values of ground and tunnel support. The stability of elliptic tunnel is discussed from the point of distortional strain energy by using Airy's stress function on elliptic coordinates represented by complex variable. As conclusions, it was shown that the safety index of ground around elliptic tunnel in any construction stage is composed of 6 nondimensionaldoi:10.2208/jscej.1990.424_197 fatcat:3mej7avfbfe7zelmswvyy76k2u