Analytical Solutions for Shallow Tunnels in Saturated Ground
Publication: Journal of Engineering Mechanics
Volume 127, Issue 12
Abstract
Estimates of ground deformations and liner stresses in a tunnel are usually obtained from empirical correlations or from past experience on similar tunnels. These correlations account for only a few of the significant factors, and extrapolation to other cases is questionable because similitude conditions are not generally fulfilled. In this paper, complete analytical solutions for a shallow tunnel in saturated ground are obtained. Two different drainage conditions have been considered: full drainage at the ground-liner interface, and no drainage. The solutions cover different construction processes and soil conditions: (1) dry ground; (2) saturated ground with and without air pressure; (3) with and without a gap between the ground and the liner; and (4) applicability for short term analysis (i.e., undrained excavation and liner installation) and for long term analysis. Since the ground and the liner are assumed to behave elastically, the solutions obtained are restricted to cases where ground deformations are small, such as stiff clays and rocks, or when the excavation method prevents large deformations of the ground.
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Information & Authors
Information
Published In
Journal of Engineering Mechanics
Volume 127 • Issue 12 • December 2001
Pages: 1258 - 1266
History
Received: Mar 14, 2000
Published online: Dec 1, 2001
Published in print: Dec 2001
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