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| The transient response of cylindrical lining in poroelastic saturated half-space |
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Abstract Buried lined tunnels are often subject to internal dynamic loading, such as blast loading and impact loading. The dynamic stress concentration of lining structure due to various dynamic sources is a special concern in practical engineering. The transient dynamic response of a cylindrical lining subjected to sudden internal uniform loading has been presented with the Laplace transform and the method of the separation of variables. The wave potentials in a homogeneous saturated half-space were expanded in Fourier-Bessel series using the wave function expansion method. A convex approximation was used to replace the straight boundary of the half-space. In terms of continuity conditions and boundary conditions of the problem, the unknown coefficients in potentials were determined by coordinate transform. The dynamic responses of the lining structure in saturated half-space are discussed for the different buried depth of lining. The study is reasonable for engineering practice and provides an effective method for analyzing the similar problem about dynamic response of underground structure.
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Received: 02 November 2010
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2012, Vol. 33 
