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This thesis develops analytical solutions for estimating the bending moments and axial loads in a buried pipeline due to ground movements caused by tunnel construction in soft ground. The solutions combine closed-form, analytical solutions for tunnel-induced, free-field ground deformations in a plane orthogonal to the heading (Pinto and Whittle; 2001) with Winkler models for pipe-soil interacti...

Nowadays, the stress analysis mostly aimed at general buried pipelines. And few of the gas pipelines in tunnel (especially under the seismic action) were analyzed. Therefore, it is necessary to analyze the stress distribution of gas pipeline under seismic action in tunnel. In this paper, CEASAR II software was used to establish the stress model of China-Myanmar XX tunnel pipeline under seismic ...

Liquefaction hazard induced by seismic events might affect the stability of buried pipelines, with permanent displacements embedded structure as a consequence. In this context, pipe uplift is main concern, already widely discussed in literature. paper, further insights to assess phenomenon and related effects on pipelines are provided based results shaking table tests pipes different apparent u...

B lind Source Separation is now intensively studied and applied in many domains [1] [2] [3] [4]. It provides an excellent response, under some conditions, to problems of multiple perturbations. The application we have developed consists in creating an eddy current sensor able to identify buried metallic tags characteristic of different pipe contents. The main problem we met is the great influen...

This article develops a numerical model suitable for analysing elastic wave scattering in buried pipelines. The model is based on a previous so-called hybrid approach, where a nominally infinite length of pipe is split up into uniform and non-uniform regions. The key challenge for buried structures is in enforcing the appropriate boundary conditions in both the axial and radial directions, whic...

Ground Penetrating Radar (GPR) has been approved as very successful sensing device for various kinds of investigations & detection of buried targets like pipe, (Water, Gas, Electric) cable, archaeological objects, voids, unexploded ordinances (UXO) etc. Such GPR using electromagnetic pulse is required to reduce pulse-width for high resolution and increase transmitting power for signal enhanceme...