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- W2249880989 abstract "The vibration response of piled foundations due to ground-borne vibration produced by an underground railway is a largely-neglected area in the field of structural dynamics. However, this continues to be an important aspect of research as it is expected that the presence of piled foundations can have a significant influence on the propagation and transmission of the wavefield produced by the underground railway. This paper presents a comparison of two methods that can be employed in calculating the vi-bration response of a piled foundation: an efficient semi-analytical model, and a Boundary Element model. The semi-analytical model uses a column or an Euler beam to model the pile, and the soil is modelled as a linear, elastic continuum that has the geometry of a thick-walled cylinder with an infinite outer radius and an inner radius equal to the radius of the pile. The boundary element model uses a constant-element BEM formulation for the halfspace, and a rectangular discretisation of the circular pile-soil interface. The piles are modelled as Ti-moshenko beams. Pile-soil-pile interactions are inherently accounted for in the BEM equa-tions, whereas in the semi-analytical model these are quantified using the superposition of in-teraction factors. Both models use the method of joining subsystems to incorporate the inci-dent wavefield generated by the underground railway into the pile model. Results are computed for a single pile subject to an inertial loading, pile-soil-pile interactions, and a pile group subjected to excitation from an underground railway. The two models are compared in terms of accuracy, computation time, versatility and applicability, and guide-lines for future vibration prediction models involving piled foundations are proposed." @default.
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- W2249880989 date "2010-07-01" @default.
- W2249880989 modified "2023-09-26" @default.
- W2249880989 title "A comparison of two models for the vibration response of piled foundations to inertial and underground-railway-induced loadings" @default.
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