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Soil–structure interaction in the time domain using halfspace Green's functions

✍ Scribed by Christopher Bode; Reinhold Hirschauer; Stavros A. Savidis

Publisher
Elsevier Science
Year
2002
Tongue
English
Weight
522 KB
Volume
22
Category
Article
ISSN
0267-7261

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✦ Synopsis

A time-domain formulation is proposed for the transient response analysis of general, three-dimensional structures resting on a homogeneous, elastic halfspace subjected to either external loads or seismic motions. The formulation consists of two parts: (a) the time domain formulation of the soil behaviour and (b) the coupling of the corresponding soil algorithms to the Finite Element Code ANSYS. As far as the structure is concerned, this coupling opens the way for the analysis of non-linear soil±structure interaction. The approach is based on halfspace Green's functions for displacements elicited by Heaviside time-dependent surface point loads. Hence, the spatial discretisation can be con®ned to the contact area between the foundation and the soil, i.e. no auxiliary grid beyond the foundation as for conventional boundary element formulations is required. The method is applied to analyse the dynamic response of a railway track due to a moving wheel set by demonstrating the in¯uence of `through-the-soil coupling'.

📜 SIMILAR VOLUMES

Three-dimensional dynamic soil-structure
Three-dimensional dynamic soil-structure interaction analysis in the time domain
✍ Zhang, Xiong; Wegner, J. L.; Haddow, J. B. 📂 Article 📅 1999 🏛 John Wiley and Sons 🌐 English ⚖ 283 KB 👁 2 views

A new numerical procedure is proposed for the analysis of three-dimensional dynamic soil}structure interaction in the time domain. In this study, the soil is modelled as a linear elastic solid, however, the methods developed can be adapted to include the e!ects of soil non-linearities and hysteretic