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Civil-Comp Proceedings
ISSN 1759-3433
CCP: 23
ADVANCES IN SIMULATION AND INTERACTION TECHNIQUES
Edited by: M. Papadrakakis and B.H.V. Topping
Paper II.8

A Unilateral Contact Numerical Approach to Seismic Soil-Pipeline Interaction Problem

A. Liolios*, S. Tsalkatidis* and K. Pitilakis#

*Department of Civil Engineering, Democritus University of Thrace, Xanthi, Greece
#Department of Civil Engineering, Aristotle University, Thessaloniki, Greece

Full Bibliographic Reference for this paper
A. Liolios, S. Tsalkatidis, K. Pitilakis, "A Unilateral Contact Numerical Approach to Seismic Soil-Pipeline Interaction Problem", in M. Papadrakakis, B.H.V. Topping, (Editors), "Advances in Simulation and Interaction Techniques", Civil-Comp Press, Edinburgh, UK, pp 73-76, 1994. doi:10.4203/ccp.23.2.8
Abstract
The paper deals with a numerical approach for the seismic soil-pipeline interaction considered as an inequality problem of structural engineering. So, the unilateral contact conditions due to tensionless and elastoplastic softening fracturing behaviour of the soil as well as due to gapping are taken into account. The numerical approach is based on a double discretization and on mathematical programming. Thus, in space the finite element method is used for the pipeline and the unilateral contact, and in time the Newmark method. Finally, a nonconvex linear complementarity problem is solved in each time step.

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