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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
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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