Numerical studies of wave interaction with structures and related problems

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The objectives of the ongoing research program are the development of powerful design tools capable of solving practical engineering problems associated with medium-structure-wave interaction.   Three dimensional medium-structure-wave interaction analysis is a computationally intensive task, consequently it is desirable to develop efficient numerical procedures for application to engineering problems.     The proposed research is to extend and apply the numerical procedure outlined in [1]  to the following problems: i) the dynamic response of buried pipes in a seismic environment, ii) the dynamic response of submarine pipelines to nonlinear water waves and a seismic environment, iii) the dynamic response of layered viscoelastic medium.     The results of the work proposed here would represent a number of significant contributions.  The study on the dynamic response of buried  pipelines to seismic waves will provide important design information currently not available in the literature.The study on the dynamic response of buried submarine pipelines to water waves and earthquakes is of paramount importance in B.C. because of the proposal to construct a natural gas pipeline across Georgia Strait to Vancouver Island.   The results may be useful in the decision on whether to lift the moratorium on offshore drilling off the coast of B.C.     The combination of the above projects will lead to the long term goal which is the development of state of the art programs capable of solving practical engineering problems associated with dynamic medium-structure-wave systems.[1]Wegner, J.L., Yao, M.M., and Zhang, X., "Dynamic Wave-Soil-Structure Interaction Analysis in the Time Domain", International Journal of Computers and Structures", Vol. 83, Issue 27, pp. 2206-2214, 2005.