Numerical studies of wave interaction with structures and related problems

正在进行的研究计划的目标是开发强大的设计工具，能够解决与介质-结构-波相互作用相关的实际工程问题。 三维介质-结构-波浪相互作用分析是一项计算量很大的工作，因此需要开发有效的数值程序以应用于工程问题。 本文将文献[1]中的数值方法推广应用于以下问题：地震环境中埋地管道的动力响应，海底管道对非线性水波和地震环境的动力响应，层状粘弹性介质的动力响应。 这里提议的工作成果将是一系列重大贡献。 研究埋地管道对地震波的动力响应将为设计提供重要的设计信息，而研究埋地海底管道对水波和地震的动力响应在不列颠哥伦比亚省具有极其重要的意义，因为有人建议建设一条穿越格鲁吉亚海峡到温哥华岛的天然气管道。 这些结果可能有助于决定是否解除对不列颠哥伦比亚省沿海近海钻井的暂停。 上述项目的结合将导致长期目标，这是能够解决与动态介质结构波系统相关的实际工程问题的最先进的程序的发展。[1]Wegner，J.L.，Yao，M.M.，和Zhang，X.，“时域内波浪-土-结构动力相互作用分析”，《国际计算机与结构学报》，第83卷，第27期，页。2206-2214，2005。

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.