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-波相互作用有关的实际工程问题。三维介质-结构-波相互作用分析是一项计算密集型任务，因此需要开发有效的数值程序来应用于工程问题。建议的研究是将文献[1]中概述的数值程序扩展和应用于以下问题：i)地震环境中埋地管道的动态响应，ii)海底管道对非线性水波和地震环境的动态响应，3)层状粘弹性介质的动力响应。因此，本文提出的工作结果将代表一些重要的贡献。对埋地海底管道对地震波的动态响应的研究将提供目前文献中没有的重要设计信息。由于提议修建一条横跨佐治亚海峡至温哥华岛的天然气管道，埋地海底管道对水波和地震的动态响应研究在不列颠哥伦比亚省至关重要。这些结果可能对是否解除近海钻探禁令的决定有用。不列颠哥伦比亚省海岸公司表示，上述项目的结合将导致长期目标，即开发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。姚军龙，姚，张晓.，《动力波浪-土-结构相互作用分析》，《国际计算机与结构杂志》，第83卷，第27期，第2206-2214页，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.