Collaborative Research on Landslide Generated Tsunamis and Tsunami-Structure Interactions Using NEES Tsunami Basin Facilities

利用 NEES 海啸盆地设施对滑坡引发的海啸和海啸-结构相互作用进行合作研究

• 批准号: 0217744
• 负责人: Philip Liu
• 金额: --
• 依托单位: Cornell University
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2002
• 资助国家: 美国
• 起止时间: 2002-10-01 至 2007-03-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0217744&HistoricalAwards=false
• 关键词: Collaborative; Research; Landslide; Generated; Tsunamis

0217744, Philip Liu, Cornell University"Collaborative Research on Tsunami-Structure Interaction Using the NEES Tsunami Facility"This project addresses the forces generated by, and the destructive effects of, tsunamis. At some coastal locations, the tsunami runup occurs with a bore-like wave front with destructive energy - the steep wave front exerts high impact forces on coastal structures. In other locations, the greatest damage occurs during the rundown phase, where masses of water sweep already weakened structures back toward the ocean. As tsunamis move up and down a coast, they can transport large quantities of debris, such as cars, boats, boulders, and poles. These objects can impact and damage structures along the paths of the tsunami. Therefore, a means of estimating the forces on a structure resulting from the impact from a tsunami-borne moving object is needed.The objectives of this research program are. (1) To understand the dynamic interactions between a tsunami, rigid and flexible structures, and moving objects; (2) To improve the modeling capability of the complex runup flows within the context of their interactions with flexible structures and moving objects; and (3). To develop benchmark problems with high quality experimental data for validating numerical simulation models. These objectives are achieved via an integrated experimental and theoretical (numerical) research program. The analysis is based on the Reynolds Averaged Navier-Stokes (RANS) equations and the turbulence closure model, yielding simulation models describing the interactions between a tsunami, moving objects and flexible structures. To validate the simulation models, a series of experiments is conducted at the new Network for Earthquake Engineering Simulation (NEES) tsunami facility at Oregon State University. The research team at Cornell University also participates in the experiments at OSU, both in person and remotely using the facilities of the NEESgrid.This research operates at the interface between traditional fields of science and engineering - fluid dynamics, structural mechanics, soil mechanics and applied mathematics - and thereby serves as a bridge among these fields. The numerical simulation model being developed can be used as a research or design tool. For instance, engineers can use it to perform preliminary designs for offshore and coastal structures, and to study the impact of coastal structures on the environment. It can also be employed as a research tool to investigate ship slamming, submarine hydrodynamics, and mine detection methodology.

0217744，菲利普·刘（Philip Liu），康奈尔大学（Cornell University）“使用NEES海啸设施进行有关海啸结构互动的合作研究”该项目涉及由海啸产生的力量以及海啸的破坏性影响。 在某些沿海地区，海啸的奔跑发生在带有破坏力的孔状的阵线的情况下 - 陡峭的波浪前部对沿海结构施加了高影响力。 在其他位置，最大的损害发生在破败阶段，其中大量的水已经削弱了向海洋的结构削弱。 当海啸上下移动海岸时，他们可以运输大量的碎屑，例如汽车，船只，巨石和电线杆。 这些物体可以沿海啸路径影响和损坏结构。 因此，需要一种估算由海啸传播对象的影响产生的结构的力的方法。该研究计划的目标是。 （1）了解海啸，刚性和柔性结构以及移动对象之间的动态相互作用； （2）在其与柔性结构和移动对象的相互作用的背景下，提高复杂运行的建模能力； （3）。使用高质量的实验数据来开发基准问题，以验证数值模拟模型。 这些目标是通过综合实验和理论（数值）研究计划实现的。 该分析基于Reynolds平均Navier-Stokes（RANS）方程和湍流闭合模型，得出了描述海啸，移动对象和柔性结构之间相互作用的模拟模型。 为了验证模拟模型，在俄勒冈州立大学的新的地震工程模拟（NEES）海啸设施上进行了一系列实验。 康奈尔大学的研究团队还亲自和远程使用Neesgrid的设施参加了OSU的实验。这项研究在传统的科学和工程领域之间的界面运作 - 流体动力学，结构力学，土壤力学和应用数学 - 从而作为这些领域中的桥梁。 开发的数值模拟模型可以用作研究或设计工具。 例如，工程师可以使用它来对海上和沿海结构进行初步设计，并研究沿海结构对环境的影响。 它也可以用作研究船，海底流体动力学和矿山检测方法的研究工具。