U.S.-Austria Cooperative Research: Fracture Mechanics Case Studies of Concrete Dams

该奖项支持康奈尔大学的Anthony R. Ingraffea博士与维也纳技术大学力学研究所的Hans P. Rossmanith博士的一项研究合作。他们合作研究的目标是进一步了解大型混凝土大坝裂缝的过程，创建一个模拟能力来诊断裂缝的原因和评估修复程序，并将由此产生的新知识和经验纳入改进的新大坝建设设计程序。奥地利在建造混凝土大坝方面处于世界领先地位。在大坝业主或运营商的合作下，将对目前正在维修或建设中的奥地利和美国的一些大坝进行案例研究。模拟将基于先进的结构力学（包括断裂力学、损伤分析和失效分析）、数值建模方法（包括有限和边界元素建模）和最先进的交互式计算机图形学。将特别强调通过设计避免和控制裂缝的问题，以及技术上合理和具有成本效益的修复裂缝大坝的问题。混凝土大坝的裂缝是一个相当重要的问题。从这些案例研究中获得的结果应该指导和支持大型混凝土大坝的设计者、建设者、操作员和维修人员。该项目的合作性质将加速模拟能力的发展，拓宽双方的数据和知识基础，促进大坝所有者和运营商之间更好的合作，并将实用的故障分析专业知识传授给美国，将3d模拟专业知识传授给奥地利。

This award supports Dr. Anthony R. Ingraffea of Cornell University in a research collaboration with Dr. Hans P. Rossmanith of the Institute of Mechanics of the Technical University of Vienna. The objectives of their cooperative research are to further the understanding of the process of cracking in large concrete dams, to create a simulation capability to diagnose the cause of cracking and evaluate repair procedures, and to incorporate the resulting new knowledge and experience into improved design procedures for new dam construction. Austria is among the world leaders in the construction of concrete dams. Case studies of a number of Austrian and U.S. dams currently under repair or construction will be performed with the cooperation of the owners or operators of the dams. Simulations will be based on advanced structural mechanics (including fracture mechanics, damage analysis, and failure analysis), numerical modelling methods (including finite and boundary elements modelling), and state-of-the-art interactive computer graphics. Special emphasis will be given to the problems of crack avoidance and control by design, and technically sound and cost-effective repair of cracked dams. Cracking in concrete dams is a problem of considerable importance. The results obtained from these case studies should guide and support designers, builders, operators, and repair personnel of large concrete dams. The cooperative nature of the project will hasten the development of simulation capability, broaden the data and knowledge bases on both sides, engender better cooperation from owners and operators of the dams, and transfer practical failure analysis expertise to the U.S. and 3-D simulation expertise to Austria.