Study of Buildings and Long-Span Bridges under Wind Loads, Award in U.S. and Indian Currencies

技术说明：该提案支持协作 约翰大学的罗伯特·斯坎兰博士 霍普金斯大学和普莱姆克里希纳博士的大学 印度的鲁尔基。 实验将在科尔森 霍普金斯和新边界层的层流风洞 鲁尔基的隧道 研究将在具体的 桥面板截面模型和建筑物的使用和解释 模型在各自的风洞中。 积压的理论 在霍普金斯发展的颤振导数的使用， 确定风稳定性将使用相对于截面 鲁尔基和霍普金斯的模特。 再加上各种实验 为了获得颤振导数， 将对即将提供的数据进行解释。 研究 将解决确定详细的几何形状， 需要在甲板模型，以提高稳定性。 范围：为校长的差旅提供资金 调查人员在彼此的行动基地进行交流 以及在鲁尔基的实验工作。 的拟议合作 预计将继续发展的颤振 衍生物概念，被认为是风能领域的一个重大进步 工程，扩大国外的影响，美国的方法， 大跨度桥梁气动设计，并导致提高 两国的能力。 在印度，这项研究将 导致开发建模专业知识，以改善 设计和施工技术，技术教育， 最大限度地减少风暴造成的巨大损失。

Technical Narrative: This proposal supports collaborative research in wind engineering between Dr. Robert Scanlan of Johns Hopkins University and Dr. Prem Krishna of the University of Roorkee, India. Experiments will be conducted at the Corrsin laminar flow wind tunnel at Hopkins and at the new boundary layer tunnel at Roorkee. Research will be carried out on the specific use and interpretation of bridge deck section models and building models in the respective wind tunnels. A backlog of theory developed at Hopkins on the use of flutter derivatives in determining wind stability will be used relative to section models at Roorkee and Hopkins. Together with various experiments for obtaining flutter derivatives, new techniques for interpreting the forthcoming data will be applied. The research will address determining the detailed geometric forms needed in deck models to enhance stability. Scope: This supports funding for travel of the principal investigators for exchanges at each other's base of operations and for experimental work at Roorkee. The proposed collaboration is expected to continue the development of the flutter derivatives concept which is considered a major advance in wind engineering, to extend abroad the influence of U.S. methods of long-span bridge aerodynamic design, and to lead to enhanced capabilities in both countries. In India, this research will lead to developing modelling expertise, to the improvement of design and construction techniques, technical education and to minimization of the enormous damage caused by wind storms.