Dynamic Behavior of Inflatable Dams

本研究将对充气坝的动力特性进行研究。在美国、澳大利亚和其他国家，这种大坝被用于蓄水、防洪、分流、提高溢洪道高程和其他目的。它们还具有作为可运输防洪装置的潜在应用。尽管其中一些大坝已经动态失灵，但已发表的分析只考虑了静力和挠度。对充气坝的振动和动力响应进行了系统的研究。水坝可以用空气、水或空气和水的混合气体充气。大坝材料的作用就像薄膜，不能承受弯曲或压缩。将研究与流体和膜性质相关的各种假设的影响，例如不可压缩和不可伸展。将特别关注大坝局部或全球不稳定的条件。

In this study, research on the dynamic behavior of inflatable dams will be undertaken. Such dams are used in the United States, Australia, and other countries for water impoundment, flood control, diversion of flow, raising spillway elevations, and other purposes. They also have potential application as a transportable flood control device. Even though a few of these dams have failed dynamically, published analyses have only considered static forces and deflections. The vibrations and dynamic response of inflatable dams will be studied systematically. The dams may be inflated by air, water, or a combination of air and water. The dam material acts like a membrane and cannot sustain bending or compression. The effects of various assumptions related to the fluid and membrane properties, such as incompressibility and inextensibility, will be investigated. Particular attention will be focused on conditions for local or global instability of the dam.