Dynamic Behavior of Inflatable Dams

本研究将对充气坝的动力特性进行研究。这种水坝在美国、澳大利亚和其他国家用于蓄水、防洪、导流、提高溢洪道高度和其他目的。它们作为一种可移动的防洪装置也有潜在的应用。尽管这些大坝中有一些是动态垮塌的，但已发表的分析只考虑了静力和挠度。本文将系统地研究充气坝的振动和动力响应。水坝可以通过空气、水或空气和水的结合来膨胀。大坝材料的作用就像一层膜，不能承受弯曲或压缩。将研究与流体和膜性质有关的各种假设的影响，例如不可压缩性和不可扩展性。将特别关注大坝局部或全局不稳定的情况。

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.