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ANALYSIS AND OVERVIEW OF DYNAMIC CHARACTERISTICS OF FLUID-STRUCTURE COUPLING SYSTEM FOR U-SHAPED AQUEDUCT

机译:U形渡槽流固耦合系统动力特性的分析与概述。

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The aqueduct is substantial water distribution building in the South-to-North Water Diversion Project. Especially U-shaped aqueduct is superior structure form according to water conditions, which is extensively used in the large-scale water transfer process. The static analysis of aqueduct has been more perfect at home and abroad currently. But the literature whose main objective is the analysis of the dynamic characteristics concentrated on the seismic and wind load is rare. During the process of research focused on the dynamic characteristics, there exist some problems unsolved which contain the model establishment, the analysis of fluid-structure coupling system and the analysis of dynamic response. At the first part, this paper discusses several domestic and foreign model establishment methods of surging wave of water comparatively which include the additional mass method, Housner method and ALE method, and analyzes the trait and applicability of those methods. Then it introduces the method of simulating wind field to elicit the model establishment method of wind-aqueduct-fluid coupling system and proposes to develop the research of its wind-resistant dynamic traits based on the seismic analysis method of fluid-structure coupling system for U-shaped aqueduct. The study of vibration mechanism which is about fluid-structure coupling system for aqueduct contributes to realize its workable and load-bearing characteristics of aqueduct structure in-depth, providing theoretical basis and technical support in the nationwide promotion of aqueduct.
机译:该渡槽是南水北调工程中大量的水分配建筑物。特别是U形渡槽根据水的条件是优良的结构形式,被广泛用于大规模的输水过程中。目前,国内外对渡槽的静态分析更加完善。但是,以分析地震和风荷载为动力特征为主要目标的文献很少。在研究动力特性的过程中,存在一些尚未解决的问题,包括模型的建立,流固耦合系统的分析以及动力响应的分析。在第一部分中,比较地讨论了国内外水浪涌动模型的建立方法,包括附加质量法,Housner法和ALE法,并分析了这些方法的特点和适用性。然后介绍了模拟风场的方法,以引证水—水—流—固耦合系统的模型建立方法,并提出了基于U型流固耦合分析方法的抗风动力特性研究。形的渡槽。对渡槽流固耦合系统的振动机理的研究有助于深入认识渡槽结构的工作和承载特性,为渡槽在全国范围内的推广提供了理论依据和技术支持。

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