水电站大型挡水闸上部结构与基岩耦联的抗震研究

发布时间：2018-06-20 02:36

本文选题：水闸 + 抗震　；参考：《昆明理工大学》2014年硕士论文

【摘要】：大型混凝土挡水闸具有挡水发电和泄洪的双重功能,通常由坐落在基岩上的大体积混凝土结构和上部高矗的闸门启闭结构系统构成,结构布置形式复杂,在强地震作用下,结构系统的响应机制复杂,上部杆系结构震动放大作用效应明显,表现出极为复杂的动力学特性。本文在收集和总结前人研究的基础上,利用大型商用有限元软件ANSYS,进行了以下三个方面的工作。(1)对大型混凝土挡水闸在静力作用下的受力状态进行了分析。利用ANSYS,对结构进行了线性分析,既研究了结构在理论状态下的受力情况,又能够贴近工程实际。(2)利用matlab和SeismoSignal对地震波进行FFT分析并对地震波的数据进行处理,遴选出适合本文计算的地震波。(3)采用振型分解反应谱法和时程动力分析法对大型混凝土挡水闸进行了抗震性能的分析。我国80%的水能资源在西部,而西部地区地质条件复杂,地震频繁、强度大,随着我国西部水利工程的建设的快速发展,高坝大库的建设也越来越多。所以本文就此进行研究,有着十分重要的实践意义。
[Abstract]:The large - scale concrete dam has the dual functions of water - retaining power generation and flood discharge , which is usually composed of a large - volume concrete structure and a high - height gate open - close structure system , which are arranged on the bedrock , and the structure layout is complex . Under the action of strong earthquakes , the response mechanism of the structural system is complex , and the vibration amplification effect of the upper rod system structure is obvious , and the extremely complex dynamic characteristic is exhibited .

On the basis of collecting and summarizing the previous research , this paper analyzes the stress state of large concrete dam by using ANSYS .

80 % of the water resources in China are in the west , while the geological conditions in the western region are complex , the earthquakes are frequent and the strength is large . With the rapid development of the construction of the western water conservancy projects in China , the construction of the high dam is more and more . Therefore , this paper has very important practical significance .
【学位授予单位】：昆明理工大学
【学位级别】：硕士
【学位授予年份】：2014
【分类号】：TV66;TV312

【参考文献】