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以我国西南强地震高发区域正规划、设计或开工建设一批高坝大库型水电工程项目为背景,依托长河坝工程的发电引水进口塔,研究了强地震激励作用下高进水塔的力学行为和结构性能.通过三维有限元建模并由反应谱计算结果,分析进水塔结构在地震作用下的危险部位,通过对结构体型不断优化,得到对抗震设计和降低投资成本均有利的最优体型.研究结果对类似工程选择合理高效的塔体体型、建立相应的结构安全评价准则具有一定的参考意义.
Based on the planning, design or construction of a large number of high-dam large reservoir hydropower projects in the high-incidence area of southwest China’s strong earthquakes, based on the hydropower inlet tower of Changhe Dam Project, the mechanical behavior of high-intake towers under strong earthquake excitation and Structural performance.According to the three-dimensional finite element modeling and the results of the response spectrum calculation, the dangerous parts of the intake tower structure under earthquake action are analyzed. By optimizing the structure type continuously, the optimal shape for the seismic design and the investment cost reduction are obtained The research results have some reference significance for choosing reasonable and efficient tower body shape for similar projects and establishing corresponding structural safety evaluation criteria.