【摘要】 柔性巨型摩天轮结构体型庞大,结构形式特殊,刚性轮缘与柔性拉索相结合,边界条件复杂。同时采用了力学解析分析模型和非线性有限元数值模型对柔性巨型摩天轮结构体系进行非线性静力分析和研究,并以某柔性巨型摩天轮结构项目为工程背景进行了实例验证与分析。非线性静力分析结果表明:预应力拉索的引入使得柔性巨型摩天轮结构具有明显的非线性特征,结构受力性态主要由初始态预应力决定;力学解析与有限元数值两种模型的计算结果比较吻合,力学解析模型能揭示结构的受力特性,具有较好的实用参考价值。更多还原

【Abstract】 The flexible giant Ferris wheel structure is huge and has a special structural design.It integrates a rigid rim with flexible cables and its boundary conditions are very complex.Nonlinear static analyses of a flexible giant Ferris wheel were carried out by using both mechanical analytical models and the nonlinear finite element models.The results of the nonlinear static analyses indicate:(1) Nonlinear characteristics of the flexible giant Ferris wheel structure are induced by the introduction of prestressed cables.Mechanical performances of the structure primarily depend on the initial prestressing force.(2) The calculation results from the mechanical analytical models are close to those obtained from the finite element analyses.The analytical models revealed the structural mechanical behaviors and can be used as reference for engineering practices.更多还原