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中国科学技术新馆工程,结构体系复杂,运用多种组合材料和结构形式,根据现行建筑抗震规范要求,需进行罕遇地震作用的性能评估,对薄弱环节进行加强。鉴于结构特点不适用振动台试验,因此运用非线性有限元程序CANNY软件,对剪力墙、预应力框架和钢-混凝土组合桁架建立合理的滞回模型,合理模拟滑动支座和预应力钢绞线,重点分析了复杂混合体系的动力特性和罕遇地震作用的非线性响应,评估结构的耗能能力,加强薄弱环节,提高结构的抗震性能。探讨复杂结构非线性动力弹塑性分析的手段和方法。
China Science and Technology Museum project, the structure of complex systems, the use of a variety of combinations of materials and structural forms, according to the current seismic code requirements of buildings, the need for the performance evaluation of rare earthquakes, the weak links to be strengthened. In view of structural characteristics not suitable for shaking table test, a reasonable hysteretic model is established for the shear wall, prestressed frame and steel-concrete composite truss using nonlinear finite element program CANNY software to reasonably simulate the sliding bearing and prestressed steel strand This paper focuses on the analysis of the nonlinear response of complex hybrid systems to dynamic characteristics and rare earthquakes, assesses the energy dissipation capacity of the structure, strengthens the weak links and improves the seismic performance of the structure. Methods and Methods for Nonlinear Dynamic Elastoplastic Analysis of Complex Structures.