（北京市建筑设计研究院，北京 100045）

［摘要］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。

［关键词］科技馆；混合结构；预应力；CANNY；非线性；有限元；抗震

Nonlinear dynamic elastic-plastic analysis of  complex steel-concrete composite structure

Li Ting, Zhao Nan(Beijing Institute of Archtectural Design, Beijing 100045, China)

Abstract:The project of New Museum of Science and Technology of China, using a variety of combinations of materials and structural form,need evaluated the rare earthquake performance,and find out the weak links to  be strengthened. For structural characteristics of shaking table tests do not apply, the non-linear finite element program software CANNY is used for shear uall,prestressed frame and steel-concrete composite truss,  to establish a rational, reasonable hysteretic model,and simulate  sliding bearings.It focused on analyzing the complex dynamic characteristics of the hybrid systems, and the non-linear response  under rare earthquake, to assess the structure′s energy dissipation capacity, strengthen weak links, improve the structure  seismic performance.It explores  the means and methods of the composite structure for nonlinear dynamic elasto\|plastic analysis.

Keywords:science museum; composite structures; prestressed; CANNY; nonlinear; FEM;  seismic

作者简介：李婷，高级工程师，Email：Biad1s1@126.com。

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