安东亚，  李承铭
    （上海现代建筑设计（集团）有限公司技术中心 上海 200041）

[摘要] 建筑结构在经历地震发生破坏后，其自身动力特性发生改变，通过了解这些动力特性的参数变化可以判断结构破坏的程度。而普通计算分析程序对带损伤结构的动力特性计算一般存在困难。文中讨论了一种实现损伤结构动力特性模拟的方法，利用通用程序ABAQUS实现了这一过程，最后对一个工程实例进行计算分析，并和常用的简化估算方法进行对比，结果表明本文方法的计算结果具有较好的可靠性。
[关键词] 损伤；动力特性；显式分析
中图分类号：TU311.3    文献标识码：A    文章编号：1002-848X(2011) Sl-0253-03

Study of the analysis method about the damaged structure's dynamic characteristics under seismic action
    An Dongya, Li Chengming
    ( Shanghai Xian Dai Architectural Design( Group)  Co., Ltd., Shanghai 200041, China)

Abstract: A building's dynamic characteristics will change ifit is damaged during the earthquake, and through study the change( such as the periodic change) the engineer can obtain a preliminary understanding of the structure's behavior and determine the extent of structural damage. The general calculation and analysis program always encounter difficulties on the problem about modal analysis to the damaged structure. The paper discusses a stimulation method about the dynamic characteristics of a damaged structure and put it into practice at the platform of ABAQUS software. The new method is
used in a real case and the result is compared to the simplified estimation method, which shows that the new method can give more precise result.
Keywords: damage; dynamic characteristics; explicit integral method