轻钢住宅结构体系的动力特性研究

通过轻钢结构的动力特性的研究,为今后轻钢住宅的结构设计提供参考。运用AN-SYS有限元计算软件对多层（6层）和小高层（10层）国家标准AAA级住宅进行建模分析,在模型设计中分别采用纯框架结构、框架-支撑结构和框架-核心筒结构,通过模态分析、8度区多遇地震下的反应谱分析和8度区多遇、罕遇地震下的时程分析,得到三种结构体系的自振周期、各层质心位移、层间位移角、多遇和罕遇地震下节点位移时程曲线,经过比较分析,总结三种结构形式的动力特性。分析结果表明,纯框架结构适用于低多层和中低烈度的轻钢住宅。

Analysis of Dynamic Characteristics of Light Steel Structure Residential System

Research on dynamic characteristics of light steel structure is to provide reference to designing of future light steel residence structure.By using finite element software ANSYS multi-storey（6 storeys） and small high-rise（10 storeys） residence of National Institute of Standards AAA-class was modeled and analyzed.In model design pure frame structure,frame-brace structure and frame-tube wall structure were adopted separately.By modal analysis,response spectrum analysis of earthquake frequently occurred in 8-degree intensity region and time history analysis of earthquake frequently or seldom occurred in 8-degree intensity region,self-vibration period,centroid displacement of each storey,drift angle between storeys and node displacement time-history curve in case of earthquake frequently occurred and rarely occurred for the 3 kinds of structure system were obtained.On the basis of comparative analysis dynamic characteristics of the three structure forms were summarized.The analysis showed that pure frame structure is suitable for low multi-storey light steel residence in region of middle or low-intensity earthquake.