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基于振型的Pushover方法的研究与实例
Research on Mode-Based Pushover Method and Engineering Example
【摘要】 振型和频率仅与质量和刚度有关,由结构外形唯一确定,故称之为特征参量。振型为结构位移的完备正交基,基于振型加载模式的Pushover方法较其他方法更加合理。采用结构质量参与系数控制振型参与计算数量,振型数有了量化标准,使精度满足安全需要。最后通过实例阐述多模态自适应Pushover方法的实施过程。
【Abstract】 Mode and frequency are only related with mass and stiffness,which are decided by structure shape.So the mode and frequency are also called character parameters.Because mode is self-contained orthotropic matrix,loading based on it is more rational than other loading method.Mass participating ratio is utilized to control the quantization mode number.As a result,calculating mode has measurement criteria,and the precision meets the safety demand.At last,an engineering example is employed to illustrate the multiple mode adaptive pushover method.
【关键词】 特征参量;
pushover;
质量参与系数;
地震;
位移;
【Key words】 character parameter; pushover; mass participating ratio; earthquake; displacement;
【Key words】 character parameter; pushover; mass participating ratio; earthquake; displacement;
【基金】 国家自然科学基金(50978232)资助项目
- 【文献出处】 建筑科学 ,Building Science , 编辑部邮箱 ,2012年03期
- 【分类号】TU311.3
- 【被引频次】6
- 【下载频次】235