摘要
周期折减系数的取值直接影响地震作用下框架的反应,合理地确定周期折减系数,是框架结构抗震计算中的重要问题。本文根据ANSYS有限元模型,通过模态分析的方法,计算轻质填充墙框架自振周期折减系数,探讨框架由于填充墙分布不均匀及形成薄弱层情况下的自振周期折减系数取值问题,并提出了自振周期折减系数建议值,对《建筑抗震设计规范》(GB 50011-2010)第13.2.1条与《高层建筑混凝土结构技术规程》(JGJ3-2010)第3.3.17条进行了补充。
The discount coefficient value of natural vibration period has a strong impact on the seismic responses of RC frame structure,and it is important to take the right value in the seismic responses analysis of infilled frame.Based on the ANSYS finite element model and by modal analysis method,the discount coefficient value of infilled frame structure is calculated.the paper investigates the infilled walls non-homogeneous distribution which cause different soft storey,and the natural period of hollow-block infilled frame structure.Then the suggestion about the discount coefficient value of natural vibration period and the supplementary instructions for 13.2.1 in GB 50011-2010 and 3.3.17 in JGJ 3-2010 is given.
出处
《土木工程与管理学报》
2012年第2期103-107,共5页
Journal of Civil Engineering and Management
关键词
框架
砖砌体
空心砌块
填充墙
自振周期
折减系数
模态分析
RC frame structure
brick
light-block
infilled walls
natural vibration period
discount coefficient
model analysis
