轻质填充墙框架自振周期折减系数的取值研究  

Research on the Discount Coefficient of Natural Vibration Period of Hollow-block Infilled Frame

作　　者：闫帅平[1] 夏文娟[2] 朱文静[3] 夏蕊芳[4] 

机构地区：[1]济源职业技术学院,河南济源454650 [2]中冶赛迪工程技术股份有限公司,重庆401122 [3]中冶南方工程技术有限公司,湖北武汉430074 [4]孝感学院,湖北孝感432000

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

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.

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 

分 类 号：TU375.4[建筑科学—结构工程]