摘要
对基于位移的抗震设计方法单自由度体系弹塑性位移计算的等效线性化方法中的等效阻尼模型进行研究。在统计分析的基础上,提出了考虑场地类别和设计地震分组的等效阻尼比公式,并与不同阻尼比公式进行了比较。对不同等效线性化方法的计算误差进行了统计分析,结果表明,本文建议的公式在预测单自由度体系位移反应方面与动力弹塑性分析结果在统计意义上吻合得最好。
The equivalent damping ratio is researched for displacement-based seismic design method, which is used to calculate the single-degree-of-freedom system plastic displacement. Based on the statistical analysis, the equiva- lent damping ratio formula is presented by considering soil classification and design characteristic. The different e- quivalent damping ratio formulas are compared. The calculation error of different equivalent linear methods is ana- lyzed under seismic ground motions. The results show that the proposing formula well matches the dynamic elasto- plastic analysis.
出处
《地震工程与工程振动》
CSCD
北大核心
2013年第4期134-139,共6页
Earthquake Engineering and Engineering Dynamics
基金
中国博士后科研基金项目(2012M511958)
国家自然科学基金项目(51078305
51078037)
关键词
单自由度体系
等效线性化方法
等效阻尼比
场地类别
设计分组
single degree freedom system
equivalent linear method
equivalent damping ratio
soil classification
design characteristic
