【作者】 王依群； 王福智； 温洪星；

【Author】 WANG YIQUN, WANG FUZHI, WEN HONGXING(School of civil engineering, Tianjin university, Tianjin, 300072, China; City University of Hong Kong, Hong Kong, China)

【机构】 天津大学建筑工程学院； 香港城市大学；

【摘要】 钢框架-钢筋混凝土核心筒混合结构各部分阻尼特性不同形成非比例阻尼结构,为了计算上的简便,设计中常使用折算阻尼比将此非比例阻尼结构简化为比例阻尼结构。例如《高层建筑混凝土结构技术规程》就规定此类结构的折算阻尼比可取为0.04。本文通过一多遇地震作用下的工程实例使用非比例阻尼模型和折算阻尼模型分别进行时程计算,发现两者结果差异较大,最后对设计提出建议。更多还原

【Abstract】 The reinforced concrete core wall-steel frame hybrid structures is a nonproportional damping system. In practical structural designs, equivalent damping ratio is used and specified be 0.04 in the Technical Specification for Concrete Structures of Tall Building JGJ3-2002 of China. In this paper, a reinforced concrete core wall-steel frame hybrid structure under earthquake is calculated by using time history method in elastic range, with the two damping models, respectively. The difference of the two damping models is analyzed. It is found that damping model obviously affect the results of dynamic time history calculations. Some suggestion of suitable equivalent damping ratio of the structures is put forward.更多还原