【摘要】 借助复频率和滞后阻尼系数的关系,利用等效前后结构复频率相等价的原理,推导出了钢结构-混凝土混合结构在实数范围内等效阻尼比的计算方法和表达式,并借助所建立的ANSYS有限元模型,计算出了某混合结构斜拉桥的等效阻尼比,此方法简便易懂,适用范围广。更多还原

【Abstract】 The paper deduced the calculation method and expressions of the equivalent modal damping ratio for the composite structure of steel-reinforced concrete in the scope of real number by the use of the relation between the plural frequency and hysteretic damping factor and the theory that the plural frequency is equivalent before and after equivalence.and then we calculated the equivalent modal damping ratio for a cable stayed bridge with the composite structure using ANSYS model.The method is simple and easily-understanding,and the applicable scope is broad.更多还原