基于等效线性化理论的消能减震结构附加金属阻尼确定方法

Metal Damping Design of Energy Dissipation Structure Based on the Equivalent Linearization Theory

本文采用等效线性化理论研究消能减震结构附加金属阻尼的确定方法。利用等效线性化理论,演算推导出附加金属阻尼器的消能减震结构的减震性能曲线,并介绍利用其进行消能减震结构附加金属阻尼的确定方法—减震性能曲线法。建立30层钢框架结构消能减震结构模型,利用减震性能曲线法对其附加金属阻尼量进行确定。利用时程分析法验证了利用减震性能曲线法设计的消能减震结构的减震性能。研究表明,减震性能曲线法能够较好的预测消能减震结构附加金属阻尼的减震性能,减震性能曲线法的设计效果优于屈服强度倍数法。

Equivalent linearization theory is used to study the metal damping of energy dissipation structure. The vibration-absorption performance curve of energy dissipation structure with metal damping is introduced based on equivalent linearization theory, with which a new method is proposed for metal damping design of energy dissipation structure--vibration-absorption performance curve method. A 30-storey energy dissipation steel structure is designed, the metal damping of which is designed using the vibration-absorption performance curve method. Time history method is employed to study the aseismic performance of the 30-storey energy dissipation steel structure with metal damping. Results show that the vibration-absorption performance curve method is better than the multiple-yield- strength method, and the vibration-absorption performance curve method can predict the vibration-absorption performance of energy dissipation structure with metal damping effectively.