基于等效线性化方法的软钢阻尼器结构设计方法

Mild Steel Damper Structure Design Method Based on Equivalent Linearization

结构进行消能减震设计的关键是准确合理估计消能器的动力行为,位移型消能器的等效刚度及其附加给结构的有效阻尼比与结构位移大小有关.该文提出一种基于等效线性化方法的消能减震结构设计方法,该方法可迭代计算出消能器的等效刚度及其附加给结构的有效阻尼比,从而可采用基于弹性理论的振型分解反应谱法计算消能减震结构的地震反应,并采用一工程实例验证了该设计方法的正确性与有效性.

An accurate estimation of the dynamic behavior is the key to the design of the energy dissipation device. The equivalent stiffness of the displacement type of energy dissipation device and its effective damping ratio attached to the structure is related to the size of the displacement of the structure. In this paper,a design method of energy dissipation structure based on equivalent linearization is proposed. This method can iterate to calculate the equivalent stiffness of energy dissipation and its effective damping ratio attached to the structure. The seismic response of the energy dissipation damping structure is then determined by the mode-superposition response spectrum method based on elastic theory. The effectiveness and correctness of the design method is validated by an engineering example.