Experimental results show that mechanical behaviors of viscoelastic dampers are greatly affected by ambient temperature. Neglecting the ambient temperature effect will lead to an inaccurate seismic evaluation on viscoelastically damped structures. This study investigates the ambient temperature effect on the seismic performance of viscoelastically damped structures. An efficient algorithm is proposed to solve the seismic response of viscoelastically damped structures at different ambient temperatures based on the time–temperature correspondence. Numerical simulations of a ten-story viscoelastically damped steel frame under historical earthquakes are presented to illustrate the ambient temperature effect on the seismic performance. The results show that the natural frequency decreases with the increase in ambient temperature, whereas the damping ratio change with ambient temperature greatly depends on the viscoelastic damper properties. The seismic displacement reduction, in general, decreases with the increase in ambient temperature. The seismic acceleration reduction with ambient temperature is affected by the viscoelastic damper properties, structural parameters, and earthquakes together.

实验结果表明，粘弹性阻尼器的力学性能受环境温度的影响很大。忽略环境温度的影响将导致对粘弹性阻尼结构的地震评估不准确。本研究探讨了环境温度对粘弹性阻尼结构抗震性能的影响。提出了一种有效的算法，根据时间-温度对应关系，求解粘弹性阻尼结构在不同环境温度下的地震响应。提出了在历史地震作用下的十层粘弹性阻尼钢框架的数值模拟，以说明环境温度对抗震性能的影响。结果表明，固有频率随着环境温度的升高而降低，而阻尼比随环境温度的变化在很大程度上取决于粘弹性阻尼器的性能。通常，地震位移的减小随着环境温度的升高而减小。地震加速度随环境温度的降低受粘弹性阻尼器特性，结构参数和地震的共同影响。