消能减震结构的损伤集中分布研究

消能减震结构是一种应用前景非常广泛的结构抗震体系。利用能量平衡的原理,采用质点系振动模型,通过对建筑结构模型进行地震响应和能量耗散的时程分析,讨论了在结构中设置薄弱层即消能层,控制结构在地震中的损伤集中分布在结构消能层的理论可行性,研究了所布置阻尼器及结构薄弱层的参数对损伤的集中程度的影响。结果表明设置消能层能够集中损伤,并可以减少消能层上部主体结构的截面尺寸,达到节省建筑材料提高经济效益目的。

CONVERGENT DISTRIBUTION OF THE DAMAGE OF ENERGY DISSIPATION SYSTEM

Passive energy dissipation structure is one popular aseismic structure for passive seismic control. In the study,building structure was considered as a mass-spring model,and a weak layer was installed to investigate the possibility of converging seismic energy damage on the weak layer. According to energy conservation,time-history analysis was employed to calculate the model’s seismic response and energy dissipation. Based on the result,the feasibility of controlling seismic energy dissipation is discussed. It is found that the metallic damper installed in the structure and the parameters of the weak layer affect the energy damage convergence.