磁流变阻尼智能加固体系的试验研究

Experimental research on MRD intelligent seismic retrofitting of structure

提出利用磁流变阻尼器(MRD)对有损伤结构进行智能加固。根据MRD的特点,结合我国抗震设计规范,给出MRD智能加固的三个等级性能目标,对其进行量化,并确定MRD智能加固的设计要点。利用MRD对一有损伤钢筋混凝土框-剪偏心结构进行抗震加固,并进行振动台试验。结果表明,采用MRD智能加固后的结构抗震性能大大提高,优于用被动控制方法加固的结构。

The analysis and design method of seismic retrofitting for earthquake damaged RC frame shear wall structure using magnetorheological damper （MRD） is proposed. Three levels of fortification objects are put forward for intelligent retrofitting of RC frame shear wall structure using MRD, and the fortification objects are quantified. A concrete procedure is developed for seismic retrofit using MRD. The shaking table experiment of seismic retrofitting of earthquake damaged RC frame shear wall structure using MRD is implemented. The experimental results indicate that MRD can significantly enhance aseismic performance level of the seismic damaged RC frame shear wall structure, and meet all the earthquake fortification levels.