粘滞阻尼器对平面“L”形框架结构减震效果

Analysis of damping effect of viscous damper to plane frame structure form

不规则框架混凝土结构的延性较差,地震时除了产生平移振动,还会产生扭转振动,从而引起结构破坏.文中针对L形框架结构,考虑不规则建筑的偏心影响,双向输入El-centro地震波,以顶层最大位移、层间位移、周期比及位移比作为控制参数,分析粘滞阻尼器对其的作用效果,得出设置粘滞阻尼器后结构的减震效果明显,最大位移减小率为5.63%-15.69%,最大层间位移减小率为13.5%-50.2%.

Owing to the poor ductility of irregular frame structure, so the structure not only produce translational vibration but also generates torsional vibration during the earthquake, resulting in structural damage. The article aims at L frame structure, and selected bidirectional El-centro earthquake wave considering the impact of irregular construction of the eccentric, taking the displacement of top floor, the displacement of interlamination, period ratio and displacement ratio as control parameter. Analyzing the viscous effect on structure, it is obvious for structure damping after setting viscous. The maximal displacement decrease rate is 5.63%- 15.69%,The maximal displacement of inte（lamination decrease rate is 13.5%-50.2%.