钢-混凝土组合结构基础隔震的振动台实验分析

Experimental study on shaking table of base isolation for steel-concrete composite structures

文章主要研究基础隔震技术对于钢-混凝土组合结构的影响,即在不增加结构竖向刚度的情况下,在结构的基础与上部结构之间设置隔震层,通过隔震支座的耗能使得地震波的能量被消耗,从而达到降低结构加速度的效果,而且由于上部结构和基础部分可以相对移动,增加了结构的自振周期,避免产生共振。通过振动台实验对比,验证了基础隔震对于钢-混凝土组合结构的有效性以及优越性。

In this paper, the effect of the base isolation technology on the steel-concrete composite structure is studied, which is, without increasing the vertical stiffness of the structure, the isolation layer is arranged between the foundation and the superstructure. As the energy of seismic wave is consumed by the isolation bearing, the effect of reducing the acceleration of the structure will be achieved. What＇s more, because the upper structure and the base part can be moved relatively, the structure of the natural vibration period is increased and the resonance is avoided. By comparison of shaking table test, the validity and superiority of base isolation for steel-concrete composite structure are verified.