LRB消能墙在高层框架结构中的应用与分析

Application and Analysis of LRB Energy Dissipation Wall in High-rise Frame Structure

为研究LRB消能墙设置在高层框架结构中的隔震、消能与减震的效果,采用有限元分析软件ETABS对LRB消能墙高层框架结构的实际工程进行三维结构模型建模,同时对相同规模的框架剪力墙结构进行三维结构模型建模,在2组实际强震地震波El-Centro波和Taft波以及1组人工波作用下,对上述2种结构形式的三维结构模型进行动力性能分析并作比较。结果表明,相对于传统的框架剪力墙结构,LRB消能墙高层框架结构的自振周期能有效延长,LRB消能墙高层框架结构的楼层加速度、楼层剪力最大值以及层间位移得到明显的降低,并使楼层加速度和层间位移变得平缓均匀,从而达到隔震、消能与减震的目的。

To studying the effect of seismic isolation, energy dissipation and damping of LRB energy dissipation wall in high-rise frame structure, the three-dimensional structure models of the actual engineering of LRB energy dissipation wall and the same scale of frame shear wall structure are established by using finite element analysis software ETABS program. In addition, under the influence of two actual strong seismic waves, E1-Centro wave and Taft wave, as well as a group of artificial wave, the dynamic performances of the two three-dimensional structure models are analyzed and compared. The results show that the vibration period of high-rise frame structure of LRB energy dissipation wall can be effectively prolonged compared with the traditional frame shear wall structure, the floor acceleration, maximum floor shear force as well as inter-story displacement of LRB energy dissipation wall in high-rise frame structure are significantly lowered, and it makes the floor acceleration and inter-story displacement become more smooth and uniform, so as to achieve the purpose of seismic isolation, energy dissipation and damping.