LRB在框架结构教学楼中的应用实例与分析

Application Example and Analysis of LRB in the Framework of Classroom-buildings

通过工程实例介绍了LRB设置在地下一层框架柱顶处的隔震技术,并采用有限元分析软件ETABS进行三维结构模型建模与非线性分析。结果表明,采用LRB在地下一层框架柱顶进行隔震,能有效延长结构的自振周期,明显降低结构楼层加速度、楼层剪力最大值以及层间位移,并使楼层加速度和层间位移变得平缓均匀,从而达到防震减震目的。

The technique of LRB settings in the ground-floor of the frame column isolation is introduced by engineering examples. Three-dimensional structure model is established by finite element analysis software ETABS,and nonlinear analysis is conducted. The results show that,using LRB isolation technique in the basement of frame column can effectively prolong the structure ＇s natural period and obviously reduce the structural-floor ＇s acceleration,floor shear as well as maximum inter-story displacement; and can make the floor acceleration and displacement between floors become more stable and uniform to achieve the purpose of seismic shock.