橡胶垫减震结构的动力反应

对多层框架橡胶垫减震结构在弹塑性范围内进行了地震反应的动力分析,详细介绍了进行动力分析的方法和结构的动力特性,计算了结构在地震波作用下各层的位移、加速度和剪力等地震反应·从与抗震结构动力反应比较可见,减震结构采用橡胶隔震垫后,改善了上部结构的动力特性,地震反应明显小于通常的抗震结构；此外,不同的场地对建筑物减震的效果有所不同,在Ⅰ、Ⅱ、Ⅲ类场地下,减震结构同抗震结构相比有二度以上的减震效果；在弹塑性范围内对结构进行动力分析比只在弹性范围内分析,能够更准确地反映实际情况,从而提供较为准确的设计依据·

Dynamic Response of Isolation Structure Using Rubber Bearing

The dynamic analysis of earthquake response of multistory frame base isolation structure using rubber bearing was described in elastic plastic range. The dynamic analysis modelling and dynamic characteristics of the base isolation building were described in details. The displacement,acceleration and shear response of each floor were calculated under earthquake wave. Comparing the results of the isolating structure with the conventional anti seismic structure,it can be seen that dynamic characteristics of the isolating structure is much improved and earthquake response is decreased obviously. The isolating effect is different at different kind of grounds. However,the effect in isolating structure is two the degrees higher than in the anti seismic one at all the first,second and third kinds of grounds. The dynamic analysis in elastic plastic range is more accurate to reflect the real condition than in only elastic range. The analysis can provide accurately the reference basis for construction design.