网格屋盖结构柱顶隔震技术的参数分析

采用双线性模型模拟隔震垫,通过非线性有限元程序大量的数值分析,研究了隔震垫刚度、阻尼比对屋盖隔震结构减震效果的影响规律,认为在满足抗风、抗小震的前提下,隔震层刚度应尽可能地小;隔震垫阻尼比存在最优值,一般可取0.1~0.2。

Parametric study of roof-isolation in roof structure

The paper holds much numeric analysis with nonlinear finite element program, in which the bilinearity model is used to simulate the laminated rubber bearing with lead damper, to study the regularity that the stiffness and damper ratio of isolation bearing affect the isolation effect. The results indicate that the stiffness of isolation bearing should be weak as long as it can withstand strong wind and minor shock, and the damper ratio need to be optimized, generally 0. 1 - 0. 2 is its appropriate scope.