摘要
介绍了两种滚球隔震装置,并由此分别建立了这两种装置的计算模型和运动微分方程。对这两种隔震装置在简谐波和地震波作用下分别进行仿真分析,发现这两种装置都可消减地震动加速度向上部结构的传递,且具有自复位能力;只是弹簧复位装置在大震情况下滚球有滚出的可能,且定位不方便。对比分析的结果为以后进一步研究奠定基础,对工程实践具有指导意义。
Two rolling isolation equipments are introduced in this paper, computing models and dynamic equations of two isolation systems are established respectively. Two isolation structures that are acted on harmonic wave and earthquake are simulated and analyzed. The numerical results show that the accelerations of superstructures installed two isolation systems can be decreased, and the displacements of base are restricted by the springs and concave-board that can resume the structures to its primary locations. But if these spheres with the spring-device are subjected to destructive earthquake,it can roll out and its orientation is not convenient. Foundation is established for future farther study and engineering practice is guided by these analytical-contrast results.
出处
《工程抗震与加固改造》
2005年第3期46-50,共5页
Earthquake Resistant Engineering and Retrofitting
