Experimental Study on Spring Deformation of Vibration Isolation Turbine-generator Foundation under Horizontal Earthquake

摘要

The pseudo-dynamic test was conducted on the turbine-generator spring vibration isolation foundation to study the spring deformation under action of horizontal earthquake. The test model is 1:8 according to the similarity relation conversion. By experimental results, the story drift of spring vibration vibrating foundation is under the limit value provided in Code for seismic design of buildings. With the existing of spring vibration isolation, the foundation has good performance in the horizontal earthquake. The displacements of columns are no longer equal because of the spring vibration isolation. The earthquake force is redistributed to the columns so that each one can fully play its role.