Performance experiment for viscous shear damper

In the paper,the mechanics characteristic of the viscous dampers is analyzed,and the advantage for seismic design is presented.To examine the effect of the dampers used in bridges,and to provide design reference to dampers with large displacement,the performance of the dampers is tested based on the design parameter of dampers used in some cable-stayed bridges in China.By statistic analysis of experiment results,the applicable range of the related formula obtained by performance tests with small distortion is put forward.It is considered that the suitable clearance between the planks is needed to meet the large distortion of the dampers.The conclusion can be used as reference to the design and further research of the viscous shear dampers.