A generalized analytical model for sloped rolling-type seismic isolators

作者：Wang Shiang Jung; Yu Chung Han; Lin Wang Chuen; Hwang Jenn Shin; Chang Kuo Chun^*

来源：Engineering Structures, 2017, 138: 434-446.

DOI：10.1016/j.engstruct.2016.12.027

• Sloped rolling-type seismic isolator
• Generalized analytical model
• Equipment
• Seismic performance
• Vertical excitation

The exact and simplified generalized analytical models for the sloped rolling-type seismic isolator in which two V-shaped surfaces in contact with cylindrical rollers are designed with arbitrary sloping angles are proposed. Numerical predictions are compared with horizontal seismic simulation test results to demonstrate the accuracy and practicability of the proposed simplified model. Furthermore, the influences arising from two simplification assumptions on the horizontal acceleration prediction are numerically examined. The results indicate that the effect of vertical acceleration excitation plays a more crucial role in prediction accuracy and conservative design compared to that of higher order terms of sloping angles.

• 出版日期2017-5-1