Buy article PDF
The purchased file will be sent to you
via email after the payment is completed.
US$ 35
|
Smart Structures and Systems Volume 20, Number 1, July 2017 , pages 23-33 DOI: https://doi.org/10.12989/sss.2017.20.1.023 |
|
|
|
Sensitivity analysis of variable curvature friction pendulum isolator under near-fault ground motions |
||
Parisa Shahbazi and Touraj Taghikhany
|
||
| Abstract | ||
| Variable Curvature Friction Pendulum (VCFP) bearing is one of the alternatives to control excessive induced responses of isolated structures subjected to near-fault ground motions. The curvature of sliding surface in this isolator is varying with displacement and its function is non-spherical. Selecting the most appropriate function for the sliding surface depends on the design objectives and ground motion characteristics. To date, few polynomial functions have been experimentally tested for VCFP however it needs comprehensive parametric study to find out which one provides the most effective behavior. Herein, seismic performance of the isolated structure mounted on VCFP is investigated with two different polynomial functions of the sliding surface (Order 4 and 6). By variation of the constants in these functions through changing design parameters, 120 cases of isolators are evaluated and the most proper function is explored to minimize floor acceleration and/or isolator displacement under different hazard levels. Beside representing the desire sliding surface with adaptive behavior, it was shown that the polynomial function with order 6 has least possible floor acceleration under seven near-field ground motions in different levels. | ||
| Key Words | ||
| seismic isolation; variable curvature friction pendulum; sensitivity analysis; near-fault ground motion | ||
| Address | ||
| Parisa Shahbazi and Touraj Taghikhany: Department of Civil and Environmental Engineering, Amirkabir University of Technology (Tehran Polytechnic), Tehran, Iran | ||