|
|
|
| Analysis on energy response of base-isolated structures with friction pendulum system under multi-axial ground motions |
| Wang Jian-qiang1, Ding Yong-gang2, Li Da-wang3 |
| （1．School of Civil Engineering, Zhengzhou University, Zhengzhou 450001, China;2．School of Civil Engineering and Architecture, Henan University of Technology, Zhengzhou 450052, China;3．School of Civil Engineering, Shenzhen University, Shenzhen 518060, China） |
|
|
|
|
Abstract Abstract: The analysis on energy response of base-isolated structures with friction pendulum system is carried out, the influence of multi-axial ground motions, seismic intensity and bearing friction coefficient about the energy response is studied. When the bilateral horizontal ground motions are considered, the total input energy of the structure and the energy dissipation ratio of base-isolation system will increase, the potential energy dissipation ratio of the superstructure will decrease. When the vertical ground excitation is considered, the total input energy of the structure and the potential energy dissipation ratio of the superstructure will increase, the energy dissipation ratio of base-isolation system will decrease. As the seismic intensity increasing, the total input energy and the energy dissipation ratio of base-isolation system will increase, the potential energy dissipation ratio of the superstructure will decrease. As the friction coefficient of the FPS increasing, the total input energy and the potential energy dissipation ratio of the superstructure will increase, and the energy dissipation ratio of base-isolation system will decrease.
|
|
Received: 30 November 2009
|
|
|
|
|
|
|
2011, Vol. 30 
