Passive seismic control of cable-stayed bridges with damped resonant appendages

1995 ◽  
Vol 32 (6) ◽  
pp. A292
Keyword(s):  
Seismic Control ◽  
Passive Seismic ◽  
Cable Stayed Bridges

scholarly journals Design of hysteretic dampers with optimal ductility for the transverse seismic control of cable-stayed bridges

2017 ◽  
Vol 46 (11) ◽  
pp. 1811-1833 ◽  
Author(s):  
Alfredo Camara ◽  
Roberto Cristantielli ◽  
Miguel A. Astiz ◽  
Christian Málaga-Chuquitaype
Keyword(s):  
Seismic Control ◽  
Hysteretic Dampers ◽  
Cable Stayed Bridges

Shake Table Studies on Viscous Dampers in Seismic Control of a Single-Tower Cable-Stayed Bridge Model under Near-Field Ground Motions

2018 ◽  
Vol 12 (05) ◽  
pp. 1850011 ◽  
Author(s):  
Jiang Yi ◽  
Jianzhong Li ◽  
Zhongguo Guan
Keyword(s):  
Ground Motions ◽  
Near Field ◽  
Far Field ◽  
Viscous Damper ◽  
Viscous Dampers ◽  
Damping Force ◽  
Seismic Control ◽  
Cable Stayed Bridge ◽  
Bridge Model ◽  
Cable Stayed Bridges

To investigate the effectiveness of viscous damper on seismic control of single-tower cable-stayed bridges subjected to near-field ground motions, a 1/20-scale full cable-stayed bridge model was designed, constructed and tested on shake tables. A typical far-field ground motion and a near-field one were used to excite the bridge model from low to high intensity. The seismic responses of the bridge model with and without viscous dampers were analyzed and compared. Both numerical and test results revealed that viscous dampers are quite effective in controlling deck displacement of cable-stayed bridges subjected to near-field ground motions. However, due to near-field effects, viscous damper dissipated most energy through one large hysteresis loop, extensively increasing the deformation and damping force demand of the damper. Further study based on numerical analysis reveals that to optimize deck displacement of cable-stayed bridges during an earthquake, a viscous damper with relatively larger damping coefficient should be introduced under near-field ground motions than far-field ones.

ACTIVE/PASSIVE SEISMIC CONTROL OF STRUCTURES

2006 ◽  
Vol 10 (4) ◽  
pp. 509-526 ◽  
Author(s):  
SANG-JUN HAN ◽  
PANOS TSOPELAS ◽  
A. BAZ
Keyword(s):  
Seismic Control ◽  
Passive Seismic
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