Influence of Stiffness and Damping Parameters of Passive Seismic Control Devices in One-Sided Rocking of Masonry Walls

2022 ◽  
Vol 148 (2) ◽  
Author(s):  
L. Giresini ◽  
F. Taddei ◽  
F. Solarino ◽  
G. Mueller ◽  
P. Croce
Keyword(s):  
Masonry Walls ◽  
Seismic Control ◽  
Passive Seismic ◽  
Control Devices ◽  
Stiffness And Damping

scholarly journals PERFORMANCE EVALUATION OF WOOD FRAME STRUCTURE WITH SEISMIC CONTROL DEVICES USING VISCO-ELASTIC DAMPER BASED ON PSEUDO-DYNAMIC ANALYSIS

2012 ◽  
Vol 18 (38) ◽  
pp. 165-170
Author(s):  
Takuya AOKI ◽  
Masayuki NAGANO ◽  
Toshiaki SATO ◽  
Yuichi MASAKI ◽  
Michio IGUCHI
Keyword(s):  
Performance Evaluation ◽  
Dynamic Analysis ◽  
Frame Structure ◽  
Seismic Control ◽  
Control Devices ◽  
Wood Frame

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

scholarly journals Influence of Traveling Wave Effect on Passive Seismic Control of Long-Span Bridge

2011 ◽  
Vol 14 ◽  
pp. 2307-2314
Author(s):  
L.I. Zhengying ◽  
M.U. Dejian ◽  
Dang Pengpeng
Keyword(s):  
Traveling Wave ◽  
Wave Effect ◽  
Traveling Wave Effect ◽  
Seismic Control ◽  
Long Span ◽  
Long Span Bridge ◽  
Passive Seismic

scholarly journals Experimental estimation of energy dissipation in rocking masonry walls restrained by an innovative seismic dissipator (LICORD)

2021 ◽  
Author(s):  
Linda Giresini ◽  
Fabio Solarino ◽  
Francesca Taddei ◽  
Gerhard Mueller
Keyword(s):  
Coefficient Of Restitution ◽  
Masonry Walls ◽  
Free Standing ◽  
Equivalent Viscous Damping ◽  
Shock Absorbers ◽  
Out Of Plane ◽  
Rocking Motion ◽  
Vibration Tests ◽  
Stiffness And Damping ◽  
And Control

AbstractThis paper presents an innovative anti-seismic device for controlling the out-of-plane rocking motion of masonry walls with traditional tie-rods, called LInear COntrolled Rocking Device (LICORD). LICORD is a low-impact box connected to the extremity of the traditional tie-rod designed to mitigate rocking for medium–high intensity earthquakes. Additionally, the paper widens the knowledge about the dynamic behavior of rocking walls through the interpretation of the results of an extensive experimental campaign performed on masonry specimens composed by clay brick and cementitious mortar. Firstly, the LICORD’s single components are tested to identify their stiffness and damping properties. Secondly, free vibration tests provide actual values of coefficients of restitution on free-standing walls and walls restrained by LICORD, where the walls vary for the height to thickness ratio. For the stockier wall, the ratio of experimental/analytical coefficient of restitution varies from 88 to 98%, whereas for the slender wall, the results are less scattered, with a minimum value of 95% and a maximum value of 96%. The restrained walls are characterized by coefficients of restitution from 5 to 25% less than the values found for unrestrained walls, depending on the equivalent viscous coefficient of the shock absorbers. Moreover, LICORD demonstrated to properly absorb and damp the oscillations of the wall and control its rocking motion, strongly reducing the number of impacts and the rotation amplitudes up to 70%. Considerations about the effect of one-sided motion on the assessment of coefficient of restitution are also given. The equivalent viscous damping coefficients are observed to be on the range 4% (unrestrained wall) and 7–20% for walls restrained by LICORD.

scholarly journals Passive seismic control of landslides dislocations of Vorkuta city

2020 ◽  
Vol 1 ◽  
pp. 24-30
Author(s):  
V. A. Lutoev ◽  
Keyword(s):  
Seismic Control ◽  
Passive Seismic
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