STUs in conjunction with other seismic-protection devices

2013 ◽  
pp. 181-196
Keyword(s):  
Seismic Protection ◽  
Protection Devices

scholarly journals Comparison of Novel Seismic Protection Devices to Attenuate the Earthquake Induced Energy

Actuators ◽  
2021 ◽  
Vol 10 (4) ◽  
pp. 73
Author(s):  
Osman Hansu ◽  
Esra Mete Güneyisi
Keyword(s):  
Lateral Displacement ◽  
Time History ◽  
Seismic Protection ◽  
Base Shear ◽  
Seismic Demands ◽  
Nonlinear Time History Analyses ◽  
History Of ◽  
Protection Devices ◽  
Nonlinear Time History ◽  
Better Than

This study addresses an alternative use of viscous dampers (VDs) associated with buckling restrained braces (BRBs) as innovative seismic protection devices. For this purpose, 4-, 8- and 12-story steel bare frames were designed with 6.5 m equal span length and 4 m story height. Thereafter, they were seismically improved by mounting the VDs and BRBs in three patterns, namely outer bays, inner bays, and all bays over the frame heights. The structures were modeled using SAP 2000 software and evaluated by the nonlinear time history analyses subjected to the six natural ground motions. The seismic responses of the structures were investigated for the lateral displacement, interstory drift, absolute acceleration, maximum base shear, and time history of roof displacement. The results clearly indicated that the VDs and BRBs reduced seismic demands significantly compared to the bare frame. Moreover, the all-bay pattern performed better than the others.

scholarly journals Seismic behavior of chilean bridges with seismic protection devices

2015 ◽  
Vol 14 (1) ◽  
pp. 53-59 ◽  
Author(s):  
María O Moroni ◽  
Mauricio Sarrazin ◽  
Braian Venegas ◽  
Jorge Villarroel
Keyword(s):  
Seismic Behavior ◽  
Seismic Protection ◽  
Protection Devices

Effectiveness Evaluation of Seismic Protection Devices for Bridges in the PBEE Framework

2014 ◽  
Author(s):  
Paolo Emidio Sebastiani ◽  
Jamie E. Padgett ◽  
Francesco Petrini ◽  
Franco Bontempi
Keyword(s):  
Seismic Protection ◽  
Effectiveness Evaluation ◽  
Protection Devices

Energy Properties of Building Structures Subjected to Strong Earthquake

2010 ◽  
Vol 150-151 ◽  
pp. 1570-1573
Author(s):  
Jin Zheng ◽  
Bo Chen ◽  
Chun Yang Ye
Keyword(s):  
Mechanical Model ◽  
Evaluation Criteria ◽  
Seismic Protection ◽  
Earthquake Response ◽  
Building Structures ◽  
Energy Characteristics ◽  
Friction Dampers ◽  
Energy Evaluation ◽  
Protection Devices ◽  
Story Building

The evaluation on energy characteristics of earthquake-excited building structures with seismic protection devices is actively carried out in this study. The mechanical model of passive friction dampers is first introduced and the dynamic model of building-damper system is proposed. The evaluation criteria of energy responses are developed and applied to the earthquake response mitigation of a real multi-story building incorporated with friction dampers. The observations indicate that the earthquake-induced vibration of the structure can be substantially suppressed and the proposed energy evaluation criteria can be effectively utilized in the examination on seismic mitigation performance.

scholarly journals Calculation of seismic qualities of the damper and vibration transducer with the possibility of their use in aircraft

2019 ◽  
Vol 15 (5) ◽  
pp. 392-398
Author(s):  
Inomzhon U. Madzhidov ◽  
Malika B. Aripkhodzhaeva ◽  
Dilnoza M. Rakhmatova ◽  
Adiljan A. Suleymanov
Keyword(s):  
Seismic Protection ◽  
Seismic Load ◽  
Seismic Loads ◽  
Urgent Problem ◽  
Comparative Calculation ◽  
Vibration Transducer ◽  
Seismic Force ◽  
Protection Devices ◽  
Total Shear

The aim of the work. The article aims to determine the most effective seismic protection devices, as well as their degree of reliability in different conditions. The method of comparative calculation for determining the quality of seismic protection devices is given. An example of calculation for the damper and vibration transducer is carried out. Calculations show that the use of seismic protection devices reduces the coefficient of K 3 more than twice. Seismic protection is an urgent problem not only in construction, but also in all branches of the technosphere. The option of using seismic protection devices in aircraft is also considered. Methods. A comparative calculation of the behavior of dampers and vibration transducer taking into account the friction coefficients f tr, the sum of vertical loads ∑ Qkd , the total shear seismic force ∑ Sdc is considered. The diagram of the location of seismic protection devices (damper and vibration transducer) under the building is presented, as well as the options for installation in aircraft are given. Comparative calculations are carried out with the presence of seismic protection installations and without them. Results. The total result is given taking into account the change in the value of horizontal seismic loads Sik , which has changed in the range of 2.26-2.46 times. This circumstance allows to conclude that the proposed damping device reduces the seismic load, which falls on the protected structure, by 1-2 points, with almost the same efficiency as the vibration transducers (difference of 0.3 times).

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