Analysis on Seismic Behavior of Irregular High-Rise RC Structure Using Eccentrically Braces

2011 ◽  
Vol 243-249 ◽  
pp. 4001-4004
Author(s):  
Shi Qun Guo
Keyword(s):  
Seismic Response ◽  
Torsional Vibration ◽  
Seismic Behavior ◽  
Seismic Analysis ◽  
Relative Displacement ◽  
Vibration Response ◽  
The Self ◽  
High Rise ◽  
High Rise Building ◽  
Rc Structure

An anti-seismic analysis about two structures (an irregular high-rise building and the previous structure using eccentrically braces) is performed to study their torsional vibration response in earthquake. The self-vibration character and relative displacement between different floors are compared. It is found that adding some eccentrically braces properly can reduce the response of torsional vibration and other seismic response of the structures efficiently. From the example mentioned in the paper, it is verified that this method is a simple and economical one.

Shake Table Test of Complex High-Rise Building Equipped with Torsional Vibration Control Device

2012 ◽  
Vol 446-449 ◽  
pp. 3889-3893
Author(s):  
Bin Zhao ◽  
Juan He ◽  
Hui Gao ◽  
Xu Gang Chen
Keyword(s):  
Vibration Control ◽  
Torsional Vibration ◽  
Shake Table Test ◽  
Scale Model ◽  
Shake Table ◽  
Test Results ◽  
Torsional Mode ◽  
High Rise ◽  
High Rise Building ◽  
Local Space

For many high-rising buildings, large local space is very useful for its special function needs, such as conference hall and hotel lobby. The shake table test results of a high-rising building with large local space show that the dynamic characteristics of such structure are complex and the torsional mode becomes the first mode, while the torsional responses under earthquake excitation, especially of the floor just above the large local space, are very remarkable. In this paper, the bidirectional Tuned Mass Damper (TMD) is employed for reducing the torsional vibration of such complex high-rise building structure. A reduced-scale model is design and constructed. A series of shake table tests are carried out and the test results indicate that the TMD system is very effective in torsional vibration control of structural system.

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