A Data-Driven Smart Morphing Fa\xe7ade System Controller for Wind-Induced Vibration Mitigation in Tall Buildings

2021 ◽  
Author(s):  
Khalid Abdelaziz ◽  
Jared Hobeck
Keyword(s):  
Tall Buildings ◽  
Data Driven ◽  
Vibration Mitigation ◽  
Wind Induced Vibration ◽  
System Controller

Increasing Damping Ratios in a Tuned Liquid Damper Using Damping Bars

2007 ◽  
Vol 353-358 ◽  
pp. 2652-2655 ◽  
Author(s):  
Ki Pyo You ◽  
Young Moon Kim ◽  
Cheol Min Yang ◽  
Dong Pyo Hong
Keyword(s):  
Passive Control ◽  
Damping Ratio ◽  
Tall Buildings ◽  
Shaking Table ◽  
Water Tank ◽  
Tuned Liquid Damper ◽  
Structural Vibrations ◽  
Existing Structures ◽  
Long Time ◽  
Wind Induced Vibration

Wind-induced vibration of tall buildings have been of interest in engineering for a long time. Wind-induced vibration of a tall building can be most effectively controlled by using passive control devices. The tuned liquid damper(TLD) is kind of a passive mechanical damper, which relies on the sloshing liquid in a rigid tank. TLD has been successfully employed in practical mitigation of undesirable structural vibrations because it has several potential advantages: low costs, easy installation in existing structures, and effectiveness even against small-amplitude vibrations. Shaking table experiments were conducted to investigate the characteristics of the shallow water sloshing motion in a rectangular tank. To increase the damping ratio of the rectangular water tank, triangle sticks were installed at the bottom of water tank. This installation increased the damping ratio by amaximum of 40-70%.

INTEGRATED MULTIPLE TUNED MASS DAMPERS FOR TALL BUILDINGS

2014 ◽  
Vol 1 (1) ◽  
Author(s):  
Kyoung Sun Moon
Keyword(s):  
Tall Buildings ◽  
Axial Stiffness ◽  
Tuned Mass Dampers ◽  
Study Results ◽  
Effective Performance ◽  
Double Skin ◽  
Reliable Solution ◽  
Wind Induced Vibration ◽  
Double Skin Facades ◽  
Damping Systems

As tall buildings become taller and more slender, wind-induced vibration is a serious design issue. Installing auxiliary damping devices, such as tuned mass dampers (TMD), is a very reliable solution. TMDs are usually large and located near the top of tall buildings for their effective performance. As a result, very valuable occupiable space near the top of tall buildings is sacrificed to contain large TMDs, and installing TMD systems results in adding additional masses to tall buildings. In order to address these issues, more integrated TMD systems for tall buildings are studied. First, distributing multiple small TMDs to multiple upper floors of tall buildings is investigated. The study results suggest this can be done without substantial loss of the effectiveness of the system. Second, designing existing masses in tall buildings to provide damping mechanism is studied. An emphasis is placed on studying the potential of double skin façades (DSF) as an integrated damping system. For this, the connectors between the inner and outer skins of the DSF system are designed to have very low axial stiffness, and the outer skin masses of the DSF system is utilized as damping mass. Wind-induced vibration of tall building structure can be substantially reduced through this design. Finally, TMD/DSF interaction system is studied to synergistically enhance the performance of the TMD and DSF damping systems.

Optimal design of wind-induced vibration control of tall buildings and high-rise structures

1999 ◽  
Vol 2 (1) ◽  
pp. 69-83 ◽  
Author(s):  
Qiusheng Li ◽  
Hong Cao ◽  
Guiqing Li ◽  
Shujing Li ◽  
Dikai Liu
Keyword(s):  
Optimal Design ◽  
Vibration Control ◽  
Tall Buildings ◽  
High Rise ◽  
Wind Induced Vibration
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