SEISMIC RESPONSE CONTROL OF SUPER HIGH-RISE RC BUILDINGS UTILIZING BUCKLING RESTRAINED BRACES

2015 ◽  
Vol 2 (1) ◽  
Author(s):  
Yusuke Maida ◽  
Toshio Maegawa ◽  
Toshihiko Demizu ◽  
Makoto Hamada ◽  
Zhe Qu ◽  
...  
Keyword(s):  
Seismic Response ◽  
Reference Model ◽  
Time History ◽  
Frame Structure ◽  
Nonlinear Time History Analysis ◽  
Rc Beams ◽  
Rc Buildings ◽  
Response Control ◽  
Seismic Response Control ◽  
High Rise

In this paper, the seismic response control of BRBs in super high-rise RC buildings subjected to earthquake ground motions is investigated by nonlinear time history analysis. The analysis model is a 36 stories super high-rise RC building. A bare frame structure is used as a reference model. The parameter of the analysis was the configuration of the BRBs. Two kinds of seismic response controlled building models were examined. In one model, the RC frame was braced by BRBs in each story (each model) and in the other one, each BRB spanned over two stories (over model). The RC beams in the braced span of the over model were abandoned. By comparing the maximum story drift ratio of the reference model with the braced ones, the seismic response control was confirmed for both the each model and the over model. In addition, the over model exhibited almost the same seismic response control as compared to the each model, although the number of BRBs was significantly reduced and the RC beams in the braced span were abandoned.

TREND OF SEISMIC RESPONSES OF EXISTING HIGH-RISE RC BUILDINGS

2021 ◽  
Vol 8 (1) ◽  
Author(s):  
Yusuke Maida ◽  
Tomofusa Akita ◽  
Nobuyuki Izumi
Keyword(s):  
Seismic Response ◽  
Ground Motion ◽  
Seismic Isolation ◽  
Rc Buildings ◽  
Response Control ◽  
Control Structures ◽  
Seismic Ground Motion ◽  
Seismic Response Control ◽  
High Rise ◽  
Seismic Resistant

This report presents studies on the seismic response of high-rise RC buildings in Japan. Data concerning the seismic response of approximately 600 high-rise RC buildings constructed from 1972 to 2015 were collected. Seismic response characteristics were analyzed by focusing on differences in seismic resistant structures, seismic response control structures, and seismic isolation structures. The results indicated that the maximum story drift ratio response under the level 1 study seismic ground motion (R) and the level 2 study seismic ground motion (R) criteria is smaller for seismic isolation structures than that of the seismic resistant structure and seismic response control structures. In addition, focusing on the R-R relationship, the correlation is low in the seismic resistant and seismic response control structures, but is almost linear in the seismic isolation structure. This is because the seismic isolation structure is designed such that the superstructure does not become plastic even with level 2 seismic ground motion.

Seismic Response Control for Four High-Rise Building Structures Using Connected Control Method

2007 ◽  
Author(s):  
Kazuto Seto ◽  
Chinori Iio ◽  
Shigeru Inaba ◽  
Shingo Mitani ◽  
Fadi Dohnal ◽  
...  
Keyword(s):  
Seismic Response ◽  
Active Control ◽  
Control Method ◽  
Control Force ◽  
Building Structures ◽  
Response Control ◽  
Control Approach ◽  
Seismic Response Control ◽  
High Rise ◽  
Lq Control

This paper presents a vibration control method for multiple high-rise buildings against large earthquake motion. This method is called as “Connected Control Method (CCM)” and has the merit of obtaining enough control force to protect high-rise buildings from large earthquakes using passive and semiactive devices. In this paper, first a modeling approach for four scaled building structures is shown and effectiveness of the CCM using LQ control approach for them is demonstrated by seismic response control results. Next, in order to reduce the supplied power, a semi-active control approach in place of active control is applied for the CCM. For this purpose, a new MR damper is developed and designed to have a close performance with results of the LQ control. This performance is verified by measured frequency responses.

Study on Seismic Response and Shock Absorption for High-Rise Reinforced Concrete Frame Structure

2011 ◽  
Vol 90-93 ◽  
pp. 3214-3217
Author(s):  
Xiang Chao Yin ◽  
Zhe Sun ◽  
Xue Ling Li
Keyword(s):  
Reinforced Concrete ◽  
Seismic Response ◽  
Time History ◽  
Frame Structure ◽  
Response Analysis ◽  
Reinforced Concrete Frame ◽  
Concrete Frame ◽  
High Rise ◽  
Damping Effect ◽  
Reinforced Concrete Frame Structure

This article mainly studied the seismic response of high-rise RC frame and the damping effect with viscoelastic damper. Taking a reinforced concrete frame structure of 12 layers as the research object, six schemes of damper installed were designed and the dynamic characteristics of these schemes were analyzed. The time history response analysis of 3D Tianjin waves was studied for the six schemes under frequent earthquake. The results show that seismic capacity of the structure could be significantly enhanced with dampers under frequent earthquake. Meanwhile, different damper installations also can make the structures have different damping effect.

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