Seismic performance of controlled spine frames with energy-dissipating members

Takeuchi, Tōru; Chen, X.; Matsui, Ryota

doi:10.1016/j.jcsr.2015.07.002

Cited by 72 publications

(38 citation statements)

References 14 publications

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“…It was determined that the seismic resistance (rotational inertia) increased in a square relationship with an increase in the plane size R ( R denotes the radial distance from the centre of gravity and one rotation corner at the bottom of the structure in a plane), whereas the seismic demand (the overturning moment) increased linearly with the plane size R. Therefore, as long as a high‐rise structure's plane size R was large enough, the structure could theoretically survive any earthquake and remain stable. In addition to reducing the seismic response by eliminating the connection between the superstructure and foundation, some scholars have proposed using the failure of the soil to form the rocking structure, and the impacts of the soil–foundation interaction on the seismic response characteristics of the rocking structure have been studied …”

Section: Introductionmentioning

confidence: 99%

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Seismic performance of high‐rise building with a rock‐slip isolation system with cables

Zhang

Yin

Chen

et al. 2020

Structural Design Tall Build

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To avoid the overturning hazard of high-rise buildings with traditional isolation technology, a rock-slip structure with cables (RSSC) was proposed to improve their seismic performance. The mechanical model was established, and the motion behaviour equation of the RSSC was derived. Shake-table tests of the RSSC were performed, and the results were compared with the corresponding finite-element model simulations. The influences of key structural parameters and earthquake motion characteristics were analysed. The study results showed that the RSSC could effectively reduce the internal seismic force response and interlayer deformation under a severe earthquake, as well as decrease the overturning probability. The seismic reduction effect was influenced by the prestressed force, the aspect ratio of the structure, and the friction coefficient between the superstructure and foundation as well as seismic site type. The motion equation derived in this paper can be used to theoretically predict the motion behaviour of RSSC. K E Y W O R D Sdynamic response, high-rise building, rock-slip, seismic isolation, seismic reduction rate, shaketable test | INTRODUCTIONWith the deepening cognition of the nature of earthquake disasters, structural seismic design has evolved from the initial simple seismic resistant designs to seismic ductility designs and isolation designs. By appropriately prolonging the structure's natural vibration period to avoid sitepredominant periods, increasing damping to dissipate seismic energy, and isolating ground motion, the seismic response of the structure may be reduced. The technology of seismic isolation has been widely applied and popularized due to its good seismic reduction effect and the convenience of repair after a disaster. For middle-and low-rise structures, the installation of rubber bearings and tuned mass dampers can effectively reduce the seismic response, [1][2][3] but studies by Itoh and Gu [4] and Liu et al. [5] have also shown that the performance of rubber bearings are significantly affected by temperature changes. Additionally, for high-rise structures, [6][7][8] rubber bearings will lose function in instances of severe earthquakes, specifically when the height-width ratio is over a certain value (which is affected by the site type and earthquake degree). [9] Moreover, the entire inclination angle of a high-rise structure increases, and its integral anti-overturning performance decreases, with an increase in the height-width ratio after isolation, which can easily cause overturning, endangering adjacent buildings. [10,11] Therefore, the application of traditional seismic isolation technology in high-rise structures is not ideal. A new isolation system needs to be proposed with the development of highrise buildings, which could not only reduce the earthquake response but also effectively reduce the possibility of overturning, and easy to repair after an earthquake.Research into rocking structures can be traced back to the 19th century. [12] Subsequently, Housner [13] found that for ...

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Section: Introductionmentioning

confidence: 99%

“…For the problem of a traditional rocking structure exhibiting great unpredictability in the seismic response process, many scholars have proposed effective measures to control them . Ma et al and Eatherton and Hajjar used replaceable fuses to consume seismic energy for improved safety and economic benefits.…”

Section: Introductionmentioning

confidence: 99%

Seismic performance of high‐rise building with a rock‐slip isolation system with cables

Zhang

Yin

Chen

et al. 2020

Structural Design Tall Build

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“…e experimental results showed that spine systems can effectively reduce the concentration of deformations. Takeuchi et al [22] proposed a nonuplifting spine frame system with two replaceable BRBs at the bases of the frames to concentrate the major damage into the BRBs and prevent structural collapse. Chen et al [23] designed a tall steel-braced frame with segmental elastic trussed spines and a uniform story drift response can be found in this newly proposed system.…”

Section: Introductionmentioning

confidence: 99%

Damage Concentration Effect of Multistory Buckling‐Restrained Braced Frames

Wang

Feng

et al. 2019

Advances in Civil Engineering

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Due to the low postyield stiffness of buckling-restrained braces (BRBs), multistory buckling-restrained braced frames (BRBFs) subjected to earthquakes are prone to lateral deformations and damage concentrations at certain stories, which is deemed a damage concentration effect (DCE). A series of nonlinear pushover analyses and response history analyses are conducted to investigate the key factors affecting the DCE of BRBFs. Two comparisons of the DCE are performed for different types of structures and different beam-to-column connections in the main frame (MF). These comparisons show that BRBFs equipped with BRBs as the main earthquake resistance system have a more serious DCE than the traditional moment-resisting frame or conventional braced frame and that the MF stiffness significantly affects the structural residual displacement and DCE. Then, parametric analyses are performed to investigate the influence of two stiffness distribution parameters (in the horizontal and vertical directions) on the DCE of a 6-story BRBF dual system designed according to the Chinese seismic code. The results show that increasing the MF stiffness and avoiding abrupt changes in the BRB stiffness between stories can effectively mitigate the DCE of BRBFs. Finally, the correlations between various damage performance indices are analyzed. A low statistical correlation between the peak and residual drift responses can be observed in BRBFs. Therefore, it is recommended that the DCE be considered in BRBF design.

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“…(B. A new controlled spine frame was proposed by the authors (T. Takeuchi et al 2015;X. Chen et al 2017), as shown in Fig.…”

Section: Introductionmentioning

confidence: 99%

Seismic Performance and Evaluation of Controlled Spine Frames Applied in High-rise Buildings

2018

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A controlled spine frame system consists of moment frames and spine frames with concentrated energy-dissipating members. This system guarantees the continuous usability of buildings against Japanese Level-2 earthquake events (similar to DBE events in California), and the authors have confirmed its excellent performance in preventing damage concentration in low-rise buildings. This study further investigates the effect of diverse structural properties on the seismic performance of controlled spine frames applied in high-rise buildings. The effect of building height, yield drift of dampers, spine-to-moment frame stiffness ratio, and damper-to-moment frame stiffness ratio are illustrated in detail, and optimal values are discussed. Also, a segmented spine frame system is proposed for high-rise buildings. The simple evaluation procedure proposed by the authors for low-rise buildings, based on equivalent linearization techniques and response spectrum analyses, was modified to include higher-mode effects for high-rise buildings based on modal analysis. The modified evaluation method was verified by modal pushover and time-history analyses.

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Seismic performance of controlled spine frames with energy-dissipating members

Cited by 72 publications

References 14 publications

Seismic performance of high‐rise building with a rock‐slip isolation system with cables

Seismic performance of high‐rise building with a rock‐slip isolation system with cables

Damage Concentration Effect of Multistory Buckling‐Restrained Braced Frames

Seismic Performance and Evaluation of Controlled Spine Frames Applied in High-rise Buildings

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