Vibration control for torsionally irregular buildings by integrated control system

Akyürek, Osman; Suksawang, Nakin; Go, Tiauw Hiong

doi:10.1016/j.engstruct.2019.109775

Cited by 14 publications

(8 citation statements)

References 34 publications

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“…Figure 1. A demonstration of civil structure with its torsional response: (a) elevation and (b) bird's eye view [11] A lot of modern control systems have been introduced into the literature in the last two decades to keep the structures secure when earthquakes excite them. The most widely preferred and used passive control systems by engineers and designers is a tuned mass damper (TMD) comprised of additional appropriate mass, damping, and stiffness to the primary system, excluding any external power supply [12].…”

Section: (A) (B)mentioning

confidence: 99%

Analysis of different cross-frame placements to enhance torsional irregular buildings against structural failure under earthquake bidirectional loadings: A case study

Akyürek

2021

Bitlis Eren Üniversitesi Fen Bilimleri Dergisi

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Cross bracing frames (CFs) are employed as traditional passive energy dissipating devices, which are placed into the moment-resisting frames of the Benchmark building picked for analysis purposes. These devices are widely used, easy to construct, and inexpensive to contribute better seismic protection for existing and new buildings than complex control systems like active/passive Tuned Mass Dampers (TMDs) and so on. Therefore, in this research, the best three-predetermined CFs placements are selected. The time history analyses are made under bi-directional seismic loads such as two orthogonal excitations of El Centro in 1940, North-Ridge in 1994, and Kocaeli, Turkey in 1999. In conclusion, obtained results find out that while CFs placements into the structure can be significantly eliminating the eccentricity in the structure plan by dissipating especially torsional responses (approximately between 30% and 50% decrease) with a right engineering design perspective like Case 3, they cannot be successful enough to reduce the torsional responses without the right design vision such as Case 1 and Case 2. Therefore, Integrating CFs placements to the structure for minimizing the structural response is not always comprehensive to make the structure durability against torsional irregularity unless placed with the right engineering decision.

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Section: (A) (B)mentioning

confidence: 99%

Analysis of different cross-frame placements to enhance torsional irregular buildings against structural failure under earthquake bidirectional loadings: A case study

Akyürek

2021

Bitlis Eren Üniversitesi Fen Bilimleri Dergisi

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“…Therefore, it has only a little or no effect in controlling the torsional response from this angle of design perspective. For diminishing this limitation, the ICS was proposed as an effective control system in both the torsional and lateral directions in the study by Akyürek, Suksawang, and Hiong (2019).…”

Section: Active Integrated Control Systemmentioning

confidence: 99%

Vibration control by active integrated control system under bidirectional ground motions

Akyürek

Suksawang

2020

Advances in Structural Engineering

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To improve the safety and security of the structures with irregular plan configuration, the new torsionally effective passive control system (ICS) was first proposed by the author, which utilizes a new design configuration to dissipate the unwanted energy from the structures in the lateral and torsional directions. In this research, a new active structural control approach, which is the active form of the ICS (or active integrated control system, AICS), is introduced as an alternative active control system, especially for the buildings with torsional sensitivity. In the design of active system configurations, two actuators driven by the linear quadratic regulator (LQR) are implemented and used to apply the optimum control forces to the ATMDs and AICS. For examining the performance of the proposed system configuration, the ﬁnal design is applied to the 9-story Benchmark steel structure subjected to bidirectional three historical earthquakes. The obtained results show the overall performance of structural performance by using the AICS is substantially improved as compared to conventional ones (ATMDs) under selected ground accelerations with a 3% to 6% improvement in the lateral directions and by nearly 20% in the torsional direction in terms of the peak and root mean square response reduction.

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“…Identificadas las estructuras irregulares, se evalúa el uso de TMDs con el uso de parámetros óptimos del dispositivo como la frecuencia de sintonización ( ) y la relación de amortiguamiento ( ) que dependen de la relación de masa del dispositivo con la estructura (μ) de acuerdo con [6] ] -------------------(3)…”

Section: Metodologíaunclassified

“…De este modo, en el control de las vibraciones torsionales se involucran distintas variables [6] y [7] que representan el comportamiento de la estructura irregular. Una de ellas es la relación de la participación de la masa en rotación (RZ) entre la participación de masa predominante en traslación (Ux & Uy), siendo fundamental en caso sea mayor o igual en 30% [8].…”

Section: Introductionunclassified

Influencia de la Distribución de TMDS en la Respuesta Sísmica de Estructuras Irregulares de Concreto Armado

Rosas¹,

Cerron²,

Sanchez³

2020

Proceedings of the 18th LACCEI International Multi-Conference for Engineering, Education, and Technology: Engineering, Integrat

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This paper analyzes the control of the seismic response of asymmetric buildings, through the incorporation of Tuned Mass Damper (TMD), evaluating different distributions of these devices on the top floor to obtain an alternative to improve the response of the structure in order to control the torsional effects of the first two mode of vibrating due to irregularities in the plant. The previous one is done using a finite element computational model where the main variable is the participatory mass of the torsional mode, this being the first way to vibrate and a reduction of up to 40% of that variable was obtained.

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Vibration control for torsionally irregular buildings by integrated control system

Cited by 14 publications

References 34 publications

Analysis of different cross-frame placements to enhance torsional irregular buildings against structural failure under earthquake bidirectional loadings: A case study

Analysis of different cross-frame placements to enhance torsional irregular buildings against structural failure under earthquake bidirectional loadings: A case study

Vibration control by active integrated control system under bidirectional ground motions

Influencia de la Distribución de TMDS en la Respuesta Sísmica de Estructuras Irregulares de Concreto Armado

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