Research summary on long‐span connected tall building structure with viscous dampers

Chen, Xuewei; Han, Xiao-Lei

doi:10.1002/tal.582

Cited by 13 publications

(6 citation statements)

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“…Hwasung et al [6] studied seismic response of dynamically similar adjacent structures connected with viscous dampers. Chen and Han [7] carried out a series of research on a long-span connected tall building structure with viscous dampers, which included inelastic dynamic time-history analysis under rare earthquake, shaking table test, and the control effects of vicious dampers.…”

Section: Introductionmentioning

confidence: 99%

Seismic Performance Analysis of a Connected Multitower Structure with FPS and Viscous Damper

Wang

Zhou

2018

Shock and Vibration

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A high four-tower structure is interconnected with a long sky corridor bridge on the top floor. To reduce the earthquake responses and member forces of the towers and sky corridor bridge, a passive control strategy with a friction pendulum tuned mass damper (FPTMD) was adopted. The sky corridor bridge was as the mass of FPTMD. The connection between the towers and the sky corridor bridge was designed as flexible links, where friction pendulum bearings (FPBs) and viscous dampers were installed. Elastoplastic time-history analysis was conducted by using Perform-3D model to look into its seismic behavior under intensive seismic excitation. The optimal design of the FPTMD with varying friction coefficients and radius of friction pendulum bearing (FPB) under seismic excitations was carried out, and the seismic behavior of the structure was also investigated at the same time.Results show that, for this four-tower connected structure, the friction pendulum tuned mass damper (FPTMD) has very well effect on seismic reduction. The structure can meet the seismic resistance design requirements.

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Section: Introductionmentioning

confidence: 99%

Seismic Performance Analysis of a Connected Multitower Structure with FPS and Viscous Damper

Wang

Zhou

2018

Shock and Vibration

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“…A larger part of the available research works has been on the former (damper) systems. In such studies, it has been meant to determine suitable properties and appropriate locations of viscous or friction dampers for an optimized response control under different ground motions, such as references [Bhaskararao and Jangid and 2007, Ok et al , Chen and Han , Ge et al , Patel and Jangid 2010a,b,c, Bakeri , Quinonero et al , Patel and Jangid ].…”

Section: Introductionmentioning

confidence: 99%

A method for rapid estimation of dynamic coupling and spectral responses of connected adjacent structures

Behnamfar

Dorafshan

Taheri

et al. 2015

Structural Design Tall Build

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A simple method is presented for estimation of dynamic coupling and maximum seismic responses of structures connected through links. The purpose is preparing a simple measure for distinguishing the cases where two connected structures interfere in the response of each individual structure and incorporating such cases in spectral analysis. First, each structure is analysed independently, and the natural modes with considerable interference with the other structure are identified. Then the spectral responses corresponding to such modes are modified in modal space. It is shown that the proposed method can estimate the spectral responses of adjacent systems with good accuracy.On the main diagonal, mk = 1 and no interaction exists. 614 F. BEHNAMFAR ET AL.dynamic response considerably, and second, they can be analysed separately at a preliminary design stage including the effect of the adjacent system if needed. Therefore, this method can reduce the time of the whole design process of such systems considerably. The splitting method was derived for two SDF systems and then was extended to two MDF systems connected at any level. The results of spectral analyses of the sample systems illustrated good accuracy in estimation of the maximum lateral displacements of each connected structure when analysed separately. AUTHORS' BIOGRAPHIESFarhad Behnamfar is a faculty member at the Isfahan University of Technology, Iran, from 2003.

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“…These methods are commonly adopted in the design of low to medium rise buildings. For very tall building structures, the huge amount of energy induced by earthquake can in addition be dissipated by installing dampers (Matsagar and Jangid 2005;Lewandowski and Grzymislawska 2009;Chen and Han 2010) and adopting base isolation (Takewaki and Fujita 2009).…”

Section: Introductionmentioning

confidence: 99%

Limited Deformability Design of High-Strength Concrete Beams in Low to Moderate Seismicity Regions / Stipriojo Betono Sijų Ribinio Deformatyvumo Skaičiavimas Žemo Ir Vidutinio Seismingumo Regionuose

Zhou

2011

Journal of Civil Engineering and Management

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In the design of reinforced concrete (RC) beams located in low-moderate seismicity regions, adequate flexural deformability apart from flexural strength to cater for the imposed seismic demand should be designed. As per the existing RC design codes, this is achieved by restricting the maximum neutral axis depth or tension steel ratio, or limiting the minimum confining steel. However, these deemed-to-satisfy rules were derived many years ago based on normal-strength concrete and steel, which would impair the deformability when applied directly to RC beams made of high-strength materials. To resolve the problem, a new design method based on a prescribed deformability is advocated. In this study, the authors proposed that instead of complying with the deemed-to-satisfy rules, a consistent deformability derived based on the design requirements of Eurocode 2 should be provided to all RC beams located in low-moderate seismicity regions. Using the theoretical formulas developed previously by the authors, two different sets of design values expressed in terms of maximum tension steel ratio and neutral axis to beam effective depths for different concrete and steel yield strengths are evaluated. Finally, simplified guidelines for designing RC beams satisfying the proposed deformability requirement are developed for practical design application. Santrauka Mažo ir vidutinio seismingumo regionuose projektuojant seisminių apkrovų veikiamas gelžbetonines sijas turi būti užtikrinta ne tik jų laikomoji galia, bet ir tinkamas deformatyvumas. Pagal šiuo metu galiojančias gelžbetoninių konstrukcijų projektavimo normas tai pasiekiama ribojant didžiausiąjį skerspjūvio aukštį, tempiamosios zonos armavimo procentą arba ribojant mažiausią armatūros kiekį. Tačiau šios konstravimo taisyklės buvo sukurtos prieš daugelį metų ir skirtos elementams iš normalaus stiprio betono ir armatūros. Jas tiesiogiai taikant gelžbetoninėms sijoms, pagamintoms iš stipriųjų medžiagų, gaunamas sumažintos deformacijos. Šiais problemai spręsti siūlomas naujas projektavimo metodas, paremtas nustatytu deformatyvumu. Autoriai siūlo mažo ir vidutinio seismingumo regionuose visas gelžbetonines sijas projektuoti pasirenkant deformacijas pagal ”Eurokode 2“ pateiktus deformatyvumo reikalavimus. Pagal anksčiau autorių gautas teorines formules skirtingiems betono ir plieno stipriams pateiktos dvi atskiros skaičiuojamųjų rodiklių grupės išreikštos maksimaliu tempiamosios zonos armavimo koeficientu ir efektyviuoju sijos skerspjūvio aukščiu. Praktiniam taikymui sukurtos supaprastintos gelžbetoninių sijų projektavimo rekomendacijos, atitinkančios deformatyvumo reikalavimus.

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Research summary on long‐span connected tall building structure with viscous dampers

Cited by 13 publications

References 1 publication

Seismic Performance Analysis of a Connected Multitower Structure with FPS and Viscous Damper

Seismic Performance Analysis of a Connected Multitower Structure with FPS and Viscous Damper

A method for rapid estimation of dynamic coupling and spectral responses of connected adjacent structures

Limited Deformability Design of High-Strength Concrete Beams in Low to Moderate Seismicity Regions / Stipriojo Betono Sijų Ribinio Deformatyvumo Skaičiavimas Žemo Ir Vidutinio Seismingumo Regionuose

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