An inter-story drift-based parameter analysis of the optimal location of outriggers in tall buildings

Zhou, Ying; Cuiqiang, Zhang; Li, Xilin

doi:10.1002/tal.1236

Cited by 59 publications

(49 citation statements)

References 13 publications

(16 reference statements)

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“…In this system, the combination of core and perimeter frames connected by outriggers and belt trusses may enhance the lateral stiffness of the system, hence reduce its roof displacement significantly. As the fundamental concept of outrigger is to increase lateral stiffness, most researchers (Taranath; Stafford and Alex; Wu and Li; Hoenderkamp; Zhou et al) focused on the efficiency of outriggers in tall buildings in controlling drifts, by optimizing locations of outriggers.…”

Section: Introductionmentioning

confidence: 99%

Shaking table test on seismic resonant behavior of core‐outrigger structure

Sun

Huang

et al. 2017

Structural Design Tall Build

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Summary In order to investigate disastrous seismic resonant effect of resonant ground motions on tall building structures, a 1/40 scaled planar test model of a 56‐story core‐outrigger structure was tested on shaking table considering two types of ground motions, that is, non‐resonant and resonant ground motions. The non‐resonant ground motions were chosen from far‐field natural earthquake records, whereas the resonant ground motions were generated through scaling Fourier spectra of the non‐resonant ones in a target period region covering one of the first two natural periods of the test model. The test results showed that (a) with the same small peak ground acceleration of 0.07 g, the test model exhibited significant hysteretic behavior, residual displacement, and even overturning collapse under the resonant ground motions but behaved elastically under the non‐resonant ones; (b) the first‐period resonant ground motion caused extremely large displacements on the upper floors and large moments on the lower stories, whereas the second‐period resonant ground motion resulted in extremely large accelerations on the upper and middle floors; (c) the first‐period resonant ground motion was more probable to trigger overturning collapse of the core‐outrigger system after some exterior columns had reached their axial compression strength, even for those columns on the middle stories.

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Section: Introductionmentioning

confidence: 99%

Shaking table test on seismic resonant behavior of core‐outrigger structure

Sun

Huang

et al. 2017

Structural Design Tall Build

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“…In the preliminary design stage of high-rise buildings, the ratio of the core wall area to the whole floor area is a controlling factor, and it may be considered as an initial design variable, as in reference [37]. Usually, this variable is represented in the design problem by the distance from the edge of the core wall to the perimeter columns, where in practical engineering, this distance reflects the possible ratio of core wall area to the floor area [37].…”

Section: Other Related Variablesmentioning

confidence: 99%

Outrigger and Belt‐Truss System Design for High‐Rise Buildings: A Comprehensive Review Part II—Guideline for Optimum Topology and Size Design

Alhaddad

Halabi

et al. 2020

Advances in Civil Engineering

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This article is the second part of the series of the comprehensive review which is related to the outrigger and belt-truss system design for tall buildings. In this part, by presenting and analyzing as much relevant excellent resources as possible, a guideline for optimum topology and size design of the outrigger system is provided. This guideline will give an explanation and description for the used theories, assumptions, concepts, and methods in the reviewed articles for optimum topology and size design. Finally, this part ended up with a summary for the findings of the reviewed studies, which is useful to understand how different parameters influence the optimum topology and size design of a tall building with outrigger and belt-truss system.

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“…In the engineering practice, however, interstory drift is the most important parameter in the seismic design of tall building structures. Zhou et al investigated the theoretical method of interstory drift‐based optimal location of outriggers.…”

Section: Introductionmentioning

confidence: 99%

Optimal vertical configuration of combined energy dissipation outriggers

Xing

Zhou

Aguaguiña

2018

Structural Design Tall Build

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The damped outrigger system emerged as an improvement of the conventional outriggers with the aim to provide supplemental damping and to contribute to the vibration control in super tall buildings where this system is usually applied. In addition to viscous dampers (VDs), buckling-restrained braces (BRBs) have also been employed as energy dissipating members in outriggers. Nevertheless, the combined use of outriggers with VDs and BRBs in the same structure has not yet been studied. Such combination can contribute to achieve an effective multiperformance design of super tall buildings. This paper presents a study whose main objective was to determine the optimal vertical combination of two types of energy dissipation outriggers to control the seismic responses of a 9-zone super tall model structure. Outriggers with VDs (OVDs) and outriggers with BRBs (OBRBs) were placed at the different zones of the structure considering all the possible combinations and in configurations of up to four outriggers. The effects of these combinations on the seismic performance of the structure were studied through parametric analysis and optimization methods. This form of the outrigger system is defined in this paper as combined energy dissipation outrigger system. The results indicate that when two energy dissipation outriggers are used, the combination of OBRB plus OVD shows superior seismic performance compared with other double-outrigger configurations. In addition, the results show that the locations of OVDs and OBRBs play an important role in the structure behavior; it was found that it is more beneficial to place OBRBs above OVDs.

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An inter-story drift-based parameter analysis of the optimal location of outriggers in tall buildings

Cited by 59 publications

References 13 publications

Shaking table test on seismic resonant behavior of core‐outrigger structure

Shaking table test on seismic resonant behavior of core‐outrigger structure

Outrigger and Belt‐Truss System Design for High‐Rise Buildings: A Comprehensive Review Part II—Guideline for Optimum Topology and Size Design

Optimal vertical configuration of combined energy dissipation outriggers

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